1. What does it mean when a polymer is crosslinked? Crosslinked is one manner in which monomers link together. In this method‚ separate polymer chains are connected via bonds between the individual polymer chains. 2. We discussed how polymer linking and structure contribute to its properties. How would you expect the density‚ elasticity‚ and rigidity of a polymer that is branched to compare to one that is linear? I would expect the density of the linear polymer to be much higher than the density
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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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Proteins Are the basic materials of every body cell. Body cells are constantly wearing out. As a result‚ they are continuously in need of replacement Of the six nutrients group‚ only proteins can make new cells rebuild tissue. By the age of 4 years‚ body protein content reaches the adult level of about 18% of body weight. An adequate supply of proteins in the daily diet is essential for the maintenance of health. The word protein is a Greek derivation and means “of first importance”. Composition
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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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Effect of Protein Intake on Strength‚ Body Composition and Endocrine Changes in Strength/Power Athletes Introduction: Proteins are often called the building blocks of the body. Protein consists of combinations of structures called amino acids that combine in various ways to make muscles‚ bone‚ tendons‚ skin‚ hair‚ and other tissues. They serve other functions as well including nutrient transportation and enzyme production. Adequate‚ regular protein intake is essential because it isn’t easily
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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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Article pubs.acs.org/Biomac Self-Adjuvanting Polymer−Peptide Conjugates As Therapeutic Vaccine Candidates against Cervical Cancer Tzu-Yu Liu‚† Waleed M. Hussein‚† Zhongfan Jia‚‡ Zyta M. Ziora‚† Nigel A. J. McMillan‚∥ Michael J. Monteiro‚‡ Istvan Toth‚†‚§ and Mariusz Skwarczynski*‚† † School of Chemistry and Molecular Biosciences‚ The University of Queensland‚ Brisbane‚ QLD 4072‚ Australia Australian Institute for Bioengineering and Nanotechnology‚ The University of Queensland‚ Brisbane
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PROTEIN TRANSLATION 1. Initiation Translation To begin translation: large and small ribosomal subunit‚ along with the initiating tRNA‚ assembles onto the mRNA 2. Translation Elongation The next amino acyl-tRNA enters the ribosome at the A site The amino acid at the P site is transferred to the tRNA at the A site. The ribosome moves one codon farther along the mRNA‚ releasing the empty tRNA through the E (exit) site. The A site is free for the next incoming RNA. The cycle is repeated as the
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FOOD LAB Title Food Lab Abstract The aim of this report is to see if the any of the four food apple sauce‚ carrot juice‚ cracker juice‚ and turkey juice contain protein‚ starch‚ or sugar. Between these four foods two are positive for sugar which are apple sauce and carrot juice. Sugar is an organic molecule of carbohydrate and so is starch. The starch was positive in two of the foods which are cracker juice and carrot juice. Protein is its own organic molecule and only one food tested positive
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