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168 produkter
168 produkter
3 519 kr
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2 375 kr
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Effects on Human Health of Subtherapeutic Use of Antimicrobials in Animal Feeds
Häftad, Engelska, 1980
2 268 kr
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2 040 kr
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2 548 kr
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2 029 kr
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2 494 kr
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Based on a thorough review of the scientific evidence, this book provides the most authoritative assessment yet of the relationship between dietary and nutritional factors and the incidence of cancer. It provides interim dietary guidelines that are likely to reduce the risk of cancer as well as ensure good nutrition.
1 816 kr
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The regulation of potentially hazardous substances has become a controversial issue. This volume evaluates past efforts to develop and use risk assessment guidelines, reviews the experience of regulatory agencies with different administrative arrangements for risk assessment, and evaluates various proposals to modify procedures. The book's conclusions and recommendations can be applied across the entire field of environmental health.
1 763 kr
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1 936 kr
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Prepared at the request of the National Toxicology Program, this landmark report reveals that many chemicals used in pesticides, cosmetics, drugs, food, and commerce have not been sufficiently tested to allow a complete determination of their potential hazards. Given the vast number of chemical substances to which humans are exposed, the authors use a model to show how research priorities for toxicity testing can be set.
1 668 kr
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As the general public has become more aware of advances in nutrition, consumer demands for advice on matters of diet and disease have grown. This book offers recommendations to upgrade what were found to be largely inadequate nutrition programs in U.S. medical schools in order that health professionals be better qualified to advise and treat their patients. A comprehensive study of one-third of American 4-year undergraduate medical schools provided information on the current status of nutrition programs at each school. Conclusions were drawn and recommendations made from analysis of this gathered information. Questions examined in this volume include: Has medical education kept pace with advances in nutrition science? Are medical students equipped to convey sound nutritional advice to their patients? What strategies are needed to initiate and sustain adequate teaching of nutrition in medical schools?
Ecological Knowledge and Environmental Problem-Solving
Concepts and Case Studies
Häftad, Engelska, 1986
2 363 kr
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This volume explores how the scientific tools of ecology can be used more effectively in dealing with a variety of complex environmental problems. Part I discusses the usefulness of such ecological knowledge as population dynamics and interactions, community ecology, life histories, and the impact of various materials and energy sources on the environment. Part II contains 13 original and instructive case studies pertaining to the biological side of environmental problems, which Nature described as "carefully chosen and extremely interesting."
2 075 kr
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The most recent volume in the Drinking Water and Health series contains the results of a two-part study on the toxicity of drinking water contaminants. The first part examines current practices in risk assessment, identifies new noncancerous toxic responses to chemicals found in drinking water, and discusses the use of pharmacokinetic data to estimate the delivered dose and response. The second part of the book provides risk assessments for 14 specific compounds, 9 presented here for the first time.
1 809 kr
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Chlorination in various forms has been the predominant method of drinking water disinfection in the United States for more than 70 years. The seventh volume of the Drinking Water and Health series addresses current methods of drinking water disinfection and compares standard chlorination techniques with alternative methods. Currently used techniques are discussed in terms of their chemical activity, and their efficacy against waterborne pathogens, including bacteria, cysts, and viruses, is compared. Charts, tables, graphs, and case studies are used to analyze the effectiveness of chlorination, chloramination, and ozonation as disinfectant processes and to compare these methods for their production of toxic by-products. Epidemiological case studies on the toxicological effects of chemical by-products in drinking water are also presented.
2 172 kr
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Pharmacokinetics, the study of the movement of chemicals within the body, is a vital tool in assessing the risk of exposure to environmental chemicals. This book--a collection of papers authored by experts in academia, industry, and government--reviews the progress of the risk-assessment process and discusses the role of pharmacokinetic principles in evaluating risk. In addition, the authors discuss software packages used to analyze data and to build models simulating biological phenomena. A summary chapter provides a view of trends in pharmacokinetic modeling and notes some prospective fields of study.
1 863 kr
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In the laboratory, testing the toxic effects for a single compound is a straightforward process. However, many common harmful substances occur naturally as mixtures and can interact to exhibit greater toxic effects as a mixture than the individual components exhibit separately. Complex Mixtures addresses the problem of identifying and classifying complex mixtures, investigating the effect of exposure, and the research problems inherent in testing their toxicity to human beings. A complete series of case studies is presented, including one that examines the cofactors of alcohol consumption and cigarette smoke.
