Humana apr 2012 (150 risultati)

Taschenbuch. Condizione: Neu. Neuware - Although some nations, such as Japan, have invested in aquaculture research and developed major aquaculture industries, the opportunities for similar devel opment in the United States remain largely unnoticed. In a typical recent year the United States, which claims 20% of the world's marine fisheries resources, imported seafood worth $4. 8 billion and exported $l. 3 billion. In addition to the $3. 5 billion deficit in food-fish, was another $2. 7 billion deficit for nonedible fishery products. Next to oil, fishery products constituted the second highest drain on the United States balance of payments and accounts for a significant portion of the foreign trade deficit. Furthermore, fish consumption has been increasing in North America. In response to the demand for fishery products, aquaculture managers not only have the opportunity to realize economic profit, but in doing so can make an important contribution to reducing the national debt, providing employment, and enhancing our diet. This book might be considered a farm management text for those in aquaculture. It is intended to provide an introduction to aquaculture principles and an introduction to management, including business and people management, microeconomics, and the concepts of efficiency and productivity. I hope it will bridge the gap between conservationists, the academic community, and commer cial culturists. Abundant references should enable the reader to quickly access literature on most topics germane to the management of culture systems.…

Taschenbuch. Condizione: Neu. Neuware - The 55th Nobel Symposium entitled 'Genetics of the Immune Response' took place in Saltsjobaden, Sweden, June 15 - 17, 1982. The topic was selected for several reasons, such as the rapid progress in the genetic analysis of immunoglobulin and MHC genes and the elucidation of the mechanism of switch to different immunoglobulin classes and subclasses. The genetic advances formed a basis for discussions of problems relating to regulation of T cell subsets, mechanisms of activation and regulation of B cell differentiation and an analysis of the network hypothesis. The format of the symposium was arranged so as to include two sessions in the morning and two in the afternoon. Each session was introduced by one speaker, followed by free discussion. The intro ductory lectures are included in the proceedings. The participants summarized their contributions to the discussion in written form. In addi tion to the closed sessions, there was one open session at the Karolinska Institute with lectures by Drs. L. Hood, C. Milstein, D. Baltimore, J. Klein and B. Benacerraf, which are not included in these procee din gs. The symposium was sponsored by the Nobel Foundation and its Nobel Symposium Committee through grants from the Tercentenary Fund of the Bank of Sweden and the Knut & Alice Wallenberg Foundation. The Swedish Medical Research Council, the Swedish Cancer Society and the Swedish Ministry of Education and Cultural Affairs also made contri butions.…

Taschenbuch. Condizione: Neu. Neuware - It has long been suspected, and recently confirmed, that there is an etiologic relationship between several viruses and naturally occurring neoplasias. Virus precursors in the form of nucleic acids or antigens have consistently been associated with certain neoplasias. However, the role of these virus-specified precursors in etiology remains obscure. Recent studies of virus-associated neo plasias have led to advances in molecular techniques, which have yielded increas ingly sensitive assays for detection of virus-specific nucleic acids, and which have enabled the disruption of virus particles without concomitant loss in antigenicity of the components. These procedures have, in turn, resulted in molecular probes that allow more definitive evaluation of the host response to its virus and to the tumor cell with which the virus or its precursors are associated. Evaluations of the immune response and status of the host have provided important informa tion about carcinogenesis and the tools for seroepidemiological studies of a variety of cancers. These seroepidemiological studies have demonstrated that several human cancers, e. g. , Burkitt's lymphoma and nasopharyngeal carcinoma, are probably virus-induced, and that antibodies that are diagnostic and prog nostic for these diseases are detectable. The conclusion that feline leukemia is a disease transmitted horizontally by a virus resulted primarily from immunologi cal experiments.…

Taschenbuch. Condizione: Neu. Neuware - Statistics is of ever-increasing importance in Science and Technology and this book presents the essentials of the subject in a form suitable either as the basis of a course of lectures or to be read and/or used on its own. It assumes very little in the way of mathematical knowledge-just the ability to substitute numerically in a few simple formulae. However, some mathematical proofs are outlined or given in full to illustrate the derivation of the subject; these can be omitted without loss of understanding. The book does aim at making clear the scope and nature of those essential tests and methods that a scientist or technologist is likely to need; to this end each chapter has been divided into sections with their own subheadings and some effort has been made to make the text unambiguous (if any reader finds a misleading point anywhere I hope he will write to me about it). Also with this aim in view, the equality of probability to proportion of population is stated early, then the normal distribution and the taking of samples is discussed. This occupies the first five chapters. With the principles of these chapters understood, the student can immediately learn the significance tests of Chapter 6 and, if he needs it, the analysis of variance of Chapter 7. For some scientists this will be most of what they need. Howcver, they will be in a position to read and/or use the remaining chapters without undue difficulty.…

