Download or read book Developments in Polyacetylene Nanopolyacetylene written by V.M. Kobryanskii and published by iSmithers Rapra Publishing. This book was released on 2000 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This review discusses the preparation of highly ordered polyacetylene blends and compares forms of polyacetylene obtained by different methodsand includes an analysis of the formation of defects in polyacetylene during growth of the polyene chain and cis-trans isomerisation. The mechanism of acetylene polymerisation with rhenium catalysts, and the reactivity of highly ordered polyacetylene blends to oxidation and doping are also discussed. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database gives useful references for further reading.

Download or read book Polyacetylene written by James C.W. Chien and published by Elsevier. This book was released on 2012-12-02 with total page 649 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polyacetylene: Chemistry, Physics, and Material Science reviews the chemistry, physics, and material science of polyacetylene. Topics covered include polymerization and crystal structure of polyacetylene, isomerization, neutral defects, and solitons. Globular morphology and the effect of heat of polymerization on polyacetylene are also discussed, along with doping and chemical reactions of polyacetylene. This book is comprised of 12 chapters and begins with an introduction to a few basic principles of polymer chemistry and solid-state physics, followed by an overview of charge-transfer salts and conducting polymers other than polyacetylene and a historical background on polyacetylene and a general description of its properties. The next chapter gives a detailed treatment of polymerization, with particular reference to the mechanisms and kinetics of acetylene polymerization and direct determination of polyacetylene molecular weight by radioquenching. The remaining chapters focus on the crystal structures and morphology of undoped polyacetylenes; methods of isomerization; spectroscopic, physical, and mechanical properties of undoped polyacetylene; and various chemical reactions of polyacetylene and polymethylacetylene. The probable mechanisms of doping are proposed and theoretical models for polyacetylene are presented. The final chapter considers a few technical applications of polyacetylene. This monograph will be of interest to chemists, physicists, and polymer scientists and engineers.

Download or read book Bioactive Foods in Promoting Health written by Ronald Ross Watson and published by Academic Press. This book was released on 2009-11-24 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: While everyone knows fruits and vegetables are beneficial to good health, it's increasingly seen as important to know which ones can be effective in treating specific illnesses. For example, which are good for cardiac care? Which can help combat and treat asthma? What are the safety concerns to be aware of when using herbs in combination with traditional medicines?Diet and nutrition are vital keys to controlling or promoting morbidity and mortality from chronic diseases, and the multitude of biomolecules in dietary fruits and vegetables play a crucial role in health maintenance. They may, therefore, be more effective and certainly could have different actions beyond nutrients however this science is still evolving. This book brings together experts working on the different aspects of supplementation, foods, and plant extracts, in health promotion and disease prevention. Their expertise and experience provide the most current knowledge to promote future research. Dietary habits need to be altered, for most people and the conclusions and recommendations from the various chapters in this book will provide a basis for that change.The overall goal of this book is to provide the most current, concise, scientific appraisal of the efficacy of key foods and constituents medicines in dietary plants in preventing disease and improving the quality of life. While vegetables have traditionally been seen to be good sources of vitamins, the roles of other constituents have only recently become more widely recognized. This book reviews and often presents new hypotheses and conclusions on the effects of different bioactive components of the diet, derived particularly from vegetables, to prevent disease and improve the health of various populations. - Identify bioactive fruit and vegetable options for prevention or treatment of illness - Moves from general overview to disease specific applications providing a framework for further research and deeper understanding - Includes discussion of issues and challenges, permitting critical analysis and evaluation

Download or read book Bioactive Dietary Factors and Plant Extracts in Dermatology written by Ronald Ross Watson and published by Springer Science & Business Media. This book was released on 2012-11-28 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: The role of Bioactive Dietary Factors and Plant Extracts in Preventive Dermatology provides current and concise scientific appraisal of the efficacy of foods, nutrients, herbs, and dietary supplements in preventing dermal damage and cancer as well as improving skin health. This important new volume reviews and presents new hypotheses and conclusions on the effects of different bioactive foods and their components derived particularly from vegetables, fruits, and herbs. Primary emphasis is on treatment and prevention of dermal damage focusing on skin cancers with significant health care costs and mortality. Bioactive Dietary Factors and Plant Extracts in Preventive Dermatology brings together expert clinicians and researchers working on the different aspects of supplementation, foods, and plant extracts and nutrition and skin health. Their expertise provides the most current knowledge in the field and will serve as the foundation for advancing future research.

