Although Helium exists in the atmosphere of Earth in small quantities‚ it is one of the most common element in the universe. It is a rare gas on earth. Helium was first discovered by Pierre Janssen in the spectrum of the sun during an eclipse in 1868. It was shortly identified as an element and was named by the chemist Sir Edward Frankland and the British astronomer Sir Joseph Norman Lockyer. Helium has an atomic number of 2 and an atomic weight of 4.002602. Helium is represented by the symbol
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Exhaust Gas Recirculation 1. INTRODUCTION All internal combustion engines generate power by creating explosions using fuel and air. These explosions occur inside the engine’s cylinders and push the pistons down‚ which turns the crankshaft. Some of the power thus produced is used to prepare the cylinders for the next explosion by forcing the exhaust gases out of the cylinder‚ drawing in air (or fuel-air mixture in non-diesel engines)‚ and compressing the air or fuel-air mixture before the fuel is
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Science Vol. 6‚ No. 9; September 2010 On a Personal Experience of Cultural Adaptation ---From the Perspective of Microculture Lisha Liu Qindao College‚ Qingdao Techonological University 79 Tie Qi Shan Street‚ Chengyang‚ Qingdao 266106‚ China E-mail: olivia_lisha@126.com Abstract This paper‚ from the perspective of microculture‚ mainly explores how the cultural anthropological theory “cultural adaptation” works on a personal experience of a student who pursues her further study inter-regionally
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Background In Bangladesh‚ natural gas is one of the important sources of energy that accounts 75% of commercial energy of the country. Again‚ Bangladesh is important to world energy markets because of its large potential natural gas reserves. This resource really reduces importing fuel from other countries and saving large number of foreign currencies. All power‚ fertilizer and today the transport sector of Bangladesh are by no means dependent on Natural Gas. From the beginning of this century
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taking. Finally‚ in 2006‚ he sees signs of growth‚ but wonders whether it is sustainable. General electric: Headquarters Fairfield‚ Connecticut‚ U.S. Revenue: US$ 182.515 billion (2008) Net income: US$ 17.410 billion (2008) Total assets: US$ 797.769 billion (2008) Employees: 323‚000 (2008) CEO & Chairman – Jeffrey R. Immelt Lines of business: Aviation‚ Jet engines‚ Electricity‚ Entertainment‚ Finance‚ Gas turbines‚ Generation‚ Industrial Automation‚ Lighting‚ Medical imaging equipment‚ Medical technology
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Fracking for Natural Gas In today’s global fight for the growing demand of energy and promotion of saving energy‚ fracking has become very controversial. The dangers to our society and health are at the forefront in conducting safer practices. To obtain the natural gas‚ fracking or hydraulic fracking must be conducted. Hoffman (2015) explained‚ “Hydrofracking is a controversial oil and gas extraction technique developed in the late 1940s to gain access to fossil energy deposits previously inaccessible
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What is the temperature at the end of the process in (a)? (d) What is the pressure at the end of process in (b)? (e) Show both processes in the p-V plane. Problem 2: The temperature of an ideal gas at an initial pressure p1 and volume V1 is increased at constant volume until the pressure is doubled. The gas is then expanded isothermally until the pressure drops to its original value‚ where it is compressed at constant pressure until the volume returns to its initial value. (a) Sketch these processes
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into the gas that fuels our economy. That is what keeps the gas prices high. When gas supplies are short‚ due to an “inability to refine crude oil into gas efficiently‚” prices increase. This is a component of supply and demand economics. In a positive aspect‚ rising gasoline prices do serve a purpose; they curtail usage so that we do not eventually run out of fuel. If gasoline continued to retain its cheap price‚ despite how much was available‚ people may pull up to their favorite gas station
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In the film Romeo+Juliet (1996)‚ Luhrmann puts a new‚ fresh spin on Shakespeare’s classic play‚ Romeo and Juliet. While staying somewhat true to the original play‚ he shapes the dialogue‚ acting‚ and setting to bring the star crossed lovers into the present. This makes it more appealing and approachable to a modern audience. One might argue that the mixture of modern scenery and accents and Shakespearean English is an unsatisfying hybrid‚ and that a remake should either edit the language so it
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Gas Price Elasticity The Energy Information Administration of the Department of Energy began tracking weekly gasoline prices in 1990 by means of a survey of 800 service stations around the country. The average retail price for unleaded gasoline posted its fourth record high during the week of June 12‚ 2000‚ increasing 5 cents a gallon to an average of $1.681. The price at the pump is higher than the same period last year by 56 cents and has risen 16.2 cents over the past month (Anonymous‚ 2000)
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