Download or read book Influence of Solvent shared Association on the Electronic Spectra of Aromatic Hydrocarbon Negative Ions written by Jan Dieleman and published by . This book was released on 1962 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Higher Education and Research in the Netherlands written by and published by . This book was released on 1963 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Philips Technical Review written by and published by . This book was released on 1964 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes section "Abstracts of recent scientific publications of the N.V. Philips' Gloeilampenfabrieken."
Download or read book Anion Receptor Chemistry written by Jonathan L Sessler and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anion recognition plays a critical role in a range of biological processes, and a variety of receptors and carriers can be found throughout the natural world. Chemists working in the area of supramolecular chemistry have created a range of anion receptors, drawing inspiration from nature as well as their own inventive processes. This book traces the origins of anion recognition chemistry as a unique sub-field in supramolecular chemistry while illustrating the basic approaches currently being used to effect receptor design. The combination of biological overview and summary of current synthetic approaches provides a coverage that is both comprehensive and comprehensible. First, the authors detail the key design motifs that have been used to generate synthetic receptors and which are likely to provide the basis for further developments. They also highlight briefly some of the features that are present in naturally occurring anion recognition and transport systems and summarise the applications of anion recognition chemistry. Providing as it does a detailed review for practitioners in the field and a concise introduction to the topic for newcomers, Anion Receptor Chemistry reflects the current state of the art. Fully referenced and illustrated in colour, it is a welcome addition to the literature.
Download or read book Public Health Consequences of E Cigarettes written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2018-05-18 with total page 775 pages. Available in PDF, EPUB and Kindle. Book excerpt: Millions of Americans use e-cigarettes. Despite their popularity, little is known about their health effects. Some suggest that e-cigarettes likely confer lower risk compared to combustible tobacco cigarettes, because they do not expose users to toxicants produced through combustion. Proponents of e-cigarette use also tout the potential benefits of e-cigarettes as devices that could help combustible tobacco cigarette smokers to quit and thereby reduce tobacco-related health risks. Others are concerned about the exposure to potentially toxic substances contained in e-cigarette emissions, especially in individuals who have never used tobacco products such as youth and young adults. Given their relatively recent introduction, there has been little time for a scientific body of evidence to develop on the health effects of e-cigarettes. Public Health Consequences of E-Cigarettes reviews and critically assesses the state of the emerging evidence about e-cigarettes and health. This report makes recommendations for the improvement of this research and highlights gaps that are a priority for future research.
Download or read book Principles of Chemical Nomenclature written by G. J. Leigh and published by Royal Society of Chemistry. This book was released on 2011 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aimed at pre-university and undergraduate students, this volume surveys the current IUPAC nomenclature recommendations in organic, inorganic and macromolecular chemistry.
Download or read book Organic Synthesis Workbook II written by Christian Bittner and published by Wiley-VCH. This book was released on 2001-12-21 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Regular practice makes perfect - and this is equally true of organic synthesis. Only the numerous and constantly new little tricks and tips make for elegant synthesis. Knowledge of synthesis methods, reactivities, reagents, protective groups and much more is best acquired - and retained - by way of detailed analysis and processing of complex synthesis paths. This workbook allows students to easily test and strengthen their own chemical repertoire by way of sixteen new syntheses, including tricycles, macrolides, terpenes, and alkaloids. It follows the tried-and-tested concept used in the first volume, although each volume can be read independently of the other. It briefly describes all the target molecules and the relevant synthesis tasks, before going on to classify them into smaller sub-problems that may be solved by the reader using tips given in varying detail. In this way, readers can define the degree of difficulty for themselves. The solution section with comments and a comprehensive discussion of the key steps in reaction sequences and their actual application allows a simple check of the student's own strategy. An appendix with references to original syntheses and further literature rounds off the whole. Whether prior to an examination, for preparing seminars or for ideas in looking for synthesis strategies, every organic chemist - practicing and ongoing - will profit from reading this workbook.
