energy‚ are employed in the hope of preventing the impending global energy crisis (Wang‚ Chem and Huang 2010). Microbial Fuel Cells (MFCs) which capable of harvesting electricity from renewable biomass and organic wastes arise as a promising yet challenging candidate to the existing sustainable energy portfolio (Picioreanu‚ et al. 2010). II. Historical Overview of Microbial Fuel Cells The idea of extracting energy from organic matters through the catalytic reactions of microorganisms emerged
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ENHANCING ACADEMIC PERFORMANCE AND POSITIVE ATTITUDE OF STUDENTS IN MATHEMATICS WITH ALTERNATIVE ASSESSMENT By Godfred‚ Kwame Abledu - Koforidua Polytechnic godfredabledu@yahoo.com Introduction The purpose and scope of formal education have undergone various changes over the years since the time of the Castle schools. Consequently‚ assessment has also undergone a massive reform. This has led to a wider range of assessment now than there was twenty-five years ago (Gipps‚ 1994). Evidence has
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steam engines in the Industrial Revolution‚ cheap fossil fuels then became the main source of energy. However‚ faced with the notable increase demand for energy‚ fossil fuel‚ as a non-renewable resource becomes scarcer and more expensive nowadays. To solve this problem‚ the world needs to replace fossil fuels with other sources of energy which are relatively low-cost and more secure. Renewable energy is such a potential energy. This essay will give an outline of three sources of renewable energy
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Alternative Energy Sources Fossil fuels will not last forever. If the human race wishes to continue to live the way we do‚ then we have to look at alternative energy sources such as: geothermal‚ nuclear‚ solar‚ wind‚ and hydroelectric energy. Alternative energy sources are not without faults‚ but along with faults‚ there are benefits and solutions to the issues. Geothermal energy is a well-proven energy resource that can be used to provide both heat and electricity. Geothermal energy is very
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FUELS & COMBUSTION CALCULATIONS Unit 5 Prabir Basu TYPES OF FUELS FOSSIL FUELS Solid fuels (COAL) Liquid fuels (OIL) Gaseous fuels (NATURAL GAS) NUCLEAR FUELS RENEWABLE FUELS (BIOMASS) WASTE FUELS (MUNICIPAL WASTES) SOLID FUELS PROPERTIES HEATING VALUE ULTIMATE ANALYSIS PROXIMATE ANALYSIS ASH DEFORMATION POINTS Initial deformation temp. Softening temp. Hemispherical temp Fluid temp. LIQUID FUELS PROPERTIES HEATING VALUE
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CIRCUIT IDEAS FUEL RESERVE INDICATOR FOR VEHICLES D. MOHAN KUMAR ere is a simple circuit for monitoring the fuel level in vehicles. It gives an audiovisual indication when the fuel level drops alarmingly below the reserve level‚ helping you to avoid running out of petrol on the way. Nowadays vehicles come with a dash-mounted fuel gauge meter that indicates the fuel levels on an analogue display. The ‘reserve’ level is indicated by a red marking in some vehicles‚ but the needle movement through
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BURNING FUELS Fossil fuels can be used to make electricity in a power plant. They are burned to heat water into steam‚ which can push a fan-like object called a turbine. When the turbine turns around‚ magnets in it make electricity. Fossil fuels are fuels formed by natural processes such as anaerobic decomposition of buried dead organisms. The fossil fuels are coal‚ oil and natural gas. They are fuels because they release heat energy when they are burned. They are fossil fuels because they
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Alternative Tourism Introduction Due to advances in transportation and communication technology‚ an increase in disposable incomes and leisure times in Western Europe‚ North America (Choi & Sirakaya‚ 2006; Hall & Muller‚ 2005; Momsen‚ 2005; Mowfort & Munt‚ 2003; Smith‚ 2005)‚ North-East and South-East Asia‚ and the globalization of capitalism (Mowfort & Munt‚ 2003)‚ the tourism industry has grown to become the fourth largest economic sector globally‚ with 806 million tourist arrivals and international
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ALTERNATIVE MARKETING I. Introduction: TRADITIONAL MASS MEDIA faces many challenges. Although advertisers are not ready to abandon traditional media alternative forms of media and marketing arises. This alternative marketing will be discussed in this chapter. II. ALTERNATIVE MARKETING PROGRAMS In developing Alternative Marketing Programs it requires creativity and imagination. Marketers seek to identify new places where a consumer’s path intersects with a brand’s presence‚ or create a new
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Uses of fossil fuel Fossil fuels consist of coal‚ petroleum and natural gas that are found under the earth’s surface‚ formed from billions of years of compression and decomposition of dead plant and animal matter. They are the leading source of energy for the mankind and are used for various purposes like energy for transportation‚ electricity‚ manufacturing process and also used in the manufacturing process of day to day items like plastic. Main fossil fuels are. 1. Coal Coal is
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