Download or read book Nitrates and Nitrites in Food and Water written by Michael J Hill and published by CRC Press. This book was released on 1996-07-01 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the Introduction With regard to nitrate and nitrite, the perceived hazards are to the ecological balance in rivers and lakes, and to human health. Increased nitrate levels in river water lead to increased growth of algae and consequent decrease in the level of biologically available oxygen (BAO). In extreme forms, the algae form unsightly blooms on the water surface, and the BAO level falls below that necessary to support fish and other animal life. At this extreme, there is little dispute that efforts should be made to restore the ecological balance, and this is best achieved by reversing the increase in nitrate concentration that caused the problem. The health hazards are less clear, but include the risk of methaemoglobinaemia in young infants and the possible risk of gastric cancer, particularly in certain high-risk patient groups. These health risks have led to legislation to control the exposure of humans to nitrate from drinking water and as a food additive . . . What can be done about this and how can the problem be solved (if, indeed, there is a problem)? It is normal practice to add nitrate and nitrite to food as a cosmetic and as a preservative. Is this necessary? If so, how much do we need to add? Are there alternatives? What effect does added nitrate have on total nitrate exposure of humans? . . . In this book, we have attempted to answer, or at least to give the background to, some of the questions. . . .
Download or read book Nitrate Handbook written by Christos Tsadilas and published by CRC Press. This book was released on 2022-01-03 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrate Handbook: Environmental, Agricultural, and Health Effects provides an overview of the entire nitrate cycle and the processes influencing nitrate transformation. It clearly identifies the role of nitrate as an essential nutrient in plant growth, food preservation, and human health. Using the most up-to-date knowledge and research, this handbook illustrates how the steadily increasing human population and demand for food, which results in higher amounts of nitrate needed by soils, makes new regulations on the management and usage of nitrates a high priority. A detailed explanation concerning the discrepancies between the public’s perception of nitrate’s harm versus the reality of its human health benefits is given via a balanced and evidence-based approach. All questions pertaining to the influences of nitrate and its derivatives on plant physiology and human health are explored in depth. This comprehensive resource with contributions from distinguished researches in the field is a must-have for professionals and students who study and work with nitrates. Features: Includes in depth discussion on the wide spectrum of nitrate present in the environment. Focuses on the progress made on nitrate research and its importance. Answers all questions about nitrate and its derivatives’ influences on plant physiology and human health. Enables decision makers and public authorities to manage social concerns Compiles in one resource the findings of many distinguished researchers in the field.
Download or read book Nitrates and Nitrites in Foodstuffs written by Council of Europe and published by Council of Europe. This book was released on 1993-01-01 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: On cover: Health protection of consumers
Download or read book Nitrite and Nitrate in Human Health and Disease written by AnnMarie Kocher and published by Springer Science & Business Media. This book was released on 2011-04-15 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrite and Nitrate in Human Health and Disease delivers a comprehensive review of nitrite and nitrate biology, from basic biochemistry to the complex physiology and metabolism of these two naturally occurring molecules in the human body. Well-organized and well referenced chapters cover the rich history of nitrite and nitrate, sources of exposure, and the physiological effects when consumed through foods containing nitrite and nitrate. The chapters are written by leading experts, all of whom share their research and perspectives in order to help define the context for benefits vs. any potential risks associated with nitrite and nitrate use, either through dietary ingestion or therapeutic dosing. This diverse collection of authors includes vascular biologists, physiologists, physicians, epidemiologists, cancer biologists, registered dieticians, chemists, and public health experts from five countries in both academia and government. Nitrite and Nitrate in Human Health and Disease provides a balanced view of nitric oxide biochemistry, and nitrite and nitrate biochemistry in physiology and in the food sciences.
Download or read book Nitrate Won t Wait written by Anthony Slide and published by McFarland. This book was released on 2013-05-03 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study looks at the preservation process: newsreel, television, and color preservation; the often controversial issue of colorization; and commercial film archives. It provides detailed histories of the major players in the preservation battle including the International Museum of Photography at George Eastman House, the American Film Institute, the Museum of Modern Art, the UCLA Film and Television Archive, and the Library of Congress. This first historical overview of film preservation in the United States is also highly controversial in its exposure and criticism of the politicization of film preservation in recent years, and the rising bureaucracy which has often lost sight of preservation and restoration as the ultimate purpose of film archives.
Download or read book Organic Nitrates written by P. Needleman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitroglycerin and other organic nitrates have been used for over a century in the treatment of angina pectoris. Millions of patients, throughout the world, have placed nitroglycerin tablets under the tongue and have experienced rapid and dramatic relief from the chest pain that frequently occurs as a manifestation of disease of the coronary arteries. The empirical observation of the safe use of nitrates for tile alleviation of the symptoms of angina have led to their widespread medical acceptance. The use of organic nitrates preceded any knowledge of their mechanism of action or their ultimate metabolic fate. Thus, more simply stated, although sub lingual nitrates helped the patients, little was known concerning what these drugs do to the body or what the body does to the drugs. A substantial number of investigators have focused on these questions especially during the last two decades. We now have considerably more insight into the pathways of degradation of organic nitrates and the relationship of the metabolic processes to the biological action of these agents. Similarly, considerable effort has been expended in understanding the mechanism of action of these agents directly on vascular smooth muscle and on cardiac work and performance. Finally, there is a more substantive understanding of the physiology of the coronary circulation as well as the" pathophysiologic manifestations of myocardial disease.