Download or read book High Performance Liquid Chromatography in Phytochemical Analysis written by Monika Waksmundzka-Hajnos and published by CRC Press. This book was released on 2010-11-08 with total page 998 pages. Available in PDF, EPUB and Kindle. Book excerpt: The powerful, efficient technique of high performance liquid chromatography (HPLC) is essential to the standardization of plant-based drugs, identification of plant material, and creation of new herbal medicines. Filling the void in this critical area, High Performance Liquid Chromatography in Phytochemical Analysis is the first book to give a comp

Download or read book Antiviral Compounds From Plants written by James B. Hudson and published by CRC Press. This book was released on 2018-01-10 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: This timely publication describes the botanical sources and chemical features of antiviral compounds. It covers their mechanisms of action and evaluates their therapeutic potential. Included is a discussion of synthetic analogues where appropriate. The book states that antiviral compounds in so-called medicinal plants may constitute some of their "active ingredients." It explains that many are photosensitizers, their antiviral activity dependent upon or augmented by light of specific wavelengths. This book is of value to microbiologists, phytochemists, virologists, natural-product chemists, ethnobotanists, pharmacologists, medical and veterinary researchers, and others interested in the application of plant compounds to therapy of infectious diseases.

Download or read book Biomaterials from Aquatic and Terrestrial Organisms written by Milton Fingerman and published by CRC Press. This book was released on 2006-01-06 with total page 623 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organisms, both aquatic and terrestrial, are sources of a wide variety of substances, many of which have already been shown to be bioactive. They play a wide variety of physiological and environmental roles. These chemicals include a broad array of proteins, lipids, and polysaccharides. Many of these natural products find applications in industry,

Download or read book Proceedings written by and published by . This book was released on 1970 with total page 1532 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Materials Science of Membranes for Gas and Vapor Separation written by Benny Freeman and published by John Wiley & Sons. This book was released on 2006-05-12 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials Science of Membranes for Gas and Vapor Separation is a one-stop reference for the latest advances in membrane-based separation and technology. Put together by an international team of contributors and academia, the book focuses on the advances in both theoretical and experimental materials science and engineering, as well as progress in membrane technology. Special attention is given to comparing polymer and inorganic/organic separation and other emerging applications such as sensors. This book aims to give a balanced treatment of the subject area, allowing the reader an excellent overall perspective of new theoretical results that can be applied to advanced materials, as well as the separation of polymers. The contributions will provide a compact source of relevant and timely information and will be of interest to government, industrial and academic polymer chemists, chemical engineers and materials scientists, as well as an ideal introduction to students.

Download or read book Inorganic and Organic Thin Films written by Yujun Song and published by John Wiley & Sons. This book was released on 2021-03-30 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: Learn more about foundational and advanced topics in polymer thin films and coatings besides species with this powerful two-volume resource The two-volume Inorganic and Organic Thin Films: Fundamentals, Fabrication, and Applications delivers a foundational resource for current researchers and commercial users involved in the design and fabrication of thin films. The book offers newcomers to the field a thorough description of new design theory, fabrication methods, and applications of advanced thin films. Readers will discover the physics and chemistry underlying the manufacture of new thin films and coatings in this leading new resource that promises to become a handbook for future applications of the technology. This one-stop reference brings together all important aspects of inorganic and polymeric thin films and coatings, including construction, assembly, deposition, functionality, patterning, and characterization. Explorations of their applications in industries as diverse as information technology, new energy, biomedical engineering, aerospace, and oceanographic engineering round out this fulsome exploration of one of the most exciting and rapidly developing areas of scientific and industrial research today. Readers will also learn from: A comprehensive introduction to the progress of thin films and coatings as well as fundamentals in functional thin films and coatings An exploration of multi-layered magnetic thin films for electron transport control and signal sensing, including giant magnetoresistance, colossal magnetoresistance, tunneling magnetoresistance, and the quantum anomalous Holzer effect An in time summary of high-quality magneto-optics, nanophotonics, spin waves and spintronics using bismuth-substituted iron garnet thin films as examples A thorough discussion of template-assisted fabrication of nanostructure thin films for ultrasensitive detection of chemicals and biomolecules A treatment of biomass derived functional films and coatings Perfect for materials scientists and inorganic chemists, Inorganic and Organic Thin Films will also earn a place in the libraries of solid state physicists and physical chemists working in private industry, as well as polymer and surface chemists who seek to improve their understanding of thin films and coatings.

