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3 387 produkter
3 387 produkter
534 kr
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The contribution of bacteriophages to the development of modern biology cannot be overestimated yet, sixty years after their discovery, they are as remote and mysterious to many scientists as they are to most laymen. This book endeavours to remedy the situation: an attempt has been made to provide, in readily comprehensible form, a nucleus of information essential to anyone embarking on the study of bacteriophages or using them in their work for the first time. It shows the range of bacteriophage structure and behaviour; it illustrates the role of bacteriophage in molecular biology; it surveys the current state of the art; it presents the medical and industrial aspects. Some simple experimental procedures are given in sufficient detail for the beginner to attempt them successfully. Other, more sophisticated pro- cedures are presented so as to impart a feeling of intimate reality without dazzling the reader with technical complexity. I hope that young readers will forgive me for assuming that they have some knowledge of bacteria, nucleic acids, antibodies and isotopes. Likewise I would ask mature workers to excuse the omission of cherished specialities.To have included all these, valuable though they are, might have put this book beyond the re ach of the phage-novices for whom it is intended. Specific references, save a few of particular interest, have been omitted. Other books on bacteriophage v vi BACTERIOPHAGES provide them in abundance.
3 172 kr
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During the many years of its publication and subsequent revisions, Paul Jellinek's book has been the standard work on its subject. This new edition, translated into English for the first time, was conceived in response to the increased interest in recent years in perfumes and the sense of smell. This interest has come not only from within the highly competitive perfumery industry, but also from psychologists and market researchers. The original text has impressively withstood the test of time and the approach of this new book has been to supplement it with chapters that are now of critical importance, but which were only touched upon in the original book. A market researcher looks at why people use perfumes; a psychologist examines the motivation of perfume choice; another psychologist discusses odours and a perfumer looks at the effects of odours on human experience and behaviour. In the final chapter the editor compares the original author's views with those of today's experts and suggests which aspects are still valid and in what areas divergent views now prevail. This book is written principally to provide a scientific basis to the craft of perfumery and to enable formulators and marketeers to understand why the smells they create and sell have the effect they do. It allows a systematic approach to the development of these products. Others outside the industry, including psychologists in academia, will find the book an essential reference source.
2 117 kr
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This comprehensive volume provides an overview of the rapidly expanding field of intelligent computers, explaining what a 'smart' robot is, how it is selected and what must be done to operate such a system. It is designed to help the reader develop an understanding of the industrial applications of smart robots as well as the new technological developments and future trends. This book should be of interest to computer scientists and engineers.
550 kr
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The Apple Macintosh Encyclopedia provides easily accessible, brief and understandable information on the topics that you are most likely to have questions about. We have carefully digested the manuals, books, magazine articles, and other information sources for the Macintosh. These, combined with our own experience in using the Macintosh and other personal computers, have been integrated into an alphabetical sequence of short entries in the style of an encyclopedia. The goal is to provide concise, useful and easy-to-understand information on a particular topic that is quickly accessible when you need it. Much of the information in the entries is not contained in the manuals provided with the Macintosh and various software products. For example, notice the discussion, under WIDTH, of the "deferred" nature of this command when used with a device name, the discussion of the colon (:) in Multiplan for ranges, or Saving, Problems With. These topics are omitted or inadequately covered in the standard manuals. The Macintosh is the first truly visual computer. In keeping with the highly visual nature of using the Macintosh, we have provided over 100 illustrations. Each shows exactly what you will see on the screen when exploring topics discussed in the text. The Macintosh Encyclopedia opens with a visual guide to icons, and remains highly visual in orientation throughout the text.
Computer Work Stations
A Manager’s Guide to Office Automation and Multi-User Systems
Häftad, Engelska, 1985
550 kr
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Most of us do not realize that we are living in revolutionary times. To a large degree, we are in a time of massive economic and industrial change, and perhaps history will one day record this era as the Second Industrial Revolution. Certainly we have been made aware of the decline of "smoke stack industries" and of the rapid rise of what might be called the "infor mation industries" in the United States and, presumably, in most of the western world. Several best-selling authors have assured us that we must change or perish, and a great many industrialists appear to agree. Ironically, we have also been all but promised a return to a modern form of that very cottage industry economy that the first Industrial Revolution wiped out: Some of our leading savants envision individuals working at home on desktop computers, connected via hardwire (telephone) to an employer's large, central computer. Will this come to pass? Perhaps; the industrial/economic indicators appear to point in that direction, although there are the problems of numerous laws and regulations -labor laws and OSHA laws, to name only two areas, and ignoring for the moment the reaction of our labor unions - that would be most difficult to reconcile with such an arrangement. In a sense, it is the computer that has brought about this condition.
