Xem 1-20 trên 22 kết quả Coal mining
  • On close examination, the glowing promise of coal quickly turns to ash. Coal mining remains a deadly and environmentally destructive industry. Nearly forty percent of the carbon dioxide released into the atmosphere each year comes from coal-fired power plants. In the last two decades, air pollution from coal plants has killed more than half a million Americans. In this eye-opening call to action, Goodell explains the costs and consequences of America's addiction to coal and discusses how we can kick the habit....

    pdf100p beobobeo 01-08-2012 39 10   Download

  • Tham khảo sách 'engineering geology applied to the design and operation of ungerground coal mines', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Tuyển tập những bài báo cáo nghiên cứu khoa học hay nhất được đăng trên tạp chí JOURNAL OF FOREST SCIENCE đề tài: Selected physical properties of initial soils on the outside spoil bank of the Bełchatów brown coal mine...

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  • The rapid economic growth in Vietnam has resulted in an increasing demand for electricity. This in turn translates to a higher rate of coal resource extraction and consequent rise in pollution of water and land resources. This study estimated the environmental costs associated with the electricity demand requirements of the coal electricity sector, as a component of the long-run marginal opportunity cost (LR-MOC) of electricity production.

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  • The energy demand for the endothermic gasification reaction is met by the combustion of residual char in the fast bed combustor. The circulating bed materials act as heat carrier between the two fluidized beds and maintain the required temperature in gasifier. Therefore, the hydrodynamics of such a dual fluidized beds system needs to be thoroughly understood for successful design and operation of the system for industrial application.

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  • Số nhiều của danh từ kép 1/Cấu tạo của danh từ kép ·Danh từ + danh từ Ví dụ:Balance sheet (Bảng quyết toán) Business card (Danh thiếp) Street market (Chợ trời) Winter clothes (quần áo mùa đông) Police station (Đồn công an) Notice board (Bảng thông báo) Football ground (sân đá bóng) ·Danh từ + danh động từ (gerund) Ví dụ:Weight-lifting (Cử tạ) Baby-sitting (Công việc giữ trẻ) Coal-mining (Sự khai mỏ than) Surf-riding (Môn lớt ván) Horse-trading (Sự nhạy bén sắc sảo) ·Danh động từ + danh từ ...

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  • The toxicology of particles is an absorbing area of research in which to work and when we conceived this book, we wanted to capture some of the fascination that we feel about our profession. We are well-pleased with the result—everyone we invited to write a chapter agreed and almost everyone delivered a manuscript—a remarkable outcome in this time of conflicting deadlines. It is difficult to keep up with the sheer quantity of data that accumulates on particle toxicology.

    pdf428p 951628473 07-05-2012 68 14   Download

  • Air pollution has been a major transboundary problem and a matter of global concern for decades. High concentrations of different air pollutants are particularly harmful to large cities residents, where numerous anthropogenic activities strongly influence the quality of air. Although there are many books on the subject, the one in front of you will hopefully fulfill some of the gaps in the area of air quality monitoring and modeling, and be of help to graduate students, professionals and researchers....

    pdf0p cucdai_1 19-10-2012 39 13   Download

  • Illustrated by Eminent Artists Uniform with this Edition Beric the Briton: A Story of the Roman Invasion of Britain. Bonnie Prince Charlie: A Tale of Fontenoy and Culloden. Both Sides the Border: A Tale of Hotspur and Glendower. By Conduct and Courage: A Story of the Days of Nelson. By England's Aid: The Freeing of the Netherlands. By Pike and Dyke: A Tale of the Rise of the Dutch Republic. Facing Death: A Tale of the Coal-mines. In the Heart of the Rockies: A Story of Adventure in Colorado. Maori and Settler: A Story of the New Zealand War....

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  • For most of the time, electric energy supply was based on large centralized power stations, the biggest of them located close to coal mines. Electricity distribution traditionally is done by means of high voltage power lines feeding the electricity distribution grid. With time, electric utilities became large enterprises integrating electricity generation, distribution, and customer relations. Electricity generation mainly is powered by heat engines, their efficiency being determined by the temperature difference of the work fluid.

    pdf16p congdat261 23-11-2010 44 5   Download

  • The Blacksmith Institute’s database contains almost 350 sites contaminated with mercury, putting close to 10 million people at risk from the identified sites. It is the second most prevalent pollutant in the database. The top sources of mercury pollution are artisanal gold processing, mining and ore processing, coal mining, processing and localized air pollution related to coal combustion at poorly controlled sites, and chemical manufacturing, notably for older chlor-alkali plants making chlorine. Artisanal mining of gold ores and processing using mercury is common worldwide.

