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  • Analytical Methods for Major and Modified Nucleosides - HPLC, GC, MS, NMR, UV and FT-IR

    • 1st Edition
    • Volume 45A
    • English

  • The Central Neural Organization of Cardiovascular Control

    • 1st Edition
    • Volume 81
    • J. Ciriello + 2 more
    • English
    The Satellite Symposium of the 18th Annual Meeting of the Society for Neuroscience, "Function of the Ventrolateral Medulla in the Control of the Circulation", held in Ontario, Canada, focussed on the newest research developments into the central neural organisation of cardiovascular control. The central nervous system is vital in the controlling of arterial pressure via the regulation of sympathetic and parasympathetic nervous discharge to blood vessels and the heart. The central nervous system also controls the release of hormones that regulate the circulation and couple the circulatory system to different behaviours. This volume concentrates on the most recent experimental advances in the neurosciences. Current research disproves the concept of a vasomotor medullary centre, suggesting instead that the control of sympathetic preganglionic activity occurs via neural pathways. The pathways of greatest significance are proposed to originate from neurons located on, or close to, the ventral surface of the medulla oblongata. The proceedings of this symposium represent an important breakthrough in neuroscientific research. An indispensable resource book.

  • Optical Techniques to Characterize Polymer Systems

    • 1st Edition
    • H. Bässler
    • English
    To optimize the properties of polymers or to design new polymeric materials for special applications, one has to understand how their properties depend on chemical and physical structure. This, in turn, requires methods for material characterization operating on a microscopic level such as optical techniques. Over the past decades major progress has been made in exploiting the analytical power offered by spectroscopic methods if combined with modern light source and detection technology.This multi-author book has been written in order to acquaint a broader audience with these recent achievements. Its individual chapters have been arranged in three groups featuring absorption, luminescence and diffraction techniques including non-linear optics for probing the physical structure of polymers, as well as their dynamic behavior in the presence and absence of electronic excitation. Emphasis has been placed on recent developments in the spectroscopy of solid polymers.

  • Recent Advances in Zeolite Science

    • 1st Edition
    • Volume 52
    • J. Klinowski + 1 more
    • English
    Interest in zeolites continues to grow, making it vital to keep up to date with recent findings. These proceedings include some of the latest discoveries in the zeolite field. Four plenary lectures provide in-depth coverage of key topics, namely the influence of diffusion on catalysis, recent advances in synthesis, modification of zeolites by alumination, and quantum chemical studies of acidity. These are followed by nineteen papers written by contributors from all over the world covering a wide range of material of current interest. Several synthetic studies are presented, including the introduction of heteroatoms to induce higher catalytic acidity. Acidity and catalysis are probed by solid-state NMR and discussed through theoretical calculations. Two papers are concerned with the growing interest in using zeolites to catalyze shape-selective organic reactions. There are specific studies of zeolite characterization by NMR and electron energy loss spectroscopy. There are also a number of quantum chemical papers on zeolite stability and on the location of adsorbed species.The material presented is particularly up-to-date and will be of considerable interest to all research groups involved in zeolite sciences.

  • How to Conquer Air Pollution

    A Japanese Experience
    • 1st Edition
    • Volume 38
    • H. Nishimura
    • English
    Many parts of the world suffer from urban air pollution and, despite the vast amount of knowledge about its causes, most countries are slow to implement counter-measures. An outstanding exception is Tokyo which, once blanketed in a mantle of smog, now enjoys ``clean'' air in spite of highly concentrated activity and congested traffic.Based on the successful Japanese experience, this book describes all aspects of the measures necessary to combat air pollution. It begins with a well-documented history of the fight against air pollution and describes the processes and mechanisms of reaching a social consensus on pollution control. The essential steps in the process are the establishment of ambient air quality standards, the introduction of the total allowable mass of emission, and the legal control of each emission based on diffusion equations. The scientific background to this approach is fully explained, from epidemiology to computer simulations of air quality. An up-to-date account of emission control technology is also given, and the controversial issue of health damage compensation is examined, based on actual experience.An important feature of the book is that it is written by authors who were actually in the forefront of the battle against air pollution in Japan. Two of them worked successively as Director General of the Bureau of Air Quality of the central government, and a third helped local governments to force the central government to implement the most stringent auto-emission controls in the world.The book is intended not only for scientists, engineers and administrative planners dealing with pollution control, but also for anyone concerned about the serious global problem of urban air pollution.

