springer us mai 2012 (261 risultati)

Taschenbuch. Condizione: Neu. Neuware -wcrd than surface because-unless the sclid is suspended in a vacuum-it is in ccntact with a gas, a liquid, cr ancther sclid, and it is the interface between the sclid and the cther body which is the fccus cf interest in surface phencmena). The literature dces nct ccntain any useful definiticn cf this term. The term surface cr interface can be defined cnly if cne ccnsiders the characteristics cf the bulk material, the ccnditicn cf the surface under discussicn, the envircnment, and its reacticn with the surface. The emphasis, hcwever, shculd be given to' the problem under which the surface is discussed. In this way, the basic questicn can be answered as to' whethe. r a surface is twc-dimensicnal cr whether it has depth and is, therefcre, three -dimensicnal. This vclume ccnsists cf a ccmpilaticn cf ten papers, tcgether with discussicns, presented at the 1964 Sympcsium. In the first chapter, H. C. Gatcs (Massachusetts Institute cf Technclcgy) dis cusses the structure and electrcnic ccnfiguraticn cf crystalline surfaces. He ccvers three different aspects cf surfaces-their chemical behavicr, their structural prQperties, and their electrQnic prQperties. With respect to' chemical behaviQr, the interrelatiQn ship between unsaturated bonds and lattice ccnfiguratiQn is Qf prime impQrtance. In a diamQnd cubic cQnfiguratiQn, as was shQwn in a mQdel, the degree Qf unsaturatiQn cr, in Qther wQrds, the density cf free bonds varies with the respective crystalline surface.

Taschenbuch. Condizione: Neu. Neuware - wcrd than surface because-unless the sclid is suspended in a vacuum-it is in ccntact with a gas, a liquid, cr ancther sclid, and it is the interface between the sclid and the cther body which is the fccus cf interest in surface phencmena). The literature dces nct ccntain any useful definiticn cf this term. The term surface cr interface can be defined cnly if cne ccnsiders the characteristics cf the bulk material, the ccnditicn cf the surface under discussicn, the envircnment, and its reacticn with the surface. The emphasis, hcwever, shculd be given to' the problem under which the surface is discussed. In this way, the basic questicn can be answered as to' whethe. r a surface is twc-dimensicnal cr whether it has depth and is, therefcre, three -dimensicnal. This vclume ccnsists cf a ccmpilaticn cf ten papers, tcgether with discussicns, presented at the 1964 Sympcsium. In the first chapter, H. C. Gatcs (Massachusetts Institute cf Technclcgy) dis cusses the structure and electrcnic ccnfiguraticn cf crystalline surfaces. He ccvers three different aspects cf surfaces-their chemical behavicr, their structural prQperties, and their electrQnic prQperties. With respect to' chemical behaviQr, the interrelatiQn ship between unsaturated bonds and lattice ccnfiguratiQn is Qf prime impQrtance. In a diamQnd cubic cQnfiguratiQn, as was shQwn in a mQdel, the degree Qf unsaturatiQn cr, in Qther wQrds, the density cf free bonds varies with the respective crystalline surface.

Taschenbuch. Condizione: Neu. Neuware - Evolutionary Biology, of which this is the twenty-first volume, continues to offer its readers a wide range of original articles, reviews, and com mentaries on evolution, in the broadest sense of that term. The topics of the reviews range from anthropology and behavior to molecular biology and systematics. In recent volumes, a broad spectrum of articles have appeared on such subjects as evolution of the bacterial genome, biochemical system atics in plants, a discussion of species selection, and development and evolution of the vertebrate limb. Articles such as these, often too long for standard journals, are the material for Evolutionary Biology. The editors continue to solicit manuscripts on an international scale in an effort to see that everyone ofthe many facets of biological evolution is covered. Manuscripts should be sent to anyone of the following: Max K. Hecht, Department of Biology, Queens College of the City University of New York, Flushing, New York 11367; Bruce Wallace, Department of Biology, Virginia Polytechnic Institute and State University, Blacks burg, Virginia 24061; or Ghillian T. Prance, New York Botanical Garden, Bronx, New York 10458.

