Bokus

Board on Agriculture and Natural Resources – författare

Visar alla böcker från författaren Board on Agriculture and Natural Resources. Handla med fri frakt och snabb leverans.

191 produkter

  1. National Research Council, Division on Earth and Life Studies, Board on Agriculture and Natural Resources, Committee on National Capacity in Forestry Research - National Capacity in Forestry Research, Häftad. Tillgänglighet: Lägg i varukorg

    National Capacity in Forestry Research

    Av National Research Council, Division on Earth and Life Studies m. fl.

    Häftad, 2002

    728 kr

    Lägg i varukorg

    Forests are major components of the earth's natural resources and they are increasingly critical to the welfare of the U.S. economy, environment, and population. Desires to improve forest management and productivity, preserve biodiversity, maintain ecologic integrity, and provide societal services, …

  2. National Research Council, Division on Earth and Life Studies, Board on Agriculture and Natural Resources, Committee on Animal Nutrition, Subcommittee on Dog and Cat Nutrition - Nutrient Requirements of Dogs and Cats, Inbunden. Tillgänglighet: Lägg i varukorg

    Nutrient Requirements of Dogs and Cats

    Av National Research Council, Division on Earth and Life Studies m. fl.

    Inbunden, 2006

    1442 kr

    Lägg i varukorg

    Updating recommendations last made by the National Research Council in the mid-1980s, this report provides nutrient recommendations based on physical activity and stage in life, major factors that influence nutrient needs. It looks at how nutrients are metabolized in the bodies of dogs and cats, …

  3. National Research Council, Division on Earth and Life Studies, Board on Environmental Studies and Toxicology, Board on Agriculture and Natural Resources, Committee on Animal Nutrition, Ad Hoc Committee on Air Emissions from Animal Feeding Operations - Air Emissions from Animal Feeding Operations, Häftad. Tillgänglighet: Lägg i varukorg

    Air Emissions from Animal Feeding Operations

    Current Knowledge, Future Needs

    Av National Research Council, Division on Earth and Life Studies m. fl.

    Häftad, 2003

    836 kr

    Lägg i varukorg

    Air Emissions from Animal Feeding Operations: Current Knowledge, Future Needs discusses the need for the U.S. Environmental Protection Agency to implement a new method for estimating the amount of ammonia, nitrous oxide, methane, and other pollutants emitted from livestock and poultry farms, and …

  4. National Research Council, Division on Earth and Life Studies, Board on Agriculture and Natural Resources, Committee on Nutrient Requirements of Horses - Nutrient Requirements of Horses, Inbunden. Tillgänglighet: Lägg i varukorg

    Nutrient Requirements of Horses

    Sixth Revised Edition

    Av National Research Council, Division on Earth and Life Studies m. fl.

    Inbunden, 2007

    5,0 utav 5 stjärnor. Totalt antal röster: (2)

    1411 kr

    Lägg i varukorg

    Proper formulation of diets for horses depends on adequate knowledge of their nutrient requirements. These requirements depend on the breed and age of the horse and whether it is exercising, pregnant, or lactating. A great deal of new information has been accumulated since the publication 17 years …

  5. National Research Council, Division on Earth and Life Studies, Board on Agriculture and Natural Resources, Committee on Nutrient Requirements of Small Ruminants - Nutrient Requirements of Small Ruminants, Inbunden. Tillgänglighet: Lägg i varukorg

    Nutrient Requirements of Small Ruminants

    Sheep, Goats, Cervids, and New World Camelids

    Av National Research Council, Division on Earth and Life Studies m. fl.

    Inbunden, 2006

    1442 kr

    Lägg i varukorg

    Updating two previous National Research Council publications, Nutrient Requirements of Sheep, Sixth Revised Edition, 1985, and Nutrient Requirements of Goats, First Edition, 1981, this new book provides an evaluation of the scientific literature on the nutrient requirements of small ruminants in …

  6. Committee on the National Plant Genome Initiative: Achievements and Future Directions, Board on Life Sciences, Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council - Achievements of the National Plant Genome Initiative and New Horizons in Plant Biology, E-bok. Tillgänglighet: Lägg i varukorg

    Achievements of the National Plant Genome Initiative and New Horizons in Plant Biology

    Av Committee on the National Plant Genome Initiative: Achievements and Future Directions, Board on Life Sciences m. fl.

