OF THE IEEE‚ VOL. 70‚ NO. 5‚ MAY 1982 Silicon as a Mechanical Material KURT E. PETERSEN‚ MEMBER‚ IEEE Abstract-Single-crystal silicon is being increasingly employed in a variety of new commercial products not because of its well-established electronic properties‚ but rather because of its excellent mechanical properties. In addition‚ recent trends in the engineering literature indicate a growing interest in the use of silicon as a mechanical material with the ultimate goal of developing a broad
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Mechanical Translational Systems Currently‚ there are two systems of units: One is the international system (SI) or metric system‚ the other is the British engineering system (BES) or the English system. We prefer to use the SI system in this course‚ buy may use either of them whenever necessary. Also‚ within each system‚ we define certain base units. In SI system‚ they are meter‚ kilogram‚ and second. In BES‚ they are foot‚ pound‚ and second. Almost all the other units used in mechanical system
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Task 1: (P1) Describe the purpose and application of three different types of lubricant: What is Lubrication: Lubrication is a process or technique when a component is having been made smooth and slippery by the application of Lubricant. What is Lubricant: A lubricant is a substance which applies between two moving surfaces to reduce friction between them. E.g. Motor oil‚ Greases‚ Graphite‚ Glasses. Three different types of lubricant and the purpose they serve: Glasses: Glass is used as a Lubricant
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Fitting Shop Introductions: The bench work and fitting play a important role in every engineering workshop to complete and finish the job to desired accuracy. The work carried out by hand at the bench is called bench work. Whereas fitting is the assembling of parts together by filling‚ chipping‚ sawing‚ scraping and tapping etc. Fitting shop tools: The tools which are used in fitting lab are called fitting shop tools. These can be classified into the following groups according to their function
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In 1792 James painted a portrait called‚ “A Voluptuary in the Horrors of Digestion.” A voluptuary is someone who overindulges in pleasurable things. In this painting it shows‚ a Prince sitting on a fancy chair after eating a large meal. This Prince will someday be King. In order to be a good king they must have the following things‚ he must be ambitious‚ honest‚ and good with money. For the following reasons this Prince is not ready to be King. First‚ the king must be ambitious. Being ambitious
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engineering field I have chosen is Mechanical Engineering. Mechanical engineering is a very broad field; mechanical engineers have the opportunity to work in a wide spectrum of fields. Some mechanical engineers can work for a company testing and improving upon their products. Mechanical engineers love to take things apart and to find out how they work. This being the basis for mechanical engineering it gives a mechanical engineer many options so you won’t ever be bored. Mechanical Engineers rely heavily on
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The role of salivary amylase in the digestion of starches remains controversial. In the absence of pancreatic amylase‚ the key enzyme for starch digestion‚ salivary amylase may well represent a potential compensatory alternate pathway for the digestion of amylose‚ amylopectin‚ and glycogen. Clinically significant depression of pancreatic amylase occurs in chronic pancreatitis‚ pancreatic resection‚ pancreatic neoplasm‚ cystic fibrosis‚ and other causes of pancreatic insufficiency. Quantitation
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in Shandong Province. The untimely death of my uncle‚ who was very close to me‚ because of illness and poverty shocked me to such an extent that I once decided to drop out of the school and to help support the family. But my parents did not allow me to do so. Illiterate as they were‚ they nonetheless understood that "Education is the key‚" and were anxious to put this key in my pocket‚ in spite of all their difficulties. With the growth of age‚ I now have a much clearer sense of purpose for my life
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Practical 12: Digestion in Humans Aim: To distinguish between 5 liquids to come to a conclusion from which region of the alimentary canal it was extracted from. Hypothesis In this practical‚ we have been given 5 unknown solutions hence it is not possible for us without any logical analysis to come up with a conclusion regarding the positioning along the alimentary canal. We cannot come up with a proper answer or predict results without running through the tests. I though can base my
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MECHANICAL PROPERTIES OF FLUIDS 1 Torricelli’s barometer used mercury. Pascal duplicated it using French wine of density 984 kg m-3. Determine the height of the wine column for normal atmospheric pressure. 2 A vertical off-shore structure is built to withstand a maximum stress of 109 Pa. Is the structure suitable for putting up on top of an oil well in the ocean? Take the depth of the ocean to be roughly 3 km‚ and ignore ocean currents. 3 A hydraulic automobile lift is designed to lift cars with
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