Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Physical And Direct Methods In Crystallography
Download Physical And Direct Methods In Crystallography full books in PDF, epub, and Kindle. Read online Physical And Direct Methods In Crystallography ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Theory and Practice of Direct Methods in Crystallography by : M. F. C. Ladd
Download or read book Theory and Practice of Direct Methods in Crystallography written by M. F. C. Ladd and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Direct methods of crystal structure determination are usually associated with techniques in which phases for a set of structure factors are determined from the corresponding experimental amplitudes by probabilistic calcula tions. It is thus implied that such ab initio phase calculations do not require a knowledge of atomic positions, and this basis distinguishes direct methods from other techniques for structure determination. An acceptably wider interpretation of the term direct methods leads to other important applica tions involving, inter alia, the use of heavy atoms, resolution-limited phase data for large molecules, rotation functions, and Fourier series. These topics are discussed in the later chapters of this book. Although some earlier theoretical investigations were made by Harker and Kaspar, direct methods may be considered to have begun around the year 1950. Important landmarks in the development of the subject include the book by Hauptmann and Karle, The Centrosymmetric Crystal (1953), the definitive paper by Karle and Karle in Acta Crystallographica (1966), and the recent (1978) sophisticated program package MULTAN 78 produced mainly by Germain, Main, and Woolfson. Woolfson's book, Direct Methods in Crystallography, was published in 1961, but because of the rapid progress in direct methods, much of it soon became outmoded. It is interesting to note that direct methods nearly came into being many years earlier. Certainly the E2 relationship was used implicitly by Lonsdale in 1928 in determining the crystal structure of hexamethylbenzene.
Book Synopsis Physical and Direct Methods in Crystallography by : Adam Charles Ralph
Download or read book Physical and Direct Methods in Crystallography written by Adam Charles Ralph and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theory and Practice of Direct Methods in Crystallography by : 3Island Press
Download or read book Theory and Practice of Direct Methods in Crystallography written by 3Island Press and published by . This book was released on 1980-01-31 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Direct Methods in Crystallography by : Carmelo Giacovazzo
Download or read book Direct Methods in Crystallography written by Carmelo Giacovazzo and published by . This book was released on 1980 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Direct Methods, Macromolecular Crystallography And Crystallographic Statistics - Proceedings Of Winter School by : H Schenk
Download or read book Direct Methods, Macromolecular Crystallography And Crystallographic Statistics - Proceedings Of Winter School written by H Schenk and published by World Scientific. This book was released on 1987-02-01 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vasopressin is a hormone which has an increasingly important profile. Not only does it play a physiologically significant role in renal water regulation but it also has other renal actions and plays a role in overall cardiovascular control. Even more interesting is the recent growing interest in its potential effects on the brain, notably its influence on specific behaviours.This monograph about the polypeptide vasopressin covers all aspects relating to the production, control of release, and actions of this molecule within the body, including its roles as a hormone and as a central neurotransmitter. A consideration of the evolution of the molecule across the species and a brief historical perspective are also included. Clinical conditions associated with hypo- and hyper-production states are considered together with aspects of treatment, in addition to other clinical correlates./a
Book Synopsis Direct Phasing in Crystallography by : Carmelo Giacovazzo
Download or read book Direct Phasing in Crystallography written by Carmelo Giacovazzo and published by Oxford University Press on Demand. This book was released on 1998 with total page 767 pages. Available in PDF, EPUB and Kindle. Book excerpt: Direct methods are, at present, applied to a large variety of cases: X-ray, neutron or electron data; single crystal and powder data; small molecules and macromolecules. While direct methods solved in practice the phase problem for small molecules, their application to macromolecules is recentand still undergoing strong development. The fundamentals of the methods are described: in particular it is shown how the methods can be optimized for powder, neutron or electron data, and how they can be integrated with isomorphous replacement, molecular replacement and anomalous dispersiontechniques. Maximum Entropy methods are also described and discussed. Sets of test structures are used to verify, throughout the various chapters, the mathematical techniques there described and to provide practical examples of applications. This book will appeal to a wide variety of readers -offering both a comprehensive description of direct methods in crystallography and an invaluable reference tool. The first three chapters can be considered as an introduction to the field, with sufficient material to constitute a university course and for allowing the expert use of most directmethods programs. Subsequent chapters are aimed at graduate students and working crystallographers. Basic results are described and discussed in the main body of the text, while the appendices compliment these with in depth mathematical details. The quoted literature is extremely wide and theinterested reader can find suggestions for future work and further reading throughout the book.
