Understanding the Definition of Symmetric Difference

Set theory uses a number of different operations to construct new sets from old ones. There are a variety of ways to select certain elements from given sets while excluding others. The result is typically a set that differs from the original ones. It is important to have well-defined ways to construct these new sets, and examples of these include the union, intersection, and difference of two sets. A set operation that is perhaps less well-known is called the symmetric difference. Symmetric Difference Definition To understand the definition of the symmetric difference, we must first understand the word or. Although small, the word or has two different uses in the English language. It can be exclusive or inclusive (and it was just used exclusively in this sentence). If we are told that we may choose from A or B, and the sense is exclusive, then we may only have one of the two options. If the sense is inclusive, then we may have A, we may have B, or we may have both A and B. Typically the context guides us when we run up against the word or and we don’t even need to think about which way it’s being used. If we are asked if we would like cream or sugar in our coffee, it’s clearly implied that we may have both of these. In mathematics, we want to eliminate ambiguity. So the word or in mathematics has an inclusive sense. The word or is thus employed in the inclusive sense in the definition of the union. The union of the sets A and B is the set of elements in either A or B (including those elements that are in both sets). But it becomes worthwhile to have a set operation that constructs the set containing elements in A or B, where or is used in the exclusive sense. This is what we call the symmetric difference. The symmetric difference of the sets A and B are those elements in A or B, but not in both A and B. While notation varies for the symmetric difference, we will write this as A ∆ B For an example of the symmetric difference, we will consider the sets A {1,2,3,4,5} and B {2,4,6}. The symmetric difference between these sets is {1,3,5,6}. In Terms of Other Set Operations Other set operations can be used to define the symmetric difference. From the above definition, it is clear that we may express the symmetric difference of A and B as the difference of the union of A and B and the intersection of A and B. In symbols we write: A ∆ B (A ∠ª B) – (A ∠© B). An equivalent expression, using some different set operations, helps to explain the name symmetric difference. Rather than use the above formulation, we may write the symmetric difference as follows: (A – B ) ∠ª (B – A). Here we see again that the symmetric difference is the set of elements in A but not B, or in B but not A. Thus we have excluded those elements in the intersection of A and B. It is possible to prove mathematically that these two formulas are equivalent and refer to the same set.​ The Name Symmetric Difference The name symmetric difference suggests a connection with the difference of two sets. This set difference is evident in both formulas above. In each of them, a difference of two sets was computed. What sets the symmetric difference apart from the difference is its symmetry. By construction, the roles of A and B can be changed. This is not true for the difference between two sets. To stress this point, with just a little work we will see the symmetry of the symmetric difference since we see A ∆ B (A – B ) ∠ª (B – A) (B – A) ∠ª (A – B ) B ∆ A.

Taking a Look at Life with Lex - 770 Words

Life With Lex is a newly set-up retail establishment that will offer fashionable clothing for sale to women aging from eighteen to fifty years old. Life With Lex is a sole proprietorship small business that will be located in uptown Kingston, New York. The uptown area of Kingston is becoming an extremely popular shopping area for locals because of its hip, vintage feel. While my inceptive goal is to open one boutique in uptown Kingston, my extension plans include inherently franchising my boutique Life With Lex, and/or the premises I am located in, a highly-acknowledged brand name. In the future, I would truly hope to occupy a substantial portion of the online retail market. The small business venture that I own and operate, a boutique named Life With Lex, is the perfect establishment for women to purchase products ranging from stylish clothing all the way to useful accessories. Flourishing businesses have a common characteristic in that they do something serviceable for their cu stomers. Therefore, if I precisely understand customer problems and needs, my business will have a better chance of triumph. My target market for my boutique Life With Lex is women aged from eighteen to fifty years old. Within this thirty-two age range, there are working class women and college students. Being in this particular age range, I personally know and fully understand that working class and college women like to buy fashionable, stylish clothing and other vaguely conservativeShow MoreRelatedDescriptive Essay - Original Writing2207 Words   |  9 Pagesextremely wacky right now, I need to chill with all the symbolism and figure out where I am. I look up from where I am sitting, well rather trapped, and start to scan the area I am in. 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Speaking In The Context Of New Zealand †Myassignmenthelp.Com

Question: How Do Tenants Demonstrate That They Have Ontological Security? Answer: Introducation Speaking in the context of New Zealand, Ontological security is influenced by several factors like society, relations, gender. It seems that people depend largely upon the real estate agents for the house purchasing decisions. Apart from this, the female folk of the families takes the major decisions keeping in mind several emotional factors which as per them will keep the family secure. There are also different factors that affect the tenants while purchasing houses and some of these factors have been led down by Levy Lawrence Murphy. One among them is emotional and contextual behavior. It is also a proven fact that people tend to be happier in their own houses than the owner-occupied houses (Herald on Sunday, 2012). However, the question that arises is how much happier the people actually are. It is largely evident from the Herald On Sunday article, how much pain and tension the tenants of the state housing blocks often suffer through. This happens when their houses are seized away by the Government. It has been heard from various inmates like Glenda Connon, Moepai Temata, who were totally devastated with this news that they will have to vacate their houses soon and will be shifted elsewhere. They have no idea about the new places that they will be shifted to; hence they are haunted by thoughts of an unsure future. (Miller, 2017) Using material from Murphy and Levy (2012) and Levy et al. (2008), critically examine the notion that housing markets are rational. House purchasing is one of the very crucial decisions that people take in their lives. It is also important because people have to invest their lifelong savings in this. Hence, the property estate agents say that house purchasing decision is one of the most rational decisions that people take in their lives. This decision is also self-regulating, in other words, it is something that depends wholly on the decisions of the purchasers (Levy, Murphy Lee 2008). As per the opinion of the real estate agents of New Zealand is concerned, they say that the adult female members usually make the final selection of the properties. It is also quite rational because they give much priority to the emotions and the family requirements. It is only after she has found a home that she considers to be right for all the family needs, she asks her husband to visit it. The husbands are usually busy working and do not get much time to visit the houses. However, in the contemporary families, the decision-mak ing process is dominated either by women or by both men and women. In the traditional families, one usually will see the opposite scene, as the male members dominate the entire decision-making process, keeping in mind the logical factors and ignoring the emotional factors. It has been said that the traditional families tend to make more rational house purchasing decisions (Levy, Murphy Lee 2008). It can also be said from this paper, that people are often driven by the opinions of their relatives or several other social constraints while buying a house. In other words, there are instances when buyers are influenced more by emotions, rather than the actual real facts and possibilities. However, the agents are of the opinion that these emotion-driven decisions are not necessarily irrational and can often turn out to be very meaningful. There has been a thorough session of interviews both with the families and the house agents regarding the rationality of the decision-making factors. B oth sets of interviews conclude that feelings and emotions do play a major role in the final decision-making process regarding the house purchasing. These decisions are often meaningful and rational. At the end, people take into consideration all the general factors. This makes the house purchasing decision very justified and rational. Critically discuss the difference between irrational exuberance and calculative affection in housing markets. Housing Market is very special and different than several other forms of markets. Irrational Exuberance is when the decisions in the housing market are affected more by the emotions of the investors. It often happens due to over excitement and often due to fear. The investors take decisions that may turn out to be very much unfavorable for them. It basically refers to the state when the price of the houses in the housing market is not functioning properly. It does not go in line with the national housing market expectations but is influenced by the emotions of the investors (Miller, 2017). Emotions and feelings play a major role here than the justified and working reasons. On the other hand, the calculative affections are something that works on the principle of taking into consideration those reasons that are more logical in nature. They are price, future expectations etc whereas the emotional factors that often affect the purchasers decisions are- close proximity to the laundry, hospital, sufficient place for accommodating all the family members. Reference list Fox O'Mahony, L. (2013). The meaning of home: from theory to practice.International Journal of Law in the Built Environment,5(2), 156-171. Herald on Sunday. (2012, March 4). The great betrayal of our poorer folk. New Zealand Herald. Retrieved from https://www.nzherald.co.nz/nz/news/article.cfm?c_id=1objectid=10789607. Levy, D., Murphy, L., Lee, C. K. (2008). Influences and emotions: exploring family decision-making processes when buying a house.Housing Studies,23(2), 271-289. Miller, C. (2017, April 15). Home truths: False hopes and downsized dreams. New Zealand Herald. Retrieved from https://www.nzherald.co.nz/residential-property/news/article.cfm?c_id=76objectid=11836224

The Trail of Tears, was it unjust and inhumane Wh Essay Example For Students

The Trail of Tears, was it unjust and inhumane? Wh Essay at happened to the Cherokee during that long and treacherous journey? They were brave and listened to the government, but they recieved unproductive land and lost their tribal land. The white settlers were already emigrating to the Union, or America. The East coast was burdened with new settlers and becoming vastly populated. President Andrew Jackson and the government had to find a way to move people to the West to make room. President Andrew Jackson passed the Indian Removal Policy in the year 1830. The Indian Removal Policy which called for the removal of Native Americans from the Tennessee, North Carolina, South Carolina, and Georgia area, also moved their capital Echota in Tennessee to the new capital call New Echota, Georgia and then eventually to the Indian Territory. The Indian Territory was declared in the Act of Congress in 1830 with the Indian Removal Policy. Elias Boudinot, Major Ridge, and John Ridge and there corps accepted the responsibility for the removal of one of the largest tribes in the Southeast that were the earliest to adapt to European ways. There was a war involving the Cherokee and the Chickasaw before the Indian Removal Policy was passed. The Cherokee were defeated by them which caused Chief Dragging Canoe to sign a treaty in 1777 to split up their tribe and have the portion of the tribe in Chattanooga, Tennessee called the Chickamauga. Chief Doublehead of the Chickamauga, a branch of the Cherokee, signed a treaty to give away their lands. We will write a custom essay on The Trail of Tears, was it unjust and inhumane? Wh specifically for you for only $16.38 $13.9/page Order now Tribal law says Death to any Cherokee who proposed to sell or exchange tribal land. Chief Doublehead was later executed by Major Ridge. Again there was another treaty signed in December 29, 1835 which is called The Treaty of New Echota. It was signed by a party of 500 Cherokee out of about 17,000. Between 1785 and 1902 twenty-five treaties were signed with white men to give up their tribal lands. The Cherokee would find themselves in a nightmare for the next year. In 1838 General Winfield Scott got tired of delaying this longer than the 2 years he waited already so he took charge in collecting the Cherokee. The Cherokee were taken from their homes and their belongings. The were placed in holding camps so none would escape. The Cherokee were to be moved in the fall of 1838. The journey did not occur in October, 1838 because of bad weather. They were now supposed to move 13,000 Cherokee in the spring of 1839 a distance of eight-hundred miles. The Cherokee were fed on meager rations and suffered malnutrition. They were badly clothed for the spring and many caught diseases and died. Many Cherokee tried to escape and some succeeded. The Cherokee knew these woodlands and knew where to go. The white men couldnt find them without the help of other Cherokee and bribes. Most of the Cherokee hid in the mountains and could not be found. During the eight-hundred mile trek many children and spouses were separated from their families when the Government would split up the Cherokee into groups of 1,000 for ease of removal. About one-third of the original Cherokee they collected died in the holding camps and between the trek from the Southeast section of the Union to Indian Territory. They would have to learn a new way of life and adjust. They lost their negro slaves, and their possessions. The Cherokee were farmers, and the land was infertile. The land was meant for cattle raising, which they didnt know ho to do. .ud49eada72b0e2d7edbec506c6fe6cc17 , .ud49eada72b0e2d7edbec506c6fe6cc17 .postImageUrl , .ud49eada72b0e2d7edbec506c6fe6cc17 .centered-text-area { min-height: 80px; position: relative; } .ud49eada72b0e2d7edbec506c6fe6cc17 , .ud49eada72b0e2d7edbec506c6fe6cc17:hover , .ud49eada72b0e2d7edbec506c6fe6cc17:visited , .ud49eada72b0e2d7edbec506c6fe6cc17:active { border:0!important; } .ud49eada72b0e2d7edbec506c6fe6cc17 .clearfix:after { content: ""; display: table; clear: both; } .ud49eada72b0e2d7edbec506c6fe6cc17 { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .ud49eada72b0e2d7edbec506c6fe6cc17:active , .ud49eada72b0e2d7edbec506c6fe6cc17:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .ud49eada72b0e2d7edbec506c6fe6cc17 .centered-text-area { width: 100%; position: relative ; } .ud49eada72b0e2d7edbec506c6fe6cc17 .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .ud49eada72b0e2d7edbec506c6fe6cc17 .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .ud49eada72b0e2d7edbec506c6fe6cc17 .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .ud49eada72b0e2d7edbec506c6fe6cc17:hover .ctaButton { background-color: #34495E!important; } .ud49eada72b0e2d7edbec506c6fe6cc17 .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .ud49eada72b0e2d7edbec506c6fe6cc17 .ud49eada72b0e2d7edbec506c6fe6cc17-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .ud49eada72b0e2d7edbec506c6fe6cc17:after { content: ""; display: block; clear: both; } READ: Atom Model Evolution Essay They built a capital city called Tahlequah, and their nation was declared in September 6, 1839. Their culture was bred here along their new way of life. John Ross who was elected by the Cherokee as the President of the Cherokee nation in 1827 continues his roll in the land, shared with another seventy tribes. They had opened up schools in the Indian Territory to continue their education for their children. The first Cherokee school opened in 1801 when the people were learning their language. Their written language which consists of 85 characters, was said to be created by a Sequoia (1760-1843) , a Cherokee .