1 062 kr
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This book should be of interest to air pollution engineers, public health authorities, chemical engineers.
1 589 kr
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This book should be of interest to students and practitioners of materials science, production engineering, and engineering and design.
2 117 kr
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This book should be of interest to designers and procirers of automated systems in all engineering fields (electrical, mechanical, optical and automotive engineering).
1 094 kr
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The Apple / / series of computers represents one of the most versatile and powerful home computers available. If you've used your computer for a while, you've probably become quite familiar with Applesoft BASIC. That's good, because once you know that, this book will show you how to graduate from BASIC programming to assembly language programming. There are many reasons to program your Apple in assembly language. First and foremost is speed. Assembly language is about 100 times faster than BASIC. If you're thinking of writing games or business programs that do sorting, speed is of the essence and assembly language is a must. Assembly language programs usually also require less memory. Thus you can squeeze more complex programs into a smaller amount of memory. Finally, assembly language programs offer you a considerable amount of security, because they are more difficult to trace and change. While assembly language is powerful, it doesn't have to be difficult to learn. In fact, if you can write programs in Applesoft BASIC, you're already half-way home. This book assumes you know BASIC and absolutely nothing about assembly language or machine language. Every effort has been made to write in nontechnical language and to set the chapters out in a logical manner, introducing new concepts in digestible pieces as and when they are needed, rather than devoting whole chapters to specific items.
1 589 kr
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Manufacturing has entered the early stages of a revolutionary period caused by the convergence of three powerful trends: • The rapid advancement and spread of manufacturing capabilities worldwide has created intense competition on a global scale. • The emergence of advanced manufacturing technologies is dramati cally changing both the products and processes of modern manufac turing. • Changes in traditional management and labor practices, organiza tional structures, and decision-making criteria represent new sources of competitiveness and introduce new strategic opportunities. These trends are interrelated and their effects are already being felt by the u.s. manufacturing community. Future competitiveness for manu facturers worldwide will depend on their response to these trends. Based on the recent performance of u.s. manufacturers, efforts to respond to the challenges posed by new competition, technology, and managerial opportunities have been slow and inadequate. Domestic markets that were once secure have been assailed by a growing number of foreign competitors producing high quality goods at low prices. In a number of areas, such as employment, capacity utilization, research and development expenditures, and capital investment, trends in u.s. manufacturing over the last decade have been unfavorable or have not kept pace with major foreign competitors, such as Japan. There is substantial evidence that many u.s. manufacturers have neglected the manufacturing function, have overemphasized product development at the expense of process improvements, and have not begun to make the adjustments that will be necessary to be competitive.
2 117 kr
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"Evolutionary Perspectives in Chemical Ecology" provides a comprehensive view of insect chemical ecology from an evolutionary perspective, showing how natural selection acts upon interacting organisms and how particular physical and biological properties of chemical compounds act as constraints upon which natural selection may operate. Individual chapters raise specific questions as to the nature of these interactions. The first part contains reviews on antagonistic and mutualistic chemical interactions, the "raw materials" of defensive chemicals and neurobiology. The second part discusses particular problems such as the evolution of resistance, insect pollination, learning, pheromones, sequestration of semiochemicals, the role of microorganisms, sex attractants, the evolution of host races and biotypes, and the role of semiochemicals and the evolution of sociality of insects. The last chapter discusses the role of chemical-based pest management programs in an ecological and evolutionary framework. This book should be of interest to those involved in ecology and evolution.
2 117 kr
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"Evolutionary Perspectives in Chemical Ecology" provides a comprehensive view of insect chemical ecology from an evolutionary perspective, showing how natural selection acts upon interacting organisms and how particular physical and biological properties of chemical compounds act as constraints upon which natural selection may operate. Individual chapters raise specific questions as to the nature of these interactions. The first part contains reviews on antagonistic and mutualistic chemical interactions, the "raw materials" of defensive chemicals and neurobiology. The second part discusses particular problems such as the evolution of resistance, insect pollination, learning, pheromones, sequestration of semiochemicals, the role of microorganisms, sex attractants, the evolution of host races and biotypes, and the role of semiochemicals and the evolution of sociality of insects. The last chapter discusses the role of chemical-based pest management programs in an ecological and evolutionary framework. This book should be of interest to those involved in ecology and evolution.
