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Selectivity
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Download or read book Selectivity written by Matt Supinski and published by Stackpole Books. This book was released on 2014-01-01 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Wow. What a book and what an undertaking. This should be a must-read for the most exacting fly fisherman. I would guess that it will be one of the most important reference volumes ever written. It should be read and re-read many times."--Ed Shenk, author of Ed Shenk's Fly Rod Trouting • Strategies for fooling tough fish in all types of environs, from tailwaters to spring creeks to Gaspe salmon streams • Breathtaking color photos from the top streams around the world • Hundreds of innovative fly patterns with recipes and notes
Book Synopsis Selectivity in Chemical Reactions by : J.C. Whitehead
Download or read book Selectivity in Chemical Reactions written by J.C. Whitehead and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this Workshop on "Selectivity in Chemical Reactions" was to examine the specific preferences exhibited by simple chemical reactions with regards to reagents having particular energy states, symmetries, alignment and orientation and the resulting formation of certain products with their corresponding energies, states, alignment and polarisation. Such problems come close to the ultimate goal of reaction dynamics of being able to determine experimentally and theoretically state-to-state cross sections and stereochemical effects under well defined and characterised conditions. There are many examples of highly selective and specific processes to be found in atmospheric and combustion chemistry and the production of population inversions amongst vibrational and electronic states lies at the heart of the development of chemical laser systems. Only when we can understand the fundamental processes that underlie the selectivity in the formation of products in a chemical reaction and the specific requirements of initial states of the reagents, can we expect to be able to develop the explanatory and predictive tools necessary to apply the subject to the development of new laser systems, efficient combustion schemes and specific methods of chemical synthesis, to the control of atmospheric pollution and to all problems in which it is necessary to direct the outcome of a chemical reaction in a specific way. The brief given to the Workshop was to critically review the field, to discuss the present limitations and difficulties and to identify new directions.
Book Synopsis Selectivity in Organic Synthesis by : Robert S. Ward
Download or read book Selectivity in Organic Synthesis written by Robert S. Ward and published by John Wiley & Sons. This book was released on 1999-05-04 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Selectivity is an increasingly important part of organic synthesis. The whole basis of organic chemistry, and especially organic synthesis, depends upon the selectivity which can be achieved in organic reactions. This concise textbook describes the strategies which can be adopted to improve selectivity, and the reactions which have been specially designed to afford high selectivity. The aim is to illustrate the range of processes to which these principles can be applied and the high degree of selectivity which can be achieved. Selectivity in Organic Synthesis aims to provide a solid introduction to this subject, focusing on the key areas and applications.
Book Synopsis Selectivity and Detectability Optimizations in HPLC by : Satinder Ahuja
Download or read book Selectivity and Detectability Optimizations in HPLC written by Satinder Ahuja and published by John Wiley & Sons. This book was released on 1989-06-06 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Performance Liquid Chromatography Edited by Phyllis Brown and Richard Hartwick This contributed volume is designed to consolidate the basic theories of chromatography along with the more exciting developments in the field. This monograph addresses some questions that concern researchers in separation science, including: what is the current state of the art in liquid chromatography; has the development of liquid chromatography plateaued; if so, what new methods will take its place or complement it; and if not, where will the new frontiers be and what direction will liquid chromatography take? 1989 (0 471-84506-X) 688 pp. Quantitative Structure-Chromatographic Retention Relationships R. Kaliszan Written by a pioneer in the field, this book extends and updates research on quantitative structure retention relationships by consolidating and critically reviewing the extensive literature on the subject, while also providing the basic theoretical and practical information required in all investigations involving chromatography, analytical chemistry, biochemistry, and pharmaceutical research. Among the topics covered are the nature of chromatographic interactions, molecular interpretation of distribution processes in chromatography, topological indices as retention descriptors, and multiparameter structure-chromatographic retention relationships. 1987 (0 471-85983-4) 303 pp. Detectors for Liquid Chromatography Edited by Edward S. Yeung With its singular coverage of this fast-growing field, Detectors for Liquid Chromatography presents the state of the art in this subject area. It offers a comprehensive examination of the basic principles behind the detector response, instrumentation, and selected applications for comparison and evaluation of potential. Specifically, topics given in-depth coverage include polarimetric, indirect absorbance, refractive index detectors, absorption detectors for HPLC, FTIR and fluorometric detection, detection based on electrical and electromechanical measurements, and mass spectroscopy as an on-line detector for HPLC. 1986 (0 471-82169-1) 366 pp.
