Springer us dez 1995 (15 Ergebnisse)

Taschenbuch. Zustand: Neu. Neuware - In a new series in plant conservation sponsored by the World Wide Fund for Nature (WWF), this book is a practical guide to a subject of increasing concern to the conservation biologist.

Taschenbuch. Zustand: Neu. Neuware - Ethnoecology has blossomed in recent years into an important science because of the realization that the vast body of knowledge contained in both indigenous and folk cultures is being rapidly lost as natural ecosystems and cultures are being destroyed by the encroachment of development. Ethnobotany and ethnozoology both began largely with direct observations about the ways in which people used plants and animals and consisted mainly of the compilation of lists. Recently, these subjects have adopted a much more scientific and quantitative methodology and have studied the ways in which people manage their environment and, as a consequence, have used a much more ecological approach. This manual of ethnobotanical methodology will become an essential tool for all ethnobiologists and ethnoecologists. It fills a significant gap in the literature and I only wish it had been available some years previously so that I could have given it to many of my students. I shall certainly recommend it to any future students who are interested in ethnoecology. I particularly like the sympathetic approach to local peoples which pervades this book. It is one which encourages the ethnobotanical work by both the local people themselves and by academically trained researchers. A study of this book will avoid many of the arrogant approaches of the past and encourage a fair deal for any group which is being studied. This manual promotes both the involvement oflocal people and the return to them of knowledge which has been studied by outsiders.…

Buch. Zustand: Neu. Neuware - ''' This book has been written as a guide to the management and use of formulated feeds in intensive fish and shrimp culture. While its focus is on the use of commercially pro duced feeds in intensive production systems, it is anticipated that many of the practical issues covered will be of equal interest to those fish farmers who make their own feeds and to those who use formulated feeds in less intensive systems. Feeds and feeding are the major variable operating costs in intensive aquaculture and the book is primarily in tended to aid decision making by fish farm managers in areas of feeding policy. The dramatic increases in aquaculture production seen over the past 15 years have been made possible, in large part, by gains in our understanding of the food and feed ing requirements of key fish and shrimp species. A global aquaculture feeds industry has developed and a wide range of specialist feeds is now sold. The new options in feeds and feeding systems, which are becoming available, necessitate continual review by farmers of their feeding policies, where choices must be made as to appropriate feed types and feeding methods. While growth rates and feed conversion values are the prime factors of interest to farmers, other important issues, such as product quality and environmental impacts of farm effiuents, are also directly related to feed management practices.…

Buch. Zustand: Neu. Neuware - Computers are currently used in a variety of critical applications, including systems for nuclear reactor control, flight control (both aircraft and spacecraft), and air traffic control. Moreover, experience has shown that the dependability of such systems is particularly sensitive to that of its software components, both the system software of the embedded computers and the application software they support. Software Performability: From Concepts to Applications addresses the construction and solution of analytic performability models for critical-application software. The book includes a review of general performability concepts along with notions which are peculiar to software performability. Since fault tolerance is widely recognized as a viable means for improving the dependability of computer system (beyond what can be achieved by fault prevention), the examples considered are fault-tolerant software systems that incorporate particular methods of design diversity and fault recovery. Software Performability: From Concepts to Applications will be of direct benefit to both practitioners and researchers in the area of performance and dependability evaluation, fault-tolerant computing, and dependable systems for critical applications. For practitioners, it supplies a basis for defining combined performance-dependability criteria (in the form of objective functions) that can be used to enhance the performability (performance/dependability) of existing software designs. For those with research interests in model-based evaluation, the book provides an analytic framework and a variety of performability modeling examples in an application context of recognized importance. The material contained in this book will both stimulate future research on related topics and, for teaching purposes, serve as a reference text in courses on computer system evaluation, fault-tolerant computing, and dependable high-performancecomputer systems.…