The Digestive System Example

The Digestive System Example The Digestive System – Coursework Example number The digestive system Different types of foods come along with different nutrients such as vitamins, carbohydrates, fats, minerals, and proteins. These nutrients are often a source of energy and material to the body cells. The problem is that most of these nutrients cannot be used by the body for energy in the form in which they are eaten. Hence, before these nutrients are absorbed and carried to the body cells, they need to be broken out and changed into smaller, usable pieces. This is the work of the digestive system with the help of the digestive organs. The digestive process is a rigorous task carried out by the digestive organs working together in the digestive system (Hoffman, 53). Of concern is whether it is possible to live without one or more of the digestive organs. Each and every digestive organ has its own distinctive role. For this reason, it is impossible to live without one or more digestive organisms. However, the small intestine does the most work of any diges tive organ. This is the point where food is broken down by physical grinding as well as special proteins known as enzymes that work on food at the molecular level. In addition, the small intestine is where almost all of the useful nutrients are absorbed into the body. By this time, all that is left for the large intestines is waste in the form of undigested food. Other digestive organs such as the pancreas, liver, and gallbladder are not part of the twisted tube through which food travels but play important roles in the digestive system (Scott & Fong, 16). Regardless of how minor a role a digestive organ contributes to the digestive system, failure to have one of the digestive organizations can lead to digestive breakdown. Therefore, every digestive organ plays a detrimental role in digestion, and however minor it may appear, its pathology may lead to incomplete digestion.Works cited Hoffman, G. Digestive System. New York: Marshall Cavendish, 2008. Print. Scott, A. & Fong, E. Body S tructures and Functions. New York. Cengage Learning, 2013. Print.

The Culture, History and Religion of the Indus Valley Civilization Essays

The Culture, History and Religion of the Indus Valley Civilization Essays The Culture, History and Religion of the Indus Valley Civilization Paper The Culture, History and Religion of the Indus Valley Civilization Paper Essay Topic: The Long Valley The term civilization denotes the well developed and advanced state of a society possessing historical and cultural unity in which the people live together in communities. Referring to ancient civilizations means referring to the earlier settled and stable communities, upon which the subsequent development of states, nations and empires were based. Studying ancient civilization is the same as studying the early history of humans. Ancient history can be well understood and studied as far back as 3100 BC, because men began to write from that point of time. These ancient people made a proper record of events and this has made their study easy. However, human beings had existed before that period and civilizations that existed before the invention of writing can be studied by means of archeological excavations (Civilization). The first civilizations existed in Mesopotamia and Egypt in the Middle East, in the Indus Valley of Pakistan, in the Huang He valley of China, on the island of Crete in the Aegean Sea and in Central America. The common characteristic of these civilizations were that they had built cities, developed scripts for writing, learned about using metals and making pottery. They domesticated animals and used them for their transport purposes. During their period some of the world’s complex constructions were constructed (Stearns and Langer). The Indus valley civilization flourished in the valley of the Indus River, which is located in Pakistan. Archeologists discovered the Indus Valley civilization in the year 1924. These ancient farmers had grown vegetables, grains and domesticated animals on the river bank. This civilization dates back to 4000 BC. The emergence of the great cities of Harappa and Mohenjo-Daro and other small villages occurred in the year 2700 BC. Primitive Indians developed complex irrigation and drainage systems and discovered the art of writing. Their cities were fortified and they constructed pubic houses, palaces, baths and granaries for agricultural purposes. The ancient Hindu scripture, written around 1500 BC, the Rig Veda contains information that the Aryans had conquered the Indian civilization. Nomadic people of the Eurasian steppes were known as Aryans who introduced a caste system into the Indian civilization. During that time Brahmanism flourished (Shaffer, Indus Valley Civilization). Information about ancient peoples can be gathered from written records, carved inscriptions and archaeological excavations. Agriculture was a decisive factor in changing the life of mankind. Farming resulted in permanent settlements, which later on developed into cities. Agriculture was a major source of food and with the availability of sufficient food, there was an increase in the population. This increase in the population brought about the easy availability of people who could perform different tasks and develop the required knowledge to construct complex structures. This surfeit of food enabled the development of professions and trades in addition to agriculture (Guisepi). Agriculture requires a considerable amount of water and the main sources of water that were available to the ancient people were the rivers, streams and rainfall. Thus, the very first civilizations flourished along the river banks. Subsequently, people began to harvest rain water in the rainy season. The development of most of the ancient civilizations was in this fashion. The increase in the population brought about the development of communities into villages. Since, other trades were also prevalent; there was considerable development in the manufacture of goods and in the arts. Initially, these people stored food in animal skin gourds, which were later replaced with pottery. They learned to weave cloth from wool and flax and built houses with brick, stone and wood (Guisepi). Ancient people studied the movement of planets to determine the seasons. Further, the science of mathematics was developed as calculations were required to arrive at a correct decision. Later on they learned how to create calendars, which helped them to calculate the onset of the seasons and they divided the land among themselves for farming purposes and social reasons. Moreover, they learned to measure the land and the seeds and grains that they produced. Further, it was required to maintain a record of the measurement of various objects for future needs. Writing was invented as it became necessary to record events in the form of letters. Prior to the invention of writing, people had recorded their activities in the form of pictures and objects representing their intentions. Egyptian hieroglyphics is the best example of this ancient writing system based on pictures and most of the early writings were inscribed on stone tablets (Green and Black).

Social Performances of Shell Company Research Paper

Social Performances of Shell Company - Research Paper Example Royal Dutch/Shell Group of Companies is one of the largest global groups of energy and petrochemicals companies with around 101,000 employees in more than  90 countries and territories. Shell is expanding rapidly to other countries and they have almost monopolized the global energy market with their huge financial capabilities and resources. Most of the Shell companies are operating independently in each of the countries by the people who know the needs of the community and the environment well. They have the authority and autonomy to make all normal business decisions. One of the major success factors of Shell Company is their respect to the community in which they operate. Unlike many other corporate giants, Shell is keen in spending a portion of their profit for the wellbeing of the society or community in which they operate. Moreover, they are giving more emphasis to the environment protection. Social performance is accepted as the core of their business strategy for sustainable development.Most of the big companies declare their corporate social responsibility and these declarations often lie on paper alone. On the other hand, Shell is not like that. They don’t have much belief in public declarations and they don’t like the publicity for their actions. They are normally done things with least publicity compared to other big companies. Shell company has reportedly paid approximately $36 billion in taxes and royalties from 2005-2008 to the Nigerian government which can be used to promote development, reduce poverty and support econ omic growth4. It is a well-known fact that Nigeria is a poor country which is struggling to find enough resources to eradicate poverty.  Ã‚  

What's a Gaffer Do Assignment Example | Topics and Well Written Essays - 750 words

What's a Gaffer Do - Assignment Example Lighting, its effective designing and timely execution is crucial for the success of any shot, making the man responsible for the whole affair central to the art of filmmaking. According to Iggy, one of the leading gaffers in the filmmaking and who is also an avid blogger, the prerequisites for working as a gaffer is the acquisition of technical knowledge and a sound know-how of the equipment (Iggy, n.p.). For having an executive position, creativity and decision making skills are extremely crucial as well. Gaffer unions and guilds do exist; they offer internships as well as support for a gaffer while s/he is under employment. For example, the Motion Picture Studio Electrical Lighting Technicians Local 728 is one such organization listed on the IATSE website that works to support gaffers in the filmmaking industry (IATSE 728). An initiation fee is usually mandatory to gain membership in such unions. A gaffer’s importance to filmmaking cannot be emphasized enough since it is on e of the most pivotal roles in the entire process of cinematography. Effective management of the lighting on the set ensures a brilliant filming of a scene; hence, the correlation between a good gaffer and the success of the film is strong. Best Boy Electric is the assistant to the gaffer in the filmmaking industry.... To get started as a best boy, it is not necessary to have an academic degree since it is sound technical knowledge and effective organizational skills that determine a best boy’s success on the film set. As far as internships in the field are concerned, there are plenty of opportunities for a prospective best boy to learn the tricks of the trade, either under the mentorship of a professional gaffer or by enrolling in technical assistance programs offered. For instance, the Film New Orleans webpage offers a list of individuals who can assist upcoming technicians to train as best boys (Film New Orleans). The medium of filmmaking is extremely dependent upon the efforts of the best boy, especially in the productions phase, making the job central to the lights, camera and action. A Dolly grip is one of the posts that is related to the cinematographic field of filmmaking. Responsibilities of a dolly grip revolve around the technical supervision and operation of the camera dolly. A w ord known to filmmakers, the Media College defines a camera dolly as specialized equipment, a lot like a track, along which the camera moves (Camera Moves). The camera dolly not only allows the cameraman to take smooth shots but also facilitates the capturing of shots from multiple angles. Since a dolly grip is responsible for the operation of the camera dolly, the post is very closely related to that of a cameraman and thus falls under the camera department. In essence, it is a post linked with the production process of filmmaking. As is the case with most of the production department related posts, a dolly grip does not require prior academic achievements to be able to enter the field. Moreover, since the dolly grip is required to handle and

Safety of Larry Essay Example for Free

Safety of Larry Essay Morton resolves to leave the potentially violent playground because he reasons that the other man is very unreasonable and that engaging this man in any further dialogue would yield nothing beneficial. The father also seeks to ensure the safety of Larry his son far from the haughty taunts of the troublesome Joe. After the second reading. What does the narrator know about the wifes thoughts and feelings that is important to understanding the ending? The story’s narrator is aware that the wife senses a debilitating feeling of defeat and inadequacy whenever she faces a situation whereby unreasonable behavior triumphs over sensible behavior. These sentiments make the wife to be unsatisfied with Morton’s act of submissively leaving the troublesome father and child. The wife thus thinks that her husband is inefficient in agitating for his rights. She thus repeats the derisive ‘You and who else? ’ statement that the arrogant man utters in the park. What do you think this incident means to the wife? To the wife, injustice is depicted as trampling over justice according to the events that transpire at the park. Moreover, her husband demonstrates that he is weak and defenseless through is action of choosing to ignore the other man’s taunts. What other things do you notice? After analyzing the actions of the various characters, I have noted that Morton is a sensible and refined man who would not get involved in a physical confrontation just for the sake of it. Rather, he depicts a mature personality that allows him to have adequate patience to put up with the unreasonable mean’s behavior. What questions do you still have? I am not sure whether Morton really avoids being involved in a physical tussle with the other man just because of the silliness of such an action or because he fears being physically hurt by the obviously bigger man. Conversely, the wife’s actions are not clear as to whether she treasures violence or harbors violent tendencies.

Pediatric and Adult Migraines Essay -- Health Head Aches Essays

Pediatric and Adult Migraines Many people are surprised to find that children get migraines. It is one of those illnesses that are associated with adults only. A migraine is an intense, pounding headache with nausea that occurs infrequently. The headache starts around the eyes, the forehead, or the sides of the head. Bright lights and loud noises also make the headache worse, and any movements make this headache worse. Migraines last from a few hours to a few days in serious cases (1). Over 8 million children get migraines a year, which results in over 1 million lost schooldays cumulatively. 20% of adolescents in high school suffer from migraines as well. Pediatric migraines commonly stop when a child becomes an adult. Migraines occurring prior to puberty are about evenly split between boys and girls, and after puberty many more girls than boys experience them. Older children experience migraine pain typically on only one side of the head. Younger children, however, experience pain on both sides of the head. Some people also see a "warning aura," which is a pattern of lines or shadows in front of their eyes as the headache starts (2). Types of migraines are therefore classified as either common (no aura warning) or classic (with aura warning). Aura symptoms usually occur 30 to 60 minutes before the acute headache and generally are resolved by that time (3). Why are pediatric and adult migraines different? There are many different stimulants that trigger a migraine headache. Certain foods, like cheese, processed meats, chocolate, caffeine, MSG, nuts, or pickles are common triggers. Stress and too much exercise can also trigger an attack (1). Most children with migraines have a family history of ... ...ds.com/Health/Advice/migrainetreatme_zyg_gn.html 5) Aromaa, M. et al. "Pain Experience of Children With Headache and their Families: A Controlled Study." Pediatrics 106 (2000): 270-275 . 6) Hermann, C. and Blanchard, E.B. "Psychophysiological Reactivity in Pediatric Migraine Patients and Healthy Controls." Journal of Psychosomatic Research44:2 (1998): 229-240. 7)Sartory, G. et al. "A comparison of psychological and pharmacological treatment of pediatric migraine." Behaviour Research and Therapy 36 (1998): 1155-1170. 8) Pivate Pharmacological Information site, greeat online pharmacist answers to questions about metoprolol medication. http://www.rxlist.com/cgi/generic/metopro.htm 9) Gerber, Wolf-Dieter et al. "Slow cortical potentials in migraine families are associated with psychosocial factors." Journal of Psychosomatic Research 52 (2002): 215-222.

