Tag: Structure

Free Download Structure and Dynamics of Non-Rigid Molecular Systems By Alexander I. Boldyrev (auth.), Yves G. Smeyers (eds.)
1995 | 309 Pages | ISBN: 9401044643 | PDF | 25 MB
This volume contains a selection of scientific papers related to the structure and dynamics of non-rigid molecules. This frontline topic was born a few decades ago, when Longuet-Higgins proposed his famous theory of Molecular Symmetry Groups (Mol. Phys. 6, (1962) 457). Unfortunately, since this early paper, very few publications have been devoted to the study of non-rigid molecules. Let us mention some books which dedicate some chapters to them: Induced Representations in Crystals and Molecules, by S. L. Altmann, Academic ✅Publishers, 1977; Molecular Symmetry and Spectroscopy, by P. R. Bunker, Academic ✅Publishers, 1979; and finally Large Amplitude Motion in Molecules, Vols. I and II, by several authors, Springer Verlag, 1979. More recently an International Symposium on Non-Rigid Molecules was held in Paris, France, from 1-7 July 1982, the proceedings of which were published in the volume entitled Symmetries and Properties of Non-Rigid Molecules. A Comprehensive Survey, edited by J. Maruani et al., Elsevier, 1983. Finally, we should mention the very specialized work The Permutational Approach to Dynamic Stereochemistry, by J. Brocas et al., McGraw-Hill, 1983. The purpose of this book is to fill in this information on the structure and dynamics of non-rigid systems. To this aim, we have gathered a collection of recent papers written by the most qualified specialists in the world, covering a large field from van der Waals molecules to inorganic complexes and organic polyrotor molecules, as well as considering statistical and dynamic aspects.

Free Download Structure and Dynamics of Atoms and Molecules: Conceptual Trends By R. Lefebvre (auth.), J. L. Calais, E. S. Kryachko (eds.)
1995 | 262 Pages | ISBN: 9401041164 | PDF | 18 MB
The rivers run into the sea, yet the sea is not full Ecclesiastes What is quantum chemistry? The straightforward answer is that it is what quan tum chemists do. But it must be admitted, that in contrast to physicists and chemists, "quantum chemists" seem to be a rather ill-defined category of scientists. Quantum chemists are more or less physicists (basically theoreticians), more or less chemists, and by and large, computationists. But first and foremost, we, quantum chemists, are conscious beings. We may safely guess that quantum chemistry was one of the first areas in the natural sciences to lie on the boundaries of many disciplines. We may certainly claim that quantum chemists were the first to use computers for really large scale calculations. The scope of the problems which quantum chemistry wishes to answer and which, by its unique nature, only quantum chemistry can answer is growing daily. Retrospectively we may guess that many of those problems meet a daily need, or are say, technical in some sense. The rest are fundamental or conceptual. The daily life of most quantum chemists is usually filled with grasping the more or less technical problems. But it is at least as important to devote some time to the other kind of problems whose solution will open up new perspectives for both quantum chemistry itself and for the natural sciences in general.

Free Download Shock Waves @ Marseille IV: Shock Structure and Kinematics, Blast Waves and Detonations By L. F. Henderson (auth.), Professor Dr. Raymond Brun, Professor Dr. Lucien Z. Dumitrescu (eds.)
1995 | 505 Pages | ISBN: 364279534X | PDF | 23 MB
This volume is devoted to the problems directly connected to the propagation of shock waves, blast waves and detonations and their interaction with various ctructures, gaseous, liquid or solid. Shock focusing is the first subject whereas regular or Mach reflection processes, shock wave refraction and diffraction on diverse configurations such as wedge, cone, or corner, represent central themes for many following papers. The well-known problem of shock-interface interaction still constitutes an attractive subject and a number of papers are devoted to shock-jet, shock-vortex, and shock-layer interactions. Explosions and blast waves studies are well represented, and detonation phenomena in gaseous, solid or multiphasic media are largely treated. The kinetic structure of shock itself is also analyzed.Scientists working in the fields of shock-structure interaction will be interested by the number and level of corresponding papers, and engineers may be attracted by the multiple applied aspects of shock, blast and detonation propagation.

Free Download Quantum Mechanical Electronic Structure Calculations with Chemical Accuracy By James B. Anderson (auth.), Stephen R. Langhoff (eds.)
1995 | 449 Pages | ISBN: 9401040877 | PDF | 36 MB
The principal focus of this volume is to illustrate the level of accuracy currently achievable by ab initio quantum chemical calculations. While new developments in theory are discussed to some extent, the major emphasis is on a comparison of calculated properties with experiment. This focus is similar to the one taken in a book, Comparison of Ab Initio Quantum Chemistry with Experiment for SmallMolecules, edited by Rodney Bartlett (Reidel, 1984). However, the phenomenal improvement in both theoretical methods and computer architecture have made it possible to obtain accurate results for rather large molecular systems. This is perhaps best illustrated in this volume by the chapter entitled `Spectroscopy of Large Organic Molecules’ by Bjorn Roos and coworkers. For example, the electronic spectra of the nucleic acid base monomer structures shown on the front cover have been obtained using a fully correlated ab initio study. For researchers, teachers and students in chemistry and physics.