Taschenbuch. Condizione: Neu. Neuware - This NATO Advanced Study Institute centered on large-scale molecular systems: Quantum mechanics, although providing a general framework for the description of matter, is not easily applicable to many concrete systems of interest; classical statistical methods, on the other hand, allow only a partial picture of the behaviour of large systems. The aim of the ASI was to present both aspects of the subject matter and to foster interaction between the scientists working in these important areas of theoretical physics and theoretical chemistry. The quantum-mechanical part was mostly based on the operator-algebraic formulation of quantum mechanics and comprised quantum statistics of infinite systems with special em phasis on macroscopic observables, equilibrium conditions, irreversibility on the one hand, symmetry breaking for molecules in the radiation field and macroscopic quantum phenomena in the theory of superconductivity (BCS-theory) on the other hand. In addition, phase-space methods for many-body systems were also presented. Statistical physics was the main topic in the other lectures of the School; much emphasis was put on the statistical features of macros copic ('large') systems, the lectures dealt with mass and energy transport im polymers, in gels and in microemulsions, with aggregation and growth phenomena, with relaxation in complex, correlated systems, with conduction and optical properties of polymers, and with the means of describing disordered systems, above all fractals and related hierarchical models. …

Taschenbuch. Condizione: Neu. Neuware - In The Diabetic Foot: Medical and Surgical Management, a distinguished panel of clinicians-many practicing at the famous Joslin-Beth Israel Deaconess Foot Center-illuminate the successful new multidisciplinary approach now clearly required for the successful treatment of this medical problem. Drawing on the experiences of diabetologists, podiatrists, vascular surgeons, infectious disease specialists, orthotists, plastic and orthopedic surgeons, the book clearly describes established techniques known to be effective. Also highlighted are the many emerging treatments that will affect diabetic foot care in the years ahead, including a new understanding of wound-healing pathophysiology and the recent introduction of growth factors and living skin equivalents. Diabetic foot disease afflicts nearly two million Americans and is the main cause of hospitalization for the diabetic patient, representing a substantial financial burden on both the health-care system and society-at-large. In The Diabetic Foot: Medical and Surgical Management, a distinguished panel of clinicians-many practicing at the famous Joslin-Beth Israel Deaconess Foot Center-illuminate the successful new multidisciplinary approach now clearly required for the successful treatment of this medical problem. Drawing on the experiences of diabetologists, podiatrists, vascular surgeons, infectious disease specialists, orthotists, and plastic and orthopedic surgeons, the book clearly describes established techniques known to be effective. Also highlighted are the many emerging treatments that will affect diabetic foot care in the years ahead, including a new understanding of wound-healing pathophysiology and the recent introduction of growth factors and living skin equivalents. Throughout, the emphasis is on the prevention of foot ulceration and its management using a multidisciplinary approach. Comprehensive and highly practical, The Diabetic Foot: Medical and Surgical Management will help all members of the diabetic foot treatment team not only to more fully understand the relevant pathophysiology, but also to prepare state-of-the-art treatment plans for diabetic patients with foot problems or at risk for developing them.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Primarily, the aim of this book is to provide a reference work for senior students and research workers engaged in the synthetic aspects of chemistry. The various classes of compounds under discussion provide useful interme diates for the synthesis of numerous nitrogen-containing derivatives. Imidoyl halides are also intermediates in several classical name reactions, such as the Gattermann, Houben-Hoesch, and Vilsmeier-Haack syntheses of aldehydes and ketones, the Beckmann rearrangement, and the v. Braun degradation. Some imidoyl halides have shown interesting agricultural activities, and the generation of highly reactive species (ketenimines, nitrile oxides, nitrile imides, carbodiimides, etc.) from imidoyl halides has contributed to the study of polar cycloaddition reactions. To enable researchers to utilize this chemistry without consulting the original references, I have included a number of selected working examples. This procedure will facilitate the transformation of written information into well designed experiments, especially since part of the cited literature is not readily available. The book is organized around classes of imidoyl halides, with synthesis and chemistry discussed in an orderly fashion. The physical properties of the known imidoyl halides are listed in tables, and I have attempted to draw attention to the more recent literature. The one or two references provided for each compound represent those which best describe its physical constants and synthesis. 