springer springer jun 1990 (195 resultados)

Buch. Condición: Neu. Neuware - The central themes of this collection of essays are the mystery of time past, present and future, and the problem of redemption. They are concerned with modern literature, with the threat of meaninglessness in the postmodern condition, and with the possibility of salvation. In an age of deferral and difference, this book addresses itself to eschatology and apocalypse, and redemption in, through, but particularly of, time itself. Hell and madness are never far away, yet the refiguration of time and the breaking in of the transcendent continue to suggest theological possibilities beyond the wastelands of the twentieth century. To those possibilities we look in hope.

Buch. Condición: Neu. Neuware - A modern microelectronic circuit can be compared to a large construction, a large city, on a very small area. A memory chip, a DRAM, may have up to 64 million bit locations on a surface of a few square centimeters. Each new generation of integrated circuit- generations are measured by factors of four in overall complexity -requires a substantial increase in density from the current technology, added precision, a decrease of the size of geometric features, and an increase in the total usable surface. The microelectronic industry has set the trend. Ultra large funds have been invested in the construction of new plants to produce the ultra large-scale circuits with utmost precision under the most severe conditions. The decrease in feature size to submicrons -0.7 micron is quickly becoming availabl- does not only bring technological problems. New design problems arise as well. The elements from which microelectronic circuits are build, transistors and interconnects, have different shape and behave differently than before. Phenomena that could be neglected in a four micron technology, such as the non-uniformity of the doping profile in a transistor, or the mutual capacitance between two wires, now play an important role in circuit design. This situation does not make the life of the electronic designer easier: he has to take many more parasitic effects into account, up to the point that his ideal design will not function as originally planned.

Buch. Condición: Neu. Neuware - The institutionalization of History and Philosophy of Science as a distinct field of scholarly endeavour began comparatively early -- though not always under that name -- in the Australasian region. An initial lecturing appointment was made at the University of Melbourne imme diately after the Second World War, in 1946, and other appointments followed as the subject underwent an expansion during the 1950s and 1960s similar to that which took place in other parts of the world. Today there are major Departments at the University of Melbourne, the University of New South Wales and the University of Wollongong, and smaller groups active in many other parts of Australia and in New Zealand. 'Australasian Studies in History and Philosophy of Science' aims to provide a distinctive publication outlet for Australian and New Zealand scholars working in the general area of history, philosophy and social studies of science. Each volume comprises a group of essays on a connected theme, edited by an Australian or a New Zealander with special expertise in that particular area. Papers address general issues, however, rather than local ones; parochial topics are avoided. Further more, though in each volume a majority of the contributors is from Australia or New Zealand, contributions from elsewhere are by no means ruled out. Quite the reverse, in fact -- they are actively encour aged wherever appropriate to the balance of the volume in question.

Buch. Condición: Neu. Neuware - Concern over the effects of chemicals in the environment has been increasing for many years. Environmental contamination by DDT, Aldrin, Dieldrin, mercury, PCBs, organotins and many other sub stances are all part of the public consciousness and have led to widespread attention to this topic. Some of the concerns have arisen because human health has been affected when contaminants have been consumed via the food chain-for instance in the case of 'Minimata disease' in Japan. In other cases, direct effects on other components of ecosystems have given cause for alarm. The toxic effects which any chemical can cause are a function of exposure and innate toxicity, i.e. of the ability to reach in sufficient quantity a site where a biological process can be disrupted and of the tendency to cause disruption when it gets there. The processes by which chemicals reach sites of toxic action are the subject of this book, and are a fundamental consideration in ecotoxi cology. When a chemical enters the environment e.g. via a spillage or in an effluent, it is potentially subject to a wide variety of processes which may eliminate it from the environment completely, modify it into a more or less harmful substance, or transfer it to another part of the environment. The processes involved are complex and highly variable, but it is essential to increase our understanding of them.

