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Quantum Electrodynamics Of Photosynthesis
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Book Synopsis Quantum Electrodynamics of Photosynthesis by : Artur Braun
Download or read book Quantum Electrodynamics of Photosynthesis written by Artur Braun and published by Walter de Gruyter GmbH & Co KG. This book was released on 2020-10-12 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book uses an array of different approaches to describe photosynthesis, ranging from the subjectivity of human perception to the mathematical rigour of quantum electrodynamics. This interdisciplinary work draws from fields as diverse as astronomy, agriculture, classical and quantum optics, and biology in order to explain the working principles of photosynthesis in plants and cyanobacteria.
Book Synopsis Quantum Electrodynamics of Photosynthesis by : Artur Braun
Download or read book Quantum Electrodynamics of Photosynthesis written by Artur Braun and published by Walter de Gruyter GmbH & Co KG. This book was released on 2020-10-12 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book uses an array of different approaches to describe photosynthesis, ranging from the subjectivity of human perception to the mathematical rigour of quantum electrodynamics. This interdisciplinary work draws from fields as diverse as astronomy, agriculture, classical and quantum optics, and biology in order to explain the working principles of photosynthesis in plants and cyanobacteria.
Book Synopsis Modelling Complexes for Natural and Artificial Photosynthesis by Quantum Mechanics Simulations by : Fabio Pitari (t.d.-)
Download or read book Modelling Complexes for Natural and Artificial Photosynthesis by Quantum Mechanics Simulations written by Fabio Pitari (t.d.-) and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Photophysics and Quantum Mechanics of Cryptophyte Photosynthesis by : Alexander Bastiaan Doust
Download or read book The Photophysics and Quantum Mechanics of Cryptophyte Photosynthesis written by Alexander Bastiaan Doust and published by . This book was released on 2006 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is a comprehensive study of the optical properties and the critical role of phycobiliproteins in the absorption of green light for photosynthesis in cryptophyte algae (Rhodomonas CS24 and Chroomonas CCMP270). Investigations of two different isolated proteins, phycoerythrin 545 and phycocyanin 645, are described. In addition, the intact algae are investigated to elucidate the workings of these antennae proteins within the machinery of the organism. The crystal structures of these proteins are known to 0.97 and 1.4 A resolution, respectively. These data confirm that the proteins each bind eight open-chain tetrapyrrole phycobilin chromophores, which, in these proteins, are phycoerythrobilin, dihydrobiliverdin, phycocyanobilin, and mesobiliverdin. These bilins are covalently attached to the protein backbone by cysteine bonds. The extended conformation, conjugation length, protonation state and electronic couplings to other bilins or protein residues all play an important role in ensuring that these pigments function efficiently as photosynthetic light harvesters. Chapter 1 of this thesis outlines the evolution of phycobiliproteins and cryptophyte algae, as well as describing in detail the structures of both phycoerythrin 545 and phycocyanin 645. Chapter 2 provides a background to all the experimental and computational techniques that are employed, as well as the data analysis and global and target modeling of the ultrafast data. Chapter 3 describes the results and discussion of all the work on phycoerythrin 545, with Chapter 4 describing the subsequent experiments that reveal the role of phycoerythrin 545 in the overall photosynthetic energy transfer pathways in intact algae. Chapter 5 is an up-to-date evaluation of phycoerythrin 645, where structural data is combined with steady state and ultrafast heterodyne detected transient grating to generate a non-quantitative model of function. Chapter 6 provides a combined conclusion to all the work that has been performed and presented in this thesis. These phycobilins are the focus of most of the work. Steady-state spectroscopies, including polarization anisotropy and circular dichroism, are combined with ultrafast transient grating and transient absorption spectroscopies and subsequent global analyses to reveal a detailed picture of energy transfer within the proteins. In addition, energy transfer from phycoerythrin 545 to chlorophyll-containing light harvesting complexes and photosystems in intact algae is investigated by steady-state spectroscopy and time-resolved fluorescence. Quantum mechanical computational methods are employed to calculate phycobilin excited states, and generate transition density cubes which are used to accurately determine the electronic coupling between the chromophores in phycoerythrin 545 and phycocyanin 645. Modelling of the phycobilin lineshape function has allowed the precise estimation of the energy transfer times among the bilins in phycoerythrin 545 by way of the generalized Forster theory as well as reproducing the absorption and circular dichroism spectra. Kinetic models for exciton dynamics in both proteins are presented. The roles of the central dimer bilins and the final energy transfer step between the two red-most DBV bilins in phycoerythrin 545 are discussed in detail.
