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Author : David Roswell Hobart
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.:/5 (891 download)
Download or read book The Triplet State of the Chlorophyll Dimer written by David Roswell Hobart and published by . This book was released on 1981 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Investigation of the Triplet States of Chlorophylls. Progress Report, May 1, 1977--April 30, 1978. [Dimers; Bacteriochlorophyll]. PDF Online Free](https://books.google.com/books/content/images/frontcover/MqvOwQEACAAJ?fife=w200-h370)
Download or read book Investigation of the Triplet States of Chlorophylls. Progress Report, May 1, 1977--April 30, 1978. [Dimers; Bacteriochlorophyll]. written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Triplet state properties of solutions containing chlorophyll monomers and dimers have been determined by optically detected magnetic resonance (ODMR) spectroscopy. Using a simple exciton formalism, the triplet state zero-field splittings and intersystem crossing rate constants found for the chlorophyll dimers and for the isolated chlorophyll molecule are utilized to determine the orientation of the pigment molecules in the dimer. The triplet state results indicate that water-linked chlorophyll dimers in vitro form single plane-parallel structures. Similar calculations using monomeric measurements by ODMR on bacteriochlorophyll and zero-field splittings for in vivo preparations of photosynthetic bacteria indicate that the dimer structures in vivo may be more complex than those observed in solution.
Download or read book Investigation of the Triplet State of Chlorophylls. Technical Progress Report, May 1, 1978--April 30, 1979 written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The photoexcited triplet state properties of chlorophyll dimer systems in vitro were investigated by zero-field optically detected magnetic resonance (ODMR) spectroscopy at 2°K. Measurements of the triplet state zero-field splittings, overall triplet lifetimes, and individual spin sublevel intersystem crossing rate constants were obtained for solutions of chlorophyll a and zinc-substituted chlorophyll a and for the covalently linked dimeric derivative of pyrochlorophyllide a. The triplet state properties found for these systems are interpreted within the framework of the triplet exciton model to assess the applicability of the exciton approach in determining the geometry of chlorophyll aggregate systems and to evaluate structural features of chlorophyll systems proposed as models for in vivo chlorophyll.
Author : Hubertus J. den Blanken
Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.:/5 (35 download)
Download or read book Chlorophyll Triplet States written by Hubertus J. den Blanken and published by . This book was released on 1983 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Leo P. Vernon
Publisher : Academic Press
ISBN 13 : 1483267725
Total Pages : 696 pages
Book Rating : 4.4/5 (832 download)
Download or read book The Chlorophylls written by Leo P. Vernon and published by Academic Press. This book was released on 2014-06-28 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Chlorophylls reviews developments in study of chlorophylls, and at the same time summarizes the state of knowledge in the more established areas of the physics, chemistry, and biology of chlorophylls. The book is organized into four sections. The first section deals with the chlorophylls as chemical entities, and treats their isolation, analysis, chemistry, and synthesis. The second concerns chlorophylls in real and colloidal solution and in the solid state in vitro, and includes the effects of aggregation on visible, infrared, and NMR spectral properties. The third section treats the biosynthesis, organization, and properties of chlorophylls in the plant and bacterial cell, and the fourth is concerned with the photochemical and photophysical behavior of chlorophylls in vitro and in vivo. It is hoped that this work will help those investigating selected aspects of chlorophyll to keep abreast of other methods and approaches, and will provide the interested scientist with a modern, conceptually organized treatment of the subject.
Author : John Golbeck
Publisher : Springer
ISBN 13 : 1493911481
Total Pages : 465 pages
Book Rating : 4.4/5 (939 download)
Download or read book The Biophysics of Photosynthesis written by John Golbeck and published by Springer. This book was released on 2014-08-07 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume is intended as an introduction to the physical principles governing the main processes that occur in photosynthesis, with emphasis on the light reactions and electron transport chain. A unique feature of the photosynthetic apparatus is the fact that the molecular structures are known in detail for essentially all of its major components. The availability of this data has allowed their functions to be probed at a very fundamental level to discover the design principles that have guided evolution. Other volumes on photosynthesis have tended to focus on single components or on a specific set of biophysical techniques, and the authors’ goal is to provide new researchers with an introduction to the overall field of photosynthesis. The book is divided into sections, each dealing with one of the main physical processes in photosynthetic energy conversion. Each section has several chapters each describing the role that a basic physical property, such as charge or spin, plays in governing the process being discussed. The chapters proceed in an orderly fashion from a quantum mechanical description of early processes on an ultrafast timescale to a classical treatment of electron transfer and catalysis on a biochemical timescale culminating in evolutionary principles on a geological timescale.