Buch. Condición: Neu. Neuware - During the last ZO years great progress has been achieved in our understanding of both earth history and vertebrate evolution. The result is that climatic/tectonic events in earth history can now be placed in a more precise and global time frame, that permit their evaluation as abiotic causal factors which might trigger extinction and dispersal events in vertebrate history. Great strides have also been made in genetics and cell biology, providing new insight into phylogenetic relationships among many vertebrates. These new data, along with data on chronologie resolution of earth history, provide tests of previous interpretations regarding ancestral-descendant relationships based solely on the fossil record. It is fitting and proper that a volume on European Neogene mammal chronology is produced at this time, to ensure that new interpretations of vertebrate evolution and chronology are based on the most accurate and current data. Vertebrate paleon tologists believe that the fossil record is the only secure data for measuring the actual course and tempo of vertebrate evolution. Knowledge of the fossil record must keep pace with advances in other areas of science so that inferences on vertebrate evolu tion are accurate and meaningful.

Buch. Condición: Neu. Neuware - The immunology of mucosal surfaces is one of the most exciting and relevant areas of medical veterinary and dental research since it applies basic research to tissues in volved in everyday defence against microbes and against environmental and food antigens. This book is based on the contributions presented at the International Con gress of Mucosal Immunology, held in London in July 1989 and organised by the Mu cosal Immunology Affinity Group of the British Society for Immunology. The meet ing was attended by over 500 delegates from 27 countries, including virtually all of the leading investigators in the field. The contents give comprehensive and up-to date information on such topics as antigen presentation and processing in the gut, mucosal vaccines in man and animals, HIV infection in the gut, the role of yo T cells in the gut epithelium, recent advances in inflammatory bowel disease and coeliac dis ease, the role of cytokines in the regulation of the IgA response, mucosal mast cells and cell migration. The contributions reflect the rapid pace of research in mucosal immunology, and the great strides which are taking place in the understanding of the immunology, molecular biology and biochemistry of host response at mucosal sur faces.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Since the subject of Groups of Self-Equivalences was first discussed in 1958 in a paper of Barcuss and Barratt, a good deal of progress has been achieved. This is reviewed in this volume, first by a long survey article and a presentation of 17 open problems together with a bibliography of the subject, and by a further 14 original research articles. 228 pp. Englisch, Französisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This monograph studies algebras that are associated to blocks of tame representation type. Over the past few years, a range of new results have been obtained and a comprehensive account of these is provided here to- gether with some new proofs of known results. Some general theory of algebras is also presented, as a means of understanding the subject. The book is addressed to researchers and graduate students interested in the links between representations of finite-dimensional algebras and modular group representation theory. The basic properties of modules and finite-dimensional algebras are assumed known. 340 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -A Safety Considerations Genomie sequencing involves a number oj hazard ous steps, such as high eurrent, high voltage, radioaetive and highly toxie chemieals. It is, the- jore, absolutely essential that the instruetions oj equipment manu/aeturers bejollowed and that par tieular attention is paid to the loeal and jederal safety regulations. I Introduction 13 B Introduction Hypomethylation ofDNA has been positively correlated with thc activation of many eucaryotic genes. During the transition from inactive to active genes changes in the protein/DNA interaction pattern occur. Tran scriptional activation of eucaryotic genes is mediated by specific interac tions oftransacting factors with their respective DNA binding sites in Lhe control regions (promoters, enhancers) ofthe genes. This process is ofLen accompanied by changes in local chromatin strucLure, witnessed by the appearance of nuclease hypersensitive sites, as weil as by changes in protein-DNA interactions and, in the case of higher eucaryotes, alterations ofthe cytosine methylation pattern. The sole available experimental tech nique that permits the study ofthe latter phenomena at single nucleotide resolution is direct genomic sequencing/footprinting, pioneered by Church and Gilbert (1984). This method combines the chemical DNA sequencing procedure of Maxam amI Gilbert (1980) with thc detection 01' DNA sequences by electroblotting and indirect end-Iabeling by hybridiza tl0n. An alternative possibility is the novel procedure (Saluz and . lost, 1989), using Taq polymerase. The first steps 01' both meLhods are essen tially the same: total genomic DNA is digested wiLh a suilable restriction enzyme and the resulting DNA fragments are chemically sequeneed. 288 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -'An interesting and enlightening book well worth the time for someone who is grounded in the basics of spectroscopy, yet interested in newer techniques and applications. particularly useful in providing breadth for those whose work has caused them to narrow their appreciation of spectroscopy to one area.' (Spectroscopy) 'This book should be on the bookshelves of all chemists whose daily work involves the practical application of spectroscopy to chemical analysis.' (Fresenius' J. of Analytical Chem.) '.stands in style between an introduction to the various topics covered and near monographic treatments.meets a real need.' (Faraday Transactions) 'It covers an enormous amount of spectral theory and methodology in a condensed and readable format.' (SIM News) 340 pp. Englisch.

