Download or read book DICHROISME CIRCULAIRE MAGNETIQUE EN FLUORESCENCE X HAUTE RESOLUTION written by JEAN-JACQUES.. GALLET and published by . This book was released on 1997 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL EST UNE EXPLORATION DES INFORMATIONS QUE L'ON PEUT OBTENIR PAR L'ANALYSE A HAUTE RESOLUTION DE LA FLUORESCENCE X RESULTANT D'UNE EXCITATION PRODUITE PAR DU RAYONNEMENT SYNCHROTRON (LURE, ESRF). APRES DES RAPPELS SUR L'INTERACTION PHOTONS X-MATIERE, LES POSSIBILITES ATTENDUES THEORIQUEMENT LORSQUE LA FLUORESCENCE EST INDUITE PAR DES PHOTONS POLARISES OU EN RESONANCE SONT DISCUTEES. LES EVOLUTIONS DES SPECTROMETRES POUR TIRER PARTI DES SOURCES SYNCHROTRON MODERNES ET LES DISPOSITIFS D'AIMANTATION POUR LES MESURES DE DICHROISME CIRCULAIRE MAGNETIQUE (MCD) SONT DECRITS. LES PREMIERS RESULTATS DE MCD DANS L'EMISSION FE 3D 2P SONT PRESENTES ET COMPARES A DES EXPERIENCES ULTERIEURES. DES RESULTATS THEORIQUES LEUR SONT CONFRONTES POUR COMPRENDRE COMMENT LE MCD EST LIE A LA POLARISATION EN SPIN DES ETATS DE VALENCE DES ELEMENTS MAGNETIQUES. LA SELECTIVITE CHIMIQUE DU MCD EST ALORS UTILISEE POUR SONDER, POUR LA PREMIERE FOIS, LA STRUCTURE ELECTRONIQUE MAGNETIQUE DU RH DANS CO75RH25. L'EFFET DE L'HYBRIDATION SUR LE MAGNETISME EST ETUDIE PAR SUBSTITUTION DE CO (RH) PAR NI (PD). ENFIN, DES EXPERIENCES DE DIFFUSION X INELASTIQUE RESONANTE (RIXS) SUR FEF3 AU SEUIL FE 2P ET DU GADOLINIUM AU SEUIL GD 4D SONT PRESENTEES. ELLES ILLUSTRENT LES POSSIBILITES NOUVELLES OFFERTES PAR LE RIXS : L'ETAT INTERMEDIAIRE ATTEINT A PARTIR DE L'ETAT FONDAMENTAL A LA SUITE DE L'ABSORPTION DU PHOTON EST CONTROLE ET LA DESEXCITATION DE CET ETAT SE FAIT SOIT VERS L'ETAT FONDAMENTAL, SOIT VERS UN ETAT EXCITE, SOIT PAR UN EFFET RAMAN RESONANT. ON ACCEDE AINSI A DES CONFIGURATIONS QU'IL N'EST PAS POSSIBLE DE SONDER HORS RESONANCE, CE QUI EST D'UNE IMPORTANCE CRUCIALE POUR ETUDIER LES TRANSFERTS DE CHARGE ET LES EFFETS D'HYBRIDATION DANS LES SYSTEMES A ELECTRONS FORTEMENT CORRELES. LE RIXS PERMET AUSSI DE SEPARER DES VOIES D'EXCITATION DIFFERENTES : NOUS AVONS PU DISTINGUER LES CONTRIBUTIONS DIPOLAIRE ET QUADRUPOLAIRE AU SPECTRE D'ABSORPTION SM 2P EN ETUDIANT LE SPECTRE D'EMISSION 3D 2P.
Download or read book Circular Dichroism and Linear Dichroism written by Alison Rodger and published by Oxford University Press, USA. This book was released on 1997 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an introduction to all those who wish to use the complementary spectroscopic techniques of optical activity (circular dichroism, CD) and optical anisotropy (linear dichroism, LD) for the study of the structure of molecules and interactions between molecules in solution. It emphasizes these techniques and how to use them for both low and high molecular weight molecules. The book begins by describing the principles behind CD and LD and how these techniques can be used in the laboratory without using advanced maths or quantum mechanics. The next chapters describe how both techniques may be applied to the study of biological macromolecules and give a detailed description of how they may be used on small molecules to investigate molecular and electronic structure. The final part contains theoretical derivations of all the equations required for the applications described previously. Specific molecular examples are used to illustrate concepts and to show the reader how to use the techniques in chemical and biological systems. Circular Dichroism and Linear Dichroism is an easy guide to what a prospective user of CD needs to know and explains how LD is not merely an exotic technique only to be practiced by experienced spectroscopists, but may be routinely and usefully employed as an aid to molecular structure determination.