Taschenbuch. Condizione: Neu. Neuware - Volume 3 continues the approach carried out in the first two volumes of this se ries of publishing articles on membrane methodology which include, in addition to procedural details, incisive discussions of the ap plications of the methods and of their limitations. Wh at is the theoretical basis of the method, how and to what problems can it be applied, how does one interpret the results, what has thus far been achieved by the method, what lies in the future-these are the questions the authors have tried to answer. No area of membrane biology engages the interest of more investigators than studies of the plasma membrane. Four chapters in this volume are concerned with one or more aspects of the cell surface. Fundamental to all studies of the cell surface are the isolation and characterization of pure plasma membranes. Many preparations described in the literature are inadequate or are inadequately characterized. In the first chapter, Neville discusses the theoretical and practical bases of tissue fractionation, empha sizes the variations in enzyme content among plasma membranes from different sources, offers guidance in the choice of the proper criteria for assessing membrane purity, and suggests the best markers for detecting the possible presence of contaminating organelles. To review in detail each of the many preparations of plasma membranes that have been published is impossible.

Taschenbuch. Condizione: Neu. Neuware - This volume continues the tradition of SUBCELLULAR BIOCHEMISTRY of trying to break down interdisciplinary barriers in the study of cell function and of bringing the reader's attention to less well studied, but nevertheless useful, biological systems. We start with an extensive article by T. P. Karpetsky, M. S. Boguski and C. C. Levy on the structure, properties and possible functions of polyadenylic acid. Apart from revealing a general lack of appreciation of many important aspects of the chemical properties of poly adenylic acid, the literature also shows that there is a great gulf between those who study the biological role of polyadenylic acid. and those who study its physicochemi cal properties. The article by Karpetsky and his colleagues is an attempt to overcome this lack of communication and to present an integrated view of the subject. The authors go into the subject in full detail and the more biologically inclined reader may on occasion have to reread his nucleic acid physical chemistry notes! However, the effort is worthwhile and the article is a timely reminder that we cannot treat nucleic acids as mere abstractions, but that they are complex organic macromolecules capable of equally complex, but nevertheless important, interactions. The next article is by J. Steensgaard and N. P. Hundahl M0ller and deals with computer simulation of density gradient centrifugation systems.

Taschenbuch. Condizione: Neu. Neuware - The first volume of Evolutionary Biology was published thirteen years ago. Since that time thirteen volumes and one supplement have appeared. As stated in earlier prefaces, we are continuing the focus of this series on critical reviews, commentaries, original papers, and controversies in evolu tionary biology. It is our aim to publish papers primarily of greater length than normally published by society journals and quarterlies. We therefore invite colleagues to submit chapters that fall within the focus and standards of Evolutionary Biology. The editors regretfully announce that Dr. William C. Steere has decided to withdraw from the editorial board of Evolutionary Biology. Dr. Ghillean T. Prance will replace Dr. Steere for forthcoming volumes. Manuscripts should be sent to anyone of the following: Max K. Hecht, Department of Biology, Queens College of the City University of New York, Flushing, New York 11367; Bruce Wallace, Department of Genetics, Cornell University, Ithaca, New York 14850; Ghillean T. Prance, New York Botanical Garden, Bronx, New York 10458. The Editors vii Contents 1. Some Relationships between Density-Independent Selection and Density-Dependent Population Growth Timothy Prout Introduction . . Part I. The Basic Model: Definitions, Assumptions, and Relationships . 3 Part II. Biological Aspects. . . . . . . . . . . . . . . . . . . . . . . . 10 . . . . . . . . . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 . . . . . . . . . . . The Biological Interpretation of the Model. . . . . . . . . . . . . . 10 . . . . Experimental and Observational Aspects. . . . . . . . . . . . . . . 13 . . . . Part III. Census-Stage Theory. . . . . . . . . . . . . . . . . . . . . 22 . . . . . . . . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 . . . . . . . . . . . Two-Point Census . 23 Three-Point Census: Classical Selection . . . . . . . . . . . . . . . . 42 . . . Summary of Two-and Three-Point Censuses. . . . . . . . . . . . . 50 . . . Part IV. Summary and Some Implications. . . . . . . . . . . . . . . . 52 . . . . Summary. 52 Some Implications. . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 . . . . . . . . . . Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 . . . . . . . . . . . . . . References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 . . . . . . . . . . . . . .

Taschenbuch. Condizione: Neu. Neuware - Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) \* at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 29 (thesis year 1984) a total of 12,637 theses titles from 23 Canadian and 202 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 29 reports theses submitted in 1984, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.