3 172 kr
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It is now known that over 90 percent of all plants have established integrative plant-fungal processes in their root systems, and it may well turn out to be the case that virtually all plants have mycorrhizae. In this new work, many of the best researchers in the field review the current status of research in plant-fungal communications, mycorrhizal organisms, applications and biotechnology. The focus is a hierarchical one. The volume covers both ectomycorrhizae and vesicular-arbuscular (VA) mycorrhizae, addressing concepts that are related to all the different groups.
1 589 kr
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During the last 15 years, the ability to capture and distribute human decision-making skills on a desktop computer has created new possibilities for the management of many types of resources. The resource may be monetary, social, natural or economic. Computer programs that function with a certain degree of skill in solving problems are referred to as expert systems or knowledge systems. Natural resource management appears to be particularly well suited to these types of decision aids. As a result, there is a growing demand for personnel trained in knowledge system development. This guide attempts to cover the major areas which a conservation biologist or research manager requires in order to apply knowledge systems: knowledge acquisition; building a prototype; moving to a final system; knowledge validation; and implementation. Of particular interest is a section discussing the features of a resource management problem appropriate, or inappropriate, for an expert system application.
5 281 kr
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This treatment of the chemistry of secondary processes reviews all the major classes of plant natural products: fatty acids, actylenes, hydrocarbons, ketides, quonines, propanoids, coumarins, flavonoids, tannins, amino acids, peptides, carbohydrates, lipids, terpenes, and alkoloids. An extensive bibliography and an appendix on biochemical plant taxonomy is included. This book should be of interest to departments of agronomy, anthropology, biochemistry, biology, botany, chemistry, ecology, entomology, food science, forestry, geology, horticulture, pharmacognosy, plant biology, plant sciences, toxicology, and zoology.
3 172 kr
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Sex ratio, the proportion of a progeny that is female, is an extremely important fitness trait. It is particularly interesting in relation to haplodiploidy, a variety of parthenogenesis in which organisms reproduce without the benefit of fertilization. This study arrives at conclusions drawn from new empirical studies: that biased sex ratios are characteristic of haplodiploid species; that these species are characteristically colonizing species with genetics suited both to spatially and temporally unpredictable environments; that manipulation of haplodiploid biological control agents, or pests that are to be controlled, depends on understanding the determinants of sex ratio; and that because evolutionary theory predicts that haplodiploids have the capacity to evolve faster than diploid organisms, haplodiploid species are the organisms of choice in biological control strategies.
1 062 kr
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Sex ratio, the proportion of a progeny that is female, is an extremely important fitness trait. It is particularly interesting in relation to haplodiploidy, a variety of parthenogenesis in which organisms reproduce without the benefit of fertilization. "Evolution and Diversity of Sex Ratio" arrives at several important conclusions drawn from new empirical studies: that biased sex ratios are characteristic of haplodiploid species; that these species are characteristically colonizing species with genetics suited both to spatially and temporally unpredictable environments; that manipulation of haplodiploid biological control agents, or pests that are to be controlled, depends on understanding the determinants of sex ratio; and that because evolutionary theory predicts that haplodiploids have the capacity to evolve faster than diploid organisms, haplodiploid species are the organisms of choice in biological control strategies. An extensive collection of data is included in this book to support authors' assertions. This book should be of interest to scientists working in applied entomology, researchers and graduate students interested in evolutionary biology, genetics and evolution.
2 117 kr
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The application of molecular techniques is rapidly transforming the study of plant systematics. The precision they offer enables researchers to classify plants that have not been subject to rigorous classification before and thus allows them to obtain a clearer picture of evolutionary relationships. This book is arranged both conceptually and phylogenetically to accommodate the interests not only of general systematists, but also those of people interested in a particular plant family. The first part discusses molecular sequencing; the second reviews restriction site analysis and the sequencing of mitochondrial DNA. A third section details the analysis of ribosomal DNA and chloroplast DNA. The following section introduces model studies involving well-studied families such as the onagraceae, compositae and leguminosae. The book concludes with a section addressing theoretical topics such as data analysis and the question of morphological vs. molecular data. This book should be of interest to advanced undergraduates and graduate students in botany systematics and biology, and those agricultural departments interested in plant breeding and evolution of crop plants.