Buch. Zustand: Neu. Neuware - o Computer Automation in Manufacturing provide instruction in computer architecture, interfacing to mechanical systems, and software development for continuous control and discrete event systems. This is accomplished by presenting theoretical material and hands-on laboratory experiments.…

Buch. Zustand: Neu. Neuware - The focus of this symposium was on the present and future capabilities of flow cytometry for both medical and biological applications in cancer. This technology began with quite modest instrumentation, with limited capabilities to answer biological questions. Today, both the clinical workhorses and the powerful multi-laser, multi-detector, sorting machinery, coupled with sophisticated computers and storage devices and the increasing storehouse of markers and dyes, are taking us to the limit and beyond in finding answers to the cause and cure of cancer. In the past, both normal hematopoietic tissue and leukemias have been the tissue samples of choice in the application of flow cytometry, and some of the most recent applications with these tissues are presented here. However, the book also discusses the increasingly sophisticated disaggregation techniques which allow investigators the possibility to train their lasers on solid tumors. Not only can we use flow cytometry with associated fluorescent markers to understand the biology of cancer, but also the wide array of existing and developing markers provides us with important diagnostic tools in the detection of cancer early in either the malignant or relapse process. And the field comes full circle, with the use of the technology for gene mapping and other genetic studies to unlock the basic malignant process. …

Buch. Zustand: Neu. Neuware - Throughout the management literat ure , as elegantly trumpeted by management consultants and gurus, there seems to be a common message: tor a firm to be competitive it must produce quality goods or services. This means that firms, to remain competitive, must at the same time produce at the least cost possible to be price competitive and deli ver high quality products and services. As a result, quality has become strategie overnight, involving all, both in and out of the firm, in the management of its interfaces with clients and the environment. To give quality, suppliers, buyers, operations and marketing managers, as weIl as corporate management must become aware of the mutual relationships and inter-dependencies to which they are subjected, so that they will be able to function as a coherent whole. This involves human relations and people problems, organizational design issues, engineering design options, monitoring and control approaches and, most of all , a managerial philosophy that can integrate, monitor and eontrol the multiple elements which render the firm a viable quality producing and profitable whole. To realize the benefits of quality it is imperative that we design products to be compatible with market needs, market structure, eompetition and, of course, that we are constantly aware and abreast of consumers' tastes and the manufacturing technologies that are continuously emerging.…

Buch. Zustand: Neu. Neuware - Living Marine Resources provides a thorough, up-to-date introduction to all aspects of fisheries science. This clearly written text offers insight into a topic of increasing importance--the wise utilization and management of sea fisheries to maximize production without exceeding their carrying capacity. Adoption of the approaches presented will improve the conservation and management of the many world fisheries that are suffering from years of inefficient practices. The book is divided into five sections, beginning with an introduction to the ocean environment and the various resource species. Part two examines fisheries biology, including age, growth, fecundity, and mortality, enabling readers to appreciate yield models designed to give estimates of maximum sustainable yield and maximum economic yield. The third part covers gear, methods, and landings and includes material on the handling and processing of seafood as well as aquaculture. In part four, yield models are presented to introduce students to theories on population dynamics, stock assessment, and management. The book concludes with coverage of recreational fisheries, including socioeconomic importance, catch and effort research, management techniques, and their interface with commercial fisheries. Living Marine Resources is an invaluable introduction to the subject for advanced undergraduate and graduate students of fisheries science. In addition, the material presented will be valuable to fishery and social scientists, fishery officers and administrators, and students in biology, engineering, economics, and law.…

Buch. Zustand: Neu. Neuware - Consumer Attitudes Toward Credit Insurance provides the findings of a survey of approximately 3600 individuals who had the opportunity to purchase credit life insurance in conjunction with all types of consumer loans, except first mortgages and credit cards. The survey that forms the basis of the book was conducted in 1993 by the Credit Research Center at Purdue University's Krannert Graduate School of Management. It replicates and expands upon four previous national studies of credit insurance consumers, done between 1970 and 1985. Despite the generally positive findings of prior research with respect to consumer attitudes toward credit insurance, several open questions remain of interest to policy makers, specifically the question of whether coercion is involved in the sale of the insurance. Consumer Attitudes Toward Credit Insurance addresses these outstanding issues. It presents a profile of who is currently being served by the credit insurance market, as well as the reasons borrowers purchase the product and their experience with the offer of credit insurance at point of sale.…