252 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The purpose of the World Psychiatric Association is to coordinate the activities of its Member Societies on a wor1d-~ide scale and to advance enquiry into the etiology, pathology, and treatment of mental illness. To further this purpose, the Association organizes mono- or mu1tithematic Regional Symposia in different parts of the world twice a year, and World Congresses dealing with all individual fields of psychiatry once every five or six years. Between these meetings the continuation of the Association's scientific work is assured through the activities of its specialty sections, each covering an important field of psychiatry. The programs of the World Congresses reflect on the one hand the intention to present the coordinating functions of the Association and on the other to open a broad platform for a free exchange of views. Thus, the VII World Congress of Psychiatry, held in Vienna from July 11 to 16, 1983, was composed of two types of scientific events - those structured by the Association and those left to the initiative of the participants. The first type comprised Plenary Sessions, planned by the Scientific Program Committee, and Section Symposia, organized by the WPA sections; the second embraced Free Symposia, free papers, video sessions, and poster presentations prepared by the participants. Altogether, 10 Plenary Sessions, 52 Section Symposia, and 105 Free Symposia took place, and 78 free papers and poster sessions and 10 video sessions were held. 556 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This is the first book in the series that is being called The Reviews of Infrared and Millimeter Waves. The series will contain the manuscripts of invited papers from conferences on this subject. This first book contains some of the invited papers from the XXth General Assembly of the Union-Radio-Scientifique Internationale, Washington, August, 1981. We were asked by the URSI Cornmittee to organize a two day symposium on millimeter and submillimeter waves This required the difficult choice of five topics which turned out to be (1) Ultra-low Noise Millimeter Wave Rec~ivers (Detectors and Mixers), (2) Free Electron Maser and Gyrotron, (3) Measurements of Power and Noise Power, (4) Complex Dielectric Properties of Solids and Liquids, and (5) Radioastronomy. We have not yet collected all the m . . nuscripts and perhaps we never shall because the tine-. consur. J. ing effort required to prepare a comprehensive review nanuscript works a hardship on research scientists who are already overburdened. 've are particularly grateful, therefore, to the authors lVho have worked so hard to contribute the chapters to this book. The first four chapters contibute to the timely topic of detectors, nixers and re ceivers. These authors: Tucker, Feldman, Rudner, Okamura, Hogg and their well-known colleagues have been among the leaders in this exciting emerging field for the past few years. The fifth chapter by Sakai and Genzel is the most comprehensive treatment of the metal mesh filter science that can be found in one place. 384 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The MIT International Nutrition Planning Program (INP) was initiated in the fall of 1972 with a grant from the Rockefeller Foundation, later supplemented by funds from USAID under the 2110 Program. Con ceived as a multidisciplinary undertaking, the INP was a joint effort of the Department of Nutrition and Food Science and the Center for Inter national Studies at MIT that also included representatives of the Depart ments of Economics, Political Science, Urban Studies, Humanities (Anthropology), and Civil Engineering. It has been successful in attract ing graduate students and conducting research on various international food and nutrition problems, including the design of intervention pro grams. A condition of the original grant from the Rockefeller Foundation was the organization of a meeting to summarize and evaluate the prog ress of the program. It was ultimately decided that the best approach would be a workshop that would attempt to assess what had been learned about the implementation of food and nutrition policies since the start of the INP. Out of concern for food and nutrition policy issues, the World Hunger Programme of The United Nations University (UNU) and the Ford Foundation also agreed to cosponsor the workshop. 576 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This conference has attempted to achieve a balance in the presentation of papers on the application of current methods to established problem areas and on the introduction of new methods and applications. It has recognized the relevance of papers on basic physics and chemistry and on the total interaction of x-r~s with matter. In order to achieve sufficient depth, a topic is chosen each year for special emphasis. This conference had as its central theme, 'The Interactions and Applications of Low Energy X-R~s.' Those who were invited as speakers and as contributors to this volume are among the outstanding workers in the application of low energy x-ray and the associated photo-Auger electron interactions. These include A. K. Baird and W. L. Baun on Light Element Analysis and Long Wavelength Instrumentation; J. E. Hollid~, D. W. Fischer, R. J. Liefeld and D. J. Nagel on Bonding and Valence State; H. Friedman and W. P. Reidy on X-R~ Astronomy; and R. Nordberg on Photo-Auger Electron Spectroscopy. Upon reading over the papers as presented here, one cannot help but be impressed by the steady, dynamic growth and expansion of the field of applied x-ray analysis, beginning about thirty years ago with quantitative elementary analysis and extending to the present time with dramatic and exciting applications to x-r~ astronomy. It has been most appropriate and indeed a privilege to have Dr. Herbert Friedman as a speaker and contributor to this volume. 