5 809 kr
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The topic of biomonitoring or bioassessment and testing is a vital and rapidly growing field. In "Freshwater Biomonitoring and Benthic Macroinvertebrates", a number of international experts review recent advances in the field. The book includes reference material on the history of biomonitoring with invertebrates and surveys the literature available on the subject. It also contains work of a more practical nature. The design, implementation, analysis and interpretation of benthic surveys are discussed in detail, as are toxicity testing and field experiments. This book should be of interest to professional entomologists, invertebrate zoologists, and aquatic zoologists, as well as those working in the fields of environmental biotechnology, environmental quality, or marine habitats.
1 589 kr
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Every year between three and four hundred papers are published on the topic of insulin action. This extraordinary publication rate prevents any author from includ ing an exhaustive bibliography in any review or book. Perhaps due to this there is no single text that attempts to cover the effects and the mechanism of action of insulin. This book is such an attempt. I intend to present a review of the physiological effects of insulin, the pathology of defects in the action of insulin, and the current views on the mechanism of action of this hormone. I make no apology for the fact that the bibliography will not be extensive and that the amount of experimental detail and data discussed will be kept to a relevant minimum. This book is not intended for the expert in the field, but for the second- or third-year undergraduate and graduate student of medicine, biochemistry, physiology or related disciplines, and will be valuable as a reference source for research workers. The book is presented as a guide, a summary of the ideas and facts; it will present a reader with a foretaste of a fascinating and ever-changing field. I have attempted to be up-to-date with published research work. Any significant contributions to the field not included in the first draft have been added as footnotes. I assume a basic knowledge of the metabolic pathways of carbohydrates, fats and proteins.
1 800 kr
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This book really began in 1980 with our first microcomputer, an Apple II +. The great value of the Apple II + was that we could take the computer programs we had been building on mainframe and mini-computers, and make them available to the many fisheries biologists who also had Apple II + 's.
3 172 kr
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Planthoppers include some of the most devastating pests of major agricultural crops throughout the world. One species, the rice brown planthopper, is among the most economically important pests in Asia. In past decades, government policies encouraged the control of rice planthoppers with synthetic pesticides, a tactic which promoted insecticide resistance and often led to the pesticide-induced resurgence of pest populations. To deter planthopper outbreaks, a more ecologically sound management strategy is being implemented, one based on a thorough investigation of population dynamics, natural enemies, and the genetics of host plant and insecticide adaptation. In the natural habitats of North America and Europe, scientists have also used planthoppers as model organisms to test ecological and evolutionary theory. The consequence of these diverse studies is an extremely scattered literature on planthoppers that has never been synthesized from an ecological perspective. This volume summarizes what is known about planthopper ecology and biological control. It takes a theoretical approach yet is deeply concerned with the application of theory to the practical problems of pest management.
2 117 kr
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"The Evolution of Life Histories" shows that natural selection is the principal underlying force moulding life history variation. The book describes in particular the ways in which variation can be analyzed and predicted. There are many different types of organisms in the world: they differ in size, physiology, appearance, and life history. The challenge for evolutionary biology is to explain how such diversity arises. This book does this by showing that natural selection is the principal underlying force moulding life history variation. The book describes in particular the ways in which variation can be analyzed and predicted. It covers both the genetic and optimization approaches to life history analysis and gives an overview of the general framework of life history theory and the mathematical tools by which predictions can be made and tested. Factors affecting the age schedule of birth and death and the costs of reproduction are discussed. The book concentrates on those theoretical developments that have been tested experimentally.It should interest both students and professionals in evolution, evolutionary ecology, mathematical and theoretical biology and zoology and entomology. This book should be of interest to undergraduate and graduate students and professionals in life science, biology, entomology, ecology, evolution and zoology.
4 227 kr
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There are many different types of organisms in the world: they differ in size, physiology, appearance, and life history. The challenge for evolutionary biology is to explain how such diversity arises. The Evolution of Life Histories does this by showing that natural selection is the principal underlying force molding life history variation. The book describes in particular the ways in which variation can be analyzed and predicted. It covers both the genetic and optimization approaches to life history analysis and gives an overview of the general framework of life history theory and the mathematical tools by which predictions can be made and tested. Factors affecting the age schedule of birth and death and the costs of reproduction are discussed. The Evolution of Life Histories concentrates on those theoretical developments that have been tested experimentally. It will interest both students and professionals in evolution, evolutionary ecology, mathematical and theoretical biology, and zoology and entomology. This book should be of interest to undergraduate and graduate students and professionals in life science, biology, entomology, ecology, evolution and zoology.