Talkshow on Rom Whittaker

Romulus Whitaker was only four years old when he caught his first snake in the country estate that he shared with his mother and sister in northern New York State. It was the beginning of a fascination with reptiles and a journey to conserve nature. Although born in the United States in 1943, Rom Whitaker grew up in India where he nurtured his passion for reptiles exploring the wild as a student in a boarding school up in the mountains in south India. Dr. Whitaker is one of India's leading herpetologists and conservationists. His efforts have helped to put numerous endangered wildlife on the conservation map.The world-renowned herpetologist and author is changing perceptions of reptiles through his innovative work while championing the cause for conservation of India’s rich biodiversity. (He’s 69) In an exclusive interview Romulus Whitaker shares some of his thoughts and interesting experience through the course of his work. 1. What is it about reptiles that got you fas cinated about them? My love affair with reptiles began before my ‘age of reason', in fact I was catching and keeping snakes at the tender age of 5 years at Hoosick, NY I found my first snake, a Dekay's snake and I was hooked.I Kept a terrarium full of local snakes and when I was seven I moved to India, the land of snakes. Over the years my interest broadened to all herps. 2. Were your parents or friends influential in your decision to go into herpetology as a profession? My mother in particular was very supportive of my ‘unusual' interest and bought me books by Pope, Ditmars etc. 3. Where is your favorite herping spot in the world? I guess my best place in Agumbe, Karnataka State, near the west coast of India, where we have one of our research stations. 4.What herp in the wild still gives you chills and sends your excitement levels through the roof? What herp is at the top of your list to find in the wild? I guess the king cobra tops the list but I get great pleasure in seeing any of the wonderful herps we have here in the wild. Well, having found a lot of species in a lot of places I guess it's just the mere idea of finding ‘new' species, which I've never seen in the wild, which excites me. 5. Aside from the conservation programs you’ve set-up, do you keep any herps as personal pets?Nope, no herp pets. We live on an 11 acre farm with Russells vipers, cobras, kraits, saw-scaled vipers, rat snakes, trinket snakes, vine snakes and so on, so there are rarely ‘dull' moments here. 6. What’s the best avenue people can help your conservation trusts and efforts? People can donate out right of course but perhaps more of them might be interested in coming over to India on a ‘paying volunteer' program which allows people to stay on site and do work to help keep the research and general work going, bringing their own special inputs. 7.Any advice for students looking to get into the herpetological field? Handling venomous snakes? I think the best way is to attach yourself to an existing herp program in any capacity just to get that experience and to work with people who are obviously doing it right and learning from them. 8. Do you think the increase of interest in the herp-keeping hobby has helped or hindered reptile & amphibian conservation? I can't say much about the herp keeping hobby, I know that it should be done responsibly and people should learn and know where their animals are coming from.If most of the herps on the market are from captive bred stocks fine, but taking them from the wild can be a fatal rip-off and that has hammered several species worldwide. 9. What are some of the most fascinating aspects of your job as a Reptile Expert? Every day is a fascinating experience, simply because so little is yet known about reptiles, as compared with more ‘obvious' creatures like birds and butterflies. Perhaps most interesting of all is the fact that once you have studied and been close to reptil es long enough, you realize that they too are complex beings with individual personalities, some nice and some not so nice.Venomous snakes have their tremendous killing power yet they are timid and shy and want nothing more than to stay clear of horribly dangerous human beings. I don’t have dull moments except for when I have to go into the awful city to do some chore like renew my driver's license! 10. In the course of your career, you must have had several close and dangerous encounters with crocs, komodo dragons and snakes. Is there any incident that stands out in your mind which left you completely speechless? It's kind of hard to say which experiences stand out as being exciting and memorable, in my kind of life excitement is never far away.Perhaps the incident that sticks in my mind is the first time I encountered a king cobra. It was in Agumbe (where we now have a research station) and I saw the black tail of a large snake disappearing into the bushes. Thinking it was a large, harmless rat snake I did what any snake hunter would do, I leaped on it. I managed to grab the tail and in my now prone position I looked up to see the hood of a large king cobra spread over me and a pair of not so friendly eyes glaring down at me. I needed no more encouragement and quickly released the king cobra's tail and rolled out of the way.Luckily the snake didn't want to tangle with me any more than I wanted to tangle with it and it slid away into the forest. Phew! 11. What are the challenges you have faced to dispel some of the misconceptions people have about reptiles? The main challenge is to get people to realize that their old folk tales and beliefs about snakes are usually wrong and that the reality of snakes and other reptiles is of course much more interesting than these old tales. People have a tendency to think that wild animals are ‘out to get them' when actually it's just the opposite. 2. Do you think there is adequate support / assistance for cons ervation of reptiles today or more can be done? How? Certainly reptiles are still not too high in the popularity charts and there is always a need for understanding the misunderstood creatures that we share the planet with. More media exposure to the facts about reptiles, their usefulness to us in controlling rodents and cleaning the waterways (in the case of crocs) and controlling harmful insects in the case of lizards, will certainly help their plight. 13.What do you hope people will take away from your work and films on reptiles? Is there anything you would like to do in the future? Well, I know people are not going to start hugging reptiles overnight, but I do feel we are making headway by writing, making films and bringing people to the Madras Crocodile Bank and teaching them about the wonders of the reptile world. What will I do in future? Probably just what I'm doing right now. One project is to promote research on snake venoms and the perfection of the anti-venom serum again st snakebite in India. All good fun!

Explain the Causes and Consequences of the Iraq War Essay

On the 20th of March 2003, US cruise missiles and bombs were dropped on Baghdad, Iraq’s capital city. The target was the then Iraqi president, Saddam Hussein’s and his closest aides, who were believed to be in a meeting. It would be the start of a conflict that would still be going strong seven years later. Even after so many years of US-led invasion, the reasons for invading Iraq are still debated worldwide. As Allawi (2007) argues ‘in the history of conflicts and wars, there are few instances that match the invasion and occupation for complexity of motive and ambiguity of purpose’[1]. As a result, the Iraq War or otherwise known as ‘Operation Iraqi freedom’ was to become one of the most controversial wars to date especially because of the overwhelming international hostility. It is one of the most important events that affected the world, radically changing 21st century international relations. This essay will be structured as follows the first section will explore the causes of the war. It argues that the main cause of the war was the perceived threat of Iraq’s possession of weapons of mass destruction. This study further argues an attempt to bring democracy to the country and getting rid of the country’s authoritarian leader was another cause of the Iraq war. The second section will explore the consequences such of the war from four different perspectives: the humanitarian consequences, the military consequences, the political consequences and finally the economic consequences. This will be followed by a conclusion. Hallenbery and Karlsson (2005) argue that the September 11th attacks on the twin towers in 2001 to some extent led to the Iraq invasion. The attack on the twin towers is one of the events that changed the world forever. Soon after the attacks, the then president, George Bush Jr, publically televised America’s War on Terror. The first of America’s target was Afghanistan, in particular the Taliban ‘who openly supported the Al-Qaeda’[2]and ‘allowed Afghani territory to be used for training camps and bases’[3]. However even after the invasion of Afghanistan, America was still concerned about possible threats. The US concluded that the September 11th attacks showed that ‘some countries could ally themselves with terrorist movements’[4] and most importantly provide them with weapons of mass destruction. Bush was especially concerned by Saddam Hussein’s Iraq. It was well known that during the 1980/90’s, Saddam had access to weapons of mass destruction. He had used them on his own people, killing thousands of innocent Kurds during the attack on Halabja[5]. Furthermore Saddam showed persistent hatred towards the west, especially America. The perceived threat of Saddam Hussein’s weapons of mass destruction was the main cause of the Iraq War. As already mentioned, soon after the September 11th attacks and the invasion of Afghanistan, Bush placed is attentions onto Iraq. Both the US government and the UK government argued that the invasion of Iraq was necessary for a number of reasons. Firstly, it was seen as part of the axis of evil, alongside Iran and North Korea, accused of seeking weapons of mass destruction and helping terrorism. Secondly, Saddam’s regime was linked to Al-Qaeda. It was feared that he might pass the weapons of mass destruction to Al-Qaeda who could potentially use them against western democracy’s. Thirdly, Iraq was accused of not only possessing WMD’s but was developing more deadly ones[6]. During 2002, speech after speech, Bush argued that world faced a common problem; Iraq. He pledged to work with the United Nations to deal with the issues posed by Iraq. By the end of 2002 the United Nations Security Council adopted resolution 1441; they gave their final opportunity to Saddam to comply with its disarmament obligations of face serious actions. However, by 2003, the US, UK and Spain introduced the ‘second resolution’ arguing that Iraq failed to take the final opportunity provided by the UN Security Council to disarm. The second resolution meant the authorisation of immediate force to disarm Saddam’s Iraq. [8] However, France’s president Jack Chiroc argued that they would veto the resolution. Crisis talks were held with the leaders of the US, UK and Spain resulting in the withdrawal of the resolution. The very same evening, President Bush televised a live conference warning that if Saddam Hussein did not leave Iraq in 48 hours the result would be ‘military conflict commenced at the time of our choosing’[9]. Therefore the main cause of the Iraq War was the threat of Saddam Hussein’s claimed WMDs. Prior to the invasion, American policy makers also emphasised ‘the broad benefits likely to result from the removal of Saddam Hussein’s authoritarian regime into a ‘cultivation of a democratic regime’[10]. They argued that democratization of Iraq would improve the well being of Iraqi citizens, politically and economically. Furthermore, and perhaps most importantly, the democratization of Iraq would help stimulate greater economic prosperity and promote further democracy in the rest of the middle east – a region historically characterised by authoritarian governments where there is a wide spread of conflict, instability and widespread poverty[11]. Moreover it was claimed that the democratization of Iraq would set the stage for the settlement of conflicts that had plagued the Middle Eastern region for decades which would mean the chance to create lasting peace. [12] This next section will examine the consequences of the Iraq war. Soon after the US entered Iraq, the Ba’ath party quickly crumbled. Many of the key members were killed soon after the invasion began. Saddam Hussein on the other hand, went on the run. This left the the country without a leader. Nine months after the war had begun, on the 14th of December, Saddam was finally captured. His capture would be the biggest, and some say only, accomplishment of the Iraq War. Shortly After his rise to power, Saddam’s ruthless tendencies came to light. For example he would often use violence to achieve his political goal, murdering any of his rivals. He invaded neighbours Iran in 1990 and Kuwait in 1991. He also created a secret police. The most disturbing of his actions could be seen in the events in small Kurdish town, in northern Iraq, called Halabja. As a result of Kurdish opposition, ‘Iraqi aircraft dropped canisters believed to contain a lethal cocktail of the nerve agents sarin, tabun, VX and mustard gas on the town’[13]. Over 5,000 civilians died, most to be believed women and children. Thousands of more were permanently affected[14]. Time and time again, Saddam showed no remorse about killing his own people. It is also believed he was also responsible for the deaths of his own daughter’s husbands. Altogether, although there is no official count of how many deaths Saddam caused, it is estimated to be around the region of 400, 00 to 50,000. Soon after his capture, Saddam was put on trial for crimes against humanity. He was found guilty killed and sentenced to death by hanging. He was hanged on the 30th December 2006. The removal of the brutal, ruthless, remorseless and genocidal leader is therefore seen a positive consequence of the Iraq War. Another consequence of the Iraq war is the failure to bring stability and democracy into the country. As already mentioned previously in this study, one of the causes of the war were to democratize the country which would in turn result into stability of not only the country but the whole region. The US led coalition were able to take Iraq within a matter of weeks as the Iraqi army proved weak. Instead the coalition forces faced a guerrilla style war. Insurgency intensified shortly after the war began. It seemed that almost, everyday there was a new story about some type of suicide bomber attack. However even after seven years, such attacks in Iraq are still are nearly an everyday occurrence. For example, the latest attack which happened on the August 17th 2010, 57 Iraqi recruits and soldiers were killed in Baghdad, while 123 were seriously wounded by a suicide bomber who blew himself up at an army recruitment centre[15]. The consequence of this latest attacks is that even after seven years, coalition forces have failed to stabilize the country. Interestingly, Wehrey et al (2010) argues that the removal of Saddam ‘upset a traditional balance of power in the region'[16], bringing further instability into the country. Traditionally, the balance of power in the region involved Iran and Arab nations. However with the Iraq war, the balance of power has now shifted towards Iran. Wehrey et al (2010) further argues that this shift in the balance of power has led to widespread concern amongst Arab states because of how easily Iran can ‘manoeuvre in the core of the Middle East, from Lebanon to Gaza'[17]. Therefore one of the consequences of the war and the removal of Saddam has ‘created the perception of increased vulnerability on the Arab side’. [18] The attempts to bring democracy have also failed. Iraq is no more democratised then before. This can be proven by the recent election results. Although elections were successfully held in 2005 to create a transitional national assembly whose main purpose was to create a constitution. As a result Prime Minister Nouri Maliki was able to formulate a government. However the recent election results have so far not been so successful, as six after Iraqi’s went to the polls, no winner has been declared due to delays and claims of vote rigging. The importance of the 2010 elections was great as the party who one would be the first to rule over a fully sovereign Iraq since the invasion of Iraq in 2003. [19] However the months of political instability has brought about fears of insurgency violence arising to levels seen between 2003-2006, where violence was at its highest. One of the major consequences of the war has been the huge loss of life. The BBC estimate that over 90,000 Iraqi civilians have been killed in since the beginning of the war. It estimated that nearly 5,000 casualties from the coalition forces[20]. However the number of causalities, both civilian and military, have been falling in the last few years. The loss of creditability of both the US and UK governments have been another consequence of the war. Mitchell argues that a number of policy errors were made by both governments. He argues that ‘opinions were not debated, intelligence was selectively used, the invasion lacked sufficient force, there was a failure to anticipate on insurgency and postwar planning was poorly devised. There has been widespread anger that the reasons for war were found true, therefore as some claim, making the war unjust and illegal. In the case of the British Government, the then prime minster, Tony Blair, popularity had fallen hugely as many believed he had led the country into war under false pretences. Wehrey et al (2010) make an interesting point. They argue that once consequence of the Iraq war is that is ‘has provided an anti-Western motivational focus and consolidated pre-existing grievances’[21]. The beginning stages of the war particularly from 2003 to 2006, presented a narrative of resistance to the US led invasion that proved powerfully ttractive to people across the region ‘whose immediate local grievances may have been unrelated to Iraq itself but who nonetheless may have been inspired toward violence by the war’[22]. Furthermore Al-Qaeda, successfully portrayed Iraq as the most striking example of an infidel invasion of an Arab Muslim land[23]. The economic consequences of the Iraq war have also been great. Reports have suggested that the cost of the war for the US is over three trillion dollars. Before the war, Iraq’s economy was weak due to decades of economic mismanagement by Saddam. Although Iraq was oil rich- it had huge debts due to Saddam’s wars in Iran and Kuwait. Furthermore economic sanctions from the UN during the 1990’s heavily affected Iraq’s economy. The country was never quite able to bounce back from the sanctions despite the large oil reserves. The impact of the war has worsened the situation. Unemployment it at an all time high and rebuilding infrastructure that was destroyed by the war, has been slow. The war has also brought about the problems of refugees. The United Nations commissioner for refugees argues that there are nearly one million refugees as a result of the war and roughly about 1. 5 million internally displaced person ‘a third of who are living in settlements or camp-like situations in extremely poor conditions’[24]. In conclusion, the main cause of the Iraq was the belief that Saddam Hussein was in possessions of weapons of mass destruction. Although it was no secret that Saddam had access to WMDs in the past, UN inspections would later find no evidence of them. Another cause for war was the belief that the overthrow of Saddams brutal regime would allow the democraztisation of the country which would improve Iraqi lives and lead to economic prosperity. Futhermore it would enable peace in a region which was riddled by conflict and instability. The toppling of saddam’s authoraitive rule and then eventual capture of the ruler was one of the rare success stories of the war. However this seems to be the only one. An attempt to bring democracy to the country has yet to be achieved; the casualities of the war have been high, people have lost confidence in governments and some have argued that the war has led to increased terror levels and consolidated an increased anti-western focus. Only time will tell the full extent of the wars further impacts. With America preparing to end its combat mission and end the number of American troops in Iraq, Iraq’s future looks dim. Even after six months of Iraqi’s going to the polls, a government has still not been formed. Fears are growing that Iraq still may not have the ability to provide security for itself or to be able to govern. Although Iraq may have got rid of their despot leader, the already weak country may have become even weaker as a result of the war.