2 687 kr
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This book describes hazards from radon progeny and other alpha-emitters that humans may inhale or ingest from their environment. In their analysis, the authors summarize in one document clinical and epidemiological evidence, the results of animal studies, research on alpha-particle damage at the cellular level, metabolic pathways for internal alpha-emitters, dosimetry and microdosimetry of radionuclides deposited in specific tissues, and the chemical toxicity of some low-specific-activity alpha-emitters. Techniques for estimating the risks to humans posed by radon and other internally deposited alpha-emitters are offered, along with a discussion of formulas, models, methods, and the level of uncertainty inherent in the risk estimates.
1 717 kr
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Scientific experiments using animals have contributed significantly to the improvement of human health. Animal experiments were crucial to the conquest of polio, for example, and they will undoubtedly be one of the keystones in AIDS research. However, some persons believe that the cost to the animals is often high. Authored by a committee of experts from various fields, this book discusses the benefits that have resulted from animal research, the scope of animal research today, the concerns of advocates of animal welfare, and the prospects for finding alternatives to animal use. The authors conclude with specific recommendations for more consistent government action.
1 855 kr
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The National Research Council closes the landmark series Drinking Water and Health with Volume 9, published in two parts: Part I: DNA Adducts provides an overview of DNA adducts and their effects on human health, explores the techniques currently in use for detecting them, offers an outlook on future toxicity testing, and lists specific recommendations for action. Part II: Mixtures explores the issues surrounding multiple-chemical exposure from drinking water and reviews options for grouping compounds so their toxicity in mixtures can be reliably assessed. The book describes alternative approaches and considers the option of developing a modified "hazard index" for chemical compounds.
1 717 kr
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This book brings the concerned individual up-to-date on the breakthroughs and social questions emerging from biology today. Author Steve Olson draws on the latest research in a number of fields as well as the views of leading biologists, ethicists, and philosophers. He tells the story of the intricate, often frustrating, path scientists must follow to find out why we are the way we are. The volume highlights groundbreaking research being done in four of biology's most exciting fields: genetics, development, neurobiology, and evolution. In each field, the implications of this research extend far beyond basic biology, ranging from human gene therapy to cancer, from neural transplantation to the evolution of the atmosphere.
2 508 kr
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This book reevaluates the health risks of ionizing radiation in light of data that have become available since the 1980 report on this subject was published. The data include new, much more reliable dose estimates for the A-bomb survivors, the results of an additional 14 years of follow-up of the survivors for cancer mortality, recent results of follow-up studies of persons irradiated for medical purposes, and results of relevant experiments with laboratory animals and cultured cells. It analyzes the data in terms of risk estimates for specific organs in relation to dose and time after exposure, and compares radiation effects between Japanese and Western populations.
2 202 kr
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Biology is where many of science's most exciting and relevant advances are taking place. Yet, many students leave school without having learned basic biology principles, and few are excited enough to continue in the sciences. Why is biology education failing? How can reform be accomplished? This book presents information and expert views from curriculum developers, teachers, and others, offering suggestions about major issues in biology education: what should we teach in biology and how should it be taught? How can we measure results? How should teachers be educated and certified? What obstacles are blocking reform?
1 946 kr
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Since its introduction in 1943 Recommended Dietary Allowances has become the accepted source of nutrient allowances for healthy people. These Recommended Dietary Allowances (RDAs) are used throughout the food and health fields. Additionally, RDAs serve as the basis for the U.S. Recommended Daily Allowances, the Food and Drug Administration's standards for nutrition labeling of foods. The 10th Edition includes research results and expert interpretations from years of progress in nutrition research since the previous edition and provides not only RDAs but also "Estimated Safe and Adequate Daily Dietary Intakes"--provisional values for nutrients where data were insufficient to set an RDA. Organized by nutrient for ready reference, the volume reviews the function of each nutrient in the human body, sources of supply, effects of deficiencies and excessive intakes, relevant study results, and more. The volume concludes with the invaluable "Summary Table of Recommended Dietary Allowances," a convenient and practical summary of the recommendations.
