Author: Alfred Henry Allen
Publisher:
ISBN:
Category : Analytical chemistry
Languages : en
Pages : 498

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Book Description

Author: St. Louis Public Library
Publisher:
ISBN:
Category :
Languages : en
Pages : 486

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Book Description

Author: St. Louis Public Library
Publisher:
ISBN:
Category :
Languages : en
Pages : 1108

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Book Description

Author: National Agricultural Library (U.S.)
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 814

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Book Description

Author: Library of Congress
Publisher:
ISBN:
Category : Catalogs, Union
Languages : en
Pages : 762

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Book Description

Author: B.P. Tissot
Publisher: Springer Science & Business Media
ISBN: 364287813X
Category : Science
Languages : en
Pages : 715

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Book Description
Current and authoritative with many advanced concepts for petroleum geologists, geochemists, geophysicists, or engineers engaged in the search for or production of crude oil and natural gas, or interested in their habitats and the factors that control them, this book is an excellent reference. It is recommended without reservation. AAPG Bulletin.

Author: Greg I. Johnson
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 252

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Book Description

Author: Carl A. Burtis
Publisher: W B Saunders Company
ISBN: 9781455734405
Category : Medical
Languages : en
Pages : 976

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Book Description
This is a Pageburst digital textbook; the product description may vary from the print textbook. A condensed, student-friendly version of Tietz Textbook of Clinical Chemistry, this text uses a laboratory perspective to provide you with the chemistry fundamentals you need to work in a real-world, clinical lab. Accurate chemical structures are included to explain the key chemical features of relevant molecules. Offering complete, accurate coverage of key topics in the field, it's everything that you expect from the Tietz name! More than 500 illustrations and easy-to-read tables help you understand and remember key concepts. Key words, learning objectives, and other student-friendly features reinforce important material. Chapter review questions are included in an appendix to test your knowledge. A two-color design makes it easier to read and easy to find important topics. In-depth, reader-friendly content is appropriate for MT/CLS and MLT/CLT students and may also be used by laboratory practitioners, pathology residents, and others. A new chapter on newborn screening discusses the basic principles, screening recommendations, inborn errors, methods, and interpretation of results. A comprehensive glossary provides easy-to-find definitions of key terms. An Evolve website provides regular updates of content, answers to review questions, and web links to related sites for further research and study.

Author: Istvan Bogardi
Publisher: Springer Science & Business Media
ISBN: 3642760406
Category : Technology & Engineering
Languages : en
Pages : 438

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Book Description
The nitrate content of drinking water is rising at an alarming rate in several regions of NATO countries and elsewhere in the world. The increase is due to lack of proper sewage treatment, and primarily to excess fertilizer application. Also, eutrophication in several coastal areas is triggered by high nitrate concentrations. The main purpose of this book is to integrate scientific knowledge related to exposure assessment, health consequences and control of nitrate contamination in water. The motivation is related to the magnitude, the possible adverse health effects, and the high cost of control ling nitrate contamination. Future research tasks are defined by an interaction among hydro logists, toxicologists and environmental engineers in an integrated framework for nitrate risk management. The target readership of this book is a mix of university colleagues, practitioners from both the private and public sectors and advanced graduate students working with the hydrological, health science or environmental engineering aspects of nitrate contamination. The main conclusions include: 1. For risk assessment purposes, knowledge and sufficiently accurate models are available to predict nitrate load and its fate in water under changes in land use. 2. Once agricultural exposure controls are implemented, the response times in ground water may be so long as to make controls unrealistic. 3. It is still unknown whether agricultural best management practice is a compromise between nitrate risk reduction and agricultural revenue. 4. The current drinking water guidelines of 10 mg/L NOrN need not be changed.

Author: D.R. Karsa
Publisher: Springer Science & Business Media
ISBN: 0751402060
Category : Technology & Engineering
Languages : en
Pages : 278

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Book Description
The awareness and development of 'biodegradable' surfactants pre-dates current pressures by the environmental movement by nearly three decades, wherein a responsible industry mutually agreed to replace 'hard', non-biodegradable com ponents of household detergents by 'soft', biodegradable alternatives, without course to legislation. The only requirement at that time was for surfactants used in detergents to exhibit a 'primary biodegradability' in excess of 80%; this referring to the disap pearance or removal from solution of the intact surface active material as de tected by specified analytical techniques. This proved useful, as observed environmental impacts of surfactants, e.g. visible foam on rivers, are associated with the intact molecule. Test methods for 'primary biodegradability' were eventually enshrined in EU legislation for nonionic surfactants (Directive 821242/EEC, amended 73/404IEEC) and for anionic surfactants (Directive 8212431EEC, amended 73/405IEEC). No approved test methods and resultant legislation have been developed for cationic and amphoteric surfactants to date. The environmental classification of chemical substances, which of course includes surfactants, and associated risk assessment utilises a second criterion 'ready biodegradability'. This may be assessed by a number of methods which monitor oxygen uptake (BOD), carbon dioxide production or removal of dis solved organic carbon (DOC). Some surfactants which comply with the above Detergents Directive are borderline when it comes to 'ready biodegradability'.