Download or read book Chiral Analysis written by P.L. Polavarapu and published by Elsevier. This book was released on 2018-05-30 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chiral Analysis: Advances in Spectroscopy, Chromatography and Emerging Methods, Second Edition covers an important area of analytical chemistry of relevance to a wide variety of scientific professionals, including chemistry graduate students, analytical chemists, organic chemists, professionals in the pharmaceutical industry, and others with an interest in chirality and chiral analysis. This thoroughly revised second edition covers several new, important areas of chiral analysis that have emerged since the first edition. Three of the new methods provide higher sensitivity than can be realized with the current methods and are expected to become mainstream applications: cavity based methods offer vastly higher sensitivity than conventional polarimetric methods, microwave chiral detection provides unsurpassed sensitivity for identifying diastereomers, and the rotating electric field method offers a competing new approach for the separation of enantiomers. Another topic, chirality in extraterrestrial life, has not been discussed in any other book and is important for understanding the origin of life. - Offers the only book to cover both spectroscopic and separation methods in a single volume - Provides an up-to-date and detailed review of the various techniques available, including new techniques that have emerged since the first edition - Includes contributions from a range of leading experts in the field, now edited by award-winning chirality researcher Prasad Polavarapu
Download or read book Chiroptical Spectroscopy written by Prasad L. Polavarapu and published by CRC Press. This book was released on 2016-10-03 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book details chiroptical spectroscopic methods: electronic circular dichroism (ECD), optical rotatory dispersion (ORD), vibrational circular dichroism (VCD), and vibrational Raman optical activity (VROA). For each technique, the text presents experimental methods for measurements and theoretical methods for analyzing the experimental data. It also includes a set of experiments that can be adopted for undergraduate teaching laboratories. Each chapter is written in an easy-to-follow format for novice readers, with necessary theoretical formalism in appendices for advanced readers.
Download or read book Optical Activity of Proteins and Other Macromolecules written by Bruno Jirgensons and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of circular dichroism (CD) to various problems involving con formation of proteins and other biopolymers is emphasized in this revised and enlarged second edition. The usefulness of CD and ORD in helping to solve structural prob lems is demonstrated by many examples, and the most essential data are tabulated. The author is sincerely grateful to the editors of the series Molecular Biology, Bio chemistry and Biophysics, especially to Professor GEORG F. SPRINGER, M.D., for their interest in this edition, as well as to the many reviewers for their constructive criticism of the first edition of this book. Our previously unpublished work reported in this second edition was supported in part by grants from the R. A. Welch Foundation (grant G-051) and U.S. Public Health Service (grant CA-01785). Houston, September 1973 B. JIRGENSONS Preface to the First Edition Great advances have been made in the application of physical methods in the study of the structure of proteins and other biological macromolecules. Optical rotatory dispersion has been successful in solving structural problems, and a vast amount of literature has accumulated on this subject. Several review articles appeared between 1961 and 1965, but significant progress has been made since 1965. Important new studies, especially on the Cotton effects in the far ultraviolet spectrum, have rendered many previous publications obsolete so that a concise monograph should be useful at this time.
Download or read book Circular Dichroism and the Conformational Analysis of Biomolecules written by G.D. Fasman and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 739 pages. Available in PDF, EPUB and Kindle. Book excerpt: ''Excellent and very timely....It will undoubtedly become a standard reference for the application of circular dichroism (CD) to biomolecules.'' --- Quarterly Review of Biology, March 1997 ''[T]estament to the book's utility is the fact that during the course of my review I had to 'rescue' it from the desks of graduate students on an almost daily basis. In summary, this is a great book.'' --- American Scientist ''Well documented chapters provide a very good insight into the problems surrounding the conformation of biomacromolecules...An indispensible source of information.'' --- Nahrung, 42(2), 1998 Renowned experts present the first state-of-the-art description of circular dichroism spectroscopy (CD). Chapters present in-depth discussions of the history of the field, the theory of CD for application to globular proteins, membrane proteins, peptides, nucleic acids and their interactions, carbohydrates, and instrumentation. Discussions also feature new techniques using synchrotron radiation, vibrational Raman optical activity, and vibrational CD. More than 250 illustrations supplement the text.