Free Download Hitler’s New Command Structure and the Road to Defeat: A Study through Field Marshals Kesselring, Rommel and Model
by Andrew Sangster and Pier Paolo Battistelli
English | 2024 | ISBN: 1036106942 | 256 Pages | True ePUB | 5.23 MB

Free Download Lipid Bilayers: Structure and Interactions By Dr. John Katsaras, Dr. Thomas Gutberlet (auth.)
2001 | 296 Pages | ISBN: 3642087027 | PDF | 8 MB
Lipid bilayers represent the fundamental model system for biological membranes. In recent years, we have been presented with a wealth of important insights into the structural and functional abilities of lipid bilayers with real possibilities in understanding the complex and varied behaviour of biological membranes. This volume is intended to give the researcher presently in the field and those wishing to enter the field a comprehensive overview into the current state of the art of lipid bilayer research. Detailed reviews are given on such topics as, lipid bilayer structure and dynamics, hydration of lipid bilayers, the role and behaviour of lipid bilayers on fusion and rupture, interaction of lipid bilayers and monolayers with small organic molecules and other additives such as proteins and finally, on the production and characterization of highly aligned bilayers under biologically relevant conditions. The book, besides being a reference, could be used in a graduate level courses with special emphasis in model membrane systems and physical techniques characterization.

Free Download Hidden in Plain Sight: The Social Structure of Irrelevance by Eviatar Zerubavel
English | April 10, 2015 | ISBN: 0199366608, 0199366616 | True EPUB/PDF | 214 pages | 8.8/16.8 MB
Many of us take for granted that what we perceive is a completely accurate representation of the world around us. Yet we have all had the experience of suddenly realizing that the keys or glasses that we had been looking for in vain were right in front of us the whole time. The capacity of our sense organs far exceeds our mental capabilities, and as such, looking at something does not guarantee that we will notice it. Our minds constantly prioritize and organize the information we take in, bringing certain things to the foreground, while letting others – that which we deem irrelevant – recede into the background. What ultimately determines what we perceive, and what we do not?

Free Download Ayokunle Olumuyiwa Omobowale, "The African Informal Economy: Structure, Dynamics, and Resilience "
English | ISBN: 9004692649 | 2024 | 308 pages | PDF | 4 MB
The informal sector is a vital sustainer of the African economy, employing more than 60% of sub-Saharan Africans. The book examines diverse segments of the informal sector, putting into consideration their structure, dynamics, resilience and gender issues.

Free Download Logic and Structure By Dirk van Dalen
2013 | 263 Pages | ISBN: 1447145577 | PDF | 2 MB
Dirk van Dalen’s popular textbook Logic and Structure, now in its fifth edition, provides a comprehensive introduction to the basics of classical and intuitionistic logic, model theory and Gödel’s famous incompleteness theorem. Propositional and predicate logic are presented in an easy-to-read style using Gentzen’s natural deduction. The book proceeds with some basic concepts and facts of model theory: a discussion on compactness, Skolem-Löwenheim, non-standard models and quantifier elimination. The discussion of classical logic is concluded with a concise exposition of second-order logic. In view of the growing recognition of constructive methods and principles, intuitionistic logic and Kripke semantics is carefully explored. A number of specific constructive features, such as apartness and equality, the Gödel translation, the disjunction and existence property are also included. The last chapter on Gödel’s first incompleteness theorem is self-contained and provides a systematic exposition of the necessary recursion theory. This new edition has been properly revised and contains a new section on ultra-products.

Free Download and Henry Chen Carolyn J. Hill, Harry J. Holzer, "Against the Tide: Household Structure, Opportunities, and Outcomes among White and Minority Youth"
English | 2009 | pages: 193 | ISBN: 0880993413 | PDF | 0,6 mb
Hill, Harry J. Holzer (both public policy, Georgetown U.), and Henry Chen (business, Harvard U.) test the theory that the high rates of crime and incarceration, teen pregnancy, and unmarried parenthood among black and Hispanic youth is caused by the increasing proportion of these children growing up in female-headed households. They do indeed find a correlation, and suggest public policy to promote healthy marriages, more positive non-custodial fatherhood, higher incomes for working single parents, better schooling or employment options, safer neighborhoods, and better child care and parenting.