eletion essays

eletion essays The two main candidates for the election of 2000 are George W. Bush and Al Gore. Al Gore, of course, being the current Vice President. I have never been into the whole politics game. But, know that I am 18 years old I feel I should start paying more attention to political issues. I don't know if I am going to vote this year, and if I did I don't know who I would vote for. I really don't know much about either canditate. All I know is that Gore is Vice President to Clinton, and we all know how most people feel about Clinton. In order for me to make a judgment on who I am going to vote for I would like to know where each canditate satnds on different political issues. Some of the issues I will be covering are abortion, crime, drugs, education, environment, and gun control. These are the issues I am most interested in, and I would like a president who agrees with me on a good portion of these issues. To start off, I am going to state where I stand on each of the isssues. I then will sat e where each presidential canditate stands on each issue. The first topic I would like to discuss is abortion. Abortion is kind of a big thing to me. I am one of those who is against abortion. I feel abortion is kind of like murder. I know it is easy for me to say that abortion is wrong, because I have never gotten a girl pregnant before. I understand that some tees make mistakes and want to correct those mistakes. But, I feel more people should stand up for their mistakes and take some action. Instead of having the baby aborted, the parents should put the child up for adoption. What if that kid was going to come up with a cure for cancer? I bet the parents would not want o abort the child then. Abortion is one area I agree with Bush. Bush wants to cut down the amount of abortions given out the whole year. Bush also wants to turn the choice of having abortions over to the state. Gore, on the other hand, wants to leave the choice in the w ...

The Whiteness of Nerds

The Whiteness of Nerds 1. The anthropological study of Mary Bucholtz (2001) was conducted in the Bay City High School in 1995-96, and the article under review represents her findings on the discourse of whiteness, blackness, and super-whiteness exercised through acceptance of particular socio-linguistic roles by students known as ‘nerds’.Advertising We will write a custom critical writing sample on The Whiteness of Nerds specifically for you for only $16.05 $11/page Learn More The author investigates the linguistic mechanisms such as the usage of appropriate, super-standard English grammar, pronunciation, and choice of lexicon (full refusal from the youth slang, and its usage only to imply the division) as the way nerds distance themselves from other white students, and black students. The key criterion they use to articulate their division is intelligence and its realization through language. The topic of racialization of the notion of ‘whiteness’ not on ly visvis blackness, but inside it, involving the gradation of whiteness, is explored (Bucholtz 2001: 86). 2. The issue highlighted in the present article is the way racial markedness of certain groups of youth in the modern American society is achieved through the usage of certain linguistic forms, and the way this phenomenon is introduced in the notion of ‘whiteness’ that used to be considered a solid category juxtaposed to ‘blackness’. 3. The importance of the author’s argument is in the segmentation of the white society according to linguistic norms similarly to a wider division between larger groups of population, i.e. African American and European American students. The way language ideologies perform cultural work of division within a single socio-cultural group has not yet been explored in full; therefore, the cultural segmentation presented through linguistic means, and the potential for creating a particular profile of the group by means of using linguistic markers has much potential for future research. 4. The author ties her findings and conclusions to the research on language ideology and explores the subculture of nerds through such linguistic processes as iconization, fractal recursivity, and erasure (Bucholtz 2001: 88). She explains the detachment strategies of nerds on the basis of these ideological tools.Advertising Looking for critical writing on anthropology? Let's see if we can help you! Get your first paper with 15% OFF Learn More 5. There are several implications of Bucholtz’s line of argument relating to the volume of original material processed in the course of the discussed research. As for the meaning of intelligence as the main marker for ‘blackness’ and ‘whiteness’, as well as the measure of whiteness that can also differ widely across the group of all white people, there is comprehensive evidence of its essential meaning for all discursive ma rkedness cases discussed. Thus, for example, the notion of ‘hillbillies’ (as the degraded form of whiteness) can be assessed according to the intelligence criterion (Bucholtz 2001: 84). The example of African American students concealing their intellectual potential at school not to be accused of â€Å"acting white† and not to be called a â€Å"brainiac† also certifies the strong impact of not only inter-racial markedness, but the measures of intra-racial markedness that at times are even stronger than the inter-racial forms. Secondly, the process of creating a language ideology is welded in the sound body of evidence, which is genuinely persuasive. The study of Irvine and Gal 2000 is outlined and then utilized on a set of examples from the students’ interviews (Bucholtz 2001: 88). The way the author selects the fragment of interviews and explains the usage of certain terminology by the ideological view of certain elements of a subculture as ingrain ed and typifying is logical and efficient in the whole research. 6. The author has used the observational method, and applied the structured and unstructured interviews with the students of Bay City High School. 7. The ability to create socio-cultural markedness of one’s language, nerds in particular, may be considered the main strength of Bucholtz’s article. The exploration of the tools and strategies applied by nerds to underline their intelligence, and the role of intelligence in the estimate of ‘whiteness’, are also the strong sides of the research. However, the study lacks the generalization potential – observation in one school and for only one year is not enough to articulate the socio-linguistic characteristics of a specific demographic group in action. More comprehensive and longitudinal studies are required to make the study’s hypotheses stronger. 8. The present article represents much food for thought in shaping the knowledge about various aspects of communication on the broader scale. It is possible to assess more practical aspects of the unifying and separating power that one language may have within one culture.Advertising We will write a custom critical writing sample on The Whiteness of Nerds specifically for you for only $16.05 $11/page Learn More As Miller, Esterik, and Esterik note (2010: 327), any language has strong ties to the culture in which it is spoken; it shaped the culture in the historical discourse of its formation, and makes it distinct from any other culture with another unique language. However, nowadays some subdivisions of a language may shape the unique appearance of certain subcultures, and give both positive and negative attributes to them. The notion of the relationships between language and class is also reinforced with the help of Bucholtz (2001). The issue of nerds striving to take a higher rank due to the usage of super-standard English, and the attrib ute of ‘hillbillies’ as degraders in the scale of the social class, show how the usage of certain linguistic norms shapes a certain image of language users, both unintentionally and by their deliberate effort. Hence, the language has become a strong instrument in shaping one’s identity, and it may be manipulated accordingly by a certain subculture or group.

Army Leadership - the Role of the Non-Commissioned Officer Essay

Army Leadership - the Role of the Non-Commissioned Officer - Essay Example These roles are to be performed by individual NCO corps as well as the NCO leaders. NCO vision The NCO vision requires that an NCO corps should be grounded in tradition, heritage and values that embody the perpetual learning of values and Warrior Ethos. In terms of roles, the vision requires that NCOs should be capable of training, leading and motivating soldiers. In terms of leadership, their chief role within the military organization is being a direct leader to the military officers. After the training of new recruits, NCOs are assigned to be the key direct leader and a trainer for crew, team and individual at the unit level (Chiefs of Staff, US Army, 1997). According to Fitton (1990), the NCOs are required to lead by example. This means they are expected to understand and practice the ethical requirements of soldiers and perform their duties diligently so as to give a practical lead to the other soldiers. Their role modeling is important for the military personnel because they ar e the most visible leaders within the military organization. The NCOs are required to provide inspiration, motivation and purpose for the other military officers because soldiers look to their NCOs for inspiration, solutions and directions/guidance. Due to their training, long-term service or experience in the military, an NCO officer should be capable of training other officers based on experience. They are supposed to help the soldiers to answer or overcome the challenges experienced in the contemporary operating environment by training them to prepare, cope and perform well no matter the prevailing situation. This means that they should be able to give high quality training to the soldiers. This training they give to the soldiers is also suppose to prepare them for their mission ahead and so they always stress on physical hardening and the basics of field craft. They do this because the need for physically and mentally fit soldiers will not be reduced by the tools provided by tec hnology (Bainbridge, 1976). The NCOs are senior to the soldiers they live, train and work with on daily basis and it is therefore their role to take care of the other soldiers. They are required to balance the mission for the military organization and the welfare of the soldiers. Each NCO should develop and demonstrate as a genuine concern about the well-being of the soldiers they are training or leading. Taking care of the soldiers also entails preparing them adequately to face any challenge that lies ahead of them. In order to achieve this, the NCOs ensure that they give the soldiers enough physical training and military practice for example clearing terrorists from urban strongholds or caves, or carrying heavy loads (Bainbridge, 1976). According to FM 7-22.7 (2002), it is the responsibility of the NCOs to set, maintain and enforce high-quality standards and discipline within the military organization because they are the standard bearers. They should ensure that all soldiers comp ly with the expected rules, discipline levels and military operation standard for example, military appearance. They are supposed to correct all military officers who do not wear their uniform properly while teaching them the right standards of military appearance. In connection to this, they are required to inspect for proper and serviceable equipment and clothing for their soldiers. The role to enforce military standard and discipline should be done

The Acceptance of the Conspiracy Theories Assignment

The Acceptance of the Conspiracy Theories - Assignment Example The authors open their article by claiming that conspiracy theories are not only common in America, but also Americans highly believe them. The authors then proceed to explain the meaning of conspiracy theory. They define conspiratorial belief as strong conspiratorial belief of an individual in conspiratorial terms. Further, the authors explain two major predispositions, which drive the acceptance and belief of conspiracy theories. These include: Partisan and conspiratorial predispositions. In their finding, the authors conclude that conspiracy information significantly influences the thinking of the information receivers and that predispositions exist as concerns conspiratorial thinking.In the article â€Å"Dead and Alive: Beliefs in Contradictory Conspiracy Theories,† Wood et al. explore the beliefs that surround conspiracy theory. The authors begin by defining conspiracy theory, which they define as the secret collusion of influential people or organization to achieve some objective (1). The authors conduct two different studies to prove that conspiracy theory can result into a monological belief structure. According to the authors, conspiracy theories exhibit correlation with each other. They assert that even mutually incompatible theories of conspiracy exhibit positive correlation. As such, belief in one conspiracy theory relates to the beliefs in other theories. Further, the authors hold that coherence with undoubted worldviews leaves no or little for contradiction in personal beliefs.

