determination? How is this done? Distance determination is the process of estimating the distance between where a shot is fired and it’s target. This is done by examination‚testing and comparisons of residues. What is the Greiss Test? The Greiss test is a test that uses chemicals to develop gunpowder residue patterns‚ particularly around bullet holes. When a bullet is retrieved‚ how is it marked for identification purposes? What should be avoided? When a bullet is retrived it is marked for identification
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Leibermann-Burchard Test i. Objectives: To determine the presence of unsaturated sterols‚ in this test‚ cholesterol in the given sample. ii. Results Sample Observations Residue C Blue green solution Vegetable Oil Emerald Green solution iii. Discussion Cholesterol is a member of a large group of substances called steroid‚ which include vitamin D. Cholesterol is an essential component of cell membrane‚ brain and nerve cells‚ and bile‚ which helps the body absorb fats and fat soluble vitamins. The
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THE COMPOUND DESCRIPTION Table 2. Observation on the crystallization of crude sample SAMPLE OBSERVATIONS Mixture of crude sample and solvent Mixture on steam bath Mixture on a ice bath Suction filtration a. filtrate b. residue Air dried crystals Table 3. Determination of percent yield of aspirin weight of sample +
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mixture results in a dark‚ yellow‚ greasy liquid. Within crude oil‚ there are many different types of fuel that are used for different objects‚ depending on the number of carbon bonds. Some of these fuels are refinery gas‚ petrol‚ paraffin‚ diesel‚ residue‚ etc. It is possible to extract all these types of substances using a
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In the Third Century B.C.E.‚ Euclid formalized‚ in his book Elements‚ the fundamentals of arithmetic‚ as well as showing his lemma‚ which he used to prove the Fundamental theorem of arithmetic. Euclid’s Elements also contained a study of Perfect numbers in the 36th proposition of Book IX. Diophantus of Alexandria wrote Arithmetica‚ containing 130 equations and treating the essence of problems having only one solution‚ fraction or integer. Congruence relation Modular arithmetic can be handled mathematically
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analyses of the human personality. Another important assumption is that people have motives and feelings that are beneath immediate awareness which means that people does not only learn from observable actions and responses but also from the emotional residue of previous experience. In the movie‚ Mr Keating used the psychodynamic approach of leadership with his students. For example‚ in the class where he conveyed his thoughts to his students encouraging them to relentlessly pursue their passions
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The Secret Annex Imagine living in a 16 ft. 7 in. house with eight people! During the 1940’s the Franks were in hiding from the Nazis. The living conditions were not always the best. But Anne Frank does say that the conditions were “Ideal”. (Stitching) The Annex was located on 263 Prinsengracht rd. The Annex was hidden behind a bookcase above a warehouse where Anne’s father used to work before they went into hiding. Because of the constant fear of discovery‚ at times the people of the Annex couldn’t
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On March 5‚ 1770‚ a group of brave colonists gathered around a British Soldier at a local tax office. They hurled insults at the soldier‚ and with the confusion that ranged gunshots were heard; Five men were found wounded on the ground. Although the Boston Massacre seemed to be the colonists’ fault since they started off by hurling insults‚ we must remember how the British Soldiers treated the colonists before. For example‚ the Quartering Act forced families to have open their homes to British Soldiers
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Introduction Genetically modified foods‚ which have been around since the early 1990’s‚ are proving to be a growing area of concern in the marketplace today. However without mandatory labeling laws‚ consumers are forced to buy foods which may contain unknowingly harmful chemicals that can be detrimental to their personal as well as their families’ health. It essential therefore that information on the hidden dangers of their genetic and chemical alterations must be made public. Moreover
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This page intentionally left blank Now into its eighth edition and with additional material on primality testing‚ written by J. H. Davenport‚ The Higher Arithmetic introduces concepts and theorems in a way that does not require the reader to have an in-depth knowledge of the theory of numbers but also touches upon matters of deep mathematical significance. A companion website (www.cambridge.org/davenport) provides more details of the latest advances and sample code for important algorithms. Reviews
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