4 754 kr
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Nitrogen fixation is a key component of the nitrogen cycle, one of the most fundamental nutrient cycles in the biosphere. Conversion of atmospheric nitrogen into organic nitrogen compounds can be carried out only by certain bacteria and blue-green algae (cyanobacteria). Some nitrogen fixing bacteria live symbiotically with leguminous plants such as peas, beans, clover and certain tropical trees in nodules on the plants' roots, while others live independently in the soil and aquatic habitats. By the activity of these microorganisms, the soil is enriched with the nitrogen required for plant growth and function. Thus the topic is of considerable practical as well as fundamental importance. In "Biological Nitrogen Fixation", leading researchers in nitrogen fixation from all over the world contribute general reviews on all aspects of the subject, from molecular biology and genetics to the biochemistry, physiology and ecology of nitrogen fixation. This compendium of current research should be of use to all who deal indirectly with the subject.It also aims to serve as a textbook for graduate students in microbiology, plant science, biochemistry, molecular biology, plant pathology, agronomy and genetics.
2 117 kr
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Insect Learning is a comprehensive review of a new field. Until recently, insects were viewed as rigidly programmed automatons; now, however, it is recognized that they can learn and that their behavior is plastic. This fundamental change in viewpoint is causing a re-examination of all aspects of the relationship between insects and their environment. This change in perspective is occurring at a time of heightened interest in brain function in both vertebrates and invertebrates. Insects potentially play a major role in this expanding area. Because of their experimental tractability and genetic diversity, they provide unique opportunities for testing hypotheses on the ecology and evolution of learning. As organisms of economic importance, they are perennial objects of research by both basic and applied scientists. Insect Learning covers both social and non-social insects from multiple perspectives. The book covers mechanisms; syntheses of work on physiology, behavior, and ecology; and micro- and macroevolution. The concluding section discusses future directions for research, including applications to pest management.
2 117 kr
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This book should be of interest to students of genetics, botany, agronomy, plant science, crop science, plant breeding, entomology, animal science and human genetics.
2 180 kr
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This book offers constructive ideas to researchers that could lead to the discovery of entirely new classes of drugs. The authors emphasize new topics rather than review work on known antibacterials and antifungals and identify new targets - either the rate-limiting component of the pathway that is susceptible to a screening or rational drug design approach. Each chapter reviews the biochemical pathway and its place in the cellular scheme in order to place the target in perspective. The authors, a mixture of academic researchers and drug-discovery investigators in pharmaceutical companies, also extend these theoretical concerns into practical applications and suggest useful screening methodologies. The importance of this subject area is demonstrated by the increasing number of papers in the literature that point to potential targets and screening methodologies for new antibacterials. This book also deals with antifungals, investigating the inherent limitations in existing antifungals (many of which are extremely toxic or have only limited efficacy) and pointing to major developments in the discovery of novel antifungals.This book should be of interest to graduate students in pharmacology, medicine, microbiology, medicinal chemistry; and to industrial and academic scientists in anti-infective research.
1 062 kr
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1 062 kr
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The field of endocrinology has exploded in the last 20 years because of advances in molecular and cell biology. This text integrates new knowledge about hormone structure and function with the more classical focus on endocrine physiology and metabolic disorders. The editors have assembled contributions by some of the world's leading endocrine researchers and clinical scientists. The result is an illustrated text that integrates findings from studies of structure, biosynthesis, genetics, metabolism and pathophysiology. Molecular structures of hormones and receptor families growth factors, and related oncogenes are presented. Fertility control, in vitro fertilization, and aging are discussed, as is the role of hormones in related pathophysiologies such as cancer, diabetes, and growth disorders. This text begins with an illustrated introductory chapter by Professor Baulieu that surveys virtually all areas of the subject, from the molecular aspects of hormonal communication between cells to comparative evolutionary endocrinology. Subsequent chapters concentrate on specific hormone systems.Following each chapter, molecular biologists, biochemists and endocrinologists contribute essays on special topics of current research interest. It is written at the level of the beginning graduate student in endocrinology, but should also serve as a useful reference for other scientists interested in endocrine systems and hormonal regulation of cellular function. Many clinicians and trainees should find this book a useful source of information on the relationship of molecular and cellular endocrinology to endocrine pathophysiology and therapeutic intervention.
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