Master of Human Science (Political Science) Specialised in Essay

Master of Human Science (Political Science) Specialised in International Relations, - Essay Example nd conflict, which has been related to Muslim terrorists that are spreading violence in a number of provinces of Thailand, such as Malay Pattani region, etc. Although the region has confronted a number of violent activities for decades; however, the year 2004 witnessed the highest point in such violence. In the year 2005, emergency powers were used by the Prime Minister of Thailand to control the insurgency in the country. Subsequently, the combat became operational in the year 2006, as extraordinary powers were given to the army by the Prime Minister. Until now, the real identity of terrorists behind such violence is still a mystery, and this study will try to analyze different aspects of this conflict. There has been great governmental conflict going on between the Muslims and the government in southern Thailand due to the false belief that Muslims are involved in terrorism, which has thought Muslims at risk related security issues of the country, and thought to be the center of organized crime, as well as, the drug industry. The roots of conflict between the Malay-Muslim population is due to the perceived discrimination that can be traced back to times when the modern Thai state was being established by the â€Å"Chakkri† dynasty. This is known to have taken place in the early part of the18th century; it was also done in an attempt to take over the control of â€Å"Patani†. There after the conflict has been there due to the following main ingredients, which have been woven together: Methodology refers to the overall approach to the research process, from the theoretical underpinning to the collection and analysis of the data. Research methodology refers to a set of tools and techniques used in carrying out the research. There are different types of research, such as, descriptive vs. analytical, applied vs. fundamental, quantitative vs. qualitative and conceptual vs. empirical. Qualitative research involves analysis of data such as words (from scriptures),

History 20th Century Essay Example for Free

History 20th Century Essay The historical past of a particular country is essential in understanding its present situation as well as in planning the future. Past events served as a basis as to why particular situations happen in the present. In relation to this, lesson learned in the past also becomes a guide in order to avoid previous mistakes. Being the case, analyzing a countrys history is indeed important. These ideas also holds true in the case of the 20th century African American leadership. The era of slavery in the United States of America holds a very important part in their history. It was during the time wherein the southern region of the country capitalizes in the exportation of cotton that this slavery of African American took place. As such, maltreatment of these people happened that is characterized by the discrimination and segregation of the African Americans from the whites. This is also the reason why many African American leaders started to go against this inhumane treatment and asked for changes. Their efforts might have taken a long time before it made a difference but it was worth it. It is also essential that primary resources are use in studying and analyzing the history of African American leadership because it should be taken into consideration that majority of the people who are in power during those times as well as at the present are whites. As such, some of them are capable of manipulating the information about the African American history. Studying the leadership of these African Americans is important because they epitomize how people struggle in order to fight for their rights. They also embody a turning point in the United States history because it was due to their leadership that the country reassesses their idea of freedom and democracy. Furthermore, it plays an important role for the country to understand the present state of African Americans as well as the development and areas for improvement of the situation of these people. Moreover, the lesson learned from this experience would aid the people to make things better so that the mistakes done in the past would not happen again.

The Physics of Roller Coasters Essay -- Physics Science Research

The Physics of Roller Coasters The roller coaster has its beginnings in Russia where during the 1600's. People crafted sleds out of wood and built hills made of ice blocks. The hills had sand at the bottom to help slow down the sleds so they would not crash when they reached the bottom of the hill.1 Over time, the roller coaster has become more complex. They now are taller, faster and are designed out of different materials like wood and steel. Although roller coasters are fun and exciting, the questions, what allows them to twist and turn, go up and down hills at a fairly good speed? Why do they not fall off of the track when it goes through a loop? The answer to these questions and others about roller coasters lies in the application of basic physics principals. These principals include potential and kinetic energy, gravity, velocity, projectile motion, centripetal acceleration, friction, and inertia. The basic design of a roller coaster consists of a train like coaster that starts out at the bottom of the tallest hill of the ride. The train is then pulled up the hill and is pulled to the top of the hill. As the train is pulled from the bottom of the hill to the top of it, the trains' potential energy is converted onto kinetic energy. Potential energy is defined as "the energy of an object at a height h above some zero level as equal to the work done by the force of gravity"2 (139). Kinetic energy is the energy of "an object . . . because of its motion"2 (132). As the distance between the ground and the train of cars increases, the potential energy of the train increases as well. This increase in potential energy increases the amount of kinetic energy that can be released in the system therefore causes the system to be ... ... depleted causing the train to come to a stop. So, as you can see, roller coasters are an excellent example of the use of forces energy in a system and how they interact with one another to cause motion and to stop motion of objects. If these forces were not present, then we would have a very difficult time doing anything because there would be no way to start motion and if there was motion it would be very difficult to stop it. Works Cited 1. Annenberg/CPB. â€Å"Roller Coaster History† Amusement Park Physics: What are the forces behind the fun?. Learner.org http://www.learner.org/exhibits/parkphysics/coaster2.html. . April 29, 2003. 2. Kirkpatrick, Larry D. and Gerald F. Wheeler. Physics: A World View. ed. 4. Harcourt College Publishers. Fort Worth. 2001. 3. Britannica Online. â€Å"Roller Coaster Physics. http://search.eb.com/coasters/physics/. May 1, 2003. The Physics of Roller Coasters Essay -- Physics Science Research The Physics of Roller Coasters The roller coaster has its beginnings in Russia where during the 1600's. People crafted sleds out of wood and built hills made of ice blocks. The hills had sand at the bottom to help slow down the sleds so they would not crash when they reached the bottom of the hill.1 Over time, the roller coaster has become more complex. They now are taller, faster and are designed out of different materials like wood and steel. Although roller coasters are fun and exciting, the questions, what allows them to twist and turn, go up and down hills at a fairly good speed? Why do they not fall off of the track when it goes through a loop? The answer to these questions and others about roller coasters lies in the application of basic physics principals. These principals include potential and kinetic energy, gravity, velocity, projectile motion, centripetal acceleration, friction, and inertia. The basic design of a roller coaster consists of a train like coaster that starts out at the bottom of the tallest hill of the ride. The train is then pulled up the hill and is pulled to the top of the hill. As the train is pulled from the bottom of the hill to the top of it, the trains' potential energy is converted onto kinetic energy. Potential energy is defined as "the energy of an object at a height h above some zero level as equal to the work done by the force of gravity"2 (139). Kinetic energy is the energy of "an object . . . because of its motion"2 (132). As the distance between the ground and the train of cars increases, the potential energy of the train increases as well. This increase in potential energy increases the amount of kinetic energy that can be released in the system therefore causes the system to be ... ... depleted causing the train to come to a stop. So, as you can see, roller coasters are an excellent example of the use of forces energy in a system and how they interact with one another to cause motion and to stop motion of objects. If these forces were not present, then we would have a very difficult time doing anything because there would be no way to start motion and if there was motion it would be very difficult to stop it. Works Cited 1. Annenberg/CPB. â€Å"Roller Coaster History† Amusement Park Physics: What are the forces behind the fun?. Learner.org http://www.learner.org/exhibits/parkphysics/coaster2.html. . April 29, 2003. 2. Kirkpatrick, Larry D. and Gerald F. Wheeler. Physics: A World View. ed. 4. Harcourt College Publishers. Fort Worth. 2001. 3. Britannica Online. â€Å"Roller Coaster Physics. http://search.eb.com/coasters/physics/. May 1, 2003.