    E-bok, 2008

    505 kr

    Lägg i varukorg

    Life on Earth would be impossible without plants. Humans rely on plants for most clothing, furniture, food, as well as for many pharmaceuticals and other products. Plant genome sciences are essential to understanding how plants function and how to develop desirable plant characteristics. For …

  7. and Fishing Research Program Committee to Review the NIOSH Agriculture, Forestry, Board on Agriculture and Natural Resources, National Research Council, Institute of Medicine - Agriculture, Forestry, and Fishing Research at NIOSH, E-bok. Tillgänglighet: Lägg i varukorg

    Agriculture, Forestry, and Fishing Research at NIOSH

    Reviews of Research Programs of the National Institute for Occupational Safety and Health

    Av and Fishing Research Program Committee to Review the NIOSH Agriculture, Forestry, Board on Agriculture and Natural Resources m. fl.

    E-bok, 2008

    972 kr

    Lägg i varukorg

    The agriculture, forestry, and fishing sectors are the cornerstone of industries that produce food, fiber, and biofuel. The National Institute for Occupational Safety and Health (NIOSH) conducts research in order to improve worker safety and health in these sectors. This National Research Council …

  8. Steering Committee on Global Challenges and Directions for Agricultural Biotechnology: Mapping the Course, Board on Agriculture and Natural Resources, Board on Life Sciences, Division on Earth and Life Studies, National Research Council - Global Challenges and Directions for Agricultural Biotechnology, E-bok. Tillgänglighet: Lägg i varukorg

    Global Challenges and Directions for Agricultural Biotechnology

    Workshop Report

    Av Steering Committee on Global Challenges and Directions for Agricultural Biotechnology: Mapping the Course, Board on Agriculture and Natural Resources m. fl.

    E-bok, 2008

    286 kr

    Lägg i varukorg

    Many developing countries are exploring whether biotechnology has a role in addressing national issues such as food security and environmental remediation, and are considering whether the putative benefits of the technology-for example, enabling greater agricultural productivity and stability in …

  9. Planning Committee for the Workshop on Research to Improve the Evaluation of the Impacts of Genetically Engineered Organisms on Terrestrial and Aquatic Wildlife and Habitats, Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council, Paula Tarnapol Whitacre - Genetically Engineered Organisms, Wildlife, and Habitat, E-bok. Tillgänglighet: Lägg i varukorg

    Genetically Engineered Organisms, Wildlife, and Habitat

    A Workshop Summary

    Av Planning Committee for the Workshop on Research to Improve the Evaluation of the Impacts of Genetically Engineered Organisms on Terrestrial and Aquatic Wildlife and Habitats, Board on Agriculture and Natural Resources m. fl.

    E-bok, 2008

    373 kr

    Lägg i varukorg

    Since the first commercial introduction of transgenic corn plants in 1995, biotechnology has provided enormous benefits to agricultural crop production. Research is underway to develop a much broader range of genetically engineered organisms (GEOs), including fish, trees, microbes, and insects, …

  10. Committee on the Economic Development and Current Status of the Sheep Industry in the United States, Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council - Changes in the Sheep Industry in the United States, E-bok. Tillgänglighet: Lägg i varukorg

    Changes in the Sheep Industry in the United States

    Making the Transition from Tradition

    Av Committee on the Economic Development and Current Status of the Sheep Industry in the United States, Board on Agriculture and Natural Resources m. fl.

    E-bok, 2008

    996 kr

    Lägg i varukorg

    The U.S. sheep industry is complex, multifaceted, and rooted in history and tradition. The dominant feature of sheep production in the United States, and, thus, the focus of much producer and policy concern, has been the steady decline in sheep and lamb inventories since the mid-1940s. Although …

  11. Committee on a Study of Technologies to Benefit Farmers in Africa and South Asia, Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council - Emerging Technologies to Benefit Farmers in Sub-Saharan Africa and South Asia, E-bok. Tillgänglighet: Lägg i varukorg

    Emerging Technologies to Benefit Farmers in Sub-Saharan Africa and South Asia

    Av Committee on a Study of Technologies to Benefit Farmers in Africa and South Asia, Board on Agriculture and Natural Resources m. fl.

