Isolation and identification of an unknown bacterium Pillay‚ Esmerelda (209504371) School of Biochemistry‚ Genetics and Microbiology Department of Microbiology University of Kwa-zulu Natal 25 October 2010 ABSTRACT Different types of bacteria in various forms are found all around us‚ and it is a microbiologist’s job to be able to identify these bacteria. Using various staining techniques and physiological tests‚ an isolated bacterium can be identified. In this experiment‚ a single bacterial
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Isolation of Caffeine in Tea Introduction Today’s world is addicted to coffee and tea for an easy wake up. Both contain caffeine‚ a drug known for its stimulant properties. Tea‚ by weight‚ contains approximately 2-4% caffeine‚ and the average cup of tea has anywhere from 40 to 120 mg of caffeine (Landgrebe‚ 327; Mayo Clinic Staff). According to the American Heart Association‚ caffeine not only stimulates the brain and nervous system‚ but it releases fatty acids from adipose tissue‚ and affects
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It has a physical significance‚ as well as an emotional significance. It seems to find a part in the life of everyone in the community. There are many situations in the story where the boy feels separated and detached from Mangan’s sister‚ his love. His feelings for her are so strong that he feels he needs to isolate himself in order to keep her out of reach. Even though they barley communicate‚ the mere image of her brings him much happiness. As the boy illustrates
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Isolation in light and shadow The painting “New York Movie” is an incredible painting with significant use of light and shadow and the contrast of warm and cool colors. It’s not just a painting of a nicely dressed lady in a theater. It’s very intense and strong. Edward Hopper defines the isolation of urbanites by the design of this painting. The arrangements of figures and settings capture the moment of “not belonging”. By the composition‚ contrast of colors and the use of light and shadow‚
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The pivotal theme of isolation and alienation from mankind highlights Firdaus’s indifference‚ even disdain towards human society. Firdaus’s bold opening statement has lucratively proven a unique outlook of Firdaus’s life “Let me speak. Do not interrupt me.” (1) The rigorously crafted manipulation of short sentences not solely fastens the pace of the extract‚ yet conjointly builds up the chronological train of thought throughout the extract. The passage begins with short sentences‚ that sets the scene
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RELATIONS AND CRISIS MANAGEMENT PREPARED FOR : MADAM. NORAZIAN BINTI ABDUL AZIZ PREPARED BY : AIN NADIRA BINTI SHAHARIN (4111001521) SUBMISSION DATE : 24TH OCTOBER 2013 LIST OF OFFICIAL INSTAGRAM (INTERNATIONAL AND LOCAL) According from Wikipedia‚ Instagram is define as an online photo-sharing‚ video-sharing and social networking service that enables its users to take pictures and videos‚ apply digital filters to them‚ and share them on a variety of social networking services‚ such
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Once the aspirin is prepared‚ it is isolated from the reaction solution and then it is purified. The aspirin is insoluble in cold water‚ and it is isolated by filtering the chilled reaction solution. Purification is essential to remove any unreacted salicylic acid and acetic anhydride as well as the acetic acid product and phosphoric acid. Acetic anhydride is caused to decompose by the addition of water once the formation of aspirin is complete. C4H6O3 (Acetic anhydride) + H2O (Water) ------------------------->
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children but her daughter died from a throat cut before she escaped to Ohio. When she arrived in Cincinnati‚ Ohio‚ she lived in a haunted house with her daughter‚ Denver‚ her two sons‚ and her mother-in-law‚ Baby Suggs. However‚ by 1873‚ Sethe and Denver were the only people living in the house because Baby Suggs had passed away and Sethe’s two sons ran away from the family (Morrison 3). As the story continues‚ readers are introduced to Paul D‚ who was also a former slave from Sweet Home Farm and would
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synthase‚ a special enzyme that helps the oxygen found in hemoglobin make its way into body tissue. High altitude also triggers an increase in our heartbeat‚ breathing and urination. The low humidity and low air pressure at high altitudes causes moisture from our skin and lungs to evaporate at a faster pace and our body’s increased exertion requires even more water to keep it hydrated. Besides that‚ less of oxygen also can cause a cluster of symptoms called altitude sickness. People living at or visiting
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EXPERIMENTAL PROCEDURE: 1. 2.07 g of the mixture of naphthalene and benzoic acid was weighed accurately on a balance. The mixture was then dissolved in 40 ml dichloromethane and the solution was poured into a separatory funnel. 2. 20 ml of aqueous sodium bicarbonate solution was added to the dichloromethane. A stopper was placed on the separatory funnel and was shaken and pressure was frequently released. The 2 liquids separated into clear layers and the lower layer (dichloromethane layer) was
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