696 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The first demonstration of the existence of a vitamin and the full recognition of this fact are often attributed to the work of McCollum, who found that a sub stance in butterfat and cod-liver oil was necessary for growth and health of ani mals fed purified diets. It became obvious that an organic substance present in microconcentrations was vital to growth and reproduction of animals. Following the coining of the word vitamine by Funk, McCollum named this fat-soluble sub stance vitamin A. We can, therefore, state that vitamin A was certainly one of the first known vitamins, yet its function and the function of the other fat-soluble vitamins had remained largely unknown until recent years. However, there has been an explosion of investigation and new information in this field, which had remained quiescent for at least two or three decades. It is now obvious that the fat-soluble vitamins function quite differently from their water-soluble counter parts. We have learned that vitamin D functions by virtue of its being converted in the kidney to a hormone that functions to regulate calcium and phosphorus metabolism. This new endocrine system is in the process of being elucidated in detail, and in addition, the medical use of these hormonal forms of vitamin D in the treatment of a variety of metabolic bone diseases has excited the medical com munity. 300 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This book is devoted to the fundamentals of the theoretical analysis of phase equilibrium diagrams. Phase diagrams are known to play an important role in met allurgy and materials science, chemical engineering, petroleum refining, etc. A study of phase diagrams can help in choosing the optimal composition of mixtures and alloys and in determining the appropriate conditions for their thermal treatment, as well as in determining the efficiency of such processes as distillation, rectifica tion, zone refining, and controlled crystallization for the separation and purifi(;ation of materials. In spite of this, the extensive thermodynamic information which can be extracted from phase diagrams has scarcely been utilized until recently, due to the of the analysis of phase equilibria. comparatively poorly developed foundations We have attempted to present a general picture of the thermodynamic analysis of phase diagrams, and to demonstrate the broad possibilities of this approach in elucidating the nature of the interaction of the components and the structure of the phases. This book summarizes research carried out at the Moscow Institute of Electronic Engineering over the past decade. Extensive summaries of published data are also included. In the course of our work we have made extensive use of modern computing methods, which allowed solutions to be obtained to many problems. 324 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This volume on intersensory perception and sensory integration is the second volume of the series, Perception and Perceptual Development: A Critical Review Series. The topic of the volume is timely, for in recent years, many investigators have noted that information about any natural event is obtained by a perceiver from a variety of sources. Such an observation immediately leads to the question of how this information is synthesized and organized. Of course, the implication that there are several discrete input channels that must be processed has come under immediate attack by researchers such as the Gibsons. They find it extremely artificial to regard natural information as being cut up and requiring cementing. Nevertheless, the possibility that during ontogene sis, perception involves the integration of separate information has attracted the attention of scholars concerned with both normal and abnormal development. In the case of normal development, a lively controversy has arisen between those who believe perceptual develop ment goes from integration toward differentiation and those who hold the opposite view. In the case of abnormal psychological development such as learning disabilities, many workers have suggested that percep tual integration is at fault. In thinking about the issues raised in this volume, we are particularly indebted to our former teachers and colleagues: Eleanor and James Gibson, T. A. Ryan, Robert B. MacLeod, and Jerome Bruner. We are pleased to acknowledge the secretarial help of Karen Weeks in the preparation of this volume. 440 pp. Englisch. …