Buch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -'Et moi . si j'avait su comment en revenir, One service mathematics has rendered the je n'y serais point aIle.' human race. It has put common sense back Jules Verne where it belongs. on the topmost shelf next to the dusty canister labelled 'discarded non The series is divergent; therefore we may be sense'. able to do something with it. Eric T. Bell O. Heaviside Mathematics is a tool for thought. A highly necessary tool in a world where both feedback and non linearities abound. Similarly, all kinds of parts of mathematics serve as tools for other parts and for other sciences. Applying a simple rewriting rule to the quote on the right above one finds such statements as: 'One service topology has rendered mathematical physics . .'; 'One service logic has rendered com puter science . .'; 'One service category theory has rendered mathematics . .'. All arguably true. And all statements obtainable this way form part of the raison d'etre of this series. 250 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -CRYPTO is a conference devoted to all aspects of cryptologic research. It is held each year at the University of California at Santa Barbara. Annual meetings on this topic also take place in Europe and are regularly published in this Lecture Notes series under the name of EUROCRYPT. This volume presents the proceedings of the ninth CRYPTO meeting. The papers are organized into sections with the following themes: Why is cryptography harder than it looks , pseudo-randomness and sequences, cryptanalysis and implementation, signature and authentication, threshold schemes and key management, key distribution and network security, fast computation, odds and ends, zero-knowledge and oblivious transfer, multiparty computation. 652 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -IA U Symposium Number 141 'Inertial Coordinate System on the Sky' was held in Leningrad, USSR from 17-21 October 1989. The symposium also commemorated the 150th anniversary of the founding of Pulkovo Observatory. The scientific program was presented in ten half-day sessions. Most sessions were held at the Pulkovskaya Hotel, but one session which highlighted Pulkovo's current programs was held at Pulkovo Observatory. The sessions were organized into general categories pertaining to the legacy of Pulkovo for inertial systems; current programs at Pulkovo Observatory; concepts, definitions and models; and the realization and comparision of reference frames. More than 140 scientific papers were presented, either orally or in poster form. Extensive use was made of electronic mail and computer-readable communications, and more than two-thirds of the authors made use of the opportunity to submit papers for formatting by the editors. The meeting was truly a symposium in the Greek sense of the word-a free-flowing exchange of ideas and opinions. The final two papers presented at the symposium by Wilkins and by Westerhout are presented at an eady stage in the published proceedings, in order to help focus the reader's attention on the concepts and problems explored in subsequent papers. As pointed out by G. 568 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -SNePS is a state-of-the-art knowledge representation and reasoning system used for artificial intelligence and cognitive science research. It is a semantic network based system designed by the members of the SNePS Research Group. The First Annual SNePS Workshop was held on November 13, 1989, at the State University of New York at Buffalo. The aims of the workshop were to bring together researchers in AI working with or interested in SNePS. Twelve papers were presented by people from seven different research sites in the United States and abroad. The papers are of top quality and cover areas of ongoing research displaying the versatility of SNePS as an AI research tool. This volume contains all twelve papers. 176 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The general problem studied by information theory is the reliable transmission of information through unreliable channels. Channels can be unreliable either because they are disturbed by noise or because unauthorized receivers intercept the information transmitted. In the first case, the theory of error-control codes provides techniques for correcting at least part of the errors caused by noise. In the second case cryptography offers the most suitable methods for coping with the many problems linked with secrecy and authentication. Now, both error-control and cryptography schemes can be studied, to a large extent, by suitable geometric models, belonging to the important field