Chemical Aspects of Life and Spit Lab Formal Report 1. Abstract The objective of the Reducing Sugar Test was to test if the substance has a reducing sugar in it by adding Benedict’s solution and heating it‚ there would be a color change if a reducing sugar is present‚ or it will remain blue (no reducing sugar). The objective of the Starch test was to test for starch in substances by using Iodine. The iodine will cause a substance to turn to a dark blue color if it is positive for starch. The objective
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polypropylene Part A. Injection molding of polypropylene samples for mechanical testing. Introduction Injection molding is the most productive and popular polymer processing techniques. Almost 70% of all plastic parts are made using injection molding. Injection molding of plastics is a process similar to die casting of metals. Molten polymer is injected under pressure into a mold. Method Put the plastic material (Polypropylene) in granular form into the hopper. Set the injection molding
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RAMAZANOV Baku State University‚ Baku‚ Azarbaijan E-mail: mamed_r50@mail.ru Several composites have been studied for static dissipationand microwave absorbing materials based on polyaniline with metallic oxides. These composites which are conducting polymers have been widely used because of their lower density as well their good environmental stability as in the case of polyaniline (PAN). In the present work ‚ in situ polymerization of aniline was carried out in the presence of Fe3O4 nano particles to
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conventional methods (trial and error). • By using molecular modelling‚ only molecules that fit with the active sites’ of the target are made and undergo clinical test. • Molecular modelling also used to design many other compounds like pesticides and polymers with specific characteristics. A Brief History of HIV-AIDS • Early on 1988 X-Ray Crystallography were used to determine the shape of HIV protease. • Discovery of a molecule that block its active site is a one step to the cure. • By
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Reference: To appear in: S0141-3910(10)00062-5 10.1016/j.polymdegradstab.2010.02.008 PDST 5967 Polymer Degradation and Stability Received Date: 17 December 2009 Revised Date: 2 February 2010 Accepted Date: 7 February 2010 Please cite this article as: Grause G‚ Ishibashi J‚ Kameda T‚ Bhaskar T‚ Yoshioka T. Kinetic studies of the Decomposition of Flame Retardant Containing High Impact Polystyrene‚ Polymer Degradation and Stability (2010)‚ doi: 10.1016/j.polymdegradstab.2010.02.008 This is a PDF file
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materials‚ e.g.‚ cellulose derivatives‚ casein‚ or milk protein‚ but are more commonly synthetic resins. In either case‚ the binder materials consist of very long chainlike molecules called polymers. Cellulose derivatives are made from cellulose‚ a naturally occurring polymer; casein is also a naturally occurring polymer. Synthetic resins are polymerized‚ or built up‚ from small simple molecules called monomers. Plasticizers are added to a binder to increase flexibility and toughness. Fillers are added
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biocomposites Authors: M.s. Abu Bakar‚ P. Cheang‚ K.A. Khor Journal: Materials Science and Engineering A345 (2003) 55-63. In the present article‚ the authors investigate the use of flame spheroidized hydroxyapatite particulates in a PEEK polymer for usage as bone analogue materials. Metallic implants have been used for orthopedic implants in the past‚ but polymeric implants have been explored due to stress-shielding issues associated with metallic implants. Wolf’s Law states that if bone
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of the plastic materials. Cassava is basically composed of starch. Cassava starch is composed of two components: amylose and amylopectin. An amylose is a long straight chain of polymer of anhydroglucose units. An amylopectin is a branched chain compound‚ also of anhydroglucose units. Because plastics are made of polymers‚ starch is a very favorable raw material in plastic-making. The study was limited to one species of cassava‚ Manihot esculenta. The plastic produced was treated with different amounts
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“New indoor shooting range ready to open” Summary This article is mainly about a local shooting range that just opened and is ready for shooters. Stephen Stewart’s C.I. Shooting Sports‚ 700 Wylie Drive‚ in the Crossroads Center‚ has 16 shooting lanes – all rifle-rated‚ he said. He also comments‚ “You’re looking at the best range equipment made.” The bullets are slowed and stopped by chunky rubber at the other end of the shooting range. Stewart describes it as “shooting into a bed of rice
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ORGANIC MACROMOLECULES 1. What is a polymer? 2. Man-made polymers have been studied since 1832. Today‚ the polymer industry has grown to be larger than the aluminum‚ copper and steel industries combined. Polymers already have a range of applications that far exceeds that of any other class of material available to man. Give examples where polymers are applied in each of these categories: a) Agriculture b) Medicine c) Consumer Science
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