Arsenic in Drinking Water

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Author :
Publisher : National Academies Press
ISBN 13 : 0309170435
Total Pages : 241 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Arsenic in Drinking Water by : National Research Council

Download or read book Arsenic in Drinking Water written by National Research Council and published by National Academies Press. This book was released on 2001-11-26 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Having safe drinking water is important to all Americans. The Environmental Protection Agency's decision in the summer of 2001 to delay implementing a new, more stringent standard for the maximum allowable level for arsenic in drinking water generated a great deal of criticism and controversy. Ultimately at issue were newer data on arsenic beyond those that had been examined in a 1999 National Research Council report. EPA asked the National Research Council for an evaluation of the new data available. The committee's analyses and conclusions are presented in Arsenic in Drinking Water: 2001 Update. New epidemiological studies are critically evaluated, as are new experimental data that provide information on how and at what level arsenic in drinking water can lead to cancer. The report's findings are consistent with those of the 1999 report that found high risks of cancer at the previous federal standard of 50 parts per billion. In fact, the new report concludes that men and women who consume water containing 3 parts per billion of arsenic daily have about a 1 in 1,000 increased risk of developing bladder or lung cancer during their lifetime.

Total Diet Studies

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Author :
Publisher : Springer
ISBN 13 : 9781493939091
Total Pages : 0 pages
Book Rating : 4.9/5 (39 download)

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Book Synopsis Total Diet Studies by : Gerald G. Moy

Download or read book Total Diet Studies written by Gerald G. Moy and published by Springer. This book was released on 2016-08-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unless a food is grossly contaminated, consumers are unable to detect through sight or smell the presence of low levels of toxic chemicals in their foods. Furthermore, the toxic effects of exposure to low levels of chemicals are often manifested slowly, sometimes for decades, as in the case of cancer or organ failure. As a result, safeguarding food from such hazards requires the constant monitoring of the food supply using sophisticated laboratory analysis. While the food industry bears the primary responsibility for assuring the safety of its products, the overall protection of people’s diets from chemical hazards must be considered one of the most important public health functions of any government. Unfortunately, many countries do not have sufficient capability and capacity to monitor the exposure of their populations to many potentially toxic chemicals that could be present in food and drinking water. Without such monitoring, public health authorities in many countries are not able to identify and respond to problems posed by toxic chemicals, which may harm their population and undermine consumer confidence in the safety of the food supply. From a trade perspective, those countries that cannot demonstrate that the food they produce is free of potentially hazardous chemicals will be greatly disadvantaged or even subject to sanctions in the international marketplace. The goal of a total diet study (TDS) is to provide basic information on the levels and trends of exposure to chemicals in foods as consumed by the population. In other words, foods are processed and prepared as typical for a country before they are analyzed in order to better represent actual dietary intakes. Total diet studies have been used to assess the safe use of agricultural chemicals (e.g., pesticides, antibiotics), food additives (e.g., preservatives, sweetening agents), environmental contaminants (e.g., lead, mercury, arsenic, cadmium, PCBs, dioxins), processing contaminants (e.g., acrylamide, polycyclic aromatic hydrocarbons, chloropropanols), and natural contaminants (e.g., aflatoxin, patulin, other mycotoxins) by determining whether dietary exposure to these chemicals are within acceptable limits. Total diet studies can also be applied to certain nutrients where the goal is to assure intakes are not only below safe upper limits, but also above levels deemed necessary to maintain good health. International and national organizations, such as the World Health Organization, the European Food Safety Agency and the US Food and Drug Administration recognize the TDS approach as one of the most cost-effective means of protecting consumers from chemicals in food, for providing essential information for managing food safety, including food standards, and for setting priorities for further investment and study. Total Diet Studies introduces the TDS concept to a wider audience and presents the various steps in the planning and implementation of a TDS. It illustrates how TDSs are being used to protect public health from chemicals in the food supply in many developed and developing countries. The book also examines some of the applications of TDSs to specific chemicals, including contaminants and nutrients.