Download or read book Solvents Ionic Liquids and Solvent Effects written by Daniel Glossman-Mitnik and published by BoD – Books on Demand. This book was released on 2020-01-15 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solvents and ionic liquids are ubiquitous within our whole life since ancient times and their effects are actually being studied through basic sciences like Chemistry, Physics and Biology as well as being researched by a large number of scientific disciplines.This book represents an attempt to present examples on the utility of old and new solvents and the effects they exercise on several fields of academic and industrial interest. The first section, Solvents, presents information on bio-solvents and their synthesis, industrial production and applications, about per and trichloroethylene air monitoring in dry cleaners in the city of Sfax (Tunsia) and on the synthesis of polyimides using molten benzoic acid as the solvent. The second section, Ionic Liquids, shows information about the synthesis, physicochemical characterization and exploration of antimicrobial activities of imidazolium ionic liquid-supported Schiff base and its transition metal complexes, the technology of heterogenization of transition metal catalysts towards the synthetic applications in an ionic liquid matrix, the progress in ionic liquids as reaction media, monomers, and additives in high-performance polymers, a pre-screening of ionic liquids as gas hydrate inhibitor via application of COSMO-RS for methane hydrate, the extraction of aromatic compounds from their mixtures with alkanes from ternary to quaternary (or higher) systems and a review on ionic liquids as environmental benign solvent for cellulose chemistry. The final section, Solvent Effects, displays interesting information on solvent effects on dye sensitizers derived from anthocyanidins for applications in photocatalysis, about the solvent effect on a model of SNAr reaction in conventional and non-conventional solvents, and on solvent effects in supramolecular systems.
Download or read book Solvent Effects in Organic Chemistry written by Christian Reichardt and published by . This book was released on 1979 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book How Tobacco Smoke Causes Disease written by United States. Public Health Service. Office of the Surgeon General and published by . This book was released on 2010 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report considers the biological and behavioral mechanisms that may underlie the pathogenicity of tobacco smoke. Many Surgeon General's reports have considered research findings on mechanisms in assessing the biological plausibility of associations observed in epidemiologic studies. Mechanisms of disease are important because they may provide plausibility, which is one of the guideline criteria for assessing evidence on causation. This report specifically reviews the evidence on the potential mechanisms by which smoking causes diseases and considers whether a mechanism is likely to be operative in the production of human disease by tobacco smoke. This evidence is relevant to understanding how smoking causes disease, to identifying those who may be particularly susceptible, and to assessing the potential risks of tobacco products.
Download or read book WHO Report on the Global Tobacco Epidemic 2013 written by World Health Organization and published by World Health Organization. This book was released on 2013 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The continued success in global tobacco control is detailed in this year’s WHO Report on the Global Tobacco Epidemic, 2013. The fourth in the series, this year’s report presents the status of the MPOWER measures, with country-specific data updated and aggregated through 2012. In addition, the report provides a special focus on legislation to ban tobacco advertising, promotion and sponsorship (TAPS) in WHO Member States and an in-depth analyses of TAPS bans were performed, allowing for a more detailed understanding of progress and future challenges in this area."--Website summary.
Download or read book Mass Spectrometry written by Edmond de Hoffmann and published by Wiley. This book was released on 2001-10-10 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offers a complete overview of the principles, theories and key applications of modern mass spectrometry in this introductory textbook. Following on from the highly successful first edition, this edition is extensively updated including new techniques and applications. All instrumental aspects of mass spectrometry are clearly and concisely described; sources, analysers and detectors. * Revised and updated * Numerous examples and illustrations are combined with a series of exercises to help encourage student understanding * Includes biological applications, which have been significantly expanded and updated * Also includes coverage of ESI and MALDI
Download or read book Solid State Astrochemistry written by Valerio Pirronello and published by Springer Science & Business Media. This book was released on 2003-11-30 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fundamentals of astrochemistry in the gas phase are relatively well established, in contrast to the special relevance attributed to processes involving interstellar dust grains - the solid component of matter diffused among the stars. This book presents the state of the art in relation to the ways grains interact with gases, the catalytic role played by dust that allows key molecular species (H2 as well as many complex, possibly prebiotic species) to be formed on its surface - which cannot be obtained efficiently by any other mechanisms, and the interaction between solids (dust grains, icy mantles, cometary nuclei, satellites of the giant planets and minor bodies in the Solar system) in space and energetic agents such as UV photons and fast particles. The presence and importance of PAH, which may represent the smallest component of the grains, is considered in relation to possible astrobiological pathways and the ever-present mystery of the ubiquitous presence of Diffuse Interstellar Bands and their carriers.
