Download or read book Application of Short Term Bioassays in the Fractionation and Analysis of Complex Environmental Mixtures written by Michael D. Waters and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 565 pages. Available in PDF, EPUB and Kindle. Book excerpt: vi Williamsburg, Virginia, February 21-23, 1978. This symposium was sponsored by the U. S. Environmental Protection Agency, Office of Energy Minerals and Industry, Washington, DC, and Office of Health and Ecological Effects, Health Effects Re search Laboratory, Biochemistry Branch, Research Triangle Park, NC. The symposium consisted of 24 formal presentations that amplify the three major topics discussed during the symposium: an overview of short-term bioassay systems; current methodology involving the collection and chemical analysis of environmental samples; and current research in volving the use of short-term bioassays in the fractionation and analysis of complex environmental mixtures. The purpose of this symposium was to present the state-of-the-art tech niques in bioassay and chemical analysis as applied to com plex mixtures and to foster continued advancement of this important area. Complex mixtures discussed include ambient air and water, waste water, drinking water, shale oil, syn thetic fuels, automobile exhaust, diesel particulate, coal fly ash, cigarette smoke condensates, and food products. It is our hope that this volume will serve as a refer ence to catalyze and encourage further research in this field. Michael D. Waters, Ph. D. Stephen Nesnow, Ph. D. vii Acknowledgment We would like to thank Gerald Rausa, Office of Energy Minerals and Industry, for his advice, encouragement, and support of this program. We would also like to express our appreciation to Wendy A. Martin, Peter A. Murphy, and David F. Wright of Kappa Systems, Inc.
Download or read book Applied Fractionalization written by Tarun Grover (Ph. D.) and published by . This book was released on 2010 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Strongly correlated systems present interesting challenges in condensed matter physics. On the one hand, the theoretical work in the last two decades suggests that strong interactions may lead to new phases and phase transitions of matter that don't fit paradigms such as Fermi liquid theory or Landau's theory of phase transitions. On the other hand, there are actual materials which are undoubtedly governed by strong interactions and indeed do not fit the conventional paradigms but whose behavior often doesn't quite match our theoretical expectations. This gap between theory and experiments is slowly narrowing owing to the discovery of new materials and recent advances in numerical simulations. As an example, the material K - (ET)2Cu 2(CN) 3 exhibits metallic specific heat in its insulating phase. This is indicative of the theoretically proposed phenomena of 'fractionalization' where elementary excitations in a phase carry quantum numbers that are fractions of that corresponding to an electron. Similarly, there is growing numerical evidence of the theoretical phenomena of 'deconfined quantum criticality', where quantum Berry phases lead to emergence of fractionalized particles right at the phase transition. In this thesis we study phenomena where the concept of fractionalization is a useful tool to explore new phases and phase transitions. Most of our examples are in the context of frustrated quantum magnets. Along the way, we also explore topics such as quantum numbers of topological defects and non-abelian phases of matter. Whenever possible, we compare theoretical predictions with experimental and numerical data. We also discuss deconfined quantum criticality in the context of metallic systems where it opens the route to phase transitions very different from the conventional spin-density wave instability of Fermi surface.
Download or read book Applied Principles of Fractionation written by George Wilson LeMaire and published by . This book was released on 1953 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lipid Technologies and Applications written by Frank D. Gunstone and published by CRC Press. This book was released on 1997-05-13 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Provides a comprehensive review of the major technologies and applications of lipids in food and nonfood uses, including current and future trends. Discusses the nature of lipids, their major sources, and role in nutrition."
Download or read book Advances in Applied Microbiology written by and published by Academic Press. This book was released on 1970-01-31 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Applied Microbiology
Download or read book Lignin based Materials written by Kuruvilla Joseph and published by Royal Society of Chemistry. This book was released on 2023-06-14 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing a neat overview of the current research for the biomaterials science community, this book is a one-stop resource for researchers and practitioners working on lignin-based biomaterials..