    E-bok, 2009

    806 kr

    Lägg i varukorg

    Increased agricultural productivity is a major stepping stone on the path out of poverty in sub-Saharan Africa and South Asia, but farmers there face tremendous challenges improving production. Poor soil, inefficient water use, and a lack of access to plant breeding resources, nutritious animal …

  12. Committee on Achieving Sustainable Global Capacity for Surveillance and Response to Emerging Diseases of Zoonotic Origin, Board on Global Health, Institute of Medicine, Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council, Alexandra Beatty, Kimberly Scott, Peggy Tsai - Achieving Sustainable Global Capacity for Surveillance and Response to Emerging Diseases of Zoonotic Origin, E-bok. Tillgänglighet: Lägg i varukorg

    Achieving Sustainable Global Capacity for Surveillance and Response to Emerging Diseases of Zoonotic Origin

    Workshop Summary

    Av Committee on Achieving Sustainable Global Capacity for Surveillance and Response to Emerging Diseases of Zoonotic Origin, Board on Global Health m. fl.

    E-bok, 2008

    500 kr

    Lägg i varukorg

    One of the biggest threats today is the uncertainty surrounding the emergence of a novel pathogen or the re-emergence of a known infectious disease that might result in disease outbreaks with great losses of human life and immense global economic consequences. Over the past six decades, most of the …

  13. Committee on a Leadership Summit to Effect Change in Teaching and Learning, Board on Agriculture and Natural Resources, Board on Life Sciences, Division on Earth and Life Studies, National Research Council - Transforming Agricultural Education for a Changing World, E-bok. Tillgänglighet: Lägg i varukorg

    Transforming Agricultural Education for a Changing World

    Av Committee on a Leadership Summit to Effect Change in Teaching and Learning, Board on Agriculture and Natural Resources m. fl.

    E-bok, 2009

    598 kr

    Lägg i varukorg

    During the next ten years, colleges of agriculture will be challenged to transform their role in higher education and their relationship to the evolving global food and agricultural enterprise. If successful, agriculture colleges will emerge as an important venue for scholars and stakeholders to …

  14. Committee on the National Plant Genome Initiative: Achievements and Future Directions, Board on Life Sciences, Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council - Achievements of the National Plant Genome Initiative and New Horizons in Plant Biology, E-bok. Tillgänglighet: Lägg i varukorg

    Achievements of the National Plant Genome Initiative and New Horizons in Plant Biology

    Av Committee on the National Plant Genome Initiative: Achievements and Future Directions, Board on Life Sciences m. fl.

    E-bok, 2008

    729 kr

    Lägg i varukorg

    Life on Earth would be impossible without plants. Humans rely on plants for most clothing, furniture, food, as well as for many pharmaceuticals and other products. Plant genome sciences are essential to understanding how plants function and how to develop desirable plant characteristics. For …

  15. Committee on the Economic Development and Current Status of the Sheep Industry in the United States, Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council - Changes in the Sheep Industry in the United States, E-bok. Tillgänglighet: Lägg i varukorg

    Changes in the Sheep Industry in the United States

    Making the Transition from Tradition

    Av Committee on the Economic Development and Current Status of the Sheep Industry in the United States, Board on Agriculture and Natural Resources m. fl.

    E-bok, 2008

    1101 kr

    Lägg i varukorg

    The U.S. sheep industry is complex, multifaceted, and rooted in history and tradition. The dominant feature of sheep production in the United States, and, thus, the focus of much producer and policy concern, has been the steady decline in sheep and lamb inventories since the mid-1940s. Although …

  16. National Research Council, Institute of Medicine, Board on Population Health and Public Health Practice, Board on Agriculture and Natural Resources, Food and Nutrition Board, Janet Mulligan, Peggy Tsai, Paula Tarnapol Whitacre - Public Health Effects of Food Deserts, Häftad. Tillgänglighet: Lägg i varukorg

    Public Health Effects of Food Deserts

    Workshop Summary

    Av National Research Council, Institute of Medicine m. fl.

    Häftad, 2009

    637 kr

    Lägg i varukorg

    In the United States, people living in low-income neighborhoods frequently do not have access to affordable healthy food venues, such as supermarkets. Instead, those living in "food deserts" must rely on convenience stores and small neighborhood stores that offer few, if any, healthy food choices, …

  17. Food and Nutrition Board, Board on Agriculture and Natural Resources, Board on Population Health and Public Health Practice, Institute of Medicine, National Research Council, Paula Tarnapol Whitacre, Peggy Tsai, Janet Mulligan - Public Health Effects of Food Deserts, E-bok. Tillgänglighet: Lägg i varukorg

    Public Health Effects of Food Deserts

    Workshop Summary

    Av Food and Nutrition Board, Board on Agriculture and Natural Resources m. fl.