Buch. Zustand: Neu. Neuware - Contamination of food with extremely low levels of certain compounds can cause an unpleasant taste. This can result in the destruction of vast stocks of product, and very substantial financial losses to food companies. The concentration of the alien compound in the food can be so low that very sophisticated equipment is needed to identify the components and to determine its source. It is vital that every company involved in the production, distribution and sale of foodstuffs are fully aware of the ways in which contamination can accrue, how it can be avoided, and what steps need to be taken in the event that a problem does arise. This book provides the background information needed to recognize how food can become tainted, to draw up guidelines to prevent this contamination, and to plan the steps that should be taken in the event of an outbreak. The new edition has been extensively revised and updated and includes substantial new material on the formation of off flavors due to microbiological and enzymic action, and on sensory evaluation of taints and off flavors A new chapter on off flavors in alcoholic beverages has been added. Written primarily for industrial food technologists, this volume is also an essential reference source for workers in research and government institutions.…

Buch. Zustand: Neu. Neuware - Concepts, Mechanisms, and New Targets for Chemotherapy describes new interconnections between rationally designed and empirically discovered compounds. One route that has not been travelled previously is that of protein kinase C inhibition. This pathway may be exploited to give potent inhibitors, such as the bryostatins, now in clinical trial. A summary is given of the current status of topoisomerase, focusing on recent clinical advances with camptothecin analogs based on connecting empiricism with concepts of drug selectivity. Modification of existing therapies based on the pursuit of leads arising from mechanistic studies is also being applied clinically on a wide scale. Greater understanding should follow from the studies of reversal of the multidrug resistant phenotype, on the use of hydroxyurea to reverse resistance mediated by extrachromosomal DNA, and on various aspects of the fluoropyrimidine pathways. Successful applications of chemotherapy to the treatment of specific diseases include the growing applications of systemic therapy using various skin malignancies. In prostate cancer, estramustine phosphate will likely play an expanding role. Taxanes are restructuring treatment regimens in breast cancer, and high-dose strategies are described with peripheral blood progenitor autografting in the treatment of ovarian and breast cancers.…

Buch. Zustand: Neu. Neuware - Mechanisms of Heart Failure is based on papers selected from poster presentations made at the International Conference on Heart Failure, Winnipeg, May 20-23, 1994. Although the entire book is one continuous discussion of subcellular mechanisms of heart failure and its treatment, the presentation has been divided into three sections: the opening section on the subcellular basis of heart failure includes discussions of cytokines, signal transduction, metabolism, extracellular matrix, organ level changes and newer approaches to understanding the pathogenesis of heart failure. The second section focuses on the pathophysiological aspects of cardiomyopathies and their treatment. In the final section, medical, surgical and pharmacological approaches to the treatment of heart failure are discussed in clinical and animal laboratory settings.…