Download or read book Nanostructured Polymer Membranes Volume 2 written by Visakh P. M. and published by John Wiley & Sons. This book was released on 2016-08-26 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2nd volume on applications with discuss the various aspects of state-of-the-art, new challenges and opportunities for gas and vapor separation of polymer membranes, membranes for wastewater treatment, polymer electrolyte membranes and methanol fuel cells, polymer membranes for water desalination, optical, electrochemical and anion/polyanion sensors, polymeric pervaporation membranes, organic-organic separation, biopolymer electrolytes for energy devices, carbon nanoparticles for pervaporation polymeric membranes, and mixed matrix membranes for nanofiltration application.

Download or read book Thin Layer Chromatography in Phytochemistry written by Monika Waksmundzka-Hajnos and published by CRC Press. This book was released on 2008-03-04 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin layer chromatography (TLC) is increasingly used in the fields of plant chemistry, biochemistry, and molecular biology. Advantages such as speed, versatility, and low cost make it one of the leading techniques used for locating and analyzing bioactive components in plants. Thin Layer Chromatography in Phytochemistry is the first sourc

Download or read book Membrane Materials for Gas and Separation written by Yuri Yampolskii and published by John Wiley & Sons. This book was released on 2017-01-10 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Si containing polymers have been instrumental in the development of membrane gas separation practices since the early 1970s. Their function is to provide a selective barrier for different molecular species, where selection takes place either on the basis of size or on the basis of physical interactions or both. Combines membrane science, organosilicon chemistry, polymer science, materials science, and physical chemistry Only book to consider polymerization chemistry and synthesis of Si-containing polymers (both glassy and rubbery), and their role as membrane materials Membrane operations present environmental benefits such as reduced waste, and recovered/recycled valuable raw materials that are currently lost to fuel or to flares

Download or read book Stereoselective Polymerization with Single Site Catalysts written by Lisa S. Baugh and published by CRC Press. This book was released on 2007-11-29 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: New synthetic techniques allow chemists to modify polymer microstructures more precisely than ever, making it possible to design materials that meet increasingly demanding performance requirements. Written and edited by experts in the field, Stereoselective Polymerization with Single-Site Catalysts reviews how the relative stereochemistry of

Download or read book Natural Products from Plants written by Leland J. Cseke and published by CRC Press. This book was released on 2016-04-19 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: 2008 NOMINEE The Council on Botanical and Horticultural Libraries Annual Award for a Significant Work in Botanical or Horticultural Literature From medicinal, industrial, and culinary uses to cutting-edge laboratory techniques in modern research and plant conservation strategies, Natural Products from Plants

Download or read book Micromolecular Evolution Systematics and Ecology written by O.R. Gottlieb and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: For several decades botanists have been impressed by the discovery that the distribution of secondary plant substances follows the general lines of plant relationships. However, it soon became clear that little was to be gained from the study of individual compounds and their natural distribu tion. Therefore, more comprehensive studies were attempt ed in which the secondary chemistry of a major plant group was carefully studied and evaluated in the broader context of comparative phytochemistry. Holger Erdtman's admir able work on Coniferae is the foremost example of this kind. Since then, there has been an upswing in the study of the biosynthesis of secondary plant substances and it has become quite customary to make use of biosynthetic knowledge in interpreting chemosystematic evidence. More over, since taxonomists have insisted that use be made of all potentially available evidence for building classifications, it has been claimed that chemosystematics too should con sider the whole array of constituents present in a major taxon. However, in practice it has proved difficult to utilize fully the potential of natural product chemistry and biosynthetic studies for plant systematics and evolution, because bota nists found themselves rather disorientated by the scattered, often hardly accessible chemical literature and the fact that the chemical evidence was difficult for them to evaluate! Although the pioneering work of E. C.

Download or read book Processing and Impact on Active Components in Food written by Victor R Preedy and published by Academic Press. This book was released on 2014-05-27 with total page 725 pages. Available in PDF, EPUB and Kindle. Book excerpt: From beef to baked goods, fish to flour, antioxidants are added to preserve the shelf life of foods and ensure consumer acceptability. These production-added components may also contribute to the overall availability of essential nutrients for intake as well as the prevention of the development of unwelcome product characteristics such as off-flavours or colours. However, there are processes that reduce the amount of naturally occurring antioxidants and awareness of that potential is just as important for those in product research and development. There is a practical need to understand not only the physiological importance of antioxidants in terms of consumer health benefit, but how they may be damaged or enhanced through the processing and packaging phases. This book presents information key to understanding how antioxidants change during production of a wide variety of food products, with a focus toward how this understanding may be translated effectively to other foods as well. - Addresses how the composition of food is altered, the analytical techniques used, and the applications to other foods - Presents in-chapter summary points and other translational insights into concepts, techniques, findings and approaches to processing of other foods - Explores advances in analytical and methodological science within each chapter