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -There are more things in heaven and earth, Horatio, Than are dreamt of in your philosophy. Hamlet There exists a fairly large number of textbooks concerned with spectrochemical analysis. Most of them deal with practical applications and instrumental factors, and provide the reader with the knowledge indispensable for conducting analyses with the help of emission spectra. Practical knowledge and experience are indeed important requisites for success fully exploiting the spectrochemical method in the field of analytical chemistry. As the method is essentially empirical, it is, in principle, a simple one, provided that we succeed in exciting all samples in an identical manner; for then, relative intensities of spectral lines can serve as the 'weights' by which to measure amounts of elements. However, creating the required constancy of excitation conditions is hampered by the very nature of the sample, whose composition profoundly influences the excitation characteristics of the light source. Therefore, spectrochemists are inevitably engaged in all the processes that determine the radiation output of the light source for a given sample. Dealing, with this ensemble of processes, that is, with 'excitation' in the widest sense, is the object of this book (cf. 1. 1). The reader will seek in vain for enumerations of practical rules that would tell him how to tackle a particular analysis problem. 400 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The story of mammalian neural transplantation really begins eighty-one years ago. In Chicago in December of 1903, a 34-year-old physician, Elizabeth Hopkins Dunn, working as a research assistant in neurology, initiated a series of experiments to examine the ability of neonatal rat cerebral tissue to survive transplantation into the brain of matched littermates. Out of 46 attempts, four clearly successful grafts were identified. The publication of Dunn's results in 1917, the first credible report to demonstrate the feasibility of mammalian CNS transplants, generated little interest. In fact, the next significant experiment in this field did not appear until 1930. The field continued to grow slowly and quietly as investigators gradually realized the value of neural trans plantation to study problems of development and plasticity in the mammalian nervous system. With the discovery in 1979 that grafted neurons were capable of appropriate and functional interactions with the host brain, interest in neural transplantation esca lated sharply. The extraordinary opportunities created by using functional neural trans plants in investigating basic issues in neurobiology, as well as the clinical implications, excited both scientists and the public. The popularity of neural transplantation has been growing rapidly in the past five years and shows no signs of abating. The present volume was designed to meet two needs created by the rapid growth of this subdiscipline of neurobiology. The first was to provide a thorough review of the experimental foundations of neural transplantation. 488 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The investigation of the physical properties of matter has progressed so much during the last hundred years that today physics is divided into a large group of special branches, which are often very distant from each other. These branches arise because of the vast extent of the science itself, and are distinguished by the particular area studied, the method of investigation and so on. An independent and important branch that has developed recently is the physics of thin films. This deals with systems which have only one common property, namely, that one of their dimensions is very small, though all other physical properties of such systems may be different, as well as methods of investigating them. Usually, we investigate the physical characteristics of three-dimensional bodies. Their characteristic prop::!rties are often related to a unit volume, i.e. it is assumed that they are volume-independent. This assumption is legitimate as long as the dimensions are 'normal', i.e. more or less within macroscopic limits; but as soon as one dimension becomes so small that there is a considerable increase in a surface-to-volume ratio, that assumption is no longer valid. 260 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Pentachlorophenol and its salts are used as biocides. Although they are used mainly for preservation and treatment of wood, their antimicrobial, antifungal, herbicidal, insecticidal and molluscicidal properties led to a widespread application of PCP formulations. Bevenue and Beckman reviewed the literature up to 1967 on the chemistry, toxicology and environmental residues of PCP (Residue Rev. , 19: 83- 134, 1967). Significant advances in analytical methodology, recurrent incidents of mortalities of non-target organisms exposed to PCP, regulatory actions pertaining to PCP usage in countries such as Japan and Sweden, and detection of the ubiquitous distribution of PCP in the environment, added to the wealth of recent literature on pentachlorophenol. In spite of the usage of PCP as an antimicrobial agent in drilling and packer fluids during oil-drilling operations in the marine environment, little is known of the toxicity of PCP to marine and estuarine organisms. The purpose of this volume is to present up-to-date information (including a number of new studies on marine and estuarine organisms) on the chemistry, pharmacology and environmental toxicology of pentachlorophenol. This volume is a collection of papers presented at an international symposium sponsored by the U. S. Environmental Protection Agency and The University of West Florida, held at Pensacola Beach, Florida, June 27-29,1977. I am grateful to Norman L. 420 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -It is indeed a pleasure to welcome all of you to this Inter national Symposium on the Neurohumoral coding of Brain Function. Many of you have undertaken a very long trip in order to cross swords with some of the most fascinating issues in all of the neurosciences. Of particular satisfaction in this instance is the geographical representation of the sciences with individuals here from Europe and the Americas - South, Central and North. As we do battle, so to speak, with each of the questions raised during the next several days, we should remember