[PDF] Chemical Relaxation In Molecular Biology eBook

Author : I. Pecht
Publisher : Springer Science & Business Media
Page : 435 pages
File Size : 42,55 MB
Release : 2012-12-06
Category : Science
ISBN : 3642811175

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The development of an area of scientific research is a dynamic process with its own kinetic equations and its own physical mech anism. The study of fast chemical interactions and transformations is such an area, and while it is tempting to draw analogies or to speculate about the simplest model system, the lack of ade quately averaged observables is an annoying obstacle to such an undertaking. Sciences suffering from such conditions usually avoid quantitative models, be they primitive or complex. Instead, they prove their point by "case histories". Chemical relaxation kinetics started as an offspring of research in acoustics. In some aqueous ionic solutions anomalous acoustic absorption had been observed. A systematic study traced the cause of this absorption, showing that the covered frequency range and the intensity of the absorption were related in a predictable manner to the rate at which ions can interact and form structures differing in volume from the non interacting species. The step from this experimental observation and its correct, non trivial explanation to the discovery that all fast chemical pro cesses must reveal themselves quantitatively in the relaxation rate of a perturbed equilibrium state, and that perturbation para meters other than sound waves can be used for its exploitation, was made by MANFRED EIGEN in 1954. The foresightedness of K.F.

Author : I. Pecht
Publisher : Springer
Page : 418 pages
File Size : 37,9 MB
Release : 1977-08-01
Category : Science
ISBN : 9783540081739

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The development of an area of scientific research is a dynamic process with its own kinetic equations and its own physical mech anism. The study of fast chemical interactions and transformations is such an area, and while it is tempting to draw analogies or to speculate about the simplest model system, the lack of ade quately averaged observables is an annoying obstacle to such an undertaking. Sciences suffering from such conditions usually avoid quantitative models, be they primitive or complex. Instead, they prove their point by "case histories". Chemical relaxation kinetics started as an offspring of research in acoustics. In some aqueous ionic solutions anomalous acoustic absorption had been observed. A systematic study traced the cause of this absorption, showing that the covered frequency range and the intensity of the absorption were related in a predictable manner to the rate at which ions can interact and form structures differing in volume from the non interacting species. The step from this experimental observation and its correct, non trivial explanation to the discovery that all fast chemical pro cesses must reveal themselves quantitatively in the relaxation rate of a perturbed equilibrium state, and that perturbation para meters other than sound waves can be used for its exploitation, was made by MANFRED EIGEN in 1954. The foresightedness of K.F.

Author : E. Wyn-Jones
Publisher : Springer Science & Business Media
Page : 504 pages
File Size : 23,43 MB
Release : 2012-12-06
Category : Science
ISBN : 9401018553

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Chemical relaxation spectrometry involves the application of several different relaxation techniques to investigate the kinetics and mechanisms of fast chemical reactions and also dynamic molecul 10 ar processes that occur in liquids in the time range 1 - 10- secs. These methods have been used widely in several disciplines of the natural sciences including molecular biology, biochemistry, organic stereochemistry, detergent chemistry and inorganic chemistry. The purpose of the Advanced Study Institute was to provide a forum for scientists to discuss the role, scope and limitations of the various applications of chemical relaxation methods in order to stimulate discussion and interaction between workers in these different fields. The papers described in this volume are a summary of the contributions that were discussed at the meeting. The brief given to the authors was to attempt to prepare an article contain ing a good supply of references so that the book can be used not only by those starting in the field, but also by the specialist and research worker. These contributions cover a varied range of topics summarizing the achievements, the current state of knowledge and possible application in many disciplines. It is to be hoped that this volume will help to point out some new directions towards which research efforts are required and to attract new researchers with fresh points of view.