of finite geometries. This book provides an update survey of the state of the art of finite geometries and their applications to channel coding against noise and deliberate tampering. The book is divided into two sections, 'Geometries and Codes' and 'Geometries and Cryptography'. The first part covers such topics as Galois geometries, Steiner systems, Circle geometry and applications to algebraic coding theory. The second part deals with unconditional secrecy and authentication, geometric threshold schemes and applications of finite geometry to cryptography. This volume recommends itself to engineers dealing with communication problems, to mathematicians and to research workers in the fields of algebraic coding theory, cryptography and information theory. 240 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Neural Networks have been the theater of a dramatic increase of activities in the last five years. The interest of mixing results from fields as different as neurobiology, physics (spin glass theory), mathematics (linear algebra, statistics . ), computer science (software engineering, hardware architectures . ) or psychology has attracted a large number of researchers to the field. The perspective of dramatic improvements in many applications has lead important companies to launch new neural network programs and start-ups have mushroomed to address this new market. Throughout the world large programs are being set-up: in Japan the government has committed more than $18 million per year to its 20 year Human Frontier Science program; the DARPA and the US Navy have alloted more than $10 million per year each and other US government agencies are contributing to important but less ambitious programs. Neural networks are also a major research are in the supercomputing initiative. Europe has from the beginning taken an active part in funding major projects in the new field with BRAIN, BRA, ANNIE and PYGMALION (Esprit). Approximately $20 million has been invested to date since 1988 and new programs of nearly $30 million are being funded for the next 3 years. National projects in certain countries may globally double these amounts. Neural network conferences are attracting larger audiences than ever before. Prior to 1987 attendance never surpassed 300. The June 1989 IJCNN conference in Washington had over 2200 participants. 596 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -(Cartan sub Lie algebra, roots, Weyl group, Dynkin diagram, . . . ) and the classification, as found by Killing and Cartan (the list of all semisimple Lie algebras consists of (1) the special- linear ones, i. e. all matrices (of any fixed dimension) with trace 0, (2) the orthogonal ones, i. e. all skewsymmetric ma trices (of any fixed dimension), (3) the symplectic ones, i. e. all matrices M (of any fixed even dimension) that satisfy M J = - J MT with a certain non-degenerate skewsymmetric matrix J, and (4) five special Lie algebras G2, F , E , E , E , of dimensions 14,52,78,133,248, the 'exceptional Lie 4 6 7 s algebras' , that just somehow appear in the process). There is also a discus sion of the compact form and other real forms of a (complex) semisimple Lie algebra, and a section on automorphisms. The third chapter brings the theory of the finite dimensional representations of a semisimple Lie alge bra, with the highest or extreme weight as central notion. The proof for the existence of representations is an ad hoc version of the present standard proof, but avoids explicit use of the Poincare-Birkhoff-Witt theorem. Complete reducibility is proved, as usual, with J. H. C. Whitehead's proof (the first proof, by H. Weyl, was analytical-topological and used the exis tence of a compact form of the group in question). Then come H. 176 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This volume contains the invited lectures and selected papers from the Third International Conference on Computer Assisted Learning. The contributions cover a wide range of theoretical and practical topics, including knowledge acquisition, intelligent computer assisted instruction, microworlds, media-based CAL, hypermedia environments and instruction, student modeling, evaluation of learning environments, simulation tools, application systems for logic, discourse, visual programming, physiology, structural frames, real time measurement, automotive maintenance, flight training, and implementation of CAL in distance education in various countries. For those active or interested in computer assisted learning, particularly at the post-secondary level, these proceedings provide an up-to-date and international review of important accomplishments in the area. 480 