Roman Engineering: Pont du Gard The Pont du Gard is an ancient Roman aqueduct that crosses the Gardon River near the city of Nīmes‚ previously known as Nemausus‚ in southern France. It was fabricated during the first century AD. The bridge portion of the Pont du Gard is made up of three tiers‚ and is a staggering nine-hundred-and-two feet long and one-hundred-and-sixty feet tall at its uppermost point. The entire aqueduct stretches for roughly thirty miles. Marcus Vipsanius Agrippa‚ deputy to
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Du Pont: The Birth of the Modern Multidivisional Corporation HARVARD BUSINESS SCHOOL August 2008 RICHARD S. TEDLOW DAVID RUBEN The year 1919 should have been a very good one for E. I. du Pont de Nemours and Company. World War I had blessed the 117-year-old‚ Delaware-based explosives manufacturer with the kind of booming growth that only an arms-maker in a global conflagration can dream of. The company had then leveraged this wartriggered glut of cash‚ plants‚ and personnel to accelerate its
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and textile industry Kevlar. Kevlar is made of an extremely strong fabric called an aramid fabric‚ which is chemically related to nylon. This fabric is very tough and durable‚ is then woven in a pattern similar to tiny spiderwebs all interlocked to provide additional strength and durability. Aramid fibres like Kevlar are resistant to wear‚ tear and heat‚ and have no melting point. What is its main use? Kevlar is one of the strongest materials on earth. It is a fiber that when woven together
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Samuel Francis Du Pont played perhaps the most influential role in the direction that the United States Navy has taken in the past 200 years. His skill as a naval officer helped the US to win wars‚ and his efforts to improve the nation’s Navy have proven vital in the development of what is today the most powerful navy the world has ever seen. Du Pont was born in New Jersey on the 27th of September in the year of 1803 into a very renowned family. His uncle was the founder of a successful gunpowder
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Amanda Sosa Period 3 Kevlar!!! 1. Give an analogy explaining how the chemical structure of Kevlar makes it strong. Because the polymer Kevlar forms chains like structures‚ its crystallinity‚ the way the polymer is arranged and stacked is like stacking wood in nice tightly packed bundles. To explain the incredibly strong intermolecular forces of the hydrogen bonds I would compare it to a magnet‚ the chains are attracted to each other like the attraction between magnets and their hard to
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Financially flexible firms are able to avoid financial distress in the face of negative shocks‚ and to fund investment at low cost when profitable opportunities arise. The importance of financial flexibility can be seen in E.I. du Pont de Nemours and company (Du Pont) case. Du
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Applied Research on Creative Du Pont Analysis System in Listed Companies CHENG Lamei‚ TANG Bin School of Business and Management‚ Chang Chun University of Technology‚ P.R. China‚ 130012 chenglamei1962@126.com Abstract: The theory of traditional Du Pont Financial Analysis System is based on the purpose of maximizing stockholders’ equity and the core evaluating indicator of Du Pont Financial Analysis System is “Return on Equity”‚ therefore‚ it reflects concerns on maintaining and adding values on
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cloth. Good portions of these are combinations of synthetic fibers woven or threaded together to make a final product. These synthetic fibers are a large group of polymers. Synthetic polymers offer more possibilities‚ since they can be designed with molecular structures that impart properties for desired end uses. All fibers are ploy-something or polymers. That means they are long strings of repeating chemical elements. Some fibers come from ground plants that synthesize connected units of cellulose
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HIGH TECHNOLOGY FIBRES FOR TECHNICAL TEXTILES 1 INTRODUCTION Human life is surrounded by hundreds of textile fibres either in the form of clothes‚ interior textiles or in the form of high performance technical textiles made of conventional or high technology fibres for various applications. A textile fibre is usually defined as a flexible‚ macroscopically homogenous cylindrical body mainly with circular cross- section having a high ratio of length to diameter (typically 100-3000: 1). Textile
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Fiber Optics Assignment Many modern medical materials and equipment work on a principle which is beyond the capacity of human transducers. Comment and discuss the working principles of an endoscope‚ uteroscope or a rectoscope showing the illuminating path‚ the image path‚ transmission path and the liquid transfer or operating instrument ducts‚ showing the position of suitable valves. This will therefore explain how light travels through an optical fibre and show how such
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