Introduction Polytetrafluoroethylene (PTFE)‚ more commonly known as Teflon‚ is a polymer. Polymer is a substance which contains many structural units that are joined the same type of linkage.(1) Hence‚ the molecular structure of polytetrafluoroethylene is based on a chain of carbon atoms. However‚ unlike some other fluoropolymers‚ in Teflon the chain is completely surrounded by fluorine atoms.(2) There is a very strong bond between fluorine atoms and the carbon as the fluorine atoms act as a protective
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NIST is trying to change the firefighting tactics and strategy in order to make the job safer for firefighters‚ and also to decrease victim’s mortality rate. The idea is by cooling the house on fire by throwing water on it‚ either from inside or outside‚ by doing so‚ it’ll also decrease the toxic gases inside the house. When a building in on fire‚ two things will help put the fire out‚ adding water to the fire and by having a proper ventilation. It is undeniable that has been changes in the residential
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The track is made out of polyurethane‚ a sort of rubbery‚ bouncy substance; this surface is durable for all weather and offers exceptional shock absorption. On the other hand‚ cross country typically runs on trails which can be hilly‚ muddy‚ or sandy. The terrain in cross country is
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Today I am going to be talking about the history of Skateboarding. Skateboarding first appeared in the 1950’s. It started when California surfers wanted to surf when the waves were flat. Nobody really knows who invented skateboarding‚ people just had similar ideas. People would take the wheels off of roller-skates and attached to a two by four. They realized that skateboarding could recreate the feeling of riding a wave. It was during this time that modifications were made to the trucks making
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price difference. This shows the importance of market research and branding‚ TOPSHOP’s reputation and brand awareness allows them to sell product at a higher price than other market competitors. Both products are made from the same material 100% Polyurethane but TOPSHOPS modifies the basic shape by adding multiple seams and a metal
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Technology‚ the milestone of the century which incorporates “the application of scientific knowledge for practical purposes” has benefitted our world and our lifestyle in countless different ways. One of the most important implementations of technology in our lives is in sports‚ more specifically‚ how recent developments in sporting technologies have increased performance in athletes. Recent developments in sporting technologies have created a variety of products aimed at improving and increasing
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Operations Management Great Northern Bunk Beds‚ Inc. Introduction Deciding whether to invest or not is a complicated task for today’s companies. Managers need to make thorough studies‚ analysing additional costs and revenues‚ in order to be able to make the most reasonable decision. A big investment implies a great expenditure and‚ generally‚ a late return. If a company does not consider thoroughly the requirements and the outcomes of a particular investment‚ the organization may suffer
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Woodward Fab WFB2 Manual Pipe and Tube Bender Available at Redline Engineering Description: This video briefly describes the Woodward Fab WFB2 tube and pipe bender. This bender can be used to create roll cages‚ chassis‚ and motorcycle frames. The WFB2 manual pipe and tube bender can be used in fabrication shops of any size. The bender is manufactured from 1/2ʺ steel‚ and is provided with all steel dies. The steel dies are available in 3/4″‚ up to 2ʺ in diameter. Square dies are also available from
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Malunggay (Morringa Olifera) Seed Extracts as an Effective treatment for Dandruff (Seborrhic Dermatitis) Problems This research proposal presented to Mrs. Myrna H. Conol Of Caraga Regional Science High School San juan‚ Surigao City In Partial Fulfillment of the Requirement In the subject Advance Statistics Harold V. Sol INTRODUCTION Dandruff (Seborrhic Dermatitis) is the shedding of dead skin cells from the scalp. Dandruff should not be confused with a simple dry scalp. As
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■ What causes quantity supplied to change? Answer: Only a change in the price of a product can cause a change in the quantity supplied. (Stone 63) 11. In December of 2005‚ the Wall Street Journal reported that Clark Foam‚ a major supplier of polyurethane cores (blanks) for hand-shaped surfboards‚ closed its plant and went out of business (Peter Sanders and Stephanie Kang‚ “Wipeout for Key Player in Surfboard Industry‚” The Wall Street Journal‚ December 8‚ 2005‚ p. B1). Clark Foam was the Microsoft
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