Taschenbuch. Condizione: Neu. Neuware - This is the third volume of the comprehensive series on Struc ture and Function of the Circulation, edited by Dr. Colin J. Schwartz with the collaboration of Nicholas T. Werthessen and Stewart Wolf. Dr. Schwartz, an authority on vascular structure and function and a respected investigator in this field for many years, selected as authors for the chapters an outstanding group of scientists from various parts of the world. As indicated in the Preface, the impetus for this broad treat ise evolved from the scientific sessions of three interdisciplinary international conferences held in Lindau in 1970, in Heidelberg in 1973, and Totts Gap, Pennsylvania, in 1976 as well as from numerous informal discussions. The subjects dealt with in these three volumes range from the roots of our knowledge in ancient history to the most recent inform ation on contractile proteins of smooth muscle cells. The structure, distribution, and dynamics of arteries, veins, and lymphatics are described in chapters on the systemic circulation as well as that of the heart, the vessels themselves, the brain, nerves, and viscera. Descriptions of ultrastructure, histochemistry, metabolism, and func tion of endothelium and of vascular smooth muscle and of vascular changes in aging are all included in the vast scope of this under taking.

Taschenbuch. Condizione: Neu. Neuware - Prior and subsequentto the publication of the third edition of the Diagnos tic and Statistical Manual of Mental Disorders (DSM-III), we have witnessed a considerable upsurge in the quantity and quality of research concerned with the psychiatric diagnostic process. There are several factors that have contributed to this empirical influx, including improved diagnostic cri teria for many psychiatric disorders, increased nosological attention to childhood psychopathology, and development and standardization of several structured diagnostic interview schedules for both adult and child populations. With the advent of DSM-III-R, and in anticipation of DSM-IV, diagnostic labels and their definitions have been in a state of change, as evinced by the many refinements and modifications currently taking place. However, the basic purpose or raison d'etre of the nosological scheme has not been altered. Psychiatric diagnosis is the means by which we classify or categorize human psychopathology. And, as is the case in the medical arena, psychiatric diagnosis serves three central functions: classification. communication. and prediction. As research accumulates, our understanding of psychiatric disorders increases, and we are in a much better position to classify reliably and with validity, as well as to com municate and predict Despite periodic changes in the diagnostic system, the basic strategies for conducting diagnostic research (e. g. , genetic-family studies, biological markers, follow-up studies, etc. ) do not vary appreciably over time. But in over one decade no scholarly book has appeared that tackles the essential research issues involved in upgrading the diagnostic endeavor.

Taschenbuch. Condizione: Neu. Neuware - 1 On Some Fundamental Concepts of Darwinian Biology.- Vitalism, Mechanism, and Compositionism.- Adaptedness and Adaptation.- Adaptedness to Survive and to Reproduce.- Adaptability.- Evolutionary Plasticity.- The Problem of Quantification of Adaptedness.- Darwinian Fitness.- Varieties of Natural Selection.- Darwinian Fitness and Adaptedness.- Evolutionary Opportunism and Adaptive Radiation.- Progressive Evolution.- References.- 2 Cave Ecology and the Evolution of Troglobites.- Animal Life in Caves.- The Cave Ecosystem.- Regressive Evolution in Cave Animals.- Speciation and Adaptation in Troglobites.- References.- 3 Molecular Biology and Bacterial Phylogeny.- The Evolution of Microorganisms in the Precambrian.- Microbial Fossils.- Bacteria as 'Living Fossils'.- The Relationship Between Bacteria and Bluegreen Algae.- DNA Nucleotide Composition of Microorganisms.- Evolutionary Changes in Bacterial DNA.- DNA Homology.- Phenotypic Aspects of Bacterial Evolution.- Summary.- References.- 4 Evolutionary Implications of Sexual Behavior in Drosophila.- Types of Behavior.- Drosophila Preview.- Ontogeny of Mating Behavior.- Basic Courtship Patterns.- Adaptive Nature of Mating Behavior.- Specialized Mating Behavior of Hawaiian Species.- Summary of Mating Behavior.- Nature and Function of the Stimuli.- Mating Behavior of Other Diptera.- Significance of Drosophilid Mating Behavior.- Lek Behavior.- Sexual Isolation.- Intraspecific Variations.- Interspecific Behavior.- Origin of Sexual Isolation.- Conclusion.- References.- 5 Evolution of Photoreceptors.- Ciliary Photoreceptors.- Rhabdomeric Photoreceptors.- Ciliary Line of Evolution.- Rhabdomeric Line of Evolution.- Other Taxa.- Protostomes Versus Deuterostomes.- References.- 6 Evolution and Domestication of the Dog.- Taxonomy andDistribution of the Genus Canis.- Origin of the Dog.- Further Evidence for the Wolf as Ancestor to the Dog.- Time of Domestication.- The Place of Domestication.- The Process of Domestication.- Evolution of the Wolf.- Evolution of the Dog.- Evolution of Behavior in Dogs and Wolves.- Theoretical Considerations.- References.- 7 A Sampler of Human Behavioral Genetics.- The Nature of Psychological Traits.- The Twin Method.- Intellectual Abilities.- Schizophrenia.- Summary.- References.- 8 Suture-Zones of Hybrid Interaction Between Recently Joined Biotas.- Tabulation of Suture-Zone Examples.- The Individual Nearctic Zones.- Suture-Zones Outside North America.- Stabilization After Early Suturing.- Hybridization Outside Suture-Zones.- Discussion.- Acknowledgments.- Tables.- References.- Author Index.