Author :
Publisher :
ISBN 13 :
Total Pages : 748 pages
Book Rating : 4.3/5 (129 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1979 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 258 pages
Book Rating : 4.:/5 (3 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1978 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J.-D. Rochaix
Publisher : Springer Science & Business Media
ISBN 13 : 0306482045
Total Pages : 736 pages
Book Rating : 4.3/5 (64 download)
Download or read book The Molecular Biology of Chloroplasts and Mitochondria in Chlamydomonas written by J.-D. Rochaix and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a thorough overview of current research with the green alga Chlamydomonas on chloroplast and mitochondrial biogenesis and function, with an emphasis on the assembly and structure-function relationships of the constituents of the photosynthetic apparatus. Contributions emphasize the multidisciplinary nature of current research in photosynthesis, combining molecular genetics, biochemical, biophysical, and physiological approaches. The 36 articles address topics including nuclear genome organization; RNA stability and processing; splicing; translation; protein targeting in the chloroplast; photosystems; pigments; glycerolipids; the ATP synthase; and ferrodoxin and thioredoxin. Further contributions address new measurements methods for photosynthetic activity in vivo; starch biosynthesis; the responses of Chlamydomonas to various stress conditions; nitrogen assimilation; and mitochondrial genetics. Annotation copyrighted by Book News, Inc., Portland, OR
Author : P B Ayscough
Publisher : Royal Society of Chemistry
ISBN 13 : 1847553400
Total Pages : 450 pages
Book Rating : 4.8/5 (475 download)
Download or read book Electron Spin Resonance written by P B Ayscough and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Specialist Periodical Reports provide systematic and detailed review coverage of progress in the major areas of chemical research. Written by experts in their specialist fields the series creates a unique service for the active research chemist, supplying regular critical in-depth accounts of progress in particular areas of chemistry. For over 80 years the Royal Society of Chemistry and its predecessor, the Chemical Society, have been publishing reports charting developments in chemistry, which originally took the form of Annual Reports. However, by 1967 the whole spectrum of chemistry could no longer be contained within one volume and the series Specialist Periodical Reports was born. The Annual Reports themselves still existed but were divided into two, and subsequently three, volumes covering Inorganic, Organic and Physical Chemistry. For more general coverage of the highlights in chemistry they remain a 'must'. Since that time the SPR series has altered according to the fluctuating degree of activity in various fields of chemistry. Some titles have remained unchanged, while others have altered their emphasis along with their titles; some have been combined under a new name whereas others have had to be discontinued. The current list of Specialist Periodical Reports can be seen on the inside flap of this volume.
Author : A. B. Zahlan
Publisher : Cambridge University Press
ISBN 13 : 0521068924
Total Pages : 566 pages
Book Rating : 4.5/5 (21 download)
Download or read book The Triplet State written by A. B. Zahlan and published by Cambridge University Press. This book was released on 1967-11-02 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 1967 volume brought together knowledge concerning the triplet state and defined the problems in need of solution.
Author : R. V. Bensasson
Publisher : Elsevier
ISBN 13 : 1483189333
Total Pages : 245 pages
Book Rating : 4.4/5 (831 download)
Download or read book Flash Photolysis and Pulse Radiolysis written by R. V. Bensasson and published by Elsevier. This book was released on 2013-10-22 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flash Photolysis and Pulse Radiolysis: Contributions to the Chemistry of Biology and Medicine presents the interaction of radiation with biomolecules, which is either beneficial o deleterious to life. This book discusses the biochemical reactions that are not radiation-induced by selectively generating certain types of free radicals present in normal metabolic processes. Organized into nine chapters, this book begins with an overview of the principle of both pulse radiolysis and flash photolysis with photoelectric detection. This text then examines the applications of flash photolysis and pulse radiolysis to the chlorophylls, bile pigments, hemoglobin and myoglobin, and the porphyrins. Other chapters consider the carotenoids related to photosynthesis. This book discusses as well the role of proteins in nearly all biological processes, including enzymatic catalysis, muscular contraction, immune protection, mechanical support, and genetic information. The final chapter deals with the structures and importance of radiosensitizers. This book is a valuable resource for chemists and biochemists.
Author : Peter Gräber
Publisher : Birkhäuser
ISBN 13 : 3034889941
Total Pages : 554 pages
Book Rating : 4.0/5 (348 download)
Download or read book Bioenergetics written by Peter Gräber and published by Birkhäuser. This book was released on 2012-12-06 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioenergetics, the topic of volume 5 of this Series, is concerned with the energetics, the kinetics, and the mechanisms of energy conversion in biological systems. This phenomenon can be investigated on diffe rent levels of complexity. On a global level the role of biological pro cesses for the steady state of our enviroment is considered. At the physiological level, the relation between energy input and the physiolo gical state of an organism is of interest, while at the cellular level the biochemical pathways for degradation and synthesis of all relevant substrates is investigated. At present the majority of bioenergetic stu dies pertain to the molecular level. The processes in a cell are cataly zed by a large number of proteins called enzymes. The enzymes in volved in energy transduction can be considered as molecular ma chines which transform energy from one form into another, or transfer energy from one process to another. Living systems operate far from equilibrium and are open in the ther modynamic sense, i. e. they exchange energy and matter with the sur roundings. Chapter 1 presents the principles of non equilibrium thermo dynamics applied to biological systems. About 0. 05% of the energy from the sunlight which reaches the surface of the earth is used by plants and algae as well as some bacteria to synthesize organic com pounds, and thus supplies all organisms with the energy necessary for life.
