Xem 1-20 trên 24 kết quả Natural gases
  • Scientists predict the earth is facing 40-to-60 years of climate change, even if emissions of carbon dioxide and other global warming gases stopped today. One inevitable consequence of the greenhouse gases already in the atmosphere will be an increase in the frequency and severity of natural disaster events. Global Warming, Natural Hazards, and Emergency Management documents the imperative need for communities to prepare for the coming effects of climate change and provides a series of in-depth, road-tested recommendations on how to reduce risks for communities and businesses.

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  • In this important new book and presents the quintessential guide for gas engineers, emphasizing the practical aspects of natural gas production. Readers will learn to incorporate cutting-edge research in estimating reserves, evaluating the performance of fractured wells, processing gas, and material balance analysis; learn to evaluate future performance of gas reservoirs; learn to improve the performance of gas wells; and more.

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  • The atomic theory of matter asserts that material bodies are made up of small particles. This theory was founded in ancient times by Democritus and expressed in poetic form by Lucretius. This view was challenged by the opposite theory, according to which matter is a continuous expanse.

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  • The contributions in this book present an overview of utting edge research on natural gas which is a vital component of world’s supply of energy. Natural gas is combustible mixture of hydrocarbon gases, primarily methane but also heavier gaseous hydrocarbons such as ethane, propane and butane. Unlike other fossil fuels, natural gas is clean burning and emits lower levels of potentially harmful by-products into the air. Therefore, it is considered as one of the cleanest, safest, and most useful of all energy sources applied in variety of residential, commercial and industrial fields....

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  • Turboexpanders and Process Applications offers readers complete application criteria, functional parameters, and selection guidelines. This book is intended for the widest possible spectrum of engineering functions, including technical support, maintenance, operating, and managerial personnel in process plants, refineries, air liquefaction, natural gas separation, geothermal mining, and design contracting.

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  • Geochemical Investigations in Earth and Space Science: A Tribute to Isaac R. Kaplan is the written product of a technical session organized for the 2002 Geological Society of America in recognition of Isaac (Ian) Kaplan’s many contributions to various fields of geochemistry. This volume is a collection of 29 papers written by former students, post-doctoral researchers, friends and colleagues from countries all over the world (including Sweden, Japan, Taiwan, New Zealand, Australia, Israel and the United States)....

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  • Replacing agricultural land for energy crop plantations, as the former lack proper structure (becauseoffollowingmonoagriculturalpattern)cannotbejustifiedbyanypossibleterms.The biodiversitythatenergycropssupportcanhaveapositiveimpactononetypeofspecieswhere acompletelyharmfulimpactonanother. Plantingnonindigenouscrops for thesake for increasingproductionandprofitmayharm the localbiodiversityevenfurther.Oftennonindigenouscropsdestroythenatural landscapeand may lead to fragmentationof theecologicaldiversity.

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  • Greenhouse gases are accumulating in Earth’s atmosphere as a result of human activities, causing surface air temperatures and subsurface ocean temperatures to rise. Temperatures are, in fact, rising. The changes observed over the last several decades are likely mostly due to human activities, but we cannot rule out that some significant part of these changes is also a reflection of natural variability. Human-induced warming and associated sea level rises are expected to continue through the 21st century.

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  • This lecture introduces you to atmosphere, climate, ozone. The main contents of this chapter include all of the following: Layers of the atmosphere, composition of the troposphere, structure & temp of atmosphere, global warming, build up of greenhouse gases, nitrous oxides,...and other contents.

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  • A sustainable energy future may, according to some, include nuclear power as a gap filler in the transition from nonsustainable fossil fuel to renewable energy, even though the needed uranium is not itself renewable. The most prominent argument of advocates for nuclear power is that it does not release greenhouse gases. Chapter 13 provides knowledge of nuclear power, nuclear waste, renewable energy and conserve energy.

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  • Definition “The earth is a natural greenhouse and is kept warm by water vapors, carbon dioxide (CO2), and other gases in the atmosphere, which absorb the sun’s energy and radiate it back toward the earth. This type of warming is called ‘natural greenhouse effect’. ‘Enhanced greenhouse effect’, on the other hand, causes global warming due to excessive levels of CO2 in the atmosphere.” Facts Average temperatures have climbed 1.4 degrees Fahrenheit (0.