Download or read book Polarized Light and Polarization Vision in Animal Sciences written by Gábor Horváth and published by Springer. This book was released on 2014-10-30 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers advances made since the 2004 Springer volume “Polarized Light in Animal Vision” edited by Horvath and Varju, but also provides reviews and synopses of some areas. Part I examines polarization sensitivity across many animal taxa including vertebrates and invertebrates and details both terrestrial and aquatic life. Part II is devoted to the description of polarized light in nature and explores how the physics of light must be taken into account when understanding how polarized light is detected by the visual system. This includes underwater polarization due to scattering; polarization patterns reflected from freshwater bodies; polarization characteristics of forest canopies; normal and anomalous polarization patterns of the skies; skylight polarization transmitted through Snell’s window and both linearly and circularly polarized signals produced by terrestrial and aquatic animals. This Part also examines polarized “light pollution” induced by anthropogenic factors such as reflection off asphalt surfaces, glass panes, car bodies, and other man-made structures that are now known to form ecological traps for polarotactic insects. Part III surveys some of the practical applications of polarization vision including polarization-based traps for biting insects, ground-based polarimetric cloud detectors and an historical examination of the navigational abilities of Viking seafarers using the sky polarization compass. The deterrent qualities of ungulate pelage to polarization-sensitive biting insects is also examined in this section.
Download or read book Canadian Journal of Biochemistry written by and published by . This book was released on 1978 with total page 1324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Linear Dichroism and Circular Dichroism written by Bengt Nordén and published by Royal Society of Chemistry. This book was released on 2019-05-02 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an introduction to optical anisotropy (linear dichroism, LD) and optical activity (circular dichroism, CD) as techniques for the study of structures and interactions of molecules in solution. The book covers the use of these techniques for both small and large molecular systems with particular emphasis being placed on proteins and nucleic acids. CD is a well-established technique and this book aims to explain how it can be used simply and effectively for new entrants to the field as well as covering more advanced techniques for experts. LD is often seen as a rather exotic method intended only for experienced spectroscopists. This book demonstrates that it is an approach with real utility that may be used by both students and scientists from graduate level onwards to give simple answers, which are not available from any other technique, to structural and kinetic questions. Much of the emphasis is on flow orientation of samples in solution phase. The book first describes the techniques and the information they can provide; it then goes on to give specific details on how to actually implement them, including a wide range of examples showing how LD and CD can help with * protein and nucleic acid secondary structure elucidation; * analysis of the formation and rearrangements of fibrous proteins and membrane proteins; * identification of the absolute configuration of small molecules; * determination of the orientation of small molecules in anisotropic media; * assignment of transition moment polarizations; * investigation of binding strengths and geometries of ligand-macromolecule complexes; * 3-D structure determination from LD, molecular replacement and MD modeling. The advantages of combined LD/CD studies are also outlined with examples of DNA/drug complexes and protein insertion into membranes. Taken together the book represents a comprehensive text on the theory and application of LD and CD in the chemical and biological sciences.
Download or read book Chiral Analysis written by Kenneth W. Busch and published by Elsevier. This book was released on 2011-10-13 with total page 721 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chiral Analysis covers an important area of analytical chemistry of relevance to a wide variety of scientific professionals. The target audience is scientific professionals with an undergraduate background in chemistry or a related discipline, specifically organic chemists, researchers in drug discovery, pharmaceutical researchers involved with process analysis or combinatorial libraries, and graduate students in chemistry. Chapters have been written with the nonspecialist in mind so as to be self-contained.* Broad coverage - spectroscopic and separation methods covered in a single volume* Up-to-date and detailed review of the various techniques available and/or under development in this field* Contributions from leading experts in the field
Download or read book Motion Symmetry Spectroscopy of Chiral Nanostructures written by Johannes Sachs and published by Springer Nature. This book was released on 2022-01-03 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on complex shaped micro- and nanostructures for future biomedical and sensing applications that were investigated by both theory and experiments. The first part of the book explores rotation-translation coupling of artificial microswimmers at low Reynolds numbers. Usually corkscrew shapes, i.e chiral shapes, are considered in such experiments, due to their inspiration from nature. However, the analysis of the relevant symmetries shows that achiral objects can also be propulsive, which is experimentally demonstrated for the first time. In the second part, a new single-particle spectroscopy technique was developed and the role of symmetry in such measurements is carefully examined. Spectra stemming from one individual nanoparticle that is moving freely in bulk solution, away from a surface, and only due to Brownian motion, are presented. On that basis, the rotationally averaged chiroptical spectrum of a single nanoparticle is measured - a novel observable that has not been accessible before.