Taschenbuch. Condizione: Neu. Neuware - This volume contains summaries of most of the invited presentations given by lecturers and participants at the NATO Advanced Study Institute, 'Develop mental Neurobiology of Vision,' held in Rethymnon, Crete, Greece 18-27 Sep tember 1978. The purpose of this meeting was to enable a relatively small international group of scientists and students to hold discussions and to present their views on current problems in the field. It was intended that the results of the exchanges would be conveyed to others in the native countries of the parti cipants. An attempt was made to obtain broad representation of disciplines within the area of the Institute and this is reflected in the diversity of the chapters in this book. Considerable interest has been generated in recent years concerning the development and plasticity of vision. Perhaps not unexpectedly, along with the high level of activity in this field, there have been so me controversial findings.

Taschenbuch. Condizione: Neu. Neuware - A number of significant changes have occurred in Advances in Solar Energy since Volume 1 appeared in 1982. The delays in publication of the second volume are the result of reorganization of the American Solar Energy Society, and the negotiation of a new publishing arrangement. Beginning with this volume, Advances is now published jointly by the Society and Plenum Press. The Editorial Board has been enlarged to be more representative of the different fields of solar energy conversion. Production of Advances is being expedited through the use of modern word processing equipment and the 'lEX typesetting-editing program. We have gone to a single-column format to ease the problems of presenting long equations, and we expect that the user of the volume will find it easy to read. The use of 'lEX will make last minute updates possible. The external appearance of the volume matches that of Volume 1. We expect that future volumes of this annual will be proceeding on schedule. We invite comments from users and correspondence from prospective authors of critical reviews. Karl W. Boer John A. Duffie CONTENTS CHAPTER 1 The Measurement of Solar Radiation Ronald Stewart, Daniel W. Spencer and Richard Perez 1.1 Abstract 1 1.2 Characteristics of Pyranometers . . 2 1.3 General Features of a Pyranometer . . 3 1.3.1 Instrument Sensitivity 4 1.3.2 Response with Time 4 1.3.3 Sensitivity 4 1.3.4 Responsivity . .

Taschenbuch. Condizione: Neu. Neuware - The dynamic state of developments within the field of the vasoactive polypeptides is reflected in the continuous series of publications appearing on this topic Thus, the proposal to con o vene another symposium only two years after the 1969 Fiesole Symposium (Plenum Press, 1970) was received enthusiastically and with high expectation. Enthusiasm was based, undoubtedly, in part on meeting together once again in the very pleasant surroundings of Florence with most gracious and enchanting hosts. The 25th International Congress on Physiological Sciences held in Munich the following week also provided the impetus for the organization of this satellite symposium on vasopeptides. However, the accelerated pace of research in the 'kinin' field was the major motivating force for the symposium. It was felt necessary to inform each other of the many advances that were taking place in the varied aspects of this specialized but impor tant field o The role of kinins in both physicologic and pathologic processes still remains to be elucidated definitively. Thus, these proceedings contain new and unpublished informa tion on the chemistry, biochemistry, physicology, pharmacology, as well as pathophysiology of vasopeptides. Recent data on &tructure activity relationships of kinin analogues are complemented by a description of radioimmunoassay techniques for kinins, and studies on the site of synthesis of substrates for kinin-forming enzymes.

Taschenbuch. Condizione: Neu. Neuware - This book is the outcome of a meeting held in Davos, Switzerland, February 7-12, 1982 focused primarily on mononuclear phagocytes and on natural killer (NK) cells. This IX International RES Congress was attended by 489 scientists from 31 countries and there were 340 scientific presentations in oral or poster session. The essential purpose of the Congress was to bring together scientists representing various aspects of mononuclear phagocyte biology to review and examine cri~ically the effects and mechanisms of macrophage growth control as well as the participatio~ of these cells in the afferent and efferent limbs of the immune response. Additional topics included the production and distribution of mono nuclear phagocytes; the intrinsic and extrinsic regulation of these cells; and the origin, nature, function and regulation of NK cells. The ultimate goal of the Congress was to enhance communication between scientists in various countries and disciplines so that new research directives could be defined with which to explore basic aspects of macrophage and NK cell participation in the control of cancer and infection.