    E-bok, 2009

    411 kr

    Lägg i varukorg

    In the United States, people living in low-income neighborhoods frequently do not have access to affordable healthy food venues, such as supermarkets. Instead, those living in "food deserts" must rely on convenience stores and small neighborhood stores that offer few, if any, healthy food choices, …

  18. Committee on Achieving Sustainable Global Capacity for Surveillance and Response to Emerging Diseases of Zoonotic Origin, Board on Global Health, Institute of Medicine, Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council, Gerald T. Keusch, Marguerite Pappaioanou, Mila C. González, Kimberly A. Scott, Peggy Tsai - Sustaining Global Surveillance and Response to Emerging Zoonotic Diseases, E-bok. Tillgänglighet: Lägg i varukorg

    Sustaining Global Surveillance and Response to Emerging Zoonotic Diseases

    Av Committee on Achieving Sustainable Global Capacity for Surveillance and Response to Emerging Diseases of Zoonotic Origin, Board on Global Health m. fl.

    E-bok, 2009

    642 kr

    Lägg i varukorg

    H1N1 ("swine flu"), SARS, mad cow disease, and HIV/AIDS are a few examples of zoonotic diseases-diseases transmitted between humans and animals. Zoonotic diseases are a growing concern given multiple factors: their often novel and unpredictable nature, their ability to emerge anywhere and spread …

  19. Food and Nutrition Board, Board on Agriculture and Natural Resources, Board on Population Health and Public Health Practice, Institute of Medicine, National Research Council, Paula Tarnapol Whitacre, Peggy Tsai, Janet Mulligan - Public Health Effects of Food Deserts, E-bok. Tillgänglighet: Lägg i varukorg

    Public Health Effects of Food Deserts

    Workshop Summary

    Av Food and Nutrition Board, Board on Agriculture and Natural Resources m. fl.

    E-bok, 2009

    589 kr

    Lägg i varukorg

    In the United States, people living in low-income neighborhoods frequently do not have access to affordable healthy food venues, such as supermarkets. Instead, those living in "food deserts" must rely on convenience stores and small neighborhood stores that offer few, if any, healthy food choices, …

  20. Committee on the Impact of Biotechnology on Farm-Level Economics and Sustainability, Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council - Impact of Genetically Engineered Crops on Farm Sustainability in the United States, E-bok. Tillgänglighet: Lägg i varukorg

    Impact of Genetically Engineered Crops on Farm Sustainability in the United States

    Av Committee on the Impact of Biotechnology on Farm-Level Economics and Sustainability, Board on Agriculture and Natural Resources m. fl.

    E-bok, 2010

    650 kr

    Lägg i varukorg

    Since genetically engineered (GE) crops were introduced in 1996, their use in the United States has grown rapidly, accounting for 80-90 percent of soybean, corn, and cotton acreage in 2009. To date, crops with traits that provide resistance to some herbicides and to specific insect pests have …

  21. Committee on Twenty-First Century Systems Agriculture, Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council - Toward Sustainable Agricultural Systems in the 21st Century, E-bok. Tillgänglighet: Lägg i varukorg

    Toward Sustainable Agricultural Systems in the 21st Century

    Av Committee on Twenty-First Century Systems Agriculture, Board on Agriculture and Natural Resources m. fl.

    E-bok, 2010

    866 kr

    Lägg i varukorg

    In the last 20 years, there has been a remarkable emergence of innovations and technological advances that are generating promising changes and opportunities for sustainable agriculture, yet at the same time the agricultural sector worldwide faces numerous daunting challenges. Not only is the …

  22. Committee on Achieving Sustainable Global Capacity for Surveillance and Response to Emerging Diseases of Zoonotic Origin, Board on Global Health, Institute of Medicine, Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council, Gerald T. Keusch, Marguerite Pappaioanou, Mila C. González, Kimberly A. Scott, Peggy Tsai - Sustaining Global Surveillance and Response to Emerging Zoonotic Diseases, E-bok. Tillgänglighet: Lägg i varukorg

    Sustaining Global Surveillance and Response to Emerging Zoonotic Diseases

    Av Committee on Achieving Sustainable Global Capacity for Surveillance and Response to Emerging Diseases of Zoonotic Origin, Board on Global Health m. fl.