Download or read book Vibrational Optical Activity written by Laurence A. Nafie and published by John Wiley & Sons. This book was released on 2011-07-12 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique book stands as the only comprehensive introduction to vibrational optical activity (VOA) and is the first single book that serves as a complete reference for this relatively new, but increasingly important area of molecular spectroscopy. Key features: A single-source reference on this topic that introduces, describes the background and foundation of this area of spectroscopy. Serves as a guide on how to use it to carry out applications with relevant problem solving. Depth and breadth of the subject is presented in a logical, complete and progressive fashion. Although intended as an introductory text, this book provides in depth coverage of this topic relevant to both students and professionals by taking the reader from basic theory through to practical and instrumental approaches.
Download or read book Multifunctional Oxide Heterostructures written by Evgeny Y. Tsymbal and published by OUP Oxford. This book was released on 2012-08-30 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to the rapidly developing field of oxide thin-films and heterostructures. Oxide materials combined with atomic-scale precision in a heterostructure exhibit an abundance of macroscopic physical properties involving the strong coupling between the electronic, spin, and structural degrees of freedom, and the interplay between magnetism, ferroelectricity, and conductivity. Recent advances in thin-film deposition and characterization techniques made possible the experimental realization of such oxide heterostructures, promising novel functionalities and device concepts. The book consists of chapters on some of the key innovations in the field over recent years, including strongly correlated oxide heterostructures, magnetoelectric coupling and multiferroic materials, thermoelectric phenomena, and two-dimensional electron gases at oxide interfaces. The book covers the core principles, describes experimental approaches to fabricate and characterize oxide heterostructures, demonstrates new functional properties of these materials, and provides an overview of novel applications.
Download or read book A German English Dictionary for Chemists written by Austin M 1876-1956 Patterson and published by Scholar Select. This book was released on 2015-08-08 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Comprehensive Chirality written by and published by Newnes. This book was released on 2012-12-31 with total page 5635 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although many books exist on the subject of chiral chemistry, they only briefly cover chiral synthesis and analysis as a minor part of a larger work, to date there are none that pull together the background information and latest advances in one comprehensive reference work. Comprehensive Chirality provides a complete overview of the field, and includes chiral research relevant to synthesis, analytic chemistry, catalysis, and pharmaceuticals. The individual chapters in each of the 9 volumes provide an in depth review and collection of references on definition, technology, applications and a guide/links to the related literature. Whether in an Academic or Corporate setting, these chapters will form an invaluable resource for advanced students/researchers new to an area and those who need further background or answers to a particular problem, particularly in the development of drugs. Chirality research today is a central theme in chemistry and biology and is growing in importance across a number of disciplinary boundaries. These studies do not always share a unique identifying factor or subject themselves to clear and concise definitions. This work unites the different areas of research and allows anyone working or researching in chiral chemistry to navigate through the most essential concepts with ease, saving them time and vastly improving their understanding. The field of chirality counts several journals that are directly and indirectly concerned with the field. There is no reference work that encompasses the entire field and unites the different areas of research through deep foundational reviews. Comprehensive Chirality fills this vacuum, and can be considered the definitive work. It will help users apply context to the diverse journal literature offering and aid them in identifying areas for further research and/or for solving problems. Chief Editors, Hisashi Yamamoto (University of Chicago) and Erick Carreira (ETH Zürich) have assembled an impressive, world-class team of Volume Editors and Contributing Authors. Each chapter has been painstakingly reviewed and checked for consistent high quality. The result is an authoritative overview which ties the literature together and provides the user with a reliable background information and citation resource.
Download or read book Nanomagnetism and Spintronics written by Teruya Shinjo and published by Elsevier. This book was released on 2013-10-07 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concise and accessible chapters of Nanomagnetism and Spintronics, Second Edition, cover the most recent research in areas of spin-current generation, spin-calorimetric effect, voltage effects on magnetic properties, spin-injection phenomena, giant magnetoresistance (GMR), and tunnel magnetoresistance (TMR). Spintronics is a cutting-edge area in the field of magnetism that studies the interplay of magnetism and transport phenomena, demonstrating how electrons not only have charge but also spin. This second edition provides the background to understand this novel physical phenomenon and focuses on the most recent developments and research relating to spintronics. This exciting new edition is an essential resource for graduate students, researchers, and professionals in industry who want to understand the concepts of spintronics, and keep up with recent research, all in one volume. - Provides a concise, thorough evaluation of current research - Surveys the important findings up to 2012 - Examines the future of devices and the importance of spin current
Download or read book Electron Spin Resonance ESR Applications in Organic and Bioorganic Materials written by B. Catoire and published by Springer. This book was released on 1992-02-27 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Publication partially sponsored by MRT (French Ministry of Research and Technology."