1 278 kr
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Studying animals in the environment may be a realistic and highly beneficial approach to identifying unknown chemical contaminants before they cause human harm. Animals as Sentinels of Environmental Health Hazards presents an overview of animal-monitoring programs, including detailed case studies of how animal health problems--such as the effects of DDT on wild bird populations--have led researchers to the sources of human health hazards. The authors examine the components and characteristics required for an effective animal-monitoring program, and they evaluate numerous existing programs, including in situ research, where an animal is placed in a natural setting for monitoring purposes.
1 809 kr
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Potential benefits from the use of genetically modified organisms--such as bacteria that biodegrade environmental pollutants--are enormous. To minimize the risks of releasing such organisms into the environment, regulators are working to develop rational safeguards. This volume provides a comprehensive examination of the issues surrounding testing these organisms in the laboratory or the field and a practical framework for making decisions about organism release. Beginning with a discussion of classical versus molecular techniques for genetic alteration, the volume is divided into major sections for plants and microorganisms and covers the characteristics of altered organisms, past experience with releases, and such specific issues as whether plant introductions could promote weediness. The executive summary presents major conclusions and outlines the recommended decision-making framework.
Tracking Toxic Substances at Industrial Facilities
Engineering Mass Balance Versus Materials Accounting
Häftad, Engelska, 1990
1 763 kr
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In response to a congressional mandate, this book examines whether knowing the amounts of toxic substances entering and leaving manufacturing facilities is useful in evaluating chemical releases to the environment, waste reduction progress, and chemical management practices. Tracking of these substances with rigorous engineering data is compared with a less resource-intensive alternative to determine the feasibility and potential usefulness to the public and the government.
2 029 kr
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This book explores in detail threats to the world's sea turtle population to provide sound, scientific conclusions on which dangers are greatest and how they can be addressed most effectively. Offering a fascinating and informative overview of five sea turtle species, the volume discusses sea turtles' feeding habits, preferred nesting areas, and migration routes; examines their status in U.S. waters; and cites examples of conservation measures under way and under consideration.
1 671 kr
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Committee on Forestry Research, National Research Council Forests are valuable in our daily lives, crucial to our nation's ecomony, and integral to the long-term health of the environment. Yet, forestry research has been critically underfunded, and the data generated under current research programs is not enough to meet the diverse needs of our society. Forestry Research provides a research agenda that should yield the information we need to develop responsible policies for forest use and management. In this consensus of forestry experts, the volume explores: * The diverse and competing concerns of the timber industry, recreational interests, and wildlife and environmental organizations. * The gap between our need for information and the current output of the forestry research program. * Areas of research requiring attention: biology of forest organisms, ecosystem function and management, human-forest interactions, wood as raw material, and international trade and competition. Forestry Research is an important book of special interest to federal and state policymakers involved in forestry issues, research managers, researchers, faculty, and students in the field.
1 316 kr
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Committee on Infectious Diseases of Mice and Rats, National Research Council This companion to Infectious Diseases of Mice and Rats makes practical information on rodent diseases readily accessible to researchers. This volume parallels the three parts of the main volume. Part I, Principles of Rodent Disease Prevention, briefly examines the requirements for maintaining pathogen-free rodents, factors in designing health surveillance programs, and other laboratory management issues. Part II, Disease Agents, is an easy-to-use reference section, listing diagnosis and control methods, the potential for interference with research, and other factors for disease agents ranging from adenoviruses to tapeworms. It covers bacteria, viruses, fungi and common ectoparasites, and endoparasites. Part III, Diagnostic Indexes, presents alphabetical listings of clinical signs, pathology, and research complications and lists infectious agents that might be responsible for each.
Education and Training in the Care and Use of Laboratory Animals
A Guide for Developing Institutional Programs
Häftad, Engelska, 1991
1 316 kr
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Federal law now requires that institutions provide training for anyone caring for or using laboratory animals. This volume provides the guidelines and resources needed to coordinate a quality training program, as well as to meet all legal requirements. A core module for all personnel takes no more than four hours to present. Most staff then proceed to one or more additional skills-development modules including the species-specific module that can be customized to any species in use at the institution, the pain management module, and the surgery module. The volume provides content information for required topics--from ethics to record keeping--and lists sources of additional publications, audiovisual programs, and computerized teaching aids. Included are: * Ready-to-use teaching outlines, with detailed instructions for presenting material. * Practical guidelines on logistics, covering scheduling, budgeting, and more. * Guidelines on how to design training for adults and how to work with investigators who may resist taking training courses. This practical guidebook will be necessary for research institutions, particularly for staff members responsible for training coordination.