Duyệt
Những tài liệu tải lên gần đây
Đang hiển thị 1 - 5 của tổng số 262 kết quả
- Soil Microbiology(John Wiley & Sons, Inc, 2021) Robert L. TateSoil microbes have been studied as interesting life forms. They also have been exploited as producers of substances of great societal importance, ranging from food and fiber to a variety of antibiotics. Agricultural-based research as well as basic research have provided a meaningful demand for monetary support. Today, environmental scientists, regulators, and the lay public are faced with the added demand for answers to microbiological concerns far beyond these basic science and agricultural needs. Examples of the extended informational voids include management of reclamation sites and the reparation of damaged soil systems, be they mismanaged or chemically contaminated. As recently as the time of publication of the first edition of Soil Microbiology, justification for the primary interest in soil microbiology involved optimization of agricultural production or simply providing a vehicle for study of essential biochemical processes (e.g. DNA, RNA, and other basic biochemical concerns.). Indeed, not only is an appreciation of the biological processes occurring in soil essential to achieve societal goals of caring for terrestrial ecosystems but true wisdom in decision making is predicated on an understanding of how the individual soil biologically based processes combine to produce a vital, sustainable whole. The parts assembled into a viable soil system clearly produce a whole much more dynamic, much greater than can be predicted by their simple summation.
- Soil Chemistry(John Wiley & Sons Ltd, 2020) Daniel G. StrawnThis new edition of Soil Chemistry contains more examples, more illustrations, more details of calculations, and reorganized material within the chapters, including nearly 100 new equations and 51 new figures. Our goal remains to provide an introductory text for senior‐level soil chemistry students. This requires compromise on depth of explanation of the topics so that the main points are not lost on students, while providing sufficient information for explanation. We strive to achieve this balance throughout. Students wanting more details can review the more than 200 references provided in figure and table captions and at the end of the chapters. Additional details can also be found in textbooks in chemistry, geology, pedology, geochemistry, colloid science, soil chemistry, and soil fertility. The textbook’s focus is on species and reaction processes of chemicals in soils, with applications to environmental and agricultural issues. Topics in the 13 chapters range from discussion of fundamental chemical processes to review of properties and reactions of chemicals in the environment.
- Soil and Water Chemistry: An Intergrative Approach(CRC Press, 2015) Michael E. EssingtonSoil and Water Chemistry: An Integrative Approach was written to meet the needs of undergraduate and first-year master’s students in soil and environmental chemistry courses. The book may also serve as a reference for professionals in the soil sciences and allied disciplines. The discipline of soil chemistry, or its contemporary counterpart, environmental soil chemistry, examines the chemical and mineralogical characteristics of the soil environment and the chemical processes that distribute matter between the soil solid, solution, and gaseous phases. Essentially, a soil chemistry course and this book offer a basic understanding of the complexity of the natural system that occupies an exceedingly thin layer of the Earth’s surface. Traditionally, the application of chemical principles to the study of soils has been limited to agronomic systems, and primarily to the behavior of agrichemicals. However, it is well established that as a discipline soil chemistry is not limited to describing the processes that control the availability of nutrients to plants. Indeed, the chemical properties and processes that control the behavior of nutrients and pesticides in soils are the same as those that operate on a vast array of inorganic and organic substances that are outside the purview of production agriculture.
- Smokeless Tobacco and Some Tobacco-specific N-Nitrosamines(WHO Press, 2007) International Agency for Research on CancerIn 1969, the International Agency for Research on Cancer (IARC) initiated a programme on the evaluation of the carcinogenic risk of chemicals to humans involving the production of critically evaluated monographs on individual chemicals. The programme was subsequently expanded to include evaluations of carcinogenic risks associated with exposures to complex mixtures, life-style factors and biological and physical agents, as well as those in specific occupations. The objective of the programme is to elaborate and publish in the form of monographs critical reviews of data on carcinogenicity for agents to which humans are known to be exposed and on specific exposure situations; to evaluate these data in terms of human risk with the help of international working groups of experts in chemical carcinogenesis and related fields; and to indicate where additional research efforts are needed. The lists of IARC evaluations are regularly updated and are available on the Internet at http://monographs.iarc.fr/. This programme has been supported by Cooperative Agreement 5 UO1 CA33193 awarded since 1982 by the United States National Cancer Institute, Department of Health and Human Services. Additional support has been provided since 1986 by the European Commission, Directorate-General EMPL (Employment, and Social Affairs), Health, Safety and Hygiene at Work Unit, and since 1992 by the United States National Institute of Environmental Health Sciences.
- The Scientific Basis of Tobacco Product Regulation: report of a WHO study group(WHO Press, 2007)This report presents the conclusions reached and recommendations made by the members of the Study Group at its third meeting, during which it reviewed four background papers specially commissioned for the meeting and which dealt, respectively, with the following four themes. 1. The contents and design features of tobacco products: their relationship to dependence potential and consumer appeal. 2. Candy-flavoured tobacco products: research needs and regulatory recommendations. 3. Biomarkers of tobacco exposure and of tobacco smoke-induced health effects. 4. Setting maximum limits for toxic constituents in cigarette smoke.