Book Synopsis Retention and Selectivity in Liquid Chromatography by : R.M. Smith
Download or read book Retention and Selectivity in Liquid Chromatography written by R.M. Smith and published by Elsevier. This book was released on 1995-01-13 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together a number of studies which examine the ways in which the retention and selectivity of separations in high-performance liquid chromatography are dependent on the chemical structure of the analytes and the properties of the stationary and mobile phases. Although previous authors have described the optimisation of separations by alteration of the mobile phase, little emphasis has previously been reported of the influence of the structure and properties of the analyte. The initial chapters describe methods based on retention index group increments and log P increments for the prediction of the retention of analytes and the ways in which these factors are influenced by mobile phases and intramolecular interactions. The values of a wide range of group increments in different eluents are tabulated. Different scales of retention indices in liquid chromatography are described for the comparison of separations, the identification of analytes and the comparison of stationary phases. Applications of these methods in the pharmaceutical, toxicology, forensic, metabolism, environmental, food and other fields are reviewed. The effects of different mobile phases on the selectivity of the retention indices are reported. A compilation of sources of reported retention index values are given. Methods for the comparison of stationary phases based on the interactions of different analytes are covered, including lipophilic and polar indices, shape selectivity comparisons, their application to novel stationary phases, and chemometric methods for column comparisons.
Book Synopsis Metal Promoted Selectivity in Organic Synthesis by : A. Noels
Download or read book Metal Promoted Selectivity in Organic Synthesis written by A. Noels and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: The demand for selective organic reactions is growing more acute everyday. Indeed, greater product selectivity has an important impact on energy and resource utilization, in terms of reduced process energy requirements for product separation and purification, in terms of low-value by-products, and in terms of environmental acceptance and compatibility. Moreover, more and more chemicals, especially pharmaceuticals, have to be sold in an optically active form. The search for selectivity constitutes a tremendous challenge for the chemists. In the last two decades, homogeneous transition metal based catalysis has emerged as one of the most promising tools for obtaining selectivity. In connection with developments in this area, this book contains updated and expanded versions of most of the lectures presented at a Cornett course held in Trieste (Italy) in 1989 and sponsored by the European Community. A primary aim is to cultivate a deeper understanding of the parameters that govern the selectivities and stimulate a wider utilization of transition metal based catalysis in organic synthesis. All aspects of selectivity, chemo-, regio-, stereo- and enantioselectivity are considered and illustrated by applications in various fields or organic synthesis. The impact of catalysis in oxydation, reduction, carbonylation reactions, carbene chemistry, in Ni and Pd promoted dimerizations, oligomerizations as well as fonctionalisations is stressed, quite often with special emphasis laid on reaction mechanisms. In this aspect, the last chapter examplifies the interest of high pressure NMR and IR when investigating the nature of reaction intermediates in homogeneous reactions.
Book Synopsis Selectivity in State Aid Law and the Methods for the Allocation of the Corporate Tax Base by : Jérôme Monsenego
Download or read book Selectivity in State Aid Law and the Methods for the Allocation of the Corporate Tax Base written by Jérôme Monsenego and published by Kluwer Law International B.V.. This book was released on 2018-06-05 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: High profile cases before the European Commission and the EU courts have intensified scrutiny of the link between State aid law and the taxation of multinational enterprises. Certain decisions have raised questions about fiscal sovereignty and the interpretation of the rules on State aid – in particular the notion of selectivity, which have not been addressed in detail by existing research. The combination of the evolution of the notion of selectivity in State aid law, on the one hand, and the need to adapt the rules for the taxation of the profits of multinational enterprises to the modern economy, on the other hand, makes it necessary to assess whether existing as well as alternative rules for the allocation of the corporate tax base might entail a selective treatment. This book responds to the need of research in the area of State aid law applied to the taxation of the income of multinational enterprises, focusing on the crucial concept of selectivity. The analysis proceeds with a detailed investigation of the theoretical issues that arise when applying the selectivity test in State aid law to three methods for the allocation of the corporate tax base between the members of multinational enterprises: – the arm’s length principle; – transfer pricing safe harbours; and – systems of formula apportionment. This research project is conducted at a theoretical level, without considering national provisions or particular tax treaties. The author suggests an analytical framework on the application of the selectivity test to the three allocation methods. It is concluded that these methods are likely to have certain selective features, with varying possibilities to be justified by the inner logic of a corporate income tax system. It is also demonstrated that selectivity occurs for different reasons, due to the different rationales of the three allocation methods. This book is intended at contributing to the academic literature on the impact of State aid law on the principles for the taxation of the income of multinational enterprises. The outcome of this research project is also relevant for lawmakers who need to reconcile the imperatives of State aid law with the design of rules that match their tax policies, as well as for judges or lawyers who apply the rules on State aid to tax provisions.
