Polymers in Dentistry A polymer is a very long molecule that is made by linking together many smaller molecules called monomers. Some polymers contain only one type of monomer and others can be made from a combination of two or more different monomers. Polymers can be synthetic (produced by humans) or natural. Polymers that can be heated and molded into specific shapes and forms are commonly known as plastics. All plastics are synthetic polymers. Adhesives‚ chewing gum‚ and polystyrene are also
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Activity: Psychology ? Course code and Title: Lecturer: Writer: ID# Date: March ‚ 2013 Table of Contents The Meaning of Psychology Introduction After examining the large realm of the science of psychology I now realize that my initial definition “the study of the mind and how it worked” was quite incomplete. My initial definition simply covered the branch of psychology known as cognitive psychology‚ and this is only one of many areas that are actually included under the
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Polymer Chemistry Classification of Polymers – Notes prepared by The most common way of classifying polymers is to separate them into three groups - thermoplastics‚ thermosets‚ and elastomers5. The thermoplastics can be divided into two types - those that are crystalline and those that are amorphous. You may click on the words in the diagram below to learn more about these classifications. Thermoplastics Molecules in a thermoplastic are held together by relatively weak intermolecular
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1.1 DEFINING POLYMERS Polymers are materials of very high molecular weight that are found to have multifarious applications in our modern society. They usually consist of several structural units bound together by covalent bonds [1‚2]. For example‚ polyethylene is a long-chain polymer and is represented by ÀCH2 CH2 CH2 À or ½ÀCH2 CH2 Àn ð1:1:1Þ where the structural (or repeat) unit is ÀCH2ÀCH2À and n represents the chain length of the polymer. Polymers are obtained through
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www.nvfoundation.com Application Form for Admission to MBBS / PG / MDS Programs National Vidya Foundation 51‚ Dr. Abani Dutta Road‚ Howrah‚ WB - 711101 COURSE APPLYING FOR MBBS PG (MD/MS) MDS Applicants Passport Size Photo Application for Admission to Ivano Frankivsk National Medical University‚ UKRAINE Specialization ________________________________________________ Write in BLOCK LETTERS only PERSONAL DETAILS Surname Middle Name First Name Date of Birth D D Nationality Father’s
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styles. Firstly‚ people born at the same period of time often have similar experience of life thus may have a distinctive parenting methods. Gilleard and Higgs (2002) described this ‘generation’ as having a ‘share temporal location’ and noted as ‘birth cohort’ or ‘generational site’. Each generation is molded by knowledge and skills during their critical developmental periods. The combination of similar life experience may shape how family rules are established. For example‚ Ruggles (1987) pointed
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Following of our actions in our daily life are parts of physics study. 1) When we walk or run‚ our motion is part of laws of mechanics and thrmodynamics. 2) We eat food which undergoes chemical reactions producing heat energy which is converted into mechanical energy 3) Use of refrigerator‚ pressure cookers‚ washing machines‚ television‚ music system‚ computers‚ etc. are all designed on the principles of physics. 4) When we speak‚ we produce sound properties of which like pitch and
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Synthesizing Polymers “Making Silly Putty” In college‚ there are many things students take for granted. One thing we all take for granted the most is keeping a fresh perspective on the curriculum we are taking. This is an especially hard task when it comes to the more challenging subjects like science and mathematics. Chemistry‚ in particular is one of the most challenging subjects for any student‚ and many factors contribute to the students’ understanding of the course. Things like the right professor
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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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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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