Book Synopsis Perspectives in Photosynthesis by : Joshua Jortner
Download or read book Perspectives in Photosynthesis written by Joshua Jortner 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: The Twenty-Second Jerusalem Symposium reflected the high standards of these distinguished scientific meetings, which convene once a year at the Israel Academy of Sciences and Humanities in Jerusalem to discuss a specific topic in the broad area of quantum chemistry and 'biochemistry. The topic at this year's Jerusalem Symposium was Perspectives in Photosynthesis, which constitutes a truly interdisciplinary subject of central interest to biophysicists, and biologists. chemists The main theme of the Symposium was built around a conceptual framework for the acquisition, storage and useful disposal of energy in photosynthetic reaction centres. Emphasis was placed on the elucidation of primary charge separation processes in photosynthesis and their exploration within the framework of the electron transfer theory, on the interrelationship between structural data, inter actions and electron transfer kinetics, and on the role of protein dynamics in primary processes in photosynthesis. The interdisciplinary nature of these research areas was deliberated by intensive and extensive interactions between scientists from different disciplines and between theory and experiment. This volume provides a record of the invited lectures at the Symposium.
Book Synopsis Quantum Technologies by : Rainer Müller
Download or read book Quantum Technologies written by Rainer Müller and published by Walter de Gruyter GmbH & Co KG. This book was released on 2023-11-06 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis At the Edge of Uncertainty by : Michael Brooks
Download or read book At the Edge of Uncertainty written by Michael Brooks and published by Profile Books. This book was released on 2014-06-26 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: The atom. The Big Bang. DNA. Natural selection. All ideas that have revolutionised science - and that were dismissed out of hand when they first appeared. The surprises haven't stopped: here, Michael Brooks, bestselling author of 13 Things that Don't Make Sense, investigates the new wave of unexpected insights that are shaping the future of scientific discovery. Through eleven radical new insights, Brooks takes us to the extreme frontiers of what we understand about the world. He journeys from the observations that might rewrite our history of the universe, through the novel biology behind our will to live, and on to the physiological root of consciousness. Along the way, he examines how the underrepresentation of women in clinical trials means that many of the drugs we use are less effective on women than men and more likely to have adverse effects, explores how merging humans with other species might provide a solution to the shortage of organ donors, and finds out if there is such a thing as the will to live. When we think about science, we often think of iron-clad facts. But today more than ever, our unshakeable truths have been shaken apart. As Michael Brooks reveals, the best science is about open-mindedness, imagination and a love of mind-boggling adventures at the edge of uncertainty.
Book Synopsis The Maximum Quantum Yield Controversy by : Kärin Nickelsen
Download or read book The Maximum Quantum Yield Controversy written by Kärin Nickelsen and published by BoD – Books on Demand. This book was released on 2011 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whoever turns to the history of photosynthesis research in the twentieth century is soon confronted with the fact that one of its most exciting periods, the years from 1920 to 1960, was in large part overshadowed by a bitter controversy in which many of the leading scientists in the field were involved. It centered on the question, how efficient the process of photosynthesis was. This book attempts a reconstruction of the course of the controversy, based on previously unknown archival sources, and analyzes the arguments brought forward by the two parties.
Book Synopsis The Quantum Physics of the Bacterial Photosynthetic Unit by : Thorsten Ritz
Download or read book The Quantum Physics of the Bacterial Photosynthetic Unit written by Thorsten Ritz and published by . This book was released on 2001 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Autotrophic Biorefinery by : Robert Kourist
Download or read book The Autotrophic Biorefinery written by Robert Kourist and published by Walter de Gruyter GmbH & Co KG. This book was released on 2021-10-25 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: The depletion of fossil resources and an ever-growing human population create an increasing demand for the development of sustainable processes for the utilization of renewable resources. As autotrophic microorganisms offer numerous metabolic pathways for the fixation of carbon dioxide and the metabolic utilization of light, electricity and inorganic energy donors, they are expected to play a pivotal role in an emerging carbon neutral society. This text-book presents the metabolic principles of autotrophy and current efforts for their utilization in biotechnology, including photoautotrophic, chemolithoautotrophic and electroautotrophic organisms. It outlines how modern molecular biology and process engineering create technologies that allow to use industrial off-gases and inorganic energy for the synthesis of bio-based plastics, materials and other chemical products. The text-book is ideally suited for students in advanced graduate and master courses and offers a reference for PhD students, engineers, chemists, biologists and all with an interests in biotechnology and renewable resources.
Book Synopsis Handbook of Photosynthesis by : Mohammad Pessarakli
Download or read book Handbook of Photosynthesis written by Mohammad Pessarakli and published by CRC Press. This book was released on 2024-07-31 with total page 827 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fourth Edition of the Handbook of Photosynthesis offers a unique and comprehensive collection of topics in the field of photosynthesis, serving as an invaluable resource in this field. With contributions from 95 scientists and experts from over 20 countries, this volume has been divided into 13 parts, each serving independently to facilitate the understanding of the material. FEATURES Presents comprehensive information on photosynthesis under normal and environmental stress conditions Covers artificial photosynthesis and its future-related issues Contains 25 new chapters and 18 extensively revised and expanded chapters Includes three new sections: Influence of Nanoparticles on Photosynthesis; Protection of Photosynthesis System and Stress Alleviation Strategies by Photosynthates Manipulations and Photosynthesis Efficiency in Plants under Multiple Abiotic and Biotic Stressors; and Artificial Photosynthesis and Its Future Contains numerous tables, figures, illustrations, and case studies to facilitate the comprehension of the material as well as thousands of index words A primary resource in its field, Handbook of Photosynthesis, Fourth Edition, provides a comprehensive resource for researchers, academics, and for university courses, with the information as a valuable source to plan, implement, and evaluate strategies for dealing with photosynthesis issues.