Wine Analysis of Fining Agents Chemistry

CHEMISTRY-WINE MAKING| Investigating the effectiveness of common fining agents on homemade fruit wine with respect to Turbidity, Sediment level, Ph and Alcohol content. | | Year 12 Chemistry| Extended Experimental InvestigationA comparison of chemical flocculation agents| Mario Mitov| Mrs Cullen 2011| | Contents: 1. 0- Abstract 2. 0- Introduction/Background 3. 0- Aim 4. 0- Hypothesis 5. 0- Safety analysis 6. 0- Equipment and Materials 7. 0- Procedures/Methods . 1- Initial wine making procedure 8. 2- Addition of clearing agents including ratio conversion 8. 3- PH testing 8. 4- Vinometer testing 8. 5- Hydrometer testing 8. 6- Turbidity testing (tube) 8. 7- Sediment level measurement 8. 8- Electric conductivity (EC) testing 8. 9- EC conversion to TDS 8. 10- Alcohol titration method 8. 11- Alcohol titration calculations (refer to journal) 8. 0- Results/ Data Analysis 9. 12- Graph1. PH over time 9. 13- Graph2. Alcohol %v/v over time 9. 14- Graph3. Sediment level over time 9. 15- Graph4. D ifference in sediment level over time 9. 6- Graph5. Turbidity over time 9. 17- Graph6. Electrical conductivity over time 9. 0- Discussion 10. 0- Conclusion 11. 0- Appendices 12. 0- References 13. 0- Special Acknowledgments 1. 0-Abstract: The construction of this EEI was conducted in accordance to the term 2 context (Wine: an artful process). This report is intended to present the experimental and analytical aspects of wine chemistry with focus on fining agents. By testing these fining agents on wine samples, their overall effectiveness will be observed and discussed with respect to pH, Turbidity, Sediment level etc.This will help draw a valid conclusion as to the fining agent that has the greatest clarification effects on the tested wines and to what extent. 2. 0- Introduction: The ancient process of winemaking has captivated the human civilisation for thousands of years. Archaeological findings have shown that the earliest production of wine can be traced back to 8000BC in the regi on of modern day Georgia, Iran and Armenia (Merveonur, M. 2011). Since then the art of vinification has been continually evident throughout history with its significance highlighted in many of the world’s greatest cultures.Take for example the ancient Egyptians of third millennia BC that used wine for sacred ceremonies or the ancient Greeks that traditionally conducted symposiums (social parties) by drinking wine in large groups (Biers, W. 1980). Throughout the ages wine has undoubtabley been valued for its significance in society, culture and even religion, with its importance still prevalent in the modern world. In Australia, the exportation of wine currently contributes an astounding $6 billion dollars to the nation’s economy (Adams, P. 2005).In fact, Australia is recognised as the fourth largest exporter of wine in the world. The country’s eight constitutive states all commercially produce wine of high quality with vineyards occupying approximately 160,000 h ectares throughout Australia (Wine Australia, 2010). States such as Victoria and South Australia are internationally renowned for producing highly exquisite wines that undergo the finest vinification. The process of producing wine is one that involves multitudinous techniques and requires a thorough scientific understanding referred to as Oenology.Oenology is the modern study of winemaking encompassing everything from the initial fruit growth to the extensive chemistry behind the entire process (Boulton, R. 1996). Vinification ultimately consists of many biochemical processes that must be carefully monitored and controlled to ensure success. The primary chemical process involved in any wine is the initial fermentation which is responsible for the formation of ethanol. During this stage, common fruit carbohydrates such as glucose and fructose are converted to alcohol through anaerobic yeast respiration (Fugelsang, C. 1997).Ultimately, the yeast which are facultative fungal organisms provide enzymes that break down sugar molecules while releasing Ethanol and Carbon Dioxide as by-products through the exothermic reaction: C6H1206 —>2CH3CH2OH + 2CO2 + 115kj/mol. Winemakers will usually stop the fermentation process once a desired alcohol level is achieved however the fermentation can naturally stop after reaching a certain level of alcohol that subsequently becomes toxic to the yeast thus killing them (Smith, D. 2009). Once fermentation is over, many wines may display signs of turbidity or cloudiness.This is due to suspended particulates such as proteins, tannins, phenols or dead yeast cells that cause haziness in wine when not removed. These particles can precipitate out of the wine naturally under the influence of gravity however this is a lengthy process and those that want fast results rely on chemical clarification. Chemicals for the purpose of wine clarification are known as fining or flocculation agents and are widely used in the wine industry. These agents are commonly derived from Earths, Proteins, Carbons, Synthetic polymers, Polysaccharides and other substances (Zoecklein, B. 988). It is extremely important that a commercial wine be cleared of any suspended impurities so that it appeals to the consumer. Fining agents generally clarify the wine in three different methods including electrostatic attraction, absorption or enzymatic break down (Main, M. 1995). The most common method however is through electrostatic attraction as this is displayed by the majority of fining agents. Theoretically the suspended particles in wine all carry a corresponding electrical charge therefore by dding a fining agent of the opposite charge the particles adsorb to the surface of the fining molecule forming heavy clumps (refer to appendix figure 1). The clumps rapidly sink to the bottom due to their high density relative to that of the wine (Guerra, B. 2008). Ultimately, three fining agents were selected as test subjects for the experiment that w as to be conducted. These agents include: Bentonite which is aluminium phyllosilicate clay with a negative charge, Isinglass; a collagen derived from fish that carries a positive charge and Kieselsol/gelatine which is a fining agent utilizing both a positive and negative charge. 3. 0- Aim:The general aim of this scientific investigation is to assess the efficiency and clarification capabilities of three difference fining agents including; Bentonite, Isinglass and Kieselsol/Gelatine. The results obtained from the wines treated with fining agents will be contrasted to those obtained from the wine without the presence of a fining agent. This will indicate any trends in the data as to which fining agent is most efficient and if there is a great difference between the rate of clarification of the wines subject to chemical fining as opposed to the wine subject to natural clarification under the influence of gravity alone.By testing parameters such as Ph, Turbidity, Sediment level, Alcohol content and Electrical conductivity some relationships between the results obtained and variables will be analysed to justify the efficiency of the flocculation agents. 4. 0- Hypothesis: It can be hypothesised that all three fining agents will have noticeably different effects on the wine clarity. The ‘Kwik Clear’ agent is predicted to exhibit the greatest impact on clarification as it comprises of both Kieselsol and Gelatine which are agents of opposite charges.This will hypothetically create more lees as the negative and positive charges together will in turn attract more suspended particulates of either electrostatic charge. On the other hand, the negatively charged Bentonite agent is also expected to demonstrate immense fining capacity due to its great molecular surface area that will prompt the adsorption of high amounts of positively charged particles. The Isinglass agent is ultimately expected to perform less desirably as it is by nature a delicate, positively c harged agent with weak fining abilities due to it fragile molecular structure.Finally, the wine without the presence of fining agents (the control), will undoubtabley show the least satisfactory results in terms of clarification. Some sedimentation may occur due to the natural impact of gravity however this will be limited and substantially less in comparison to the wine treated with fining agents. 5. 0- Safety Analysis Due to the topic of this assessment (wine making), the laboratory has been used extensively for nearly all aspects of this assignment including the creation of wine and testing. Safety precautions must therefore be exercised together with strict lab etiquette to prevent dangers arising.Students must remember at all times to abide by the rules which include: 1. Conducting one’s self sensibly and responsibly at all time especially when handling chemicals of potent nature. 2. No food or drinks to be brought into the laboratory to prevent the possibility of contam ination with harmful substances. 3. Long hair must be firmly tied back to reduce the risk of exposure to corrosive chemicals (or the risk of contaminating the wine). 4. Safety goggles, aprons, lab coats and gloves should be worn at all times to minimise the risk of body exposure to chemicals especially the eyes. . All experimental instructions must be read and understood precisely before conducting the experiment. 6. Sitting on top of the laboratory benches is prohibited. 7. Sitting on chairs while performing chemical experiments is forbidden. 8. The labels of chemicals utilized must always be read so that one is aware of the risks and nature of the particular chemical. 9. Extreme caution must be taken when handling glass apparatus to ensure no breakage. 10. Any breakage or chemical spills must be immediately reported to the teacher so that the risk may be quickly contained. 11.Carrying chemicals or glass across the room is not advisable and carries a great degree of risk. 12. Runni ng whilst in the premises is strictly forbidden 13. All students must wear closed in shoes to protect feet from spills that may run down the benches. 14. All individuals must be aware of the nearest fire exits and have an understanding of how to use the fire blanket in case of emergency. 15. Any skin contact with chemicals must be quickly reported to the teacher and subsequently washed under running water for 20 minutes or the eye bath when contact has occurred with the eyes. 16.Any instructions given by the teacher must be followed without hesitation. Note: During the course of the wine making, student are required to perform titrations which require the handling of some extremely noxious chemicals including carcinogens, potent acids and allergens that must by all means be handled with immense care. Many chemicals also have the tendency to cause problems with the respiratory system when inhaled thus any chemical must be distanced from the nose or mouth. 6. 0- Equipment and Material s. Initial wine making: Supplied by school 1. 5L Demijohn with stopper (fermenter) 2.Air-Lock 3. Plastic bucket 4. Wine making yeast 5. Tartaric acid 0. 5tsp 6. Nutrient (Diammonium Sulfate, Ammonium Sulfate or Ammonia Phosphate) 7. Sodium Metabisulphite wash solution (0. 5tsp in 0. 5L of water) 8. Campden tablets 9. Pectinase 10. Funnel 11. Sleeve 12. Plastic champagne cork 13. Plastic tubing 14. Balloon 15. Cottonwool 16. Hydrometer 17. Vinometer 18. 100mg Vitamin C tablets as preservatives Initial wine making: Supplied by student 1. Tea towel 2. 6-8 very ripe bananas 3. 150g Sultanas 4. 8kg very ripe fruit (oranges for this group) 5. 3 tea bags 6. 7x 750mL Wine bottlesAdding/preparing the fining agents: 1. Bentonite (Brewcraft) (solid form) 2. Isinglass (Brewcraft) (liquid form) 3. Kieselsol/Gelatine (Kwik Clear) (liquid form) 4. 2x small beakers 5. 1x 0. 1mL increment glass pipette and 1x medium 1mL increment glass pipette. 6. Electronic scales 7. Plastic milkshake cup (to blend Bentonite) 8. Electric blender 9. Distilled water Testing the wine for all parameters: 1. PH meter 2. Hydrometer 3. Vinometer 4. Turbidity tube 5. EC meter 6. Ruler or tape measure (for sediment measurement) 7. Wine samples 8. 4x beakers 250mL 9. 1x large measuring cylinder 10.Distilled water 11. Disinfectant solution (Sodium percarbonate) 12. Funnel 13. Gloves Performing the titration for alcohol concentration: 1. 10mL wine sample 2. 60mL of Potassium Dichromate 3. 100mL Standard sodium thiosulphate solution (0. 1M) 4. 30mL of 40% sulphuric acid 5. 6 g Potassium Iodide 6. 250mL distilled water 7. starch indicator (starch solution, freshly made) 8. 10mL pipette 9. 2 ? 20mL pipettes 10. pipette filter 11. 250mL volumetric ? ask 12. 3 ? 250mL conical ? asks with stoppers 13. 10mL measuring cylinder 14. small funnel 15. burette and stand 16. white tile 17. hot water bath 8. thermometer 19. spatula 20. electronic balance 21. safety glasses 7. 0- Procedures/Methods 7. 1- Initial wine ma king procedure: 1. Pour sachets of yeast into a 750mL bottle with the addition of 2 tbsp sugar, 0. 5 tbsp acid and half-fill the bottle with water placing a balloon over the neck when finished. 2. Fill the bottle with water when the balloon has popped up. Replace the balloon afterwards. 3. Once the balloon ‘pops up’ a second time, put the bottle in the fridge. 4. Wash bucket, knife, working surface and all fruit with sodium metabisulphite solution. Avoid rinsing fruit! 5.Remove any really bad parts off the fruit. (it’s not a problem if the fruits are mildly squashed or discoloured). 6. Chop the fruit into approximately six pieces each and place into bucket. 7. Add/mix the following into the fruit: 0. 75 tbsp acid, 0. 75 tbsp nutrients, 0. 75 tbsp Pectinase or 7. 5 drops Pectinol, 7. 5mL Sodium metabisulphite, 150g sultanas, 6-8 bananas, 3 tea bags and 7. 5L water. 8. Leave to rest for 24 hours. 9. Once 24 hours have passed, ass half of the bottle of yeast from st ep 3 and 750g sugar to the bucket. Stir well, then put a plate on top of the fruit. This will keep it in the liquid.The whole thing should be covered with a damp towel. 10. Add an additional 1. 5 tbsp of sugar to the yeast bottle and fill with water. Replace the balloon in the process. 11. Begin stirring the bucket with fruit once a day for 3-4 days consecutively. 12. The funnel, strainer and fermenter must be washed with sodium metabisulphite solution for adequate disinfection. 13. Transfer the liquid contents of the bucket into the fermenter using the funnel and discard any solids in the process. 14. Any remaining liquid must be placed in bottles, stoppered with cottonwool in the neck and placed in the fridge. 5. Use sodium metabisulphite to fill the airlock to half of each chamber. 16. After a week has passed, use PVC tubing to transfer the liquid at the top into the bucket, ensuring the lees (sediment) is left at the bottom during siphoning. 17. Discard the lees, rinse out the f ermenter and then replace the liquid back into the fermenter. Use bottles from step 14 to top up the fermenter as needed. Taste and add 150 g of sugar if it is too dry. Also add 5mg of Campden tablets. (Warning: Campden sulphur allergies) 18.Repeat step 16-17 (which is a process called racking) about once a week for 3-4 weeks. If sugar added, a record must be kept of the exact quantity. 19. When clearing from the top of the wine has initiated, the airlock chambers are evening out and the hydrometer reading is between 1005 and 995, repeat step 16. 20. Taste the samples. If a sweet wine is desired, put 100-150g of sugar in a saucepan and cover with wine fermenter. Heats until the sugar has dissolved and then gradually add this to the wine until the desired balance of sweetness is obtained. 21.Add 10ml of Sodium metabisulphite and 1000mg of orange flavoured vitamin C (as a preservative). 22. Wash bottles and cork in the solution of sodium metabisulphite and shake out but don’t r inse. 23. Put wine into bottles and cork storing it in a cool dark place. **(refer to journal for information about the key ingredients of the wine making process) 7. 