Download or read book Nitrate Agriculture and the Environment written by Tom M. Addiscott and published by CABI. This book was released on 2005 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will be of significant value to students of soil, crop, environmental and pollution sciences."--BOOK JACKET.
Download or read book Nitrate Esters Chemistry and Technology written by Jiping Liu and published by Springer. This book was released on 2019-03-06 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: The idea of this book is to present the up-to-date research results on Nitrate Esters as explosive materials. It covers many aspects including the material structures, nitrating agent, chemical synthesis devices, preparation technology, and applications etc. In particular, this work sheds light on the comprehensive utilization and thorough destruction of the used Nitrate Easters which is crucial for preventing repeated pollution. This is a highly informative and instructive book providing insight for the researchers working on nitrating theory, energetic materials and chemical equipments.
Download or read book This Film Is Dangerous written by International Federation of Film Archives and published by FIAF. This book was released on 2002-08 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Film Is Dangerous is an anthology published by the International Federation of Film Archives (FIAF) to examine and to celebrate the life, the death, the afterlife, and the mythology of nitrate film. It incorporates the papers given at the symposium The Last Nitrate Picture Show during the FIAF Congress in London in June 2000, as well as a wealth of original contributions by historians, archivists, veterans, and enthusiasts around the world.
Download or read book Colorimetric Determination of Nitrate Plus Nitrite in Water by Enzymatic Reduction Automated Discrete Analyzer Methods written by Charles J Patton and published by CreateSpace. This book was released on 2014-06-16 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents work at the U.S. Geological Sur- vey (USGS) National Water Quality Laboratory (NWQL) to validate enzymatic reduction, colorimetric determinative meth- ods for nitrate + nitrite in filtered water by automated discrete analysis. In these standard- and low-level methods (USGS I-2547-11 and I-2548-11), nitrate is reduced to nitrite with nontoxic, soluble nitrate reductase rather than toxic, granular, copperized cadmium used in the longstanding USGS auto- mated continuous-flow analyzer methods I-2545-90 (NWQL laboratory code 1975) and I-2546-91 (NWQL laboratory code 1979). Colorimetric reagents used to determine resulting nitrite in aforementioned enzymatic- and cadmium-reduction meth- ods are identical. The enzyme used in these discrete analyzer methods, designated AtNaR2 by its manufacturer, is produced by recombinant expression of the nitrate reductase gene from wall cress (Arabidopsis thaliana) in the yeast Pichia pastoris. Unlike other commercially available nitrate reductases we evaluated, AtNaR2 maintains high activity at 37°C and is not inhibited by high-phenolic-content humic acids at reaction temperatures in the range of 20°C to 37°C. These previously unrecognized AtNaR2 characteristics are essential for success- ful performance of discrete analyzer nitrate + nitrite assays (henceforth, DA-AtNaR2) described here.
Download or read book Managing Risks of Nitrates to Humans and the Environment written by A. S. Ball and published by Woodhead Publishing. This book was released on 1999 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers the latest research information on the beneficial effects of nitrates and their fate in the environment and will be applicable to a wide research audience.
Download or read book Nitrates in Groundwater written by Larry W. Canter and published by Routledge. This book was released on 2019-01-22 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This time-saving book provides extensive coverage of all important aspects of nitrates in groundwater, ranging from prevention to problem assessment to remediation. It begins by highlighting the nitrogen cycle and related health concerns, providing both background information and a unique perspective on health issues. It then analyzes subsurface pr
Download or read book Effects of Irrigation Methods on Groundwater Pollution by Nitrates and Other Solutes written by Charles W. Wendt and published by . This book was released on 1976 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution of Nitrates and Other Water Pollutants Under Fields and Corrals in the Middle South Platte Valley of Colorado written by Bobby Alton Stewart and published by . This book was released on 1967 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical News and Journal of Industrial Science written by and published by . This book was released on 1907 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Separation of Cerium from Other Rare Earths by Ignition of the Nitrates written by Russell W. Johnson and published by . This book was released on 1958 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cellulose Nitrate in Conservation written by Charles M. Selwitz and published by Getty Publications. This book was released on 1988-04-01 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report attempts to isolate and separately examine each of the factors known to lead to cellulose nitrate decomposition, and then relate their contribution to the instability of the polymer when it is used as a bonding agent for ceramics and as a lacquer for metal objects. These factors include deterioration caused by heat, radiation, or acid impurities, or through the loss of plasticizer. There is, moreover, decomposition caused autocatalytically by the initial breakdown products. In particular, the publication examines new information on chemical changes under ambient conditions that has been developed recently through advances in analytical procedures such as chemiluminescence, X-ray scanning spectroscopy (ESCA), and more sophisticated viscometry. This new information will be added to the large body of data, collected over the past 150 years, on the instability of cellulose nitrate under more severe conditions.