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  • The municipal and industrial activities of the man affects human health, leads to degradation of the environment and even degradation of the objects built by himself or his predecessors. The pollutants are emitted to the atmosphere with off-gases from industry, power stations, residential heating systems and vehicles, some additional emissions come from the natural sources as volcanoes as well. Fossil fuels, which include coal, natural gas, petroleum, shale oil and bitumen are the main source of heat, electrical energy and are the basic duels for the engines of the transport vehicles....

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  • Road traffic is one of the major consumers of energy, particularly in western industrialized countries, and globally it exhibits the highest growth rate in energy consumption of all sectors. In the Organisation for Economic Cooperation and Development (OECD) countries, more than 33% of the total final energy consumption goes into the transportation sector, amounting to more than 11% of the world’s total primary energy consumed.

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  • Gaseous fuels are generally easier to handle and burn than are liquid or solid fuels. Gaseous fossil fuels include natural gas (primarily methane and ethane) and liquefied petroleum gases (LPG; primarily propane and butane). Gaseous man-made or artificial fuels are mostly derived from liquid or solid fossil fuels. Liquid fossil fuels have evolved from animal remains through

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  • CHAPTER 4 6 GASEOUS FUELS Richard J. Reed North American Manufacturing Company Cleveland, Ohio 46.1 46.2 INTRODUCTION NATURAL GAS 46.2.1 Uses and Distribution 46.2.2 Environmental Impact 46.2.3 Sources, Supply, and Storage 46.2.4 Types and Composition 46.2.5 Properties 46.2.6 Calorific Value or Heating Value 1505 1505 1505 1505 1507 1507 1507 46.3 1507 46.2.7 46.2.8 46.2.9 46.2.10 46.2.11 46.2.12 Net Heating Value Flame Stability Gas Gravity Wobbe Index Flame Temperature Minimum Ignition Temperature 46.2.

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  • Human beings need to breathe oxygen diluted in certain quantity of inert gas for living. In the atmosphere, there is a gas mixture of, mainly, oxygen and nitrogen, in appropriate proportions. However, the air also contains other gases, vapours and aerosols that humans incorporate when breathing and whose composition and concentration vary spatially. Some of these are physiologically inert. Air pollution has become a problem of major concern in the last few decades as it has caused negative effects on human health, nature and properties....

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  • Soil is a biogeochemically dynamic natural resource that supports all critical components that comprise terrestrial ecosystems. It has been called Earth’s living skin. On its June 11, 2004, cover, Science declared soils to be “the final frontier.” The growing awareness that soil provides a variety of ecosystem services beyond food production has attracted interest in soil from nonsoil scientists.

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  • Secondary aerosol is produced by the oxidation of primary gases (sulphur dioxide, SO2, nitrogen oxides, NOx, and volatile organic compounds, VOCs,) to sulphuric and nitric acid, and organic vapours, followed by their gas-particle conversion [26, 77]. Finally, some of these acidic gases can be neutralised by reaction with ammonia gas or calcium carbonate (calcite) forming secondary aerosol (ammonium sulphate, ammonium nitrate, calcium sulphate, calcium nitrate).

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  • The atmosphere is a mixture of several gases surrounding the earth's crust and has a layer that protects and preserves the lives of human beings and keeping the materials in good condition and functionality. Once damaged, by pollutants emitted from anthropogenic and natural sources, the atmosphere reduces the levels of protection due to formation of the ozone layer. The presence of contaminants in indoors and outdoors influenced by climatic factors, has a negative effect on human health and the durability of materials. Indoor air quality is a reflection of the outside air....

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  • Near-Surface Geochemistry – Near-surface geochemistry methods can be used to detect shortterm rapid loss or long-term intermittent leakage of CO2 from GS formations. These techniques are routinely employed in the environmental consulting industry and include monitoring soil gas and shallow groundwater. In general, both consist of purging the monitoring point and collecting a sample, followed by analysis and interpretation. Soil gas can be collected with sorbents, sample tubes, or Tedlar bags, depending on the compounds expected and the detection level.

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