Book Synopsis Direct Methods of Solving Crystal Structures by : Henk Schenk
Download or read book Direct Methods of Solving Crystal Structures written by Henk Schenk and published by Springer. This book was released on 1991 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 18th course of the International School of Crystallography, held April 1990, in Erice, Italy. Annotation copyrighted by Book News, Inc., Portland, OR
Book Synopsis Physical and Non-Physical Methods of Solving Crystal Structures by : Michael M. Woolfson
Download or read book Physical and Non-Physical Methods of Solving Crystal Structures written by Michael M. Woolfson and published by Cambridge University Press. This book was released on 1995-06-15 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 1995 book is a complete guide to all crystallographic techniques, for professionals analysing crystal structure.
Book Synopsis Electron Crystallography by : Thomas E. Weirich
Download or read book Electron Crystallography written by Thomas E. Weirich and published by Springer Science & Business Media. This book was released on 2006-08-18 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last decade we have been witness to several exciting achievements in electron crystallography. This includes structural and charge density studies on organic molecules complicated inorganic and metallic materials in the amorphous, nano-, meso- and quasi-crystalline state and also development of new software, tailor-made for the special needs of electron crystallography. Moreover, these developments have been accompanied by a now available new generation of computer controlled electron microscopes equipped with high-coherent field-emission sources, cryo-specimen holders, ultra-fast CCD cameras, imaging plates, energy filters and even correctors for electron optical distortions. Thus, a fast and semi-automatic data acquisition from small sample areas, similar to what we today know from imaging plates diffraction systems in X-ray crystallography, can be envisioned for the very near future. This progress clearly shows that the contribution of electron crystallography is quite unique, as it enables to reveal the intimate structure of samples with high accuracy but on much smaller samples than have ever been investigated by X-ray diffraction. As a tribute to these tremendous recent achievements, this NATO Advanced Study Institute was devoted to the novel approaches of electron crystallography for structure determination of nanosized materials.
Book Synopsis Uniting Electron Crystallography and Powder Diffraction by : Ute Kolb
Download or read book Uniting Electron Crystallography and Powder Diffraction written by Ute Kolb and published by Springer. This book was released on 2012-12-20 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: The polycrystalline and nanocrystalline states play an increasingly important role in exploiting the properties of materials, encompassing applications as diverse as pharmaceuticals, catalysts, solar cells and energy storage. A knowledge of the three-dimensional atomic and molecular structure of materials is essential for understanding and controlling their properties, yet traditional single-crystal X-ray diffraction methods lose their power when only polycrystalline and nanocrystalline samples are available. It is here that powder diffraction and single-crystal electron diffraction techniques take over, substantially extending the range of applicability of the crystallographic principles of structure determination. This volume, a collection of teaching contributions presented at the Crystallographic Course in Erice in 2011, clearly describes the fundamentals and the state-of-the-art of powder diffraction and electron diffraction methods in materials characterisation, encompassing a diverse range of disciplines and materials stretching from archeometry to zeolites. As such, it is a comprehensive and valuable resource for those wishing to gain an understanding of the broad applicability of these two rapidly developing fields.
Book Synopsis Electron Crystallography by : D. Dorset
Download or read book Electron Crystallography written by D. Dorset and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: The re-emergent field of quantitative electron crystallography is described by some of its most eminent practitioners. They describe the theoretical framework for electron scattering, specimen preparation, experimental techniques for optimum data collection, the methodology of structure analysis and refinement, and a range of applications to inorganic materials (including minerals), linear polymers, small organic molecules (including those used in nonlinear optical devices), incommensurately modulated structures (including superconductors), alloys, and integral membrane proteins. The connection between electron crystallography and X-ray crystallography is clearly defined, especially in the utilisation of the latest methods for direct determination of crystallographic phases, as well as the unique role of image analysis of high-resolution electron micrographs for phase determination. Even the aspect of multiple beam dynamic diffraction (once dreaded because it was thought to preclude ab initio analysis) is considered as a beneficial aid for symmetry determination as well as the elucidation of crystallographic phases, and as a criterion for monitoring the progress of structure refinement. Whereas other texts have hitherto preferentially dealt with the analysis of electron diffraction and image data from thin organic materials, this work discusses - with considerable optimism - the prospects of looking at `harder' materials, composed of heavier atoms. Audience: Could be used with profit as a graduate-level course on electron crystallography. Researchers in the area will find a statement of current progress in the field.
