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Author: Manuel Ballester
Publisher:
ISBN:
Category : Carbon compounds
Languages : en
Pages : 308
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Book Description
Author: Manuel Ballester
Publisher:
ISBN:
Category : Carbon compounds
Languages : en
Pages : 308
Get Book Here
Book Description
Author: Manuel Ballester
Publisher:
ISBN:
Category : Carbon compounds
Languages : en
Pages : 0
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Book Description
Author: Hans Eggenkamp
Publisher: Springer
ISBN: 3642285066
Category : Science
Languages : en
Pages : 174
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Book Description
This book provides detailed information on the history, analysis and applications of chlorine and bromine isotope geochemistry. Chlorine and bromine are geochemically unique as they prefer to exist as single charged negative ions. For this reason isotope fractionation reflects mostly processes that are not related to changes in the redox state and this fractionation is generally modest. The book will describe the processes that are most easily detected using these isotopes. Also isotope variations, and processes that cause them, measured in oxidised species such as perchlorates and in organic molecules will be described in this book.
Author: Manuel Ballester
Publisher:
ISBN:
Category : Aromatic compounds
Languages : en
Pages : 0
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Book Description
The preparation and study of 55 new highly chlorinated compounds, including 31 chlorocarbons, 4 perchloroketones, 4 perchloroacids and 4 perchloroesters is reported. The chlorocarbons consist of derivatives of toluene, xylene, styrene, stilbene, p-xylylene, diphenylmethane, biphenyl, anthracene, phenanthren, fluorene, and benzene and biphenyl polymeric chlorocarbons. (Author).
Author: Christopher Bryson
Publisher: Seven Stories Press
ISBN: 1609800087
Category : Science
Languages : en
Pages : 401
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Book Description
With the narrative punch of Jonathan Harr’s A Civil Action and the commitment to environmental truth-telling of Erin Brockovich, The Fluoride Deception documents a powerful connection between big corporations, the U.S. military, and the historic reassurances of fluoride safety provided by the nation’s public health establishment. The Fluoride Deception reads like a thriller, but one supported by two hundred pages of source notes, years of investigative reporting, scores of scientist interviews, and archival research in places such as the newly opened files of the Manhattan Project and the Atomic Energy Commission. The book is nothing less than an exhumation of one of the great secret narratives of the industrial era: how a grim workplace poison and the most damaging environmental pollutant of the cold war was added to our drinking water and toothpaste.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309070848
Category : Nature
Languages : en
Pages : 98
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Book Description
As part of the effort to phase out the use of stratospheric ozone-depleting substances, such as chlorofluorocarbons (CFCs), the U.S. Navy is considering hydrofluorocarbons (HFCs) as replacements for the CFC refrigerants used aboard its submarines. Before using the HFCs, the Navy plans to set emergency exposure guidance levels (EEGLs) and continuous exposure guidance levels (CEGLs) to protect submariners from health effects that could occur as a result of accidental releases or slow leaks. In this report, the Subcommittee on Exposure Guidance Levels for Selected Hydrofluorocarbons of the National Research Council's (NRC 's) Committee on Toxicology independently reviews the scientific validity of the Navy's proposed 1-hr and 24-hr EEGLs and 90-day CEGLs for two of the candidate refrigerants-HFC-236fa and HFC-404a. In addition, the subcommittee reviews the the EEGLs and CEGL for HFC-23, one of the combustion products of HFC-236fa. This NRC report is intended to aid the Navy in using HFCs safely.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 290
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Book Description
Author: Kolio D. Troev
Publisher: Elsevier
ISBN: 008047649X
Category : Science
Languages : en
Pages : 308
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Book Description
Chemistry and Application of H-Phosphonates is an excellent source for those planning the synthesis of new phosphorus-containing compounds and in particular derivatives containing a phosphonate, phosphoramide or phosphonic acid diester group. The rich chemistry, low cost and easy availability of diesters of H-phosphonic acid makes them an excellent choice as synthone in a number of practically important reactions. Phosphonic acid esters are intermediates in the synthesis of important classes of compounds such as alpha-aminophosphonic acids, bisphosphonates, epoxyalkylphosphonates, alpha-hydroxyalkylphosphonates, phosphoramides, poly(alkylene H-phosphonate)s, poly(alkylene phosphate)s, nucleoside H-phosphonates. The synthesis of each of these compound classes is reviewed in detail. Alpha-Aminophosphonic acids are an important class of biologically active compounds, which have received an increasing amount of attention because they are considered to be structural analogues of the corresponding Alpha-amino acids. The utilities of alpha-aminophosphonates as peptide mimics, haptens of catalytic antibodies, enzyme inhibitors, inhibitors of cancers, tumours, viruses, antibiotics and pharmacologic agents are well documented. Alpha-Hydroxyalkanephosphonates are compounds of significant biological and medicinal applications. Dialkyl epoxyalkylphosphonates are of interest because of their use as intermediates in the synthesis of bioactive substances, and as modifiers of natural and synthetic polymers. Bisphosphonates are drugs that have been widely used in different bone diseases, and have recently been used successfully against many parasites. Poly(alkylene H-phosphonate)s and poly(alkylene phosphate)s are promising, biodegradable, water soluble, new polymer-carriers of drugs. Nucleoside H-phosphonates seem to be the most attractive candidates as starting materials in the chemical synthesis of DNA and RNA fragments. The 5'-hydrogen phosphonate-3'-azido-2',3'-dideoxythimidine is one of the most significant anti-HIV prodrug, which is currently in clinical trials. Chapters review the synthesis; physical and spectral properties (1H, 13C, 31P and 17O NMR data); characteristic reactions; important classes of compounds based on these esters of H-phosphonic acid; their application as physiologically active substances, flame retardants, catalysts, heat and light stabilizers, lubricants, scale inhibitors, polymer-carriers of drugs; preparation of H-phosphonate diesters and general procedures for conducting the most important reactions.* provides ideas for the synthesis of phosphonates, phosphoramides and diesters of phosphonic acid (new phosphorus-containing compounds)* reviews structure, spectra and biological activity of H-phosphonates and their derivatives* examines new areas of application of phosphorus-containing compounds
Author:
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 108
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Book Description
Author: John H. Cumberland
Publisher: Routledge
ISBN: 1317333977
Category : Nature
Languages : en
Pages : 507
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Book Description
Chlorofluorocarbons are known to be effective spray can propellants, solvents and refrigerators and were often used in deodorants, refrigerators and other goods. However, it was not known at the beginning of their use, the complex reaction that CFCs have on the earth’s climate. Originally published in 1982, this report explores early research into the effect that CFCs have on the environment and provides guidance on how this emerging issue should be dealt with. This title will be of interest to students of Environmental Studies.