Download or read book Field Flow Fractionation written by Josef Janca and published by CRC Press. This book was released on 2022-11-08 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Field-flow fractionation has become a very effective method for the separation and analytical characterization of substances of macromolecular and particulate character-making this method probably the most important discovery in the analytical separation field since World War II. The first, complete, up-to-date reference on this notable separation method, Field-Flow Fractionation includes comprehensive explanations of general and theoretical principles . . . presents detailed descriptions of experimental techniques and instrumentation ... and discusses advantages over competitive processes. In addition, this resource demonstrates various applications for characterizing synthetic polymers ... analyzing biopolymers and particles in environmental samples ... and determining sizes of biological cells, viruses, and subcellular particles. Substantiating main conclusions of theories, experiments, and applications with graphs and drawings, and including numerous tables and photographs, this one-source reference is invaluable reading for analytical, industrial, physical, and polymer chemists; chrom atographers; biochemists; biotechnologists; biophysicists; and all others interested in the study and characterization of macromolecules or particles of various origins.
Download or read book Studies in Natural Products Chemistry written by Atta-ur Rahman and published by Elsevier. This book was released on 2019-11-14 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies in Natural Products Chemistry, Volume 63, covers the rapid developments in spectroscopic techniques and accompanying advances in high-throughput screening techniques that have made it possible to rapidly isolate and determine the structures and biological activity of natural products. The book highlights these new and exciting opportunities in the field of new drug development to the pharmaceutical industry. As natural products in the plant and animal kingdom offer a huge diversity of chemical structures that are the result of biosynthetic processes that have been modulated over the millennia through genetic effects, this book is an ideal resource on the material presented. Focuses on the chemistry of bioactive natural products Contains contributions by leading authorities in the field Presents sources of new pharmacophores
Download or read book Biopharmaceutical Production Technology 2 Volume Set written by Ganapathy Subramanian and published by John Wiley & Sons. This book was released on 2012-08-20 with total page 945 pages. Available in PDF, EPUB and Kindle. Book excerpt: Systematically addressing the key steps and challenges along the biopharmaceutical production process, this two volume handbook provides key knowledge for medium to large scale producers of biopharmaceuticals. The volumes are divided into six major parts, on upstream technologies, protein recovery, process development, analytical technologies, quality control, and an outlook section that addresses new and emerging technologies, such as single-use processes and integrated process design. With contributions by some 40 experts from academia, as well as small and large biopharmaceutical companies, this unique handbook is full of valuable first-hand knowledge on how to produce biopharmaceuticals in a cost-effective and quality-controlled manner.
Download or read book Labile Organic Matter written by Zhongqi He and published by John Wiley & Sons. This book was released on 2020-01-22 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Because of its dynamic nature, labile organic matter is a key player in terrestrial and aquatic ecosystems. Editors Zhongqi He and Fengchang Wu include contributions from more than 30 senior researchers and innovative junior investigators from six countries. With issue-oriented comprehensive reviews and problem-solving case studies, this collection brings together soil and aquatic scientists to provide a comprehensive understanding for managing the sources and fates of labile organic matter. A timely synthesis of recent research, this collection illustrates the remarkable range of advanced techniques and approaches for labile organic matter research. This book will serve as a valuable reference for university faculty, graduate students, soil scientists, ecologists, limnologists, marine scientists, environmental scientists, agricultural engineers, and any who work with various aspects of labile organic matter in the environment."
Download or read book Pesticide residues in food written by and published by Food & Agriculture Org.. This book was released on 1999 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Health Perspectives written by and published by . This book was released on 1987 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Methodologies for Soil and Sediment Fractionation Studies written by Philippe Quevauviller and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis of soils and sediments for pollutants is increasingly required in today's industrial world. It is therefore important that extraction procedures used for environmental risk assessment studies, production of certified reference materials and applications of extraction schemes are standardised throughout the scientific community. This book deals specifically with operationally-defined extraction methods for the determination of "fractions" of elements in soil and sediment matrices. Bringing together the work of a number of different international laboratories, the book describes single and sequential extraction procedures. It then goes on to present a summary of the latest research on extraction/leaching tests for the determination of trace organic compounds in wastes, followed by an outline of an international network which aims to standardise extraction and leaching methodologies for their applications to various environmental matrices. Methodologies for Soil and Sediment Fractionation Studies will be welcomed by researchers and analysts in academia, industry and government institutions worldwide.
