INTRODUCTION Since carbon dioxide concentration in the atmosphere is accumulating rapidly because of burning fossil fuel‚ coal‚ oil and natural gas for power generation‚ transportation‚ industrial and domestic uses‚ our earth has been facing global warming‚ sea level rising‚ flooding and other adverse changes which damage to our ecosystem. To address this challenge‚ we need to find out other alternative ways that do not produce carbon dioxide or that reduce the release of enormous amount of carbon dioxide gases
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Composites Science and Technology 61 (2001) 1899–1912 www.elsevier.com/locate/compscitech Advances in the science and technology of carbon nanotubes and their composites: a review Erik T. Thostensona‚ Zhifeng Renb‚ Tsu-Wei Choua‚* a Department of Mechanical Engineering and Center for Composite Materials‚ University of Delaware‚ Newark‚ DE 19716‚ USA b Department of Physics‚ Boston College‚ Chestnut Hill‚ MA 02167‚ USA Received 1 May 2001; received in revised form 19 June 2001; accepted 21
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Carbon Nanotubes Abstract Carbon nanotubes (CNTs) are a recently discovered allotrope of carbon. They take the form of cylindrical carbon molecules and have novel properties that make them potentially useful in a wide variety of applications in nanotechnology‚ electronics‚ optics‚ and other fields of materials science. They exhibit extraordinary strength and unique electrical properties‚ and are efficient conductors of heat. Inorganic nanotubes have also been synthesized. A nanotube is a member
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http://www.ucar.edu/communications/gcip/m2ccycle/m2pdf.pdf The Carbon Cycle Importance of Carbon Cycle Carbon (C) is the fourth most abundant element in the universe and is found in all living substances as well as in many inorganic materials and is also the key element for life. The carbon cycle is the exchange of carbon among three reservoirs or storage places: the land‚ the oceans‚ and the atmosphere The atmosphere has the least amount of carbon‚ followed by the land with it plants and animals‚ also
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Chemistry Pg. 1 Carbon Dating Carbon dating is the most reliable‚ commonly used‚ and useful dating method‚ for what it can date. It is used to date late Pleistocene and Holocene artifacts and geologic events up to 50‚000 years decayed. Carbon dating has been very beneficial to the scientific world‚ because it is used in so many different fields of science‚ including archaeology‚ geology‚ oceanography‚ hydrology‚ atmospheric science‚ and paleoclimatology. The radiocarbon dating method was developed
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Carbon steel is steel in which the main interstitial alloying constituent is carbon in the range of 0.12–2.0%. The American Iron and Steel Institute(AISI) defines carbon steel as the following: "Steel is considered to be carbon steel when no minimum content is specified or required for chromium‚cobalt‚ molybdenum‚ nickel‚ niobium‚ titanium‚ tungsten‚ vanadium or zirconium‚ or any other element to be added to obtain a desired alloying effect; when the specified minimum for copper does not exceed 0
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important‚ this being carbon. There are many interesting things about carbon including‚ facts about it‚ its history‚ and what it is used for. Carbon is a very important element‚ in fact‚ life could not exist without it. Carbon (C on the periodic table) is a chemical element and is the sixth most abundant element in the world. Carbon is the 6th element on the periodic table in group 14‚ period 6‚ it has six protons‚ six electrons‚ and six neutrons‚ with an atomic mass of 12.01u. Carbon has a boiling point
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Carbon Footprint briefly defined is the amount of CO2 left behind after any human activity. They can be classified into primary and secondary footprints. [ (McLean 2008) ] Primarily‚ it is the direct emission of CO2 from burning fossil fuels or any kind of fuels. They are considered the main and biggest source of CO2 emission‚ thus the having biggest Carbon Footprints. [ (McLean 2008) ] The CO2 emissions from all products and their life-cycles are considered as secondary footprints. The life-cycle
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fuels‚ substandard emission techniques‚ and an ever growing population all play an intricate role of raising Earth’s overall temperature. Each can be linked through one key adversary‚ carbon dioxide. Rising CO2 levels are almost the sole reason temperatures are rising at such an alarming rate. Aside from water vapor‚ carbon dioxide is a chief ingredient in our Greenhouse Effect stew. It’s everywhere. It emits from our cars‚ it flies from our smokestacks‚ and it empties from our lungs. All of Earth is
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"A carbon fiber is a long‚ thin strand of material about 0.005-0.010 mm in diameter and composed mostly of carbon atoms. The carbon atoms are bonded together in microscopic crystals that are more or less aligned parallel to the long axis of the fiber. The crystal alignment makes the fiber incredibly strong for its size. Several thousand carbon fibers are twisted together to form a yarn‚ which may be used by itself or woven into a fabric. The yarn or fabric is combined with epoxy and wound or molded
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