The Caspian Sea Environment (The Handbook of Environmental Chemistry)

The systematic description of the knowledge accumulated on the physical oceanography, marine chemistry and pollution, and marine biology of the Caspian Sea forms the basics of this book. It presents the principal characteristic features of the environmental conditions of the sea and their changes in the second half of the 20th century. At present, the principal problems of the Caspian Sea are related to the interannual sea level changes and their forecast and to the estimation of the intensity of the chemical pollution of the sea and its impact upon the biota. Special attention is paid to socio-economic, legal, and political issues in the Caspian Sea region. This publication is based on numerous observational data collected by the authors of the chapters during sea expeditions, on the archive data of several Russian oceanographic institutions, as well as on the broad scientific literature mainly published in Russian editions. This book is addressed to the specialists concerned in research in various fields of physical oceanography, marine chemistry, pollution studies, and biology; solving a wide scope of problems from the regional climate to the mesoscale processes; and using a variety of methods from remote sensing of the seas to numerical and laboratory modeling.. Tải miễn phí sách này tại đây

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Fuel Oxygenates (The Handbook of Environmental Chemistry

The state of the art on fuel oxygenates, and in particular of MTBE in groundwater, is presented. Historically, oxygenates like MTBE were developed in the 1970s as octane enhancers to replace toxic additives like lead, which were phased out of gasoline. The presence of oxygenates in gasoline promotes cleaner fuel combustion within the engine, boosts fuel octane values and reduces vehicle emissions. Another relevant oxygenate is ethyl-tertiary-butyl ether (ETBE), which has increasingly replaced MTBE. Ethanol is by far the most commonly used alcohol oxygenate and bio-ethanol in particular is being increasingly used as a replacement for other fuel oxygenates. Today the discussion on the increase on corn production to produce bio-ethanol in order to reduce our dependency on oil is in the press. As a consequence corn cultivation started to increase in Europe, the US and Brazil with subsidiary plans from the governments up to 0.4 Euros/liter of biethanol produced. Other alcohols that can be used as fuel oxygenates are methanol and tertiary-butyl alcohol (TBA). TBA is, in addition, the main degradation product of MTBE and a potential impurity from the MTBE manufacturing process. This book deals mainly with the problems associated with the contamination of groundwater by MTBE and TBA, but ETBE is also considered. The book, written by recognized specialists in the field, is organized in sections covering state-of-the-art analytical methods, including specific isotopic analysis, occurrence in the environment, transport and degradation processes, treatment technologies and human health risks. It offers a unique opportunity not only for scientists who want to get more comprehensive information on this subject but also for policy makers and stakeholders that need to manage real-world environmental problems associated with fuel oxygenate contamination of our groundwater resources. .Tải miễn phí sách này tại đây

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Tự Động Hóa Quá Trình Sản Xuất Gang

Một cuốn s�ch d�nh cho c�c bạn học ng�nh tự động h�a . 

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Cyber Weapon Z – Siêu Thần Z (Nguyên tác: Tư Đồ Kiếm Kiều – 4 chapter)

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Giáo trình nguyên lý động cơ đốt trong

Đại cương về động cơ đốt trong. Chu trình lý tưởng của động cơ đốt trong. Nhiên liệu và môi chất công tác. Các chỉ tiêu về tính năng kinh tế kỹ thuật của động cơ đốt trong. Chu trình làm việc. Những thông số đặc trưng cho chu trình làm việc của động cơ đốt trong. Thay đổi môi chất trong động cơ hai kỳ. Tăng áp cho động cơ. Cung cấp nhiên liệu trong động cơ xăng. Cung cấp nhiên liệu và hình thành hòa khí trong động cơ điêden. Tự động điều khiển tốc độ động cơ. Tải miễn phí sách này tại đây

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