Author : J. Fünfschilling
Publisher : Springer Science & Business Media
Page : 282 pages
File Size : 41,93 MB
Release : 2012-12-06
Category : Science
ISBN : 9400908636

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Relaxation phenomena of excited molecular states are abundant in all nature. They mediate such key processes as photochemical reactions or even the pathways of ordinary chemical reactions. However, for a long time the main research in electronic relaxation processes was concerned with anorganic solids, in part because of their great technological importance (photography, semiconductors ... ) in part also because these compounds were the "workhorses" of the solid state physicists. In the last 30 years, there was a steadily increasing interest in organic molecular systems, first in molecular crystals and later in all forms of molecular solids (glasses, polymers, membranes, ... ). The present volume combines papers on quite different types of relaxation phenomena: the type of solid studied, the electronic states involved, the physical processes responsible for the relaxations are all different. Nevertheless, after reading this book, a more clear and complete picture of the phenomenon "relaxa tion" emerges that proves that this volume is more than just a collection of individual articles. The volume starts with the paper "Spin-lattice and spin-spin relaxation in photo-excited triplet states in molecular crystals" by Jan Schmidt. Even in these seemingly simple systems of isolated guest molecules in a single crystal host, the relaxation phenomena are quite involved and a very thorough investigation is necessary to find the key relaxation processes. The end of the article provides a bridge to the following paper: it treats interactions of two molecules (dimers), where resonant interactions become important and lead to new, characteristic relaxation processes.

Author : Thomas E. Creighton
Publisher :
Page : 160 pages
File Size : 38,90 MB
Release : 2011
Category : Chemical kinetics
ISBN : 9780956478139

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The subject of molecular biology continues to be the most exciting and dynamic area of science and is predicted to dominate the 21st century. Only by investigating biological phenomena at the molecular level is it possible to understand it in detail. This volume describes the most fundamental aspects of molecular biology.

Author : Abraham Nitzan
Publisher : Oxford University Press
Page : 743 pages
File Size : 32,23 MB
Release : 2006-04-06
Category : Science
ISBN : 9780198529798

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Graduate level textbook presenting some of the most fundamental processes that underlie physical, chemical and biological phenomena in complex condensed phase systems. Includes in-depth descriptions of relevant methodologies, and provides ample introductory material for readers of different backgrounds.

Author : David Davies
Publisher : Springer Science & Business Media
Page : 528 pages
File Size : 42,36 MB
Release : 2013-03-09
Category : Science
ISBN : 1468442201

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Structural biology is undergoing a revolution in both the sophistication of new biophysical methods and the complexity of problems in biomolecular structure and organization opened up for study. These changes are directly attributable to major advances in computer technology, computational methods, development of high intensity synchrotron radiation sources, new magnetic resonance methods, laser optical techniques, etc. Structure-function problems previously considered intractable may now be solved. As this area of specialisation continues to expand, there is a need to review the various physical methods currently being used and developed in struc tural molecular biology. At the same time that individual techniques and their applications become more specialized, the need for effect ive communication between investigators gains in imperative. It is vital to forge links among sub-disciplines and to emphasise the complementary nature of results observed by different biophysical methods. This publication contains the review lectures given at a meeting on "Current Methods in Structural Molecular Biology" spon sored by NATO as an Advanced Study Institute and by FEBS ~s Advanced Course No. 78. The aim of the meeting was to bring together, in a teaching environment, students and specialists in diverse biophysical methodologies with the specific purpose of exploring, questioning and critically assessing the present and future state of biological structure research. The scientific content of the interdisciplinary Study Institute centred around three interrelated aspects; biophysical methods and instrumentation, their application to biological structure problems, and derivation of structural information and insights.

Author :
Publisher : Academic Press
Page : 556 pages
File Size : 12,19 MB
Release : 1995-11-29
Category : Medical
ISBN : 0080581269

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Each volume of Advances in Pharmacology provides a rich collection of reviews on timely topics. Emphasis is placed on the molecular bases of drug action, both applied and experimental. This volume contains chapters that address diverse but interrelated areas pertaining to the chemistry, biochemistry, molecular biology, and pharmacology of nitric oxide in mammalian cells. The contents form a comprehensive treatise of factors influencing the control of nitric oxide production in various cell types. Presents comprehensive coverage of the chemical properties of nitric oxide and how they form the basis for the multifaceted biological actions for nitric oxide Contains the most current and detailed documentation of the properties and regulation of nitric oxide synthases Provides the most up-to-date review of inhalational nitric oxide therapy for treatment of respiratory dysfunction