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  • Resistance Thermometers General and Historical Background Resistance thermometers, which change their resistance with temperature, are based on modulating sensors described in Chapter 1 . These sensors, which are also referred to as resistance thermometers detectors and thermo-resistors, require the supply of energy to support the flow of acquired temperature information . When Sir Humphrey Davy, the English chemist who invented the Davy Safety Lamp for use in coal mining, investigated the properties of platinum in 1821, he reported the temperature dependence of its resistance....

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  • TTrade, he Senate Committee on Environment and Public Works, the House Committee on Foreign Affairs, the House Committee on Energy and Commerce, the Senate Committee on Foreign Relations, and the House Subcommittee on International Development, Finance, and Monetary Policy requested an assessment of energy and environmental technology transfer to Central Europe and the former Soviet Union. The intent was to determine how U.S. energy technology can help resolve the economic and environmental problems in the region....

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  • Spatial or territorial organization is one of effective tools for sustainable land use. Spatial organization of land use and environmental protection by functional sub-areas is performed on the basis of comprehensive and integrated research on characteristics and differentiation laws of natural components and landscapes, socio-economic factors, the present status and trend of environmental changes as well as the structures and functions of sub-areas. Uong Bi is a national center for tourism, coal mining and thermal power production.

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  • Underground mining and occupational health The U.S. Mine Safety and Health Administration (MSHA) and the National Institute for Occupa- tional Safety and Health (NIOSH) track occupa- tional injuries and disabilities, chronic illnesses, and mortality inminers in the United States. From1973 to 2006 the incidence rate of all nonfatal injuries de- creased from 1973 to 1987, then increased dramat- ically in 1988, then decreased from 1988 to 2006. Major accidents still occur.

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  • The engineer's curiosity was excited to the highest pitch. It never occurred to him to doubt whether this letter might not be a hoax. For many years he had known Simon Ford, one of the former foremen of the Aberfoyle mines, of which he, James Starr, had for twenty years, been the manager, or, as he would be termed in English coal-mines, the viewer. James Starr was a strongly-constituted man, on whom his fifty-five years weighed no more heavily than if they had been forty. He belonged to an old Edinburgh family, and was one of its most distinguished members.

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  • I have been asked how much of this tale of modern freebooters is true? In exactly which States have such episodes occurred? Have vast herds of sheep been run over battlements? Have animals been bludgeoned to death; have men been burned alive; have the criminals not only gone unpunished but been protected by the law-makers? Have sheriffs "hidden under the bed" and "handy men" bluffed the press? Have vast domains of timber lands been stolen in blocks of thousands and hundreds of thousands of acres through "dummy" entrymen? Have the federal law officers been shot to death above stolen coal min...

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  • APPENDICES CO2 CO2CRC COE CS CSLF CSM/IFP CT CTG CTL DCL DCS DDGS DKRW DOE DRB EIA EOR EPA EPAct2005 EPIC ESA ESP FEED FERC FF FGD FT GCCC GCCI GDP GE GHG GOM carbon dioxide Cooperative Research Centre for Greenhouse Gas Technologies cost of electricity carbon sequestration Carbon Sequestration Leadership Forum Colorado School of Mines/Instituit Français du Petrole cooling tower coal to gas coal to liquid direct coal to liquids distributed control systems distillers dried grains with solubles Doyle Kelly Ramm & White Energy, LLC Department of Energy demonstrated reserve base Energy Infor...

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  • MINING For thousands of years, people have mined native metals such as gold, silver, and copper, and turned them into tools, weapons, and ornaments. At some point, they discovered that heating far more abundant metal ores in a charcoal furnace separated the pure metal, and this led to the widespread use of materials like iron. Other minerals such as flint, building stone, and gemstones have also been mined since prehistory. Fuels such as coal, oil, and natural gas have been exploited more recently.

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  • ‘THE BOTTOMS’ succeeded to ‘Hell Row”. Hell Row was a block of thatched, bulging cottages that stood by the brookside on Greenhill Lane. There lived the colliers who worked in the little gin-pits two fields away. The brook ran under the alder trees, scarcely soiled by these small mines, whose coal was drawn to the surface by donkeys that plodded wearily in a circle round a gin. And all over the countryside were these same pits, some of which had been worked in the time of Charles II, the few colliers and the donkeys burrowing down like ants into...

    pdf641p subtraction1122 28-04-2013 15 4   Download

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