Taschenbuch. Condizione: Neu. Neuware - This volume constitutes the Proceedings of the November 8-10, 1982 Conference on EMERGENT PROCESS METHODS FOR HIGH TECHNOLOGY CERAMICS, held at North Carolina State University in Raleigh. It was the nineteenth in a series of 'University Conferences on Ceramic Sci ence' initiated in 1964 by four institutions of which North Carolina State University is a charter member, along with the University of California at Berkeley, Notre Dame University, and the New York State College of Ceramics at Alfred University. More recently, ceramic oriented faculty in departments at the Pennsylvania State University and Case-Western Reserve University have joined the four initial institutions as permanent members of the consortium. These research oriented conferences, each uniquely concerned with a timely ceramic theme, have been well attended by audiences which typically were both international and interdisciplinary in character; their published Proceedings have been well received and are frequently cited. This three day conference addressed the fundamental scientific background as well as the technological state-of-the-art of several novel methods which are beginning to influence present and future directions for non-traditional ceramic processing, thus affecting many of the advanced ceramic materials needed for a wide variety of research and industrial applications. The number, the importance and the application of new ceramic processing techniques have expanded considerably during the last ten years.

Taschenbuch. Condizione: Neu. Neuware - The original aim of this book was to cover different aspects of the tradi tionally 'filamentous' potex-, carla-, poty-, clostero-, and capilloviruses. The title The Filamentous Plant Viruses seemed the only suitable one, but it has led us to discuss also the quite different filamentous viruses of the rice stripe group-recently officially named the tenuivirus group which otherwise, indeed, might not have been conveniently covered in any volume of this series. The question must be asked: What is there new that justifies the presentation of a book of this kind An outline of the answer may be Among the traditional filamentous viruses, much pro given as follows. gress has been made in elucidating the physical structure of potexvirus particles, and this work serves as an excellent model for discussion of and future experiments on the poty-, carla-, clostero-, and capilloviruses, which have comparable structures, although they are more difficult to manipulate. Work on the structure and strategy of the genomes of poty viruses is, however, relatively advanced and at a very interesting stage. The helper component that assists the aphid transmission of potyviruses has also recently received considerable attention, although the more we know about that, the less seems clear about the aphid transmission of the carlaviruses and closteroviruses, which apparently neither possess nor require a helper component.

Taschenbuch. Condizione: Neu. Neuware - This book is formulated from the papers presented at the International Symposium on 'Membrane Biochemistry and Bioenergetics,' held at the Rensselaerville Institute, Rensselaerville, New York, August 1986, in honor of Tsoo E. King on the occasion of the 30th anniversary of reconstitution of arespiratory chain system by Professor David Keilin and Tsoo E. King. Professor Tsoo E. King, to whom this volume is dedicated, has made enormous contributions to the field of isolation and reconstitution of membrane proteins and has continued to explore the frontiers of bioener getics. In particular, his persistent proposals on the existence of ubiquinone binding proteins from conceptualization to experimentation eventually convinced many scientists to study these proteins further . Professor King's preparation of reconstitutively active succinate dehydrogenase opened a new avenue in the fie1d of membrane bioenergetics, and his work has been greatly appreciated. The purpose of the symposium was to bring together scientists from diverse disciplines related to membrane bioenergetics to discuss the recent developments in the field. This symposium, initiated by the Capital District Bioenergetics Group, was attended by 100 scientists, 80 of whom presented their recent discoveries. The symposium was arranged in a sequence of platform lectures, poster presentations and discussion sessions so that all the participants had opportunities to discuss the subjects presented. Most of the participants contributed a chapter to this volume. We would like to express our regret to many other scientists including Professor King's friends, colleagues and students who could not attend due to various reasons.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Like many genetic engineers, I have recently been receiving the atten tion of various venture capital companies, international drug houses and Members of Parliament. I will not discuss which of these approaches are most welcome, but it did cause me to consider the speed of advance in genetic engineering, and the implications of this rapid growth. There were few who anticipated it - only five years ago, most scientists thought applications would come at the end of the century, yet we see products such as insulin and interferon already available for clinical testing. In Europe in general and Britain in particular, this explosive growth in our own field has coincided with a general industrial depression and a marked reduction in funding for biomedical research. The brain drain from Britain is a serious matter, for we are losing the best of our younger scientists, on whom we would rely to train the next generation of molecular biologists. These volumes have come from British labs (mostly because I happen to be based in London, and my contacts and friends are here), and I feel that the quality of the con tributions also shows that our current research is of a high standard. 188 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This edited volume deals with the reintegration and trajectories of intrastate or interstate war veterans. It raises the question of the effects of the war experience on ex-combatants with regards, in particular, to the perpetuation of a certain level of violence as well as the maintaining of structures, networks, and war methods after the war. 301 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The 1978 Advanced Study Institute in Nuclear Theory devoted to common problems in Low and Intermediate Energy Nuclear Physics was held at the Banff Centre in Alberta, Canada from August 21 through September 1, 1978. The present volume contains the text of 25 lectures and seminars given at the Institute and illustrates the directions that nuclear physicists are taking in the evolution toward a unified picture of low, medium and high energy phenomena. Recent attempts at unifying the weak and electromagnetic inter action in particle physics have led naturally to question their role in nuclei. The success of the quark model at interpreting the new resonances in high energy physics makes it imperative to consider their role in dealing with nuclear physics problems at the microscopic level. Is our present knowledge of the nuclear potential consistent' with recent experimental evidence at low and medium energy and can it correlate meaningfully nuclear and pion physics phenomena These are some of the fundamental questions debated in this book attempting to offer a consistent picture of the nuclear system as it emerges using the electromagnetic, weak and strong interaction probe. The lectures and seminars forming the present volume have been divided into four sections dealing with a) the weak interaction, b) quarks and nuclear structure, c) physics of electrons, protons and kaons, and finally d) pion physics. 692 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In working with graduate students in engineering physics at the University of Virginia on research problems in gas kinetics, radiation biology, ion materials interactions, and upper-atmosphere chemistry, it became quite apparent that there was no satisfactory text available to these students on atomic and molecular collisions. For graduate students in physics and quantum chemistry and researchers in atomic and molecular interactions there are a large number of excellent advanced texts. However, for students in applied science, who require some knowledge and understanding of col lision phenomena, such texts are of little use. These students often have some background in modern physics and/or chemistry but lack graduate level course work in quantum mechanics. Such students, however, tend to have a good intuitive grasp of classical mechanics and have been exposed to wave phenomena in some form (e. g. , electricity and magnetism, acoustics, etc. ). Further, their requirements in using collision processes and employing models do not generally include the use of formal scattering theory, a large fraction of the content of many advanced texts. In fact, most researchers who work in the area of atomic and molecular collisions tend to pride themselves on their ability to describe results using simple theoretical models based on classical and semiclassical methods. 308 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The Helene Harris Memorial Trust has become recognized as providing one of the most important international fora for the presentation of research in ovarian cancer. Four biennial meetings have taken place, the most recent of which was held between May 11-14, 1993, in Toronto, Canada. This forum has grown in stature from its inception in 1987 and has brought together interdisciplinary clinical and scientific researchers from around the world who are endeavouring to perform 'cutting edge' studies in the field. The assembled group of presti gious investigators met on this occasion to present their data, to exchange ideas, and to arrange collaborations with the goal of developing new means of detection, treatment and cure of ovarian cancer. The incentive for the establishment of the Trust and its international forum was the prema ture loss through ovarian cancer of Helene Harris, the wife of Mr John Harris. Mr Harris and the Trustees looked for a meaningful way to honour the memory of Helene and to advance the noble cause of gaining an increase in the scientific knowledge of the subject. For those of us who spend most of our waking hours assisting patients and their families who are devastated by this disease, the Trust's generosity provides inspiration, hope and the opportunity for their practical application in a unique professional forum. 412 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The first volume of Evolutionary Biology was published twelve years ago. Since that time twelve volumes and one supplement have appeared. As stated in earlier prefaces, we are continuing the focus of this series on critical reviews, commentaries, original papers, and controversies in evolu tionary biology. It is our aim to publish papers primarily of greater length than normally published by society journals and quarterlies. We therefore invite colleagues to submit chapters that fall within the focus and standards of Evolutionary Biology. Manuscripts should be sent to anyone of the following: Max K. Hecht, Biology Department, Queens College of the City University of New York, Flushing, New York 11367; William C. Steere, New York Botanical Garden, Bronx, New York 10458; Bruce Wallace, Department of Genetics, Cornell University, Ithaca, New York 14850. The Editors vii Contents 1. Apparent Changes in the Diversity of Fossil Plants: A Preliminary Assessment Karl J. Niklas, Bruce H. Tiffney, and Andrew H. Knoll Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 The Pros and Cons of Studying Plant Diversity Changes. . . . . . 6 The Concept of Species. . . . . . . . . . . . . . . . . . . . . . . . . 11 . . . . . . . . . Choice of Taxonomic Rank. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 . Biasing Factors in the Fossil Record. . . . . . . . . . . . . . . . . . . 13 . . . . . . The 'Human Factor' . . . . . . . . . . . . . . . . . . . . . . . . . 14 . . . . . . . . . . Biological Biases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Geological Biases. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 . . . . . . . . . . . Sources, Methods, and Analyses of ApparentDiversities. . . . . . . . 26 Statistical Computations. . . . . . . . . . . . . . . . . . . . . . . . 27 . . . . . . . . . Analysis of the Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 . . . . . . . . Geological Explanation of Residuals. . . . . . . . . . . . . . . . . . . 34 . . . . . . Biological Explanation of Residuals . . . . . . . . . . . . . . . . . . . . . . . . . 38 The Origin and Early Evolution of the Land Plants . . . . . . . . . . 39 The Evolution of Heterospory and the Seed Habit . . . . . . . . . . . 42 _ The Angiosperms. . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 . . . . . . . . . . . Large-Scale Biological Interpretations . . . . . . . . . . . . . . . . . 62 . . . . . . 404 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -As we enter mid-19Bl, the Reagan administration is completing a review of U. s. nuclear waste management policy. Major revisions in the recently announced Carter administration policies are expected. Reagan is a strong supporter of civilian nuclear power and will probably encourage spent fuel reprocessing by the private sector. Meanwhile, the deep geologic disposal of defense nuclear waste in New Mexico moves ahead. In the coming months, discussion and debate of U. S. radioactive waste management policies will intensify in the Congress, in the technical community, and among environ mentalists and the public at large. An important element of the debate should be the scientific and technical issues of the safe disposal of radioactive wastes from both the civilian nuclear power fuel cycle and the defense fuel cycle, including naval pro propulsion programs and nuclear weapons production. The literature of waste management is voluminous, covering all aspects of the world-wide problem of safe disposal. The authors of this book have attempted to cri tically review this literature, selecting the more important reports to abstract. Our selection criteria were heavily influenced by considerations of policy issues and by our experiences in both the technical community and the regulatory environment. Our intent is to identify those reports we feel will contribute the most to the development of a national consensus on the safe disposal of existing and future nuclear wastes as yet another U. S. waste policy emerges in Washington. 116 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This book has grown out of our shared experience in the development of the Stanford Synchrotron Radiation Laboratory (SSRL), based on the electron-positron storage ring SPEAR at the Stanford Linear Accelerator Center (SLAC) starting in Summer, 1973. The immense potential of the photon beam from SPEAR became obvious as soon as experiments using the beam started to run in May, 1974. The rapid growth of interest in using the beam since that time and the growth of other facilities using high-energy storage rings (see Chapters 1 and 3) demonstrates how the users of this source of radiation are finding applications in an increasingly wide variety of fields of science and technology. In assembling the list of authors for this book, we have tried to cover as many of the applications of synchrotron radiation, both realized already or in the process of realization, as we can. Inevitably, there are omissions both through lack of space and because many projects are at an early stage. We thank the authors for their efforts and cooperation in producing what we believe is the most comprehensive treatment of synchrotron radiation research to date. 776 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Since the publication of the first edition of The Diabetic Pancreas in 1977, much progress has been made in various areas of diabetes research. While only a rela tively short while ago diabetes was considered a single disease, in more recent years it has become apparent that it is a heterogeneous group of disorders, all of which are characterized by a decreased tolerance of carbohydrates and most of which have a genetic basis, although the genetic types vary. In more recent years, an International Work Group sponsored by the National Diabetes Data Group of the NIH proposed a now generally accepted classification, according to which the insulin-dependent ketosis-prone diabetes, formerly and inappropriately called the juvenile type, is considered a subclass of diabetes, type 1. Because it can occur at any age, it was recommended that the diagnosis based on age be eliminated. The non-insulin-dependent, non-keto sis-prone type of diabetes, which is not secondary to other diseases or conditions, and which was formerly called matu rity-onset diabetes, was considered a second subclass, type II, because although this form usually develops after age 40, it also occurs in young persons, who do not require insulin or are not ketotic. Although this classification is not entirely agreed upon by all diabetologists, for practical purposes it has been generally accepted and has been utilized by the contributors to this volume. 