Download or read book Luminescence written by Ratnesh Tiwari and published by Walter de Gruyter GmbH & Co KG. This book was released on 2021-12-20 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phosphors are often consisting of transition-metal compounds or rare-earth compounds, with the most common application being displays and fluorescent light. This book will guide the reader through the latest developments in thermo-, electro-, mechano- and bioluminescence of rare earth phosphors and crystals. Also, the effect of doping will be discussed.
Book Synopsis Understanding and Manipulating Electronic Quantum Coherence in Photosynthetic Light-harvesting by : Stephan Hoyer
Download or read book Understanding and Manipulating Electronic Quantum Coherence in Photosynthetic Light-harvesting written by Stephan Hoyer and published by . This book was released on 2013 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrafast spectroscopy experiments show that photosynthetic systems can preserve quantum beats in the process of electronic energy transfer between pigments, even at room temperature. But what does this discovery imply for biology - and for quantum mechanics? This dissertation examines photosynthesis through the tools of quantum information science. We evaluate to what extent photosynthesis can be thought of as a type of quantum technology, and consider how we can apply experimental tools widely used for quantum technologies (state tomography and coherent control) to photosynthesis. Throughout, we use the Fenna-Matthews-Olson (FMO) complex of greens sulfur bacteria as a model photosynthetic pigment-protein complex. In Part I, we evaluate two mechanisms for the possible biological relevance of quantum coherent motion. First, we consider the extent to which dynamics in light-harvesting systems exhibit the quantum speedups characteristic of quantum algorithms and quantum walks. Second, we demonstrate a ratchet effect in electronic energy transfer enabled by partially coherent dynamics. To do so, we build a new model of energy transfer between weakly coupled light-harvesting complexes to understand how electronic coherence arises under natural conditions. In Part II, we present proposals for experimental probes of light harvesting dynamics with ultrafast spectroscopy. We show how the signal from pump-probe spectroscopy can be formally inverted to determine the excited state electronic density matrix. Finally, we examine the feasiblity of coherent control experiments on light-harvesting systems, and provide two realistic targets feasible with present-day technology.
Book Synopsis The Biophysics of Photosynthesis by : John Golbeck
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.
Book Synopsis Ultrafast Quantum Effects and Vibrational Dynamics in Organic and Biological Systems by : Sarah Elizabeth Morgan
Download or read book Ultrafast Quantum Effects and Vibrational Dynamics in Organic and Biological Systems written by Sarah Elizabeth Morgan and published by Springer. This book was released on 2017-08-01 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis focuses on theoretical analysis of the sophisticated ultrafast optical experiments that probe the crucial first few picoseconds of quantum light harvesting, making an important contribution to quantum biology, an exciting new field at the intersection of condensed matter, physical chemistry and biology. It provides new insights into the role of vibrational dynamics during singlet fission of organic pentacene thin films, and targeting the importance of vibrational dynamics in the design of nanoscale organic light harvesting devices, it also develops a new wavelet analysis technique to probe vibronic dynamics in time-resolved nonlinear optical experiments. Lastly, the thesis explores the theory of how non-linear “breather” vibrations are excited and propagate in the disordered nanostructures of photosynthetic proteins.
Book Synopsis Photocatalysis by : Suresh C. Pillai
Download or read book Photocatalysis written by Suresh C. Pillai and published by Walter de Gruyter GmbH & Co KG. This book was released on 2021-08-23 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a concise and up-to-date introduction to the topic of photocatalysis. It covers the fundamentals of photocatalysis, design of photoreactors and modelling and simulations for photoreaction. Also, industrial applications such as hydrogen production, water disinfection, degradation of air pollutants, pesticides and pharmaceuticals are described.
Book Synopsis Anoxygenic Photosynthetic Bacteria by : R.E. Blankenship
Download or read book Anoxygenic Photosynthetic Bacteria written by R.E. Blankenship and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 1333 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anoxygenic Photosynthetic Bacteria is a comprehensive volume describing all aspects of non-oxygen-evolving photosynthetic bacteria. The 62 chapters are organized into themes of: Taxonomy, physiology and ecology; Molecular structure of pigments and cofactors; Membrane and cell wall structure: Antenna structure and function; Reaction center structure and electron/proton pathways; Cyclic electron transfer; Metabolic processes; Genetics; Regulation of gene expression, and applications. The chapters have all been written by leading experts and present in detail the current understanding of these versatile microorganisms. The book is intended for use by advanced undergraduate and graduate students and senior researchers in the areas of microbiology, genetics, biochemistry, biophysics and biotechnology.