that the problems faced by each of our fields are exceptionally difficult. In a way, this difficulty stems from two related facts: (1) we are trying to construct a conceptual bridgework between one disci pline and another; and (2) the distance between the research fabric of any two of these disciplines is vast. It would probably not be unfair to say that a large number of scientists feel relatively contented in remaining within the bound aries of their own area of specialization. In a sense, that is certainly justifiable today primarily because of the intensity of such specialization. However, the participants of this symposium, who reflect some of the major thrusts in biochemistry, physiology, pharmacology and psychology, have in the main chosen to explore the pathways that cross the interface between mind and body - be tween behavior and brain. 496 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This book, which originated in the presentations of a symposium sponsored by the Universidad Nacional Autonoma de Mexico, held in Mexico City on April 14-16, 1980, represents an attempt to analyze some of the most relevant aspects of synaptic transmission. This topic was chosen on the strong belief that the progress of the neurosciences depends to a great extent on the understanding of the basic mechanisms of synaptic function. Rather than selecting only a specific approach or speciality, the book intends to cover this field in a multi disciplinary way. This means that neurochemical, neurophysiological and morphological studies are mingled throughout the book, which hopefully will help the reader to integrate the different faces of the same problem. Across the book the presynaptic component of synaptic transmission and its regulation is stressed much more than the postsynaptic phenomena. Although this might be a limitation, it has the advantage of increasing the focus of the book on a series of events which are gaining importance and interest every day. 436 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Surface science and colloid science are preeminently experimental subjects. They constitute complementary aspects of a field which has been notably active since World War II; there is every reason to expect that the level of activity will continue to rise in the coming decades, so it is timely to review certain experimental methods of surface and colloid science as they exist, and to evaluate and refine those methods. This volume, and others that will follow, are principally concerned with experimental methods. The working scientist needs access to the latest techniques, of course. He also needs to learn of the potentialities of recently developed techniques which he may not have been aware of. Equally important, or perhaps even more so, he needs to learn of the pitfalls of existing methods. One might say, wistfully, that it would be nice to be able to pick up somebody's description of a new piece of apparatus, to go into the laboratory, to build it, and to have it work, the first time! There is, however, a serious problem of the interaction between the experiment per se and the theory for which the experiment is designed. Very often, this interaction renders problematic the interpretation of 'direct' observations. An example, from experience of the senior editor of this volume, is the question of contact angle hysteresis. (See Chapters 1 and 2. 364 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Advances in technology are making the business and manufacturing environment increasingly complex. Standards can help us cope with this complexity. Given the strategic importance of computers in the economies of the industrial world, it is fitting that one of the most significant commercial stories of our time is the standardization of computer communications. Quite frankly, when we joined with other computer users to launch this effort we didn't predict its scope and we should have done. public visibility. In restrospect, I guess The computer assisted technologies looming on the horizon offer some of the greatest functional and productivity tools available to improve business operations. However, the absence of a standardized electronic link permeating most business organizations poses a severe impediment to the efficient deployment of this technology. The feasibility of using computer controlled devices to design, test, and manufacture products - as part of a massive network - is well within our technological grasp. However, unless the world agrees upon a global set of standards that will make multi-vendor computer systems interoperable, successful implementation of these technologies becomes less and less attractive. 208 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -As editor of the series 'Perspectives in Sexuality: Behavior, Research, and Therapy,' I consider it a major scholarly achievement to publish selected proceedings of the Second International Congress of Sexology. Never before have so many professional organizations supported such a conference or so many scholars, from so many coun tries, participated in such a conference. Eighteen countries were represented; over one hundred papers were presented. The Congress and these proceedings mark an historical mile stone for sexology in international scientific cooperation. The collaboration of so many researchers from diverse disciplines fur ther illuminates the interdisciplinary approach. The papers pre sented reflect the challenge accepted by scientists to compare varieties of techniques and programs, to develop new theories and creative approaches in their investigations, and to initiate sci entific study of heretofore taboo areas of inquiry. Clearly, sexology has come of age. It takes its place among the respected scientific disciplines. This monumental achievement, the Second International Congress of Sexology, signals the emer gence at the international level of Sexology as Science. Richard Green ix Preface The Second International Congress of Sexology was held in Montreal, Canada on October 28-31, 1976. Researchers of interna tional acclaim from eighteen countries presented progress reports in specialities as endocrinology, neurophysiology, infertility, contraception, sexual dysfunction, ethics in sex research and sex education. The Congress, whose theme was 'international progress in sexology,' had as its scientific objective a wide range of sub jects concerning the interdisciplinary study of sexology from many areas of the world. 