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This volume presents the proceedings of a workshop at which major Parallel Lisp activities in the US and Japan were explained. Work covered includes Multilisp and Mul-T at MIT, Qlisp at Stanford, Lucid and Parcel at Illinois, PaiLisp at Tohoku University, Multiprocessor Lisp on TOP-1 at IBM Tokyo Research, and concurrent programming in TAO. Most papers present languages and systems of Parallel Lisp and are in particular concerned with: - Language constructs of Parallel Lisp and their meanings from the standpoint of implementing Parallel Lisp systems; - Some important technical issues such as parallel garbage collection, dynamic task partitioning, futures and continuations in parallelism, automatic parallelization of Lisp programs, and the kernel concept of Parallel Lisp. Some performance results are reported that suggest practical applicability of Parallel Lisp systems in the near future. Several papers on concurrent object-oriented systems are also included. 380 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Dermatology is a fascinating subject. This is a statement you might expect from a dermatologist, but what is the justification It is a highly clinical specialty and sophisticated techniques of diagnosis are very much of secondary importance compared with clinical skills. The skin is important not only as an organ with vital physiological functions but also as a flag by which we communicate with the outside world. A perfect skin is desired by all, and upon this wish is based the multi-million pound cosmetics industry. Skin disease therefore places a strain on sufferers out of proportion to the disturbances in function which the pathology produces. A 'leper' complex is frequent, and social and sexual contact may be shunned because of the embarrassment caused. It is also easy to overlook the contribution that cutaneous physical signs make towards diagnoses of internal disorders. Even straightforward factors such as the pallor of anaemia, the icterus of biliary obstruction or, quite simply, the age and sex of the patient are recognised immediately from visible signs in the skin. Like most other organs the skin has a limited repertoire of reactions, but these can occur in patients of all ages, combined together in an almost infinite number of permutations; hence the fascination referred to above. It has been estimated that 10% of consultations with general practioners are because of a skin-related problem, and therefore a working knowledge of dermatology is essential for anyone who has regular clinical contact with patients. 112 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This collection of papers gives a representative cross-selectional view of recent developments in the field. After a survey paper by C. Lefèvre, 17 other research papers look at stochastic modeling of epidemics, both from a theoretical and a statistical point of view. Some look more specifically at a particular disease such as AIDS, malaria, schistosomiasis and diabetes. 216 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Beginning from scratch and developing the standard topics of Linear Algebra, this book is intended as a text for a first course on the subject. The goal to which this work leads is the Theorem of Hurwitz - that the only normed algebras over the real numbers are the real numbers, the complex numbers, the quaternions, and the octonions. Unique in presenting this material at an elementary level, the book stresses the complete logical development of the subject and will provide a bavuable reference for mathematicians in general. 184 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Drug use by adolescents is usually viewed as the result of personal vulnerability to peer pressures and drug pushers. This book provides a new perspective, which is sociological rather than epidemiological, understanding patterns of drug taking in the context of ordinary social interaction. In this social worlds analysis, adolescents' own concerns with boredom, depression, social identity, friendship, access to drugs, self-control and folk pharmacology replace the professionals' focus on deviant behaviour. 301 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Since the subject of Groups of Self-Equivalences was first discussed in 1958 in a paper of Barcuss and Barratt, a good deal of progress has been achieved. This is reviewed in this volume, first by a long survey article and a presentation of 17 open problems together with a bibliography of the subject, and by a further 14 original research articles.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 228 pp. Englisch.