Download or read book Food Forensics and Toxicology written by Titus A. M. Msagati and published by John Wiley & Sons. This book was released on 2017-10-16 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive guide, offering a toxicological approach to food forensics, that reviews the legal, economic, and biological issues of food fraud Food Forensics and Toxicology offers an introduction and examination of forensics as applied to food and foodstuffs. The author puts the focus on food adulteration and food fraud investigation. The text combines the legal/economic issues of food fraud with the biological and health impacts of consuming adulterated food. Comprehensive in scope, the book covers a wide-range of topics including food adulteration/fraud, food "fingerprinting" and traceability, food toxicants in the body, and the accidental or deliberate introduction of toxicants into food products. In addition, the author includes information on the myriad types of toxicants from a range of food sources and explores the measures used to identify and quantify their toxicity. This book is designed to be a valuable reference source for laboratories, food companies, regulatory bodies, and researchers who are dealing with food adulteration, food fraud, foodborne illness, micro-organisms, and related topics. Food Forensics and Toxicology is the must-have guide that: Takes a comprehensive toxicological approach to food forensics Combines the legal/economic issue of food fraud with the biological/health impacts of consuming adulterated food in one volume Discusses a wide range of toxicants (from foods based on plants, animals, aquatic and other sources) Provides an analytical approach that details a number of approaches and the optimum means of measuring toxicity in foodstuffs Food Forensics and Toxicology gives professionals in the field a comprehensive resource that joins information on the legal/economic issues of food fraud with the biological and health implications of adulterated food.
Download or read book Application of Geochemical Tracers to Fluvial Sediment written by Jerry R. Miller and published by Springer. This book was released on 2014-12-03 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book takes an in-depth look at the theory and methods inherent in the tracing of riverine sediments. Examined tracers include multi-elemental concentration data, fallout radionuclides (e.g., 210Pb, 137Cs, 7Be), radiogenic isotopes (particularly those of Pb, Sr, and Nd), and novel (“non-traditional”) stable isotopes (e.g., Cd, Cu, Hg, and Zn), the latter of which owe their application to recent advances in analytical chemistry. The intended goal is not to replace more ‘traditional’ analyses of the riverine sediment system, but to show how tracer/fingerprinting studies can be used to gain insights into system functions that would not otherwise be possible. The text, then, provides researchers and catchment managers with a summary of the strengths and limitations of the examined techniques in terms of their temporal and spatial resolution, data requirements, and the uncertainties in the generated results. The use of environmental tracers has increased significantly during the past decade because it has become clear that documentation of sediment and sediment-associated contaminant provenance and dispersal is essential to mitigate their potentially harmful effects on aquatic ecosystems. Moreover, the use of monitoring programs to determine the source of sediments to a water body has proven to be a costly, labor intensive, long-term process with a spatial resolution that is limited by the number of monitoring sites that can be effectively maintained. Alternative approaches, including the identification and analysis of eroded upland areas and the use of distributed modeling routines also have proven problematic. The application of tracers within riverine environments has evolved such that they focus on sediments from two general sources: upland areas and specific, localized, anthropogenic point sources. Of particular importance to the former is the development of geochemical fingerprinting methods that quantify sediment provenance (and to a much lesser degree, sediment-associated contaminants) at the catchment scale. These methods have largely developed independently of the use of tracers to document the source and dispersal pathways of contaminated particles from point-sources of anthropogenic pollution at the reach- to river corridor-scale. Future studies are likely to begin merging the strengths of both approaches while relying on multiple tracer types to address management and regulatory issues, particularly within the context of the rapidly developing field of environmental forensics.
Download or read book The Effect of Radionuclide Fractionation on the Normalization Factor for Fallout Fields written by G. R. Crocker and published by . This book was released on 1965 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report compares the normalization factor, r/hr per kt/mi]2, calculated for unfractionated fission products with the normalization factors calculated from field data for a near-surface silicate soil burst and a silicate soil cratering burst. The large discrepancies between predicted and observed values appear to be caused by a combination of radionuclide fractionation, ground roughness and instrument self-shielding, and gradient effects. Fractionation effects can cause a difference of a factor of five in the normalization factors for surface and cratering bursts, allowing about 50% reduction in radiation due to ground roughness and instrument self-shielding. Ionization-chamber measurements on field-collected samples are correlated with their degree of fractionation in this report, and a reasonable correspondence between the ionization-chamber readings and the exposure rates measured in the field is established.