2- Addition of fining agents including ratio calculation: Isinglass Note: The wine used for each fining agent was racked moments before adding the agents. This ensured that any sediment formation with the fining agents would be easily noticeable and recordable. . Read the instructions on the back of the Brewcraft Isinglass bottle. These instructions stipulate that 10mL are mixed in 25L of wine with the 10mL firstly mixed in a 250mL aliquot before being added to the bulk. 2. The wine bottles used in this experiment contained 750mL of wine therefore calculations were performed to find how much Isinglass must be added to 750mL. 3. Firstly divide 10mL by 25,000mLwhich equal 4Ãâ€"10-4. 4. Secondly, multiply 4Ãâ€"10-4 by 750mL which equals 0. 3mL (this is the amount of Isinglass to be used for 750mL of wine). 5.To find how much of the 750mL of wine must be used to initially pre mix the isinglass before adding it to the bulk, the following was calculated: 25,000mL divided by 250mL equals 100; 750mL divided by 100 is equal to 7. 5. Therefore 7. 5mL of wine must be mixed with 0. 3mL of Isinglass before adding it to the 750mL bulk. 6. Extract 7. 5mL of wine using a small disinfected pipette placing this aliquot in a small beaker. 7. Extract 0. 3mL of isinglass with a small disinfected pipette and place it in the beaker with the 7. 5mL aliquot. 8. Mix the fining agent in the aliquot of wine for a few minutes making sure to swirl it as well. . Using a funnel, replace the mixed aliquot back into the 750mL bulk. 10. Label the bottle, indicating the fining agent used and the dosage. 11. Place cottonwool in the neck and return bottle to the fridge. **(refer to journal for information regarding Isinglass) 7. 2- Addition of fining agents including ratio calculation: Kieselsol/Gelatine (Kwik Clear) 1. Read the in structions on the side of the Kwik Clear box. These instructions specify that 2mL of Bottle A (containing Kieselsol) must be added per gallon of wine. 2mL of Bottle B (containing Gelatine) must also be added per gallon. . Simple calculations were conducted to find how much of Bottle A and B is to be use for the 750mL bottles. Firstly 1 Galloon equals 4. 5 litres therefore 4500mL divided by 750mL equals 6. 3. 2mL divided by 6 equals 0. 33mL hence, 0. 33mL of both Bottle A and B is to be mixed into 750mL of wine. 4. Premix is not required for Kwik Clear therefore the fining agents can be directly added to the 750mL bulk. 5. Using a small disinfected pipette, take 0. 33mL of Bottle A and place it directly into the 750mL wine. 6. Stir well, then wait approximately 30 minutes before adding Bottle B. . Using a small disinfected pipette, extract 0. 33mL of Bottle B and place it into the bulk. 8. Mix well then label the bottle to include the name of the fining agent in use and the dosage. 9 . Stopper the bottle with cottonwool and return it to the fridge until ready for testing. **(refer to journal for basic information about Kwik clear (Kieselsol/ Gelatine fining) 7. 3- pH testing: 1. Put on gloves and gather all necessary equipment. 2. Thoroughly disinfect the four beakers, the tip of the pH meter and the funnel with sodium percarbonate solution. 3.Run distilled water over the tip of the pH meter until a neutral ph of between 6. 5-7. 5 is reached (this will ensure that the pH meter is configured properly). 4. Carefully pour an adequate sample of wine in a beaker. 5. Slowly dip the tip of the pH meter and leave it in the wine until the pH value on the monitor becomes constant. 6. Record the value and return the sample of wine to its corresponding bottle using a funnel (make sure the sample is returned from the bottle it was taken from as it would be very undesirable to accidently mix the agents. This would corrupt the whole experiment). 7.Repeat steps 2-6 for all the wines. **(refer to journal for basic information regarding Ph-(power of hydrogen) 7. 4- Vinometer testing: 1. Put on gloves and gather all necessary equipment. 2. Make sure to disinfect the four beakers, the vinometer and the funnel with sodium percarbonate solution. 3. The vinometer testing requires handling of the wine with hands therefore the hands must be disinfected prior to testing or if gloves are worn, make sure the gloves are disinfected as well especially if used in prior tests. 4. While holding the vinometer over a beaker, pour wine into it so that the wine covers the entire vinometer. . Apply pressure using the thumb on the vinometer opening as though pushing the wine in (this will ensure any bubble formations are removed). 6. Once confident that no bubbles are evident flip the vinometer upside down allowing the wine to fall into the beaker. 7. Bring the vinometer up to eye level and read the scale after the fluid has settled (the level is sometimes hard to see as it is very thin). 8. Record the value; this is usually in %v/v alcohol. 9. Repeat steps 2-8 for all the wines. **(refer to journal for basic information regarding Vinometer (% alcohol concentration). . 5- Hydrometer testing: 1- Put on gloves and gather all necessary equipment. 2. Wash all four beakers, the hydrometer, the measuring cylinder and the funnel with sodium percarbonate solution. 3. Carefully fill the cylinder to about 80% with a sample of wine. 4. Gently lower the hydrometer into the wine making sure it does not touch the bottom or the side of the cylinder. 5. Record where the surface of the wine contacts the hydrometer. 6. Repeat step 2-5 for each wine ***(Note: The Hydrometer testing was done incorrectly thus giving inaccurate results throughout each trial.This mistake was only noticed after testing was concluded therefore there was no way of repeating the results. All results obtained a hydrometer reading of 1. 030 which indicates there has been a general mistake with the pr ocedure. The group decided not to use the Hydrometer due to this flaw)*** 7. 6- Turbidity testing (with tube): 1. Place gloves on both hands and gather all necessary equipment. 2. Wash the turbidity tube and funnel in the disinfectant sodium percarbonate solution. 3. Carefully pour wine into the turbidity tube by small increments at a time. 4.Look for when the black lines at the bottom of the tube become slightly visible just enough to see the lines. 5. Record the value at which the lines are slightly visible (this is the turbidity in NTU). 6. Repeat steps 2-5 for each wine. **(refer to journal for information about Turbidity) 7. 7 Sediment level (with ruler): 1. Carefully hold the wine bottle against and angle of strong light until the lees is visible (making sure not to disturb the sediment greatly). 2. Use a ruler to measure the sediment level from the bottom of the bottle to the point at which it finishes. . Record the results to the nearest mm. 4. Repeat step 1-3 for each wine (Note: Sediment measurement should be tested first before anything else so that the lees is not disturbed from movement 7. 8 Electric Conductivity (EC meter): 1. Put on gloves and gather all necessary equipment. 2. Thoroughly disinfect the four beakers, the tip of the EC meter and the funnel with sodium percarbonate solution. 3. Run distilled water over the tip of the EC meter until a reading of 0 is obtained (this will ensure that the EC meter is configured properly). 4.Carefully pour an adequate sample of wine in a beaker. 5. Slowly dip the tip of the EC meter and leave it in the wine until the Electrical conductivity value on the monitor becomes constant. 6. Record the value and return the sample of wine to its corresponding bottle using a funnel (make sure the sample is returned from the bottle it was taken from as it would be very undesirable to accidently mix the agents. This would corrupt the whole experiment). 7. Repeat steps 2-6 for all the wines. **(refer to journal for in formation about EC (Electric Conductivity) 7. EC Conversion to TDS using mathematical formula: 1. The formula stipulates that TDS (ppm or mg/L) = F x EC where F is a factor of 0. 6 and EC is the electrical conductivity in Microsiemens per centimetre. 2. The results taken by the EC meter in class are given in millisiemens therefore to covert to microsiemens simply multiply by 1000. 3. Take the number in microsiemens and multiply it by a factor of 0. 6 as stated by the formula. 4. This is the measurement in TDS (ppm). 7. 10 Alcohol Titration method: 1. Place a 10mL aliquot of wine in a 250mL volumetric flask ( using a small pipette). 2.Distilled water is then used to fill the volume up to the 250mL mark. 3. Take a 20mLaliquot from the 250mL solution and place it in a conical flask. 4. Step 3 must be repeated twice so that there are three flasks to use in 3 separate trials. 5. To every flask a 20mL aliquot of 0. 04 Molar Potassium Dichromate is added. 6. 10mL of 40% sulphuric acid is a dded to every flask with the aid of a measuring cylinder and the teacher (the teacher will have to do this step due to the potency of the acid). 7. Each flask should be stoppered loosely and heated in a water bath at 45-50*c. (water bath must not exceed 50*c). . Once 10 minutes have passed, remove the flasks and add 2 g of Potassium Iodine to all flasks. 9. Fill the burette with Thiosulphate solution (0. 1 Molar). 10. Begin the titration, titrating the contents of the flask with the 0. 1M Thiosulphate solution. When the brown colour of the titrated solution becomes green add 1-2mL Starch. The equivalence point is noticed when the solution turns from blue to light green. 11. Record the result of the titres. 7. 11 Alcohol titration calculations: **(Refer to journal for titration calculations) 8. 0- Results and Data Analysis: 8. 1- graph 1 – PH over time:The above graph displays the pH obtained for each wine over the 5 trials conducted. Initially before adding the clearing agent s, the wine was tested to be at pH 4 as indicated at ‘trial 0’. After the clearing agents were added the pH remained at 4 however the Isinglass fined wine increased to pH 4. 3. Standard wine must be kept at a pH range between 3. 2 and 4. 1 therefore anything over 4. 1 raises alarms and action must be taken to lower the pH using acidic substances. Ultimately 1g of Tartaric acid was added to all wines during trial 1 and subsequently resulted in the decrease in pH observed from trial 1-3.Trial 3 was the point at which the pH of all four wines was recorded at a constant 3. 2 indicating that the Tartaric acid was successful at lowering the pH by almost 1 for all four wines. From trial 3-5 the pH of all the wines is seen to fluctuate once again this is due to the fact that the effects of the tartaric acid have ceased therefore the pH system increases and decreases accordingly as it tries to find a new state of equilibrium. This trend can be related to Le Chateliers principle which states that â€Å"If a system at equilibrium is disturbed, then the system adjusts itself so as to minimise the disturbance.At the end of trial 5 all four wines fell between a stable pH range however following the low pH of trial 3, Isinglass fluctuated to pH 3. 7 as seen in trial 5. This raises the possibility that the pH of Isinglass may have continued to raise. 8. 2- Graph 2 – Alcohol %v/v over time The above is the comparison of alcohol content for all the wines over the 5 trials conducted. All wines clearly tend to show a percentage of alcohol between 4-6% throughout the trials with the overall average being 4. 2%. At the end of trial 5, all four wines recorded a stable 4%v/v alcohol however this is unusual considering that wines are typically 7-14%v/v.The 11%v/v recorded for the control at trial 3 is believed to be due to error as there is no justifiable reason for such an instantaneously high fluctuation. It is seen that all wines containing fining agents record ed an alcohol level that was similar to each other; this was ultimately expected as fining agents do not typically affect alcohol level. These readings from the vinometer can ultimately be relied upon as alternative alcohol testing through the more accurate titration method showed that the alcohol level was at approximately 5% which is the most common value presented throughout the vinometer testing. . 3- Graph 3- Sediment level over time Displayed above is the graphical analysis of the sediment level recorded over time for each wine. There is a clear indication that the wine finned with Bentonite produced the most lees followed by the Gelatine/Kieselsol and then the Isinglass which accumulated the least amount of lees out of the three clearing agents. Overall however, the control (wine without fining agent) showed a very limited accumulation of sediment therefore indicating that sedimentation rate is slower without a presence of a clearing agent.Interestingly the Bentonite also rec orded instant sedimentation of 1. 5cm for the first trial which is more than twice as much as that of the Gelatine/Kieselsol and three times more than the Isinglass and control. The control also displayed the slowest rate of accumulation of lees with a 0. 1cm increase occurring once every 2 trials. Some results show a drop in sediment level; this should ultimately be ignored as the measurement of sediment encompasses an uncertainty of (+- 0. 5cm) therefore the recorded drop in sediment may just be an indication of no change. . 4 – Graph 4- Difference in sediment level over time: The above graph has been constructed to aid in the interpretation of the previous (Graph 3). This displays the difference in sediment level for each wine from trial to trial. Ultimately the total increase of sediment for Bentonite over the 5 trials was +1. 9cm (assuming that the –0. 1 is treated as a no increase rather than a decrease). The Kieselsol/Gelatine recorded a total increase of +1. 6c m. Isinglass obtained a total of +0. 8 and the Control showed a +0. 7 total increase over the 5 trial periods. 8. – Graph 5- Turbidity (NTU) over time: The above ‘turbidity over time’ graph ultimately displays the extent at which the wines were cleared. The results obtained for turbidity show the same trend that is seen in the sediment accumulation graph in terms of the fining agent performance. Bentonite was most effective at clearing the wine, bringing the turbidity down from 600 to 250NTU followed by Kieselsol/Gelatine which was successful in a turbidity reduction from 600 to 300 NTU. Isinglass again presents itself as the weakest clearing agent only clearing the wine from 600 to approximately 450NTU.The Control indicated only a slight decrease in turbidity of 50NTU in total. Notice that major reduction in turbidity for all four wines ceases from trial 3 onwards, this trend was also recorded in the sediment graph. Another trend that is seen in this graph and t he sediment accumulation graph alike is that Bentonite again appears to have the greatest initial impact out of all the fining agents. *The lack in results for trial 1 is due to not having the turbidity tube available at that time. 8. 6- Graph 6- Electric Conductivity over time:Electrical conductivity was tested purely because it can give an indication of TDS through a conversion factor. Again what is immediately noticed is that on the 5th trials, Bentonite had the greatest overall drop in EC/TDS. Followed by Kieselsol/Gelatine then Isinglass. The control showed the least overall reduction of EC/TDS and this is a trend seen in the previous Turbidity and Sediment graphs. (Refer to Journal for raw data tables and the conversion from EC to TDS) 9. 0- Discussion: Through the analysis of the results obtained, many justifications can be drawn as to the fining agent that had the greatest effect on clarification.By graphing the primary trends in turbidity and sediment level, the initial hyp othesis was ultimately rendered incorrect to some extent. It was hypothesised that the Kieselsol/Gelatine would have the greatest fining ability due to the agent being composed of both positive and negative charges. This however was not the case when the results were analysed. Ultimately the Bentonite was recorded to have the greatest fining ability followed by the Kieselsol/Gelatine and then the Isinglass which as predicted, presented itself as the weakest of the three fining agents.The Bentonite agent visibly resulted in the most sediment accumulation, recording a total of 1. 8cm of lees and a turbidity reduction of 350NTU in total. Interestingly, Bentonite also exhibited a very fast rate of efficiency with an accumulation of 1. 