Buch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Sixteen contributions cover such topics as the polymerase chain reaction; regulation of alternative splicing; human retinoblastoma susceptibility gene; control of translation initiation in mammalian cells; the utility of streptomycetes as hosts for gene cloning; folding of eukaryotic proteins produc 360 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -This monograph studies algebras that are associated to blocks of tame representation type. Over the past few years, a range of new results have been obtained and a comprehensive account of these is provided here to- gether with some new proofs of known results. Some general theory of algebras is also presented, as a means of understanding the subject. The book is addressed to researchers and graduate students interested in the links between representations of finite-dimensional algebras and modular group representation theory. The basic properties of modules and finite-dimensional algebras are assumed known.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 340 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This book contains the proceedings of the sixth Eurographics Workshop on Vir tual Environments. The event took place from June 1 to June 2, 2000, in Am sterdam. We hope that readers will find these proceedings to be valuable, not only for virtual environment researchers, but also for practitioners developing or using virtual environment applications. We are glad to report that visibility of the workshop continues to expand and that virtual environment researchers and practitioners from allover the world are submitting papers. This year, 40 papers and case studies were submitted of which 20 were accepted. In addition, we are glad to see that the focus of the workshop is also expanding. We accepted 6 research papers on evaluation of virtual environments and there was a broad sampling of other topics. We would like to thank all those involved in organizing the symposium. In particular, thanks go to Mieke Brune who was in charge of the local organization. In addition, we want to thank the international program committee for their excellent, yet laborious, job in reviewing all submitted papers. The quality of the workshop is a reflection of the quality of the submitted papers and the quality of the reviewing process. 572 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -When the eyeball is indented in total darkness, within less than 200 mil liseconds an oval or quarter-moon shaped spot of light is perceived in the part of the visual field corresponding to the indented region of the retina. In the seconds following, this phosphene extends across the whole visual field and alters in structure during further eyeball indentation. It is then seen as irregular large bright spots of light, finely structured moving light grains ('light nebula') and stationary bright stars. Regular geometrical patterns appear only when both eyes are indented simultaneously [1]. When the eyeball deformation is released, part of the retina again lights up for another one or two seconds and curved light lines are seen following the course of the larger retinal vessels (Fig. 1). In the following we will review the history of this phenomenon, which played an important role during the first 2200 years of vision theories and in the development of models to explain normal vision. 2. Pre-Socratic philosophers, Plato and Aristotle Alcmaeon of Croton (6-5th century B. C. ), who was a member of the Pythagoraean sect and one of the founders of Greek medicine, was the first to describe mechanical deformation of the eyeball leading to light sensa tions. According to Aristotle's pupil Theophrast of Eresos, Alcmaeon report ed that 'the eye obviously has fire within,for when the eye is struckfireflashes out' [2, p. 88]. 160 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -A special meeting of the Royal Society in London in 1986 marked the centenary of the first demonstration of nitrogen fixation. Currently the subject is of great practical importance because the use of nitrogenous fertilizers has resulted in unacceptable levels of water pollution; also these fertilizers are becoming steadily less economic both in cash terms and in utilization of fossil fuels for their manufacture. The number of papers published and the frequency of national and international meetings to discuss research into nitrogen fixation have both increased steadily during the 1970s and 1980s. Specialist monographs and review papers are often too detailed to be of real use to undergraduates in biology or related areas such as agriculture and forestry, and even for graduates and research workers newly entering the field of nitrogen fixation. For people in these categories, the senior author wrote The Biology of Nitrogen-fixing Organisms published by McGraw Hill in 1979. This book has similar aims. It incorporates new findings that have not only resolved some of the uncertainties reported in that earlier text hut, more importantly, it reflects the influence on the subject of recent developments in biochemistry, molecular biology, genetic engineering and other biotechnologies. We have devoted more attention to quantitative aspects of the subject, but unfortunately the many practical difficulties for accurate field assessment of nitrogen fixation and its contribution to nitrogen cycles means that many assessments are either in contlict with each other or must be accepted as tentative. 268 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -A special meeting of the Royal Society in London in 1986 marked the centenary of the first demonstration of nitrogen fixation. Currently the subject is of great practical importance because the use of nitrogenous fertilizers has resulted in unacceptable levels of water pollution; also these fertilizers are becoming steadily less economic both in cash terms and in utilization of fossil fuels for their manufacture. The number of papers published and the frequency of national and international meetings to discuss research into nitrogen fixation have both increased steadily during the 1970s and 1980s. Specialist monographs and review papers are often too detailed to be of real use to undergraduates in biology or related areas such as agriculture and forestry, and even for graduates and research workers newly entering the field of nitrogen fixation. For people in these categories, the senior author wrote The Biology of Nitrogen-fixing Organisms published by McGraw Hill in 1979. This book has similar aims. It incorporates new findings that have not only resolved some of the uncertainties reported in that earlier text hut, more importantly, it reflects the influence on the subject of recent developments in biochemistry, molecular biology, genetic engineering and other biotechnologies. We have devoted more attention to quantitative aspects of the subject, but unfortunately the many practical difficulties for accurate field assessment of nitrogen fixation and its contribution to nitrogen cycles means that many assessments are either in contlict with each other or must be accepted as tentative.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 268 pp. Englisch.