Author : Bruce C Gilbert
Publisher : Royal Society of Chemistry
ISBN 13 : 1847553516
Total Pages : 338 pages
Book Rating : 4.8/5 (475 download)
Download or read book Electron Spin Resonance written by Bruce C Gilbert and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Specialist Periodical Reports provide systematic and detailed review coverage of progress in the major areas of chemical research. Written by experts in their specialist fields the series creates a unique service for the active research chemist, supplying regular critical in-depth accounts of progress in particular areas of chemistry. For over 80 years the Royal Society of Chemistry and its predecessor, the Chemical Society, have been publishing reports charting developments in chemistry, which originally took the form of Annual Reports. However, by 1967 the whole spectrum of chemistry could no longer be contained within one volume and the series Specialist Periodical Reports was born. The Annual Reports themselves still existed but were divided into two, and subsequently three, volumes covering Inorganic, Organic and Physical Chemistry. For more general coverage of the highlights in chemistry they remain a 'must'. Since that time the SPR series has altered according to the fluctuating degree of activity in various fields of chemistry. Some titles have remained unchanged, while others have altered their emphasis along with their titles; some have been combined under a new name whereas others have had to be discontinued. The current list of Specialist Periodical Reports can be seen on the inside flap of this volume.
Author : William A. Glass
Publisher : Springer Science & Business Media
ISBN 13 : 1468476270
Total Pages : 512 pages
Book Rating : 4.4/5 (684 download)
Download or read book Physical and Chemical Mechanisms in Molecular Radiation Biology written by William A. Glass and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fundamental understanding of the production of biological effects by ionizing radiation may well be one of the most important scientific objectives of mankind; such understanding could lead to the effective and safe utilization of the nuclear energy option. In addition, this knowledge will be of immense value in such diverse fields as radiation therapy and diagnosis and in the space program. To achieve the above stated objective, the U. S. Department of Energy (DOE) and its predecessors embarked upon a fundamental interdisciplinary research program some 35 years ago. A critical component of this program is the Radiological and Chemical Physics Program (RCPP). When the RCPP was established, there was very little basic knowledge in the fields of physics, chemistry, and biology that could be directly applied to understanding the effects of radiation on biological systems. Progress of the RCPP program in its first 15 years was documented in the proceedings of a conference held at Airlie, Virginia, in 1972. At this conference, it was clear that considerable progr:ess had been made in research on the physical and chemical processes in well-characterized systems that could be used to understand biological effects. During this period of time, most physical knowledge was obtained for the gas phase because the technology and instru mentation had not progressed to the point that measurements could be made in liquids more characteristic of biological materials.
Author : Lawrence Berliner
Publisher : Springer Science & Business Media
ISBN 13 : 1461565464
Total Pages : 315 pages
Book Rating : 4.4/5 (615 download)
Download or read book Biological Magnetic Resonance written by Lawrence Berliner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have now reached our sixth volume in a series which has somewhat unintentionally become an annual event. While we still intend to produce a volume only if a suitable number of excellent chapters in the forefront of biological magnetic resonance are available, our philosophy is to present a pedagogical yet critical description and review of selected topics in mag netic resonance of current interest to the community of biomedical scien tists. This volume fulfills our goals well. As always, we open the volume with a chapter which directly addresses an in vivo biological problem: Phil Bolton's presentation of new techniques in measuring 31 P NMR in cells. Lenkinski's chapter on the theory and applications of lanthanides in protein studies covers the details, highlights, and pitfalls of analysis of these com plexes in biochemical NMR. Reed and Markham summarize the interpreta tion of EPR spectra of manganese in terms of structure and function of proteins and enzymes. Dalton and colleagues describe the applications to biological problems of the relatively new capability of time domain ESR. Finally, we are pleased to offer a departure from mainstream magnetic resonance with the comprehensive and stimulating chapter by Gus Maki on the theory, instrumentation, and applications of optically detected magnetic resonance.
Author : G. E. W. Wolstenholme
Publisher : John Wiley & Sons
ISBN 13 : 0470718110
Total Pages : 192 pages
Book Rating : 4.4/5 (77 download)
Download or read book Chlorophyll Organization and Energy Transfer in Photosynthesis written by G. E. W. Wolstenholme and published by John Wiley & Sons. This book was released on 2009-09-16 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Novartis Foundation Series is a popular collection of the proceedings from Novartis Foundation Symposia, in which groups of leading scientists from a range of topics across biology, chemistry and medicine assembled to present papers and discuss results. The Novartis Foundation, originally known as the Ciba Foundation, is well known to scientists and clinicians around the world.