636 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Despite the widespread use of psychophysiological concepts and meth ods in behavior therapy, there is no text devoted specifically to the subject. The publication of this book is necessary and timely, and should promote a better appreciation of the physiological roots of behavior therapy. The important connections between physiology and behavior thera py receive insufficient recognition nowadays, despite the fact that his torically one of the two main streams of behavior therapy grew out of a physiological basis. Wolpe's early work was closely connected to phys iology, and in contemporary behavior therapy, Lang's critical contribu tion is firmly based in psychophysiology. The physiological component is prominent in Lang's highly productive three-systems analysis of emo tion and in its application to psychological disorders. In addition, there are philosophical reasons for maintaining the close connection between behavior therapy and physiology. The existence of these connections, and their justification, can raise few objections, and it is therefore curious that a book on this significant subject has not appeared earlier. The importance of physiology for behavior therapy can be illus trated by considering the nature of a behavior therapy deprived of its physiological connections. It would survive, certainly, but as a rather scrawny, uninteresting orphan among many clamorous competitors. 260 pp. Englisch. …

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Psychopathology is the science of deviant behavior. However, as psy chopathologists, our explanations of deviant behavior are not developed in a sterile, laboratory environment. Abnormality is a relative concept, and the labeling of someone or some behavior as abnormal is inextrica bly linked to a particular social context. In the United States, for exam ple, a woman reporting vivid hallucinations is likely to be committed to a mental hospital and the behavior considered maladaptive. In other cultures, the same behavior may be interpreted as reflecting magical, healing powers, and the woman honored and revered. An explicit assumption underlying this book is that elements of social causality influence the development and maintenance of psycho pathology. While the chapters emphasize environmental influences, this is not intended to negate the importance of physiological, biological, genetic, or hormonal factors in relation to psychopathology. The purpose of this book is to examine the impact of sex role ster eotypes on the occurrence and distribution of specific forms of psycho pathology. In contrast to prior work, which emphasizes sex differences (e.g., Franks and Gomberg's Gender and Disordered Behavior) these are not the primary focus of this volume. Sex Roles and Psychopathology analyzes the extent to which cultural norms about the sexes, societal expectations and values about sex-typed behavior and sex differences, and profes sional biases influence the development, manifestation, and mainte nance of abnormal behavior among men and women. 424 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Problem solving is a central topic for both cognitive psychology and artificial intelligence (AI). Psychology seeks to analyze naturally occur ring problem solving into hypothetical processes, while AI seeks to synthesize problem-solving performance from well-defined processes. Psychology may suggest possible processes to AI and, in turn, AI may suggest plausible hypotheses to psychology. It should be useful for both sides to have some idea of the other's contribution-hence this book, which brings together overviews of psychological and AI re search in major areas of problem solving. At a more general level, this book is intended to be a contribution toward comparative cognitive science. Cognitive science is the study of intelligent systems, whether natural or artificial, and treats both organ isms and computers as types of information-processing systems. Clearly, humans and typical current computers have rather different functional or cognitive architectures. Thus, insights into the role of cognitive ar chitecture in performance may be gained by comparing typical human problem solving with efficient machine problem solving over a range of tasks. Readers may notice that there is little mention of connectionist ap proaches in this volume. This is because, at the time of writing, such approaches have had little or no impact on research at the problem solving level. Should a similar volume be produced in ten years or so, of course, a very different story may need to be told. 404 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -It is difficult to imagine an era in which there were no selective drugs for treating anxiety, depression, schizophrenia, and