5cm of sediment in the very first trial (Graph 3). This was more than double the sediment level of Kieselsol/Gelatine and triple the amount recorded for Isinglass. Similar trends in rapid efficiency are seen in (Graph 5) where Bentonite is noticed to reduc e turbidity by half in the very first trial.These superior clearing abilities stem from the complex molecular composition of the substance. Bentonite is comprised of a multitude of small silicate platelets that are separated by a layer of water molecules (Zoecklein, B. 1988). During the initial Bentonite hydration performed before adding it to the wine, these platelets repel each other and subsequently pop apart. As this occurs, the platelets rearrange and immense swelling takes place which results in an enormous surface area (refer to appendix figure 2).It is this enlarged surface area that grants Bentonite the ability to absorb a greater amount of suspended matter. Further evidence shows that there are more molecular properties that can justify the dominant fining capabilities of the Bentonite agent. Foremost, Bentonite is renowned for its high cation exchange capacity (binding ability) (Catarino, S. 2007). Typically there is a tremendously fast reaction time between positively ch arged protein particulates and the negatively charge Bentonite.It is common for three-quarters of proteins to react with Bentonite within the first minute of contact (Zoecklein, B. 1988). Protein contents from an initial 50-100mg/L can be cleared to less than 10mg/L in most circumstances therefore this high clearing capacity is another reason why such elevated amounts of sediment deposits were recorded during testing. Another aspect to consider is the relationship between ethanol concentration and Bentonite. Scientific research has suggested that there is a proportional relationship between ethanol concentration and the efficiency of the Bentonite fining.This is due primarily to the fact that ethanol separates the silicate layers within the structure therefore allowing larger particles to adsorb to the surface (Harberton, J. 2009). Basically out of the three fining agents, Bentonite is the only one that exhibits this relationship with alcohol thus its flocculation ability is advanta ged when placed in an ethanol rich solution such as the wine. What can further be associated with the Bentonite’s vast flocculation ability is that the agent is not exclusively of a negative charge.Interestingly, the molecular platelet edges are comprised of a slight positive charge (AMCOL, 2005) (refer to Appendix figure 4). This gives the Bentonite an additional aptitude to bind to some negatively charged particles therefore providing a wider range of clearing potential. When looking back on the results obtained, the hypothesis was validated to the extent that the wine without a fining agent (the control) showed least efficiency in clarification. As seen in Graph 3 (sediment level over time), the control not only accumulated very small amounts of sediment but also did this at a very slow rate.An increase of 0. 1cm is noticed only once every two trials whereas the fining agents show a substantial increase nearly every single trial. The same goes for the turbidity reduction ( Graph 5) where the control is seen to take approximately three trial periods to attain a decrease of a mere 50NTU. Although the control showed signs of clearing due to gravity, it is substantially slower than that of the fining agents. A scientific principle set out by physicist George Stokes in 1851, aids in the conceptualisation of why the fining agents are more efficient in sedimentation.Stokes’ law states that the rate of sedimentation of a spherical particle is directly proportional to the difference in density of the particle and the liquid, the acceleration due to gravity and the radius of the particle (Stoyanov, P. 1980). By the application of this law, it stands to reason that a fining agent causes swifter sedimentation as it increases the radius of the particles through electrostatic binding and this in turn causes the particles to have a greater density ultimately increasing the rate of clarification It was also initially hypothesised that Isinglass would perform l east efficiently out of the three fining agent.This was confirmed through the data analysis which showed that Isinglass produced three time less sediment than Bentonite and only reduced turbidity by 150NTU unlike Kieselsol/Gelatine which reduced turbidity by 300NTU and Bentonite which resulted in a 350NTU reduction. Isinglass was ultimately not anticipated to have great fining abilities due to its gentle nature which renders it more suitable for wine polishing rather than heavy clearing (Chorniak, J. 2007). According to external scientific sources, the overall fining rate of Isinglass stands at a low 0. 2 – 0. 1g/L-1 therefore adding justification as to the low sediment yields recorded for Isinglass in this chemistry experiment. There is however another biochemical issue that may have attributed to the underperformance of the Isinglass agent. Collagens such as isinglass are typically dependant on temperature for chemical stability. At high temperature most collagens begin to decompose on a molecular scale. Isinglass starts to denature at a relatively low temperature of approximately 10 °C.This denaturing process results in a reduction of molecular weight which consequently weakens the fining ability (Hornsey, I. 2007). Throughout the course of this experiment, the wines tested were exposed to temperature of over 18 °C hence leading to the presumption that this may have contributed to isinglass’ lack in performance. When analysing the data to a greater extent, there was a very crucial trend that was established which may have affected the performance of all the clearing agents. pH is ultimately seen to have an inversely proportion relationship with the binding ability of the fining agents.As pH increases, the strength of the electrostatic attract between the fining agent and particles is subsequently decreased. This principle is extensively evident for all three fining agents tested in this experiment. Notice that after trial 3 (graph 5) the t urbidity no longer shows improvements for both Bentonite and Isinglass and only exhibits a minimal improvement for Kieselsol/Gelatine. This is also notice for the sediment level (graph 3) which shows only very slight increases in sediment accumulation after trial 3.This reduced performance after trial 3 may be due to the fact that the pH of all wines began to fluctuate from trial 3 onwards (refer to graph 1). Overall it is seen that the clearing agents performed best when the pH was reducing during trial 1 and 2 and started to perform poorly when the pH began to fluctuate from trial 3. To comprehend this phenomenon it is important to understand the concept of the Isoelectric point (pl). Basically all proteins or other suspended particles have a certain pH at which the particles carry no net charge.If the pH of a solution is too high or near the isoelectric point, the particulates will not be sufficient in electrostatic attraction because at a high pH, the molecules carry an equal nu mber of positive and negative charges resulting in neutralisation (Zoecklein, B. 1988). This is also true for the fining agents which lose electrostatic charge when there is even a slight increase in pH. Recent studies that tested the net charge of isinglass in different pH medium show that even a small increase of 0. 5 pH resulted in the reduction of approximately half the net charge of the isinglass agent (Ward, I. 000) (refer to appendix figure 3). This evidence adds credibility to the justification that the rise in pH may have indeed contributed to the trend noticed in all the fining agents. Alternatively however there is the possibility that the fining agents simply reached their capacity and began decreasing in efficiency after trial 3 indicating that more fining must be added. Overall through the in-depth interpretation of the data; the performance of the fining agents can be justified and links can be draws as to the agent that performed the best and worst (the Bentonite and Isinglass respectively).However although this experiment was successful in giving reasonably good results it is undoubtabley encompassed by multitudinous amounts of human error and uncertainty that may render it flawed to some extent. The major flaw to this experiment is that sediment was not siphoned after every trial. The group initially chose not to siphon the lees so that results could be easily recorded. However what was not realised is that every time the wine was poured out for testing, the deposit of sediment was resuspended into the wine therefore may have resulted in highly inaccurate results especially for turbidity.Another associated human error is that members from the group at some stages touched the wine with bare hands that were not disinfected especially during Vinometer testing. This holds a great risk that the wine may have become contaminated thus predisposed to bacterial manifestation which would render the experiment invalid. Gloves were only used after the 2n d trial period once the group noticed the risk of contamination. Other possible sources of contamination include the fact that some equipment were not washed with sodium metabisulphite before making contact with the wine, this again posses high risk of bacterial growth.At one stage there was speculation whether the wine had indeed contracted a bacterial strain. This is due to the hazy/cloudy appearance of the wine despite the extensive fining that was performed. Although turbidity was slightly reduced by the fining agent, the wine still seemed awfully turbid. This could be a sign of a bacterial colony which causes a liquid to appear murky and is ultimately untreatable by the fining process. When expert opinion was consulted about the wine, it was concluded that the turbid appearance was not due to bacteria.If the wine had been infected, it would have had a very ‘off’ taste which was not indicated during the weekly wine tasting. What must be noted is that because the win e in this group was created with oranges, it will never have a very clear appearance due to the thickness and dark colouration of the orange contents. Common wines made from grapes are naturally very clear due to the transparency of the grape juice by nature. It was therefore presumed that the turbid look of the wine was due to the natural composition of the oranges it was made from.If this experiment was to be performed again, many improvements must be made to ensure more accurate and valid results. It is recommended that more emphasis must be placed into contamination control and management during the winemaking and wine testing period. This will ensure no foreign material spoil the validity of the experiment. Also there was major uncertainty in the equipment used. Firstly the ruler used to measure sediment carries a +/- 0. 5cm uncertainty which is major especially when measuring something so small such as sedimentation deposit.Maybe a more accurate measuring tool with a smaller s cale can be used in the future for the lees measurement. Furthermore all testing including pH, Turbidity, Vinometer etc were only done once every trial period whereas it is advisable to always test a sample 3 times in a row to ensure consistency in the results. This was not done in this experiment as time restraints did not allow for repeated testing. If these simple improvements can be implemented for future testing, the results will be more accurate which will in turn provide more credibility to the findings. 10- Conclusion:The process of wine making and testing was a long and arduous task that involved many procedures. Although there were some minor flaws involved with the testing, the experiment was considered an overall success. The aim from the start was to see which flocculation agent would have the greatest effect on wine clarification and through extensive testing the results clearly indicated the superior fining agent. The Bentonite was undoubtabley the most powerful flocc ulation chemical and resulted in the greatest reduction in turbidity and also the greatest increase in sedimentation.The trends and patterns in the data were evaluated and scientific justifications were made as to why each fining agent performed to the extent that was witnessed. Ultimately relationships between variables were established as explanations that coincide with the performance of the fining agents. Wine pH, alcohol level and temperature are concluded to have a drastic effect on the flocculation abilities of the fining agents. These variables must be monitored and adjusted accordingly as the efficiency of the clearing agents are found to be very dependent upon their values.For future reference, pH is seen to affect the electrostatic bonding abilities of the substances, alcohol levels have a proportional relationship to the fining abilities of Bentonite and temperature (either to low or to high) affects the efficiency of the chemical fining process especially that of the Is inglass. With this in mind it can be concluded that the fining agents did help in the clarification of the wine however were affected by many variables that must be taken into account if this experiment was to be performed in future. By Mario Mitov 11- Appendix: {FIGURE 1}.Below: Diagram of the electrostatic flocculation process exhibited by most fining agents. {FIGURE 2}, Below: A depiction of the Bentonite surface area expansion that is initiated during the hydration stage. This is one of the main reasons why Bentonite is such a powerful flocculation agent. From left to right; Water molecules between the silicate layers, Layers then pop apart during hydration, the platelets rearrange and swelling takes place, once rearrangement has occurred the surface area is greater than before hydration. Diagram sourced from (Zoecklein, B. 1988) FIGURE 3} Below: Scientific studies conducted for isinglass that shows an increase in pH results in electric charge depletion thus weakening the fining agent. {FIGURE 4}, Below: A depiction of the Bentonite molecular structure, Notice that the edges are +ve (positively charged) and the inner area is predominantly of a negative charge (-ve). Because Bentonite has slightly positive charged edges it is advantaged in its fining ability. Image sourced from http://www. amcoldetergents. com/Resources/How%20Bentonite%20Softens%20Through%20the%20Wash. pdf 12- References: Books (alphabetical order): Biers,W.The Archaeology Of Greece. New York. Cornell University Press 1980. Retrieved June 8th 2011 Boulton, R. (1996). Principles and Practises Of Winemaking. New York. Chapman & Hall 1996. Retrieved June 9th 2011. Fugelsang, C. (1997). Wine Microbiology. New York. Chapman & Hall 1997. Retrieved June 9th 2011. Smith, D. (2009). Chemistry In Use. Australia. McGraw Hill Australia. Retrieved on multiple dates throughout research. Stoyanov, P. (1980). Medical Chemistry and Biophysics Concepts. Bulgaria. CIELA publishers. Retrieved June 14th 2011 fr om home (published in Bulgarian but translated).Internet (alphabetical order): Adams, P. (2005). Grape glut sours wine industry. Retrieved 8th of June 2011 from http://www. abc. net. au/landline/content/2005/s1349757. htm AMCOL,(2005). Bentonite: A technical overview. Retrieved June 14th 2011 from http://www. amcoldetergents. com/Resources/How%20Bentonite%20Softens%20Through%20the%20Wash. pdf Catarino, S. (2007). Effects Of Bentonite Characteristics On The Elemental Composition Of Wine. Retrieved June 13th 2011 from http://pubs. acs. org/doi/abs/10. 1021/jf0720180 (downloaded scientific article) Chorniak, J. 2007). A Clearer Understanding Of Fining Agents. Retrieved June 15th 2011 from http://www. winemakermag. com/stories/techniques/article/indices/12-clarityfiltration/26-a-clearer-understanding-of-fining-agents Guerra, B. (2008). Choosing A Fining Agent. Retrieved June 11th 2011 from http://www. newworldwinemaker. com/articles/view? id=342 Harbertson, J. (2009). A Guide To The Fin ing Of Wine. Retrieved June 13th 2011 from http://cru. cahe. wsu. edu/CEPublications/em016/em016. pdf Hornsey, I. (2007). The Chemistry and Biology of Winemaking. Royal Society Of Chemistry.