Book Synopsis The Politics of Aid Selectivity by : Wil Hout
Download or read book The Politics of Aid Selectivity written by Wil Hout and published by Routledge. This book was released on 2007-06-28 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first extended analysis of selectivity policies of important bilateral and multilateral aid donors, this book combines a policy-analytical with a quantitative-empirical approach. Bringing out the conflicts that may exist between foreign assistance agendas and the desire of governments in developing countries to set priorities for their national
Book Synopsis Auditory Frequency Selectivity by : Brian Moore
Download or read book Auditory Frequency Selectivity written by Brian Moore and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most fundamental aspects of the auditory system is its frequency selectivity - the ability to resolve a complex sound into frequency compOhents. This ability plays a role in many aspects of auditory perception, including: the masking of one sound by another; the perception of pitch for pure tones and complex tones; the perception of timbre; the perception of the relative phase of components in complex sounds; and the perception of loudness. Over the last decade, there have been considerable advances in our understanding of frequency selectivity, both at the physiological and psychophysical level, and rapid progress continues to be made. This book summarizes the proceedings of a NATO Advanced Research Workshop on Auditory Frequency Selectivity which was held in Wolfson College, Cambridge from June 23rd to 27th, 1986. The Workshop brought together leading researchers from all disciplines relevant to the topic, with the aim of reviewing and consolidating the latest research findings, and identifying areas of uncertainty or controversy where further research is needed. The book is aimed primarily at research scientists and research students in the fields of psychology, audiology, auditory physiology, biophysics, medicine, acoustical engineering, noise control, communication and speech science. It should also be useful for advanced undergraduates in these disciplines. A feature of the book is that it includes summaries of the discussions which followed the presentation of each paper at the Workshop.
Book Synopsis The Increasing Selectivity of Foreign Aid, 1984-2002 by : David Dollar
Download or read book The Increasing Selectivity of Foreign Aid, 1984-2002 written by David Dollar and published by World Bank Publications. This book was released on with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Improving Trawl Selectivity in the Baltic by : Vesa Tschernij
Download or read book Improving Trawl Selectivity in the Baltic written by Vesa Tschernij and published by Nordic Council of Ministers. This book was released on 2002 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tiivistelmä.
Book Synopsis Universality and Selectivity in Income Support by : Sheila Shaver
Download or read book Universality and Selectivity in Income Support written by Sheila Shaver and published by Routledge. This book was released on 2019-05-20 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1997, this report examines the classic social policy question of whether pensions should be paid only to those with relatively few other resources, so that scarce funds go to the people who need them most, or whether it is more just, and pensions are more willingly funded, when everyone can expect to get one in their turn. Since the 1980s, the scale of social expenditure has come into question in most advanced industrial nations. The large shar of this expenditure devoted to the support of the aged, amidst growing numbers of old and very old people, has put age pensions at the centre of this discussion. Sheila Shaver examines this classic question in a comparative analysis of income support in six countries, drawing on data from the Luxembourg Income Study and the International Social Survey Programme. The statistical studies are embedded in a discussion of social policy and citizenship; need, poverty and social cohesion; and the structure and restructuring of welfare states.