Download or read book Solvent Effects and Chemical Reactivity written by Orlando Tapia and published by Springer Science & Business Media. This book was released on 2003-07-31 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an up-to-date view of theories, practical methods and applications of solvent effects and chemical reactivity in condensed phases. Subjects treated include continuum solvation models, the theoretical basis for the treatment of solvent effects in density functional theory, Monte Carlo simulations of chemical reactions in solution, DFT molecular dynamics simulations, crossing the transition state in solution, valence bond multi-state approach to chemical reactions in solution, quantum theory of solvent effects and chemical reactions. The approaches taken as well as the resulting findings are discussed in detail, thus covering a large part of the methodology currently used in this field. Audience: This volume will be useful to graduate students in chemistry, physical chemistry and biochemistry, to research workers with a background in quantum chemistry and quantum mechanics, to pure and applied quantum chemists, and to industrial molecular modellers.
Download or read book Modern Physical Organic Chemistry written by Eric V. Anslyn and published by University Science Books. This book was released on 2006 with total page 1148 pages. Available in PDF, EPUB and Kindle. Book excerpt: In additionto covering thoroughly the core areas of physical organic chemistry -structure and mechanism - this book will escortthe practitioner of organic chemistry into a field that has been thoroughlyupdated.
Download or read book Acid base Behavior in Aprotic Organic Solvents written by Marion Maclean Davis and published by . This book was released on 1968 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unified picture of acid-base behavior in aprotic organic solvents is presented, based on an extensive survey of the literature and experimental results of the author and associates. Evidence given to support this picture includes data pertaining to colligative properties of acids, bases, and salts and also conductance, dielectric constants, distribution between immiscible solvents, and spectral absorption in the infrared, visible, and ultraviolet. The acids upon which attention is centered are proton-donor compounds that are measurably ionized in water, such as aliphatic and aromatic carboxylic acids, substituted phenols and mineral acids. The bases of principal interest are likewise compounds capable of forming ions in water, for example, aliphatic and aromatic amines and derivatives of guanidine or pyridine. The solvents emphasized are hydrocarbons and halohydrocarbons, but data for dipolar aprotic solvents (for example, acetone, acetonitrile, and nitrobenzene) are included. Contrasts in acid-base behavior and in acidity and basicity scales in aprotic and water-like solvents are discussed. The role of hydrogen bonding in aprotic solvents is discussed at length. Important types of hydrogen-bonded structures include chelate rings; self-associated acids, bases, and salts; hydrogen-bonded ion pairs; and homo- and heteroconjugate cations and anions. Examples are given in which hydrogen bonding of these types affects such properties as the absorption spectrum of a salt, the catalytic effect of an acid, and the accurate location of a titration endpoint. (Author).
Download or read book Advanced Organic Chemistry written by Francis A. Carey and published by Springer Science & Business Media. This book was released on 2007-06-27 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two-part, fifth edition of Advanced Organic Chemistry has been substantially revised and reorganized for greater clarity. The material has been updated to reflect advances in the field since the previous edition, especially in computational chemistry. Part A covers fundamental structural topics and basic mechanistic types. It can stand-alone; together, with Part B: Reaction and Synthesis, the two volumes provide a comprehensive foundation for the study in organic chemistry. Companion websites provide digital models for study of structure, reaction and selectivity for students and exercise solutions for instructors.