Elsevier bv jul 1997 (4 Ergebnisse)

Buch. Zustand: Neu. Neuware - The objective of Volume II is to show how asymptotic methods, with the thickness as the small parameter, indeed provide a powerful means of justifying two-dimensional plate theories. More specifically, without any recourse to any a priori assumptions of a geometrical or mechanical nature, it is shown that in the linear case, the three-dimensional displacements, once properly scaled, converge in H1 towards a limit that satisfies the well-known two-dimensional equations of the linear Kirchhoff-Love theory; the convergence of stress is also established.In the nonlinear case, again after ad hoc scalings have been performed, it is shown that the leading term of a formal asymptotic expansion of the three-dimensional solution satisfies well-known two-dimensional equations, such as those of the nonlinear Kirchhoff-Love theory, or the von Kármán equations. Special attention is also given to the first convergence result obtained in this case, which leads to two-dimensional large deformation, frame-indifferent, nonlinear membrane theories. It is also demonstrated that asymptotic methods can likewise be used for justifying other lower-dimensional equations of elastic shallow shells, and the coupled pluri-dimensional equations of elastic multi-structures, i.e., structures with junctions. In each case, the existence, uniqueness or multiplicity, and regularity of solutions to the limit equations obtained in this fashion are also studied.…

Buch. Zustand: Neu. Neuware - The Editors invited selected authors who had participated in or observed the explosive development of biochemistry and molecular biology particularly in the second half of this century to record their personal recollections of the times and circumstances in which they did their work. The authors were given a completely free rein with respect to both content and style and the editors have made no attempt to impose any sort of uniformity in the chapters. Each reflects the flavour of the personality of the author.The contributors to this volume encompass a wide variety of experiences in many different countries and in very different fields of biochemistry. Some have worked close to the laboratory bench throughout their scientific life and are continuing to do so. Others have been closely engaged in organisational matters, both nationally and internationally. All mention incidents in their own career or have observed those in others that will be of interest to future historians who will record and assess the period in which our contributors lived and worked. It was an extremely exciting time for life sciences.…

Buch. Zustand: Neu. Neuware - This book presents a comprehensive and up to date account of the chemotherapy of parasitic diseases, both human and veterinary. The book starts with an overview of parasitic diseases. The body of the book is divided into two parts: antihelminthic drugs, and antiprotozoal drugs. Both parts start with chapters highlighting the 'biochemical targets' available for chemotherapeutic interference. Individual chapters deal with one chemical class of compounds and describe their origin, structure-activity relationship, mode of action, and methods of synthesis and their status both in clinical and veterinary practice. The book will be useful to a wide spectrum of readers: students embarking on a research career in parasitic chemotherapy, clinicians (and veterinarians) and clinical pharmacologists desiring detailed information about the drugs currently in use, and pharmaceutical technologists wanting to update their knowledge of the methods of manufacture.…

Buch. Zustand: Neu. Neuware - Volume 10 of the Handbook is composed of topical review articles written by leading authorities. In each of these articles an extensive description is given in graphical as well as in tabular form, much emphasis being placed on the discussion of the experimental material in the framework of physics, chemistry and materials science.Of all the new superconducting materials investigated having a more than three times highter transition temperature, the cuprates are the most prominent. Although originally intended as novel superconducting compounds, these materials have opened a new field of magnetism that permits detailed studies of the propagation of magnetic order as a function of separation and crystallographic orientation as well as studies of the interplay of strain and magnetic properties. Chapter one presents a detailed account of acheivements in this field.Further chapters report on the progress being made in research areas that have been dealt with in previous volumes of the Handbook. These include the group of soft magnetic materials in which supplementary results dealing with nanocrystalline alloys are highlighted; the magnetic properties of intermetallic compounds in which rare earth elements are combined with nonmagnetic elements; progress in the development in hard magnetic materials, with the emphasis on novel developments in the manufacturing routes and the physical principles on which these new developments are based.…