  • Clays, Muds, and Shales

    • 1st Edition
    • Volume 44
    • C.E. Weaver
    • English
    This book provides a comprehensive and critical summary of clay mineral literature that relates to geology and geologic processes, making it useful both as a reference book for geologists and as a text for the specialist.The book encompasses the full scope of clay-shale geology. An introductory chapter provides basic background terminology and classification. This is followed by a relatively long chapter on the structure and composition of the various clay minerals. Chapter 3 provides an introduction to soil formation, chemical weathering, microbial alteration and the pedogenic formation of clay minerals. Chapters 4 and 5 cover the continental and marine transport, and deposition of clays. Both mechanisms and examples are presented, ranging from biodepositional to the nepheloid layer. Chapter 6 reviews data on the low to high temperature formation of clay minerals from marine volcanics, and the growth of authigenic clays in shallow marine, brackish, and evaporite environments. Chapter 7, Diagenesis Metamorphism, covers both burial diagenesis and the processes occurring during the conversion of shale to clay. Chapter 8 discusses the formation of authigenic-diageneti... formation of clays in sandstones. Chapter 9 describes the temperal distribution of clay minerals in North and South America, Europe, Africa and the Atlantic Ocean. The clay suites are related to factors such as continental drift, tectonics, climate and environment. The final brief chapter covers compaction, lithification and some general features of shales.The book is liberally sprinkled with x-ray patterns, chemical analyses, and SEM and TEM pictures, in addition to hundreds of examples.

  • Selective Sample Handling and Detection in High-Performance Liquid Chromatography

    • 1st Edition
    • Volume B
    • K. Zech + 1 more
    • English
    This is the second of a two-volume project which treats the handling, separation and detection of complex samples as an integrated, interconnected process. On the basis of this philosophy the editors have selected those contributions which demonstrate that optimal sample preparation leads to a simplification of detection or reduced demands on the separation process. Throughout the book emphasis is on chemical principles with minimum discussion of the equipment required - an approach which reflects the editors' view that the limiting factor in the analysis of complex samples is an incomplete knowledge of the underlying chemistry rather than the hardware available. This lack of knowledge becomes more evident as the demands for lower detection limits grow, as solving complex matrix problems requires a greater understanding of the chemical interaction between the substance to be analysed and the stationary phase. Thus, apart from one chapter dealing with chemically modified silicas, the main theme of the book is developed in three chapters on sample preparation and three on detection.The opening chapter outlines concentration and chromatography on chemically modified silicas with complexing properties, and gives examples of the use of these phases with organic and inorganic compounds. Chapter II, the first of the three contributions dealing with sample preparation, addresses such questions as whether the prepared sample is representative of the material to be analysed; how to avoid contamination; which separation procedure should be used to avoid tedious sample preparation. Chapter III describes the processing of whole blood for drug analysis. The determination of cyclosporine and its metabolites (an especially difficult case) demonstrates how comprehensive the optimisation of sample preparation must be to successfully perform the analysis. Several other examples are also given. Chapter IV deals with radio-column liquid chromatography and introduces the other theme of the book, i.e. selective detection methods. The widespread use of radioisotopes requires a high degree of purification during the manufacture of the compounds, as well as highly accurate detection methods in biological and biochemical studies.Chapter V continues the theme of selective detection with an overview of post-column reaction detection. The use of immobilised enzymes in post-column reactors or `pumpless' reactor systems for on-line reagent generation after the chromatographic separation step is discussed in detail. Various examples of the separation of biological compounds show how the production of electrochemical reagents and photochemical reaction detection have increased the selectivity of the detection, leading to more economical analytical systems. Selective detection employing luminescence detection techniques is outlined in Chapter VI. The use of immobilised fluorophores or the coupling to photochemical reactions leads to highly selective detection systems which can greatly simplify the sample handling. The final chapter reviews the use of continuous separation techniques in flow injection analysis thus revealing the need for a strong interdisciplinary dependence between sample handling and separation in this area.Written by experienced practitioners, this book will be extremely useful to investigators in many areas of application. Each chapter includes sufficient references to the literature to serve as a valuable starting point for more detailed investigation. The strong emphasis on sample handling makes the book unique in many ways and it will be welcomed by environmental scientists as well as those active in the clinical, pharmaceutical and bioanalytical fields.

  • Aphids

    • 1st Edition
    • Volume 2C
    • Bozzano G Luisa
    • English

  • Electron Tunneling in Chemistry

    • 1st Edition
    • Volume 30
    • R.F. Khairutdinov + 2 more
    • English
    In Volume 30, an attempt is made to consider comprehensively both theoretical and experimental data that have been obtained to date on electron tunneling reactions involving chemical compounds of various classes, and to discuss the role played by these reactions in different areas of chemistry. The discussion of the above problem is preceded by a review of data on tunneling phenomena in nuclear physics, atomic physics, solid-state physics, as well as on the tunneling effects in chemistry that go beyond the framework of the main subject of this monograph. This review is included to acquaint the reader with the role of tunneling phenomena in physics and chemistry as a whole, to show how diversified the kingdom of tunneling phenomena is, and to see more distinctly the similarities and the differences between electron tunneling in chemical reactions and other tunnel phenomena.

  • Tribological Design of Machine Elements

    • 1st Edition
    • D. Berthe + 3 more
    • English
    On previous occasions each Symposium has focused attention on a current and significant research topic, usually reflecting the interests of the Leeds or Lyon research groups, however this time the main focus was on the vitally important subject of technology transfer, providing the 154 delegates from 21 countries with the rare opportunity to discuss the impact of their studies on machine design.

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