    E-bok, 2009

    892 kr

    Lägg i varukorg

    H1N1 ("swine flu"), SARS, mad cow disease, and HIV/AIDS are a few examples of zoonotic diseases-diseases transmitted between humans and animals. Zoonotic diseases are a growing concern given multiple factors: their often novel and unpredictable nature, their ability to emerge anywhere and spread …

  23. Committee on the Strategic Planning for the Florida Citrus Industry: Addressing Citrus Greening Disease (Huanglongbing), Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council - Strategic Planning for the Florida Citrus Industry, E-bok. Tillgänglighet: Lägg i varukorg

    Strategic Planning for the Florida Citrus Industry

    Addressing Citrus Greening Disease

    Av Committee on the Strategic Planning for the Florida Citrus Industry: Addressing Citrus Greening Disease (Huanglongbing), Board on Agriculture and Natural Resources m. fl.

    E-bok, 2010

    864 kr

    Lägg i varukorg

    Citrus greening, a disease that reduces yield, compromises the flavor, color, and size of citrus fruit and eventually kills the citrus tree, is now present in all 34 Floridian citrus-producing counties. Caused by an insect-spread bacterial infection, the disease reduced citrus production in 2008 by …

  24. Committee on the Review of the Food and Drug Administration's Role in Ensuring Safe Food, Food and Nutrition Board, Board on Agriculture and Natural Resources, Institute of Medicine, National Research Council, Robert B. Wallace, Maria Oria - Enhancing Food Safety, E-bok. Tillgänglighet: Lägg i varukorg

    Enhancing Food Safety

    The Role of the Food and Drug Administration

    Av Committee on the Review of the Food and Drug Administration's Role in Ensuring Safe Food, Food and Nutrition Board m. fl.

    E-bok, 2010

    951 kr

    Lägg i varukorg

    Recent outbreaks of illnesses traced to contaminated sprouts and lettuce illustrate the holes that exist in the system for monitoring problems and preventing foodborne diseases. Although it is not solely responsible for ensuring the safety of the nation''s food supply, the U.S. Food and Drug …

  25. Committee on the Strategic Planning for the Florida Citrus Industry: Addressing Citrus Greening Disease (Huanglongbing), Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council - Strategic Planning for the Florida Citrus Industry, E-bok. Tillgänglighet: Lägg i varukorg

    Strategic Planning for the Florida Citrus Industry

    Addressing Citrus Greening Disease

    Av Committee on the Strategic Planning for the Florida Citrus Industry: Addressing Citrus Greening Disease (Huanglongbing), Board on Agriculture and Natural Resources m. fl.

    E-bok, 2010

    953 kr

    Lägg i varukorg

    Citrus greening, a disease that reduces yield, compromises the flavor, color, and size of citrus fruit and eventually kills the citrus tree, is now present in all 34 Floridian citrus-producing counties. Caused by an insect-spread bacterial infection, the disease reduced citrus production in 2008 by …

  26. Committee on the Impact of Biotechnology on Farm-Level Economics and Sustainability, Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council - Impact of Genetically Engineered Crops on Farm Sustainability in the United States, E-bok. Tillgänglighet: Lägg i varukorg

    Impact of Genetically Engineered Crops on Farm Sustainability in the United States

    Av Committee on the Impact of Biotechnology on Farm-Level Economics and Sustainability, Board on Agriculture and Natural Resources m. fl.

    E-bok, 2010

    953 kr

    Lägg i varukorg

    Since genetically engineered (GE) crops were introduced in 1996, their use in the United States has grown rapidly, accounting for 80-90 percent of soybean, corn, and cotton acreage in 2009. To date, crops with traits that provide resistance to some herbicides and to specific insect pests have …

  27. Committee on Twenty-First Century Systems Agriculture, Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council - Toward Sustainable Agricultural Systems in the 21st Century, E-bok. Tillgänglighet: Lägg i varukorg

    Toward Sustainable Agricultural Systems in the 21st Century

    Av Committee on Twenty-First Century Systems Agriculture, Board on Agriculture and Natural Resources m. fl.

    E-bok, 2010

    1299 kr

    Lägg i varukorg

    In the last 20 years, there has been a remarkable emergence of innovations and technological advances that are generating promising changes and opportunities for sustainable agriculture, yet at the same time the agricultural sector worldwide faces numerous daunting challenges. Not only is the …

  28. Kansas Committee on the Evaluation of a Site-Specific Risk Assessment for the Department of Homeland Security's Planned National Bio-and Agro-Defense Facility in Manhattan, Board on Life Sciences, Board on Agriculture and Natural Resources, Division on Earth and Life Studies, