Springer us mai 2012 (245 résultats)

Taschenbuch. Etat : 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. Etat : 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. Etat : 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. Etat : 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. Etat : 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. Etat : 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. Etat : 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. Etat : 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. Etat : 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. Etat : 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. Etat : 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. Etat : 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. Etat : 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. Etat : 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. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The analytical chemist is in the forefront of the race to use computers in laboratory work. The modern laboratory has a large number of instruments churning out information, and mechanized procedures for handling the huge amount of data are imperative. The marriage of instruments and computers is offered as a way of easing the burden on the scientist, as well as optimiz ing the performance of the analytical instruments. Computer systems can be applied to all the major analytical instrument procedures, and many of the leading instrument manufacturers are developing and producing systems for use in the laboratory, both for data acquisition and for control purposes. It is, therefore, timely that the session on computers in analytical chem istry of the Eastern Analytical Symposium, held in November 1968, be published in this series, which has as its aim progress in analytical chemistry. The contents are wide-ranging and include applications to mass spectrometry, X-ray spectrography, nuclear magnetic resonance spectroscopy, gas chroma tography, infrared spectrography, the use of dedicated computers, and the multiple user laboratory. Thanks are due to the authors of the papers and to the session chairmen for their efforts in the production of this very worthwhile addition to the series. 120 pp. Englisch.…

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This volume, the fourth in the series 'The Prostagiandin System', contains most of the presentations at the International School of Pharmacology on 'Drugs Effecting Leukotrienes and other Eicosanoid pathways' held in Erice, Sicily, at the 'Ettore Majorana Center' on 9-20 September 1984. The discovery of a new class of biologically active compounds is always exciting even if at the present time knowledge is advancing very rapidly; this is particu1arly true for the eicosanoids. Evidence for a pivotal role of arachidonic acid as a precursor of mediators and modulators of various cell functions is now weil established. This broad knowledge has stimulated the search for drugs capable of interfering with the eicosanoid system and since the discovery of the mechanism of action of Aspirin, new drugs have become available in order to act more specifica11y not only at the level of different enzymes involved in arachidonic acid conversion but also more selectively at the receptor si tes where the acti ve metaboli tes are effecti ve. In addition to this, several stable synthetic derivatives of endogenous unstable prostanoids mimicking their functions in a variety of physiopatho19gical processes are also of potential therapeutic interest. This volume will certainly help scientists and students wi th different interests related to those diseases that stern from arachidonic acid metabolites interactions in hypersensitivity phenomena and in host defence mechanisms. 408 pp. Englisch.…

Taschenbuch. Etat : 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. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The Sixth Annual International Spring Symposium on Health Sciences, held in Washington, D. C. , in May 1986, brought together over 650 scientists from 19 countries to review and update research on cardiovascular disease. In this volume, which contains 59 chapters, an internationally recognized group of authors con tribute up-to-date accounts of molecular and cellular processes occurring in the vessel wall in atherogenesis and describe approaches to the prevention and treatment of atherosclerosis. The volume is divided into six major sections. Two sections deal with current aspects of lipoprotein metabolism. In Part I, we are alerted to the impact on li poprotein metabolism of structural heterogeneity within the four broad lipoprotein classes. Attention then turns to the components that orchestrate lipoprotein metab olism. Apolipoprotein identities, processing, and functions are described, as are the roles of lipid transfer proteins in plasma lipoprotein remodeling. Hepatic lipase synthesis and secretion are described. In Part II, Nobel Laureates Michael S. Brown and Joseph L. Goldstein describe mutations in the LDL receptor that reveal the functions of its various domains and point out how understanding the LDL receptor has provided a rational basis for its regulation. A discussion of the role of receptors in regulating cholesterol uptake by tissues follows, with emphasis on receptor-ligand interactions. Additional pathways for cholesterol delivery to cells are explored, as are pathways for cholesterol egress. 608 pp. Englisch.…

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Nobel Symposium No 31 on The Impact of Space Science on Man kind was held at Spatind, Norway, September 7 - 12, 1975. Twenty seven leading experts from the United States, the U. S. S. R. and Western Europe attended the Symposium. Four main subjects were discussed: The Impact of Space Science, introduced by Profe. ssor Reimar Lust; The Impact of Space Communica tion, ihtroduced by Dr Joseph Charyk; The Impact of Earth Resources Exploration from Space, introduced by Dr William Nordberg; and The Impact of Space Assisted Meteorology, introduced by Dr Robert M White. This book contains edited summaries of the papers presented at the Symposium and summaries of the discussions. The Symposium was financed by the Nobel Foundation through grants from the Tercentenary Foundation of the Bank of Sweden and organized by a special committee appointed by the Norwegian Nobel Institute. Tim Greve Finn Lied Erik Tandberg vii CONTENTS The Impact of Space Science 1 R. Lust The Impact of Space Science on Mankind (Discussion) 13 T. R. Larsen (ed. ) Satellite Communications 25 J. V. Charyk The Impact of Space Communication (Discussion) 57 G. Rosenberg (ed. ) The Impact of Earth Resources Exploration from Space 67 W. Nordberg The Impact of Earth Resources Exploration from Space 79 (Discussion) E. Tandberg (ed. ) The Environmental Satellite: What It Means for Man 91 R. M. White The Impact of Space Assisted Meteorology (Discussion) 111 E. Tandberg (ed. 136 pp. Englisch.…

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This book deals with the physico-chemical principles underlying ion exchange sorption and chromatog~aphy. It does not cover in any detail the experimental and instrumental aspects of practical separations. The author has developed the subject starting from the synthesis and structure of the ion exchangers employed, through the thermodynamics of sorption selectivity and the equilibrium dynamics of ion sorption, to the kinetics and dynamics of non-equilibrium ion-exchange systems. Throughout this treatment the additional factors arising from the exchange of complex organic ions, as opposed to simple mineral ones, have been interwoven. The author has stressed the application in the separation of organic ions with biological activity, many of which are synthesized in biotechnological processes, and in view of this he uses the expression 'physico-chemical biotechnology.' In practice, however, his in-depth treatment is applicable to any charged organic species with multifunction ality and/or high molecular weight, and is therefore by no means restricted to biologically active materials, and certainly not to those molecules from a biotechnological source. Bearing this in mind, the text has a much wider value than the title may convey. 180 pp. Englisch. …

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Ten years after the publication of the first edition of Flllldmntntais of Food Process Engineering, there have been significant changes in both food science education and the food industry itself. Students now in the food science curric ulum are generally better prepared mathematically than their counterparts two decades ago. The food science curriculum in most schools in the United States has split into science and business options, with students in the science option following the Institute of Food Technologists' minimum requirements. The minimum requirements include the food engineering course, thus students en rolled in food engineering are generally better than average, and can be chal lenged with more rigor in the course material. The food industry itself has changed. Traditionally, the food industry has been primarily involved in the canning and freezing of agriCUltural commodi ties, and a company's operations generally remain within a single commodity. Now, the industry is becoming more diversified, with many companies involved in operations involving more than one type of commodity. A number of for mulated food products are now made where the commodity connection becomes obscure. The ability to solve problems is a valued asset in a technologist, and often, solving problems involves nothing more than applying principles learned in other areas to the problem at hand. A principle that may have been commonly used with one commodity may also be applied to another commodity to produce unique products. 624 pp. Englisch.…

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Since the study of the solid state began it has been necessary to use increasingly refined experimental techniques, of which electron spin resonance is an important example, in the effort to gain information concerning the structure and properties of an immense and varied range of solids. In the last two decades the great commercial demand for solid-state electronic devices has stimulated research into the funda mental properties of semiconductors. At the same time as semiconductor devices were becoming techno logically important, the technique of electron spin resonance was first being used on a large scale, principally at the Clarendon Laboratory, Oxford. Both solid-state physics and electron spin resonance have now reached the stage where they are useful to each other, primarily in the realm of the atomic properties of matter. Dr Lancaster's book is one of a series of monographs that aims at covering as comprehensively as possible the field of electron spin resonance. His book has been written for those who wish to know some thing about the way in which the electron spin resonance technique has been used in the study of semiconductors. It also has value for specialists who may need an authoritative work of reference, and for workers in allied subjects who wish to use this technique to further their work. Much of his treatise deals with electron spin resonance in crystals of silicon and germanium containing specific impurities, as these materials are of greatest interest. Practical results are discussed wherever possible. 164 pp. Englisch.…

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Introduction This book contains papers given at a NATO Advanced Research Institute (A.R.I.) held at Caiscais, Portugal, in November, 1981. The subject of the A.R.I. was marine heterotrophy; this is defined as the process by which the carbon autotrophically fixed into organic compounds by photosynthesis is transformed and respired. Obviously all animals and many microbes are heterotrophs but here we will deal only with the microbes. Also, we restricted the A.R.I. primarily to microbial heterotrophy in the water column even though we recognize that a great deal occurs in sediments. Most of the recent advances have, in fact, been made in the water column because it is easier to work in a fluid, apparently uniform medium. The reason for the A.R.I. was the rapid development of this subject over the past few years. Methods and arguments have flourished so it is now time for a review and for a sorting out. We wish to thank the NATO Marine Science Committee for sharing this view, F. Azam, A.-L. Meyer-Reil, L. Pomeroy, C. Lee, and B. Hargrave for organizational help, and H. Lang and S. Semino for valuable editing aid. 588 pp. Englisch.…

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Mammalian hibernation is commonly thought of as something completely out of the ordinary, a 'unique and unorthodox state.' The present book takes the opposite view. It argues that the physiological achievements of hibernators do not deEend on special mechanisms but on special use of ordinary mechanisms. It is precisely this that makes the hibernators important. If the hibernators de pend on some unique physiological principle their study is that of a biological curio. But if they are using basic mammalian systems in a quantitatively extreme way, then they are a naturally occurring preparation of enormous potential. Hibernation involves every aspect of the animal's biology from fat metabo lism to behavior, from thermoregulation to dental caries; every system in the body is affected in some way or other by hibernation. A comprehensive account of hibernation would be almost coextensive with an account of the whole of mammalian biology. The present book does not attempt to describe everything that has been discovered about hibernation. Excellent coverage for that already exists in the proceedings of three recent symposia and in the other major source materials listed on page 233. There is in fact an enormous amount of information already available. But there is a difference between information and understanding. Despite the increasing volume of research and growing interest in mammalian hibernation, there is little appreciation of the essential characteristics of the phenomena. The pieces of the puzzle lie scattered. 300 pp. Englisch.…

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Courses on the invertebrates have two principal aims: (1) to introduce students to the diversity of animal life and (2) to make them aware that organisms are marvellously integrated systems with evolutionary pasts and ecological presents. This text is concerned exclusively with the second aim and assumes that the reader will already know something about the diversity and classification of invertebrates. Concepts of whole-organism function, metabolism and adaptation form the core of the subject-matter and this is also considered in an ecological setting. Hence, the approach is multi-disciplinary, drawing from principles normally restricted to comparative morphology and physiology ,ecology and evolutionary biology. Invertebrate courses, as with all others in a science curriculum, also have another aim - to make students aware of the general methods of science. And these I take to be associated with the so-called hypothetico deductive programme. Here, therefore, I make a conscious effort to formulate simple, some might say naive, hypotheses and to confront them with quantitative data from the real world. There are, for example, as many graphs in the book as illustrations of animals. My aim, though, has not been to test out the principles of Darwinism, but rather to sharpen our focus on physiological adaptations, given the assumption that Darwinism is approximately correct. Whether or not I succeed remains for the reader to decide. 184 pp. Englisch.…

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -During the translation, the author had the opportunity to re view several chapters, taking into consideration the more recent literature. As far as possible all new theoretical concepts and experi mental data published before 1963 have been quoted and discussed under the theoretical viewpoint of this book. A new chapter 'Passivity and Inhibition During High-Tempera ture Oxidation' was introduced. Section 4.8 was enlarged by a dis cussion of the transition from internal to external oxidation. The author very much appreciates the cooperation of the trans lator and of Plenum Press. Gottingen, April 1.965 Karl Hauffe v Preface The number of publications concerned with oxidation and cor rosion processes has become so copious that many engineers and scientists find it practically impossible to obtain an overall view of the growing body of knowledge and to bring order to the confusing multiplicity of experimental data. As a result the need for a compre hensive survey of the present state of research in this field has be come more and more urgent. 468 pp. Englisch.…

Taschenbuch. Etat : 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. Etat : 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. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Oata Analysis and Synthesis (CINOAS) \* at Purdue. University in 1957, 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 33 (thesis year 1988) a total of 13,273 theses titles from 23 Canadian and 1 85 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 33 reports theses submitted in 1988, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time. 440 pp. Englisch.…

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Due to the ever increasing interest in the use of non-invasive ultrasonic methods in medical diagnostics on the one hand and the specific effects of ultrasound in medical therapy on the other, the questions of safety and optimal applications are topical and of great importance. For this reason the symposium 'Ultrasound Interaction in Biology and Medicine,' initiated and supported by the 'International Organization of Medical Physics,' took place. The organizers were the Institute of Applied Biophysics of the Martin-Luther-University, Halle (Saale), German Democratic Republic, in association with the Society for Physical and Mathematical Biology of the GDR along with other scientific organizations. Renowned and internationally noted specialists in the field of ultrasonics reported on the latest findings regarding the biological interaction of ultrasound, which promised future improvements in the methods of ultrasonic diagnostics and gave and up-to-date insight into the biological effectiveness of ultrasound. We are pleased to be able to publish selected contributions to this symposium collected in one volume. The methods of investigation, theoretical considerations and results concerning the interaction of ultrasound on molecular, cellular and system levels contained herein will remain up-to-date for a long time to come, providing thought provoking material for further inter-disciplinary basic research and medical application. 232 pp. Englisch.…