Book Synopsis International Tables for Crystallography, Volume B by : Uri Shmueli
Download or read book International Tables for Crystallography, Volume B written by Uri Shmueli and published by Springer Science & Business Media. This book was released on 2008-08-27 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: International Tables for Crystallography are no longer available for purchase from Springer. For further information please contact Wiley Inc. (follow the link on the right hand side of this page). Volume B presents accounts of the numerous aspects of reciprocal space in crystallographic research. After an introductory chapter, Part 1 presents the reader with an account of structure-factor formalisms, an extensive treatment of the theory, algorithms and crystallographic applications of Fourier methods, and fundamental as well as advanced treatments of symmetry in reciprocal space. In Part 2, these general accounts are followed by detailed expositions of crystallographic statistics, the theory of direct methods, Patterson techniques, isomorphous replacement and anomalous scattering, and treatments of the role of electron microscopy and diffraction in crystal structure determination, including applications of direct methods to electron crystallography. Part 3 deals with applications of reciprocal space to molecular geometry and `best'-plane calculations, and contains a treatment of the principles of molecular graphics and modelling and their applications. A convergence-acceleration method of importance in the computation of approximate lattice sums is presented and the part concludes with a discussion of the Ewald method. Part 4 contains treatments of various diffuse-scattering phenomena arising from crystal dynamics, disorder and low dimensionality (liquid crystals), and an exposition of the underlying theories and/or experimental evidence. Polymer crystallography and reciprocal-space images of aperiodic crystals are also treated. Part 5 of the volume contains introductory treatments of the theory of the interaction of radiation with matter (dynamical theory) as applied to X-ray, electron and neutron diffraction techniques. The simplified trigonometric expressions for the structure factors in the 230 three-dimensional space groups, which appeared in Volume I of International Tables for X-ray Crystallography, are now given in Appendix 1.4.3 to Chapter 1.4 of this volume. Volume B is a vital addition to the library of scientists engaged in crystal structure determination, crystallographic computing, crystal physics and other fields of crystallographic research. Graduate students specializing in crystallography will find much material suitable for self-study and a rich source of references to the relevant literature.
Book Synopsis Direct Methods for Solving Macromolecular Structures by : S. Fortier
Download or read book Direct Methods for Solving Macromolecular Structures written by S. Fortier and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book of the proceedings of the 1997 NATO Advanced Study Institute (ASI) on Direct Methods for Solving Macromolecular Structures was assembled from the lecturers' contributions and represents a comprehensive and in-depth overview of crystallographic structure determination methods for macromolecules. While having a focus based on the direct methods, the Institute adopted an inclusive and broad perspective. Thus, both direct and experimental phasing techniques are presented in this book, highlighting their complementarities and synergies. As weil, methodologies spanning the full crystallographic image reconstruction process - from low resolution envelope definition to high resolution atomic refinement- are discussed. The first part of the book introduces the array of tools currently used in structure determination, whether originating from a mathematical, computational or experimental framework. This section of the book displays the variety and ingenuity of old and new phasing approaches developed to solve increasingly complex structures. Some of the contributions focus on recent developments and/or implementations that have given older approaches a new life. A case in point is the re-implementation of Buerger's superposition approach, which is now solving protein structures. Another beautiful example is found in the introduction to the traditional multiple isomorphous replacement approach where new techniques, such as site-directed mutagenesis and the use of inert gases in the preparation of heavy atom derivatives, are described. Equally impressive are the presentations of newer approaches, which take advantage of advances on the experimental front (e. g.
Book Synopsis Theories and Techniques of Crystal Structure Determination by : Uri Shmueli
Download or read book Theories and Techniques of Crystal Structure Determination written by Uri Shmueli and published by Oxford University Press. This book was released on 2007-06-07 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is a detailed but concise exposition of crystal structure determination at a graduate level. Discussions range from geometrical principles of crystallography, through relevant experimental methods, to techniques of reliable and accurate determination of crystal structures.
Book Synopsis Direct Methods in Crystallography by : M. M. Woolfson
Download or read book Direct Methods in Crystallography written by M. M. Woolfson and published by . This book was released on 1961 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Introduction to Direct Methods by : Hendrik Schenk
Download or read book An Introduction to Direct Methods written by Hendrik Schenk and published by . This book was released on 1984 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Crystal Structure Analysis by : Jenny Pickworth Glusker
Download or read book Crystal Structure Analysis written by Jenny Pickworth Glusker and published by Oxford University Press. This book was released on 2010-05-27 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to explain why molecular structure can be determined by single-crystal diffraction of X rays. It is not an account of the practical procedural details, but rather an account of the underlying physical principles, and the kinds of experiments and methods of handling the experimental data that are used.