other mental ailments. Yet in a remarkably short time these drugs have come to occupy a position of prominence in medical practice throughout the world, and they now account for a major portion of all prescriptions. Most psychotropic drugs were discovered with little premeditation on the part of the inves~ tigator. The drugs simply 'worked,' often with little rationale, and psychopharmacology has been for many years an empirical discipline in search of scientific underpinnings. In the past decade, a basic science of psychopharmacology has de veloped and grown rapidly. Though psychotropic drugs are exceedingly 'young' as drugs in medical practice go, we probably know more about their various mechanisms of action than we know about most drugs in clinical use. Advances in understanding effects of psychopharmaceuticals on the brain have been so prodigious that a new research paradigm has evolved. Instead of being concerned solely with understanding how the drugs act, many researchers now employ psychotropic drugs as tools-often the most powerful ones-to elucidate brain function. Consequently, psychophar macology is central to neurobiology, which in turn has emerged as an important discipline, heir to the preeminent glamor of molecular biology. 316 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -It is ten years since the first symposium on cell locomotion was held (Locomotion of Tissue Cells, Ciba Foundation Symposium 14, 1972). That meeting was chaired by Michael Abercrombie, and in his intro ductory remarks he commented on the extent to which the importance of cell locomotion, apart from that seen in leucocytes, had been under estimated. Much has been done to correct that neglect during the suc ceeding decade, and we have learned more about the underlying mechanisms of cell locomotion and about the factors which may influence it. Abercrombie was himself a major contributor to this field of research (as a glance at the lists of references in this book will confirm), and his ideas inspired the work of many other investigators. As in all branches of science, progress in the study of celliocomo tion has depended on the availability of appropriate experimental techniques. Of these, tissue culture has made the greatest contribution, in conjunction with a variety of procedures using either the light or the electron microscope. We have, therefore, attempted, in chapters 2 and 3, to provide explanations of the techniques which have been parti cularly fruitful, but only in sufficient detail to permit the reader to is not a laboratory manual. 176 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This volume is a collection of the presentations given at a symposium on reaction kinetics in micelles at the l64th Meeting of the American Chemical Society, Division of Colloid and Surface Science, in New York City in August of 1972. Participants in this symposium have all been active in the field of reaction kinetics in micelles during the past several years. Indeed, much of what is known in this area is the direct result of their efforts. It is hoped that this small volume will serve to summarize the current state of knowledge in this area, to point out some new directions toward which research efforts are pointed, and to induce new researchers with fresh points of view to enter this young and relatively unexplored area of chemistry. v CONTENTS List of Authors. ix Recent Advances in the Chemistry of Micelles. 1 Norbert Muller Micellar Catalysis for Carbonium Ion Reactions ------. 25 Jan Baumrucker, Maritza Ca1zadi11a, and E. H. Cordes Micellar Effects in Steady-State Radiation Induced Reac t ions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 . . . . . . . . . . . J. H. Fendler, G. W. Bogan, E. J. Fendler, G. A. Infante, and P. Jirathana Electrolyte Effects on Micellar Catalysis -.---------. 73 C. A. Bunton Micellar Control of the Nitrous Acid Deamination Reaction ---------------------------------------- 99 Robert A. Moss, Charles J. Ta1kowski, David W. 172 pp. Englisch.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -There is a startling amount of research activity concerning the role of sialic acid in mammalian cells and in the mammalian organism. One may discern in the early literature premonitions of compounds containing sialic acid, traceable by descriptions of color reactions, as far back as the turn of the century. Work spanning the 1930s to the 1950s culmi nated in the crystallization of sialic acid from a wide variety of biological materials. The ubiquitous nature of the sialic acids, and the biological importance of the substances in which they occur, then became generally manifest. Since then, the chemistry and metabolism of sialic acid and its occurrence, notably, but not exclusively, in the outer cell surfaces of mammalian cells and in key extracellular glycoproteins, have received great attention. The involvement of sialic acid-containing substances in tumorigenicity and in numerous metabolic and infectious pathological conditions, and in the growth, development, and integrity of mammalian cells has achieved widespread recognition. Intensive inquiry into the biological roles of sialic acid continues in a large number of research laboratories throughout the world. This book is intended to represent for the uninitiated as well as for the expert a wide and detailed overview of the current state of knowledge. Major efforts and pioneering break throughs have emerged from several laboratories, located on both sides of the Atlantic, of which we make no special individual mention here since they will to some extent appear in the pages that follow. 396 pp. Englisch.…