Physiology of Mollusca

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Publisher : Academic Press
ISBN 13 : 148327585X
Total Pages : 660 pages
Book Rating : 4.4/5 (832 download)

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Book Synopsis Physiology of Mollusca by : Karl M. Wilbur

Download or read book Physiology of Mollusca written by Karl M. Wilbur and published by Academic Press. This book was released on 2013-10-22 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physiology of Mollusca, Volume II focuses on the physiology of mollusks, as well as feeding, digestion, mechanics of the heart, metabolism, and pigmentation. The selection first offers information on feeding and digestion, including Amphineura, Gastropoda, Bivalvia, anatomy of the gut, movement of food, and digestive diverticula. The text then elaborates on feeding and digestion in cephalopods and heart, circulation, and blood cells. Discussions focus on food and feeding, mechanics of heart and circulation, control of the heart, cardioregulatory substances, and blood cells. The publication considers respiration, molluscan hemoglobin and myoglobin, and molluscan hemocyanins. The text then examines the pigmentation of mollusks, carbohydrate and nitrogen metabolism, physiology of the nervous system, and sense organs. Topics include indole pigments, sugar and polysaccharides, metabolism of nitrogenous compounds, terminal products of nitrogen metabolism in mollusks, and synaptic transmission. The selection is a dependable reference for readers interested in the physiology of mollusks.

AMERICAN OYSTER CRASSOSTREA VIRGINICA GMELIN

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Publisher :
ISBN 13 : 9781033386187
Total Pages : 0 pages
Book Rating : 4.3/5 (861 download)

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Book Synopsis AMERICAN OYSTER CRASSOSTREA VIRGINICA GMELIN by : PAUL S. GALTSOFF

Download or read book AMERICAN OYSTER CRASSOSTREA VIRGINICA GMELIN written by PAUL S. GALTSOFF and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Aperçu de l'industrie canadienne des traitements de surface

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Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (933 download)

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Book Synopsis Aperçu de l'industrie canadienne des traitements de surface by : Canada. Conservation et la protection. Division des industries chimiques

Download or read book Aperçu de l'industrie canadienne des traitements de surface written by Canada. Conservation et la protection. Division des industries chimiques and published by . This book was released on 1987 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les procédés de traitement de surface produisent des eaux usées chargées de polluants potentiellement toxiques comme des métaux et des solvants organiques ainsi que des acides qui, s'ils sont rejetés dans les réseaux d'égouts municipaux, peuvent corroder les canalisations et endommager les installations électriques. Le présent rapport expose les résultats d'une enquête nationale, réalisée en 1983-1984, sur les procédés de traitement de surface; la production et le traitement des déchets solides, liquides et gazeux; et les règlements et l'application des règlements aux paliers fédéral, provincial et municipal. Le principal objectif était d'identifier les problèmes environnementaux potentiels et de recommander des mesures préventives ou correctives.

Aerospace power in the twenty-first century a basic primer

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Publisher : DIANE Publishing
ISBN 13 : 1428990291
Total Pages : 351 pages
Book Rating : 4.4/5 (289 download)

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Book Synopsis Aerospace power in the twenty-first century a basic primer by : Clayton K. S. Chun

Download or read book Aerospace power in the twenty-first century a basic primer written by Clayton K. S. Chun and published by DIANE Publishing. This book was released on 2001 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dr. Chun's Aerospace Power in the Twenty-First Century: A Basic Primer is a great start towards understanding the importance of aerospace power and its ability to conduct modern warfare. Aerospace power is continually changing because of new technology, threats, and air and space theories. However, many basic principles about aerospace power have stood the test of time and warfare. This book provides the reader with many of these time-tested ideas for consideration and reflection. Although Aerospace Power in the Twenty-First Century was written for future officers, individuals desiring a broad overview of aerospace power are invited to read, share, and discuss many of the ideas and thoughts presented here. Officers from other services will find that this introduction to air and space forces will give them a good grasp of aerospace power. More experienced aerospace leaders can use this book to revisit many of the issues that have affected air and space forces in the past and that might affect them in the future. Air Force officers will discover that Aerospace Power in the Twenty-First Century is a very timely and reflective resource for their professional libraries.

Aperçu de l'industrie canadienne des traitements de surface : état de l'industrie et mesures de lutte contre la pollution

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Publisher :
ISBN 13 : 9780662946977
Total Pages : 117 pages
Book Rating : 4.9/5 (469 download)

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Book Synopsis Aperçu de l'industrie canadienne des traitements de surface : état de l'industrie et mesures de lutte contre la pollution by : Canada. Direction générale de la protection de l'environnement

Download or read book Aperçu de l'industrie canadienne des traitements de surface : état de l'industrie et mesures de lutte contre la pollution written by Canada. Direction générale de la protection de l'environnement and published by . This book was released on 1987 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: