The Iron-Carbon Diagram There are two iron-carbon equilibrium diagrams: - stable iron-graphite Fe-Gr - metastable iron-cementite Fe-Fe3C The stable condition usually takes a very long time to develop. The metastable diagram is of more interest. Fe3C iron carbide called cementite because it is hard. Following phases exist on Fe-Fe3C diagram: - liquid solution of iron and carbon (L) - ferrite ( ) – an interstitial solid solution of carbon in Fe (bcc). At room temperature ferrite is ductile but
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surroundings important. Technology is everywhere‚ giving anyone who comes within its reach access to all kinds of information. There is evidence that shows technology is more efficient to use‚ but people pay too much attention to it rather than to each other. Society has shifted to a time where talking to someone face-to-face is no longer required‚ and this shift has become a growing problem in today’s world. Technology is being improved every day‚ but the new advancements being created are causing
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Abstract: Gravimetric analysis can be used to determine the percentage of phosphorus in plant food. A precipitant of known composition is produced and weighed to find percent of phosphorus in compound. From the mass and known composition of the precipitate‚ the amount of original ion can be determined. Introduction: Gravimetric analysis is based on the measurement of mass. Gravimetric analysis involves isolation of an ion in solution by a precipitation reaction‚ filtering‚ washing the precipitate
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Does Human-Produced Carbon Dioxide Contribute to Global Warming? There are always two sides to an issue. This is especially true in Science. Each side will gather facts and statistics to help their argument. They will also fuel the argument with their opinions. Some articles are more persuasive in their reasoning then others. This persuasion can ultimately change a person’s opinion of the issue. The question to be answered is does human-produced carbon dioxide contribute significantly to
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Essay on Gobal Warming and America ’s role. America’s Carbon Footprint Joseph N. Flowers Jr. COM/172 November 12‚ 2012 Judith Scharle America’s Carbon Footprint Florida will be the next lost city of Atlantis! That can be imagined when reading statistics from scientists predicting that in fewer than 100 years‚ most of southern Florida will be under water because of global warming (Wilbur‚ 2011). Global warming is the rising of the Earth’s temperature because
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CARBON TAX ON TOURISM CARBON TAX The tax levied on the carbon content of fuels is known as the carbon tax. Carbon tax is a type of carbon pricing. Fuels like coal‚ petroleum and natural gas release carbon dioxide (CO2) when they are burnt. This tax has been introduced to reduce the greenhouse gas emissions. These taxes can be regressive tax‚ in which they may affect low income groups directly or indirectly. This regressive impact on carbon taxes can be addressed by using the tax revenues to
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How to study and discuss cases The case study is a powerful learning tool for a business major student. We may find interpreting and writing about cases mystifying‚ challenging‚ or downright frustrating. First of all‚ we should have good attitude‚ such as personal initiative‚ self-reliance‚ curiosity‚ taking risk and patience.. We should be initiative to study‚ and to have confidence in ourselves‚ but also to think independently and find the solutions. Curiosity is necessary
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Discuss how Sherriff presents human weakness and frailty in Journeys End Journeys End was written with the intention of “letting the war speak”. The lives of the officers on the front line during 1917 are examined. A key theme that is explored throughout the play is the reactions of the mind and body‚ under the stress of the war. Each character represents the weakness of the human being in an individual way‚ but the character on which frailty is mainly focussed is Stanhope. Stanhope is the topic
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involve low carbon society concept. The question is what is sustainable development and low carbon society? Sustainable development is eco-friendly development and low carbon society is society that consumes sustainable and relatively low carbon energy as compared with our present day to avoid adverse climate change. Malaysia also participates in this program in order to reduce carbon emission to avoid climate change. In this research we focus on how to transformed Iskandar Malaysia to low carbon society
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microbiology of biological phosphorus removal in activated sludge systems Robert J. Seviour à ‚ Takashi Mino‚ Motoharu Onuki Institute of Environmental Studies‚ Graduate School of Frontier Sciences‚ University of Tokyo‚ 7-3-1 Hongo‚ Bunkyo-ku‚ Tokyo 113‚ Japan Received 11 December 2002; received in revised form 18 February 2003; accepted 20 February 2003 First published online 20 March 2003 Abstract Activated sludge systems are designed and operated globally to remove phosphorus microbiologically‚
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