Book Synopsis Manual on Estimation of Selectivity for Gillnet and Longline Gears in Abundance Surveys by : Holger Hovgêrd
Download or read book Manual on Estimation of Selectivity for Gillnet and Longline Gears in Abundance Surveys written by Holger Hovgêrd and published by Food & Agriculture Org.. This book was released on 2008-04-29 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual defines methods for estimating selectivity of gillnet and longline gears, with particular reference to the use of these gears in abundance surveys. The manual illustrates how gear design, the basic concepts of size selection and fish morphometric data can be used to model selectivity. Statistical estimation methods are described in detail, and examples given of their application in spreadsheets. The efficient use of these gears in abundance and research surveys is also discussed. Although the manual concentrates on gillnets and longlines, the methods given are general enough to be relevant to any research involving gear selectivity
Book Synopsis Functional Selectivity of G Protein-Coupled Receptor Ligands by : Kim Neve
Download or read book Functional Selectivity of G Protein-Coupled Receptor Ligands written by Kim Neve and published by Springer Science & Business Media. This book was released on 2009-02-27 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Functional selectivity refers to the ability of different ligands acting at one receptor subtype to activate multiple signaling pathways in unique combinations; that is, one drug can be an agonist at pathway A and an antagonist or partial agonist at pathway B, and another drug can have the reverse profile. Functional selectivity has profound implications for drug development, for chemical biology, and for the design of experiments to characterize receptor function. In Functional Selectivity of G Protein-Coupled Receptors expert neuroscientists and pharmacologists review the work that demonstrated the existence of functional selectivity, placed it within a theoretical framework, and provided a mechanistic basis for the phenomenon. This exciting, comprehensive, and future-oriented volume includes chapters that focus on theoretical and mechanistic aspects of functional selectivity and that cut across subfamilies of GPCRs. Additional chapters focus on subfamilies of therapeutically relevant receptors where there is considerable evidence of ligand functional selectivity. Accessible and authoritative, Functional Selectivity of G Protein-Coupled Receptors is a valuable educational tool and reference source for students and scientists interested in drug development, chemical biology, and GPCR function.
Book Synopsis Directed Selectivity in Organic Synthesis by : Tanja Gaich
Download or read book Directed Selectivity in Organic Synthesis written by Tanja Gaich and published by John Wiley & Sons. This book was released on 2014-01-21 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bringing together examples that until now were often hidden and widely spread throughout the original literature, this textbook shows how to use the correct reagents, conditions or reaction sequences to have access to all possible stereoisomers when beginning synthesis with only a single starting material. Adopting a didactic approach, the authors have chosen general and simple examples throughout the book so that these reactions can be transferred easily to other reaction types. While of major interest to master and PhD students alike, this book is also a source of valuable information for organic chemists in both academia and industry. Additional material for lectures at www.wiley-vch.de/textbooks
Book Synopsis Structure-Activity and Selectivity Relationships in Heterogeneous Catalysis by : R.K. Grasselli
Download or read book Structure-Activity and Selectivity Relationships in Heterogeneous Catalysis written by R.K. Grasselli and published by Elsevier. This book was released on 1991-07-09 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structure plays an important role in heterogeneous catalysis. It provides a framework for the arrangement and stragetic placement of key catalytic elements, hosting them in a prescribed manner so that their respective electronic properties can exhibit their desired catalytic functions and mutual interactions. Under reaction conditions these framework structures and their catalytic guests undergo dynamic processes becoming active participants of the overall catalytic process. They are not mere static geometric forms. The dynamics of catalytic structures are particularly vivid in selective oxidation catalysis where the lattice of a given catalytic solid partakes as a whole, not only its surface, in the redox processes of the reaction. The catalyst becomes actually a participating reagent. By proper choice of key catalytic elements and their host structures, preferred catalytic pathways can be selected over less desired ones. However, not only in selective redox catalysis does structure play an important role, its importance is also well documented, among others, in shape selective zeolite catalysis, enantioselective hydrogenation and hydrodesulfurization. The contributions presented in this book address the dynamic character of the solid state under catalytic reaction conditions. By relating structure to activity and selectivity in heterogeneous catalysis our understanding of such correlations has been significantly enhanced through the use of sophisticated spectroscopic means, surface science and modeling.
Book Synopsis The Selectivity of Drugs by : Adrien Albert
Download or read book The Selectivity of Drugs written by Adrien Albert and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1. 1 What is Selectivity? purpose, and crop protective agent for the A biologically-active substance is said to be second, but there is no fundamental difference selective if it strongly affects certain cells with of principle in their mode of action. out causing any change in others, even when the Drug therapy has two, fundamentally two kinds of cells are close neighbours. In living opposed divisions. The first of these strives to organisms, there are many substances, often improve the action of one of the cell's natural quite small molecules, which have been chosen agents by modifying the molecule in order to for their specificity. This choice has been made localize or intensify its action. For instance, under the strong pressure of natural selection, the solubility can be decreased to make it form unhurried by any consideration of time. Such a deposit, or a change is made so that it becomes chemical compounds operate the metabolism a poorer fit on the naturally-occurring destruc of the cells and tissues, and ensure their health, tive enzyme. Both of these devices have proved survival, and reproduction. Important among useful in therapy, e. g. with steroid hormones. the smaller of these selective molecules are Such drugs, which seek to improve on Nature vitamins, coenzymes, hormones, neurotrans by performing more desirably, are called mitters, inorganic ions, nutritional fragments, agonists.