656 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The decade of the 1990s offers a chance to build a new and better international order. What policy choices will this decade pose for the United States This wide-ranging volume of essays imaginatively addresses these crucial issues. The peaceful revolutions of 1989-1990 in the Soviet Union and Eastern Europe have swept away the foundations of the Cold War. The Eastern European nations are free; Europe is no longer divided; Germany is united. The Soviet threat to Western Europe is ending with the collapse of the Warsaw Pact and the withdrawals and asymmetrical cuts of Soviet forces. And U.S.-Soviet rivalry in the Third World is giving way to cooperation in handling conflicts, as in Iraq and elsewhere. Much, of course, remains uncertain and unsettled. What sort of Soviet Union will emerge from the ongoing turmoil, with what political and economic system and what state structure How far and how soon will the Eastern Euro pean states succeed in developing pluralist democracies and market economies Are the changes irreversible Certainly there will be turmoil, backsliding, and failures, but a return to the Cold War hardly seems likely. 288 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -After the success of the previous summer schools organized by the Nuclear Physics Division of the Netherlands' Physical Society in 1975 and 1977, we thought it worthwhile to continue this tradition. The immediate very positive reactions received from all invited speakers encouraged us to proceed with the orgaization. Although the number of students had to be restricted to about one hundred, the international character of the School was evident from about thirty nationalities which were represented. The material contained in this book covers the talks given by all speakers invited to lecture on the subject of nuclear structure research. These proceedings should therefore serve as an excellent introduction to many topics of current interest in this exciting field. We hope that the lectures and discussions as well as the many informal contacts made during the various social activities will greatly stimulate interest in nuclear structure investigations among all the participants. The organization of the summer school has been made possible by substantial support given by the Scientific Affairs Division of the North Atlantic Treaty Organization, the Netherlands' Ministry of Education and Science and the Netherlands' Physical Society. The invaluable help of the 'Bureau Congressen' of the Ministry of Education and Science and the friendly assistance of the manage ment of the College of Agriculture in Dronten contributed greatly to the pleasant atmosphere during the summer school. 444 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Radioactive tracers have had a profound impact on scientific research during the past twenty years, particularly in bio chemistry and allied fields. The rapid evolution of sophisticated instrumentation and labeling techniques during the past ten years has made possible on a routine basis exquisitly sensitive experiments which with other techniques would require her culean efforts on the part of the investigator. The Symposia on Advances in Tracer Methodology, which have been held regularly since 1957, provide for research workers in biochemistry, pharmacology, endocrinology, and medicine a focus on the numerous developments in the tracer field that are usually scattered throughout the scientific literature. Volume 3 is arecord of the proceedings of the Ninth and Tenth Symposia, which were sponsored by the New England Nuclear Corporation and the Packard Instrument Company, Inc. Recent advances in tracer methodology, as reflected by the papers in this volume, have been mainly concerned with im proved analytical techniques, such as liquid scintillation count ing, autoradiography, and chromatography, and with novel ap plications of labeled compounds in biochemical and clinical problems. 348 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Awarenes s of the great significance of surface consti tution in understanding the behavior and perforITlance of ITlaterials has been growing in proportion to the ITleans which have becoITle available for surface study. Recent years have seen iITlportant advances in analytical tools and ITlethods; their applications to date will certainly suggest ITlany other fruitful lines of investigation. The Conference 'Surfaces and Interfaces of Glass and CeraITlics' held at the New York State College of CeraITlics at Alfred University under the sponsorship of the U. S. ArITly Research Office, DurhaITl, and the National Aeronautics and Space AdITlinistration, in August 1973, was tenth in the Uni versity Series in CeraITlic Science, held in rotation aITlong North Carolina State University, the University of California at Berkeley, the University of Notre DaITle and Alfred Uni versity. The chapters are arranged in order of their particular eITlphasis beginning with those principally concerned with analytical ITlethods. Chapters dealing with friction and wear follow, highly topical in the present-day concern with effi cient use of energy in finishing processes, on the one hand, and the avoidance of preITlature failure by frictional daITlage to ITloving parts on the other. Surface reactions are then considered, including the iITlportant questions of physiological interactions with ceraITlic candidates for prosthetic applica tions. Material-ITlaterial interfaces and transition zones are discussed through exaITlples which include grain bound aries in ceraITlics as well as interfaces aITlong various solid, liquid and gaseous phases. 564 pp. Englisch.