Buch. Zustand: Neu. Neuware - Contributors ix Chapter Introduction: The Challenge of Flowering Plant History David Winship Taylor and Leo J. Hickey Chapter 2. A Survey of Reticulate Venation Among Fossil and Living Land Plants Mary Louise Trivett and Kathleen B. Pigg Chapter 3. A New Gnetophyte from the Late Carnian (Late Triassic) of Texas and its Bearing on the Origin of the Angiosperm Carpel and Stamen 32 Bruce Cornet Chapter 4. Wood Anatomy of Primitive Angiosperms: New Perspectives and Syntheses 68 Sherwin Carlquist Chapter 5. Evidence for the Earliest Stage of ~giosperm Pollen Evolution: A Paleoequatodal Section from Israel 91 Gilbert J. Brenner Chapter 6. The Origin and Evolution of the Angiosperm Carpel 116 David Winship Taylor and Gretchen Kirchner Chapter Floral Structure, Development, and Relationships of Paleoherbs: Saruma, Cabomba, Lactoris, and Selected Piperales 141 Shirley Tucker and Andrew Douglas Chapter 8. Origin of the Angiosperm Flower 176 Leo J. Hickey and David Winship Taylor Chapter Evidencefor and Implications of an Herbaceous Origin for Angiosperms 232 David Winship Taylor and Leo Z Hickey Chapter Comparison of Alternative Hypotheses for the Origin of the Angiosperms 267 Henry Loconte 10. 9. W. C. 7. 1. CONTENTS vi Contents Chapter The Least Specialized Angiosperms 286 Robert F. Thorne Chapter Molecular Phylogenies and the Diversification of the Angiosperms 314 Kenneth J. Sytsma and David A. Baum 341 References Appendix. Stratigraphic Time Scale 387 Index 12. 11.…

Buch. Zustand: Neu. Neuware - Vegetables contain several classes of pigments: the green chlorophylls; the yellow, orange, and red carotenoids; the red, blue, or violet anthocyanins; andthered-violet betalains. Thisbookcoversthechlorophyllsandthecarot enoids, the two chief classes of vegetable pigments, and is the first major compilationofthis kind. Structure, physical and chemical properties, and analytical methods, in cluding special methods adapted for certain vegetables, are discussed first, and are then followed by a discussion of physiological and biochemical as pects, including location, biosynthesis, and biochemical changes during plant developmentand senescence. Both pigment classes have extremelyimportant biological functions. The chlorophylls are of paramount importance in photosynthesis. The carot enoids, besides their photofunction, have a highly significant role in nutri tion. Someofthem havevitaminA value and, possibly, a rolein the preven tion of human cancer. The chlorophyll distribution table includes all ofthe currentlyavailable quantitativedataonvegetables. The discussion of carotenoid distribution describes the unique carot enoids found invegetablesandincludesqualitativeandquantitativedistribu tion tables for the most common vegetables. These tables summarize all of the publisheddata to date, but they are far from complete. However, appli cationofrecentlyavailabletechniques should fill theenormousgaps, update old data, and permit an accurate assessment of the vitamin A value of the food. Suchcompletedatawould also make it possible to usecarotenoid dis tributioninthetaxonomyofvegetables. The presentations of pigment distribution also consider the changes in pigmentcontentduring storageand processing. Thebookalsoincludesapresentationoffactors affectingpigmentsynthe sis in vegetables (e.g., phytohormones) and environmental factors (e.g., light, temperature), as well as fertilizers and pesticides.…

Buch. Zustand: Neu. Neuware - The attractive physical and mechanical properties of ordered intermetallic alloys have been recognized since early in this century. However, periodic attempts to develop intermetallics for structural applications were unsuc cessful, due in major part to the twin handicaps of inadequate low-temper ature ductility or toughness, together with poor elevated-temperature creep strength. The discovery, in 1979, by Aoki and Izumi in Japan that small additions of boron caused a dramatic improvement in the ductility of Ni3Al was a major factor in launching a new wave of fundamental and applied research on intermetallics. Another important factor was the issuance in 1984 of a National Materials Advisory Board reported entitled 'Structural Uses for Ductile Ordered Alloys,' which identified numerous potential defense-related applications and proposed the launching of a coordinated development program to gather engineering property and processing data. A substantial research effort on titanium aluminides was already underway at the Air Force Materials Laboratory at Wright Patterson Air Force Base in Ohio and, with Air Force support, at several industrial and university laboratories. Smaller programs also were under way at Oak Ridge National Laboratory, under Department of Energy sponsorship. These research efforts were soon augmented in the United States by funding from Department of Defense agencies such as Office of Naval Research and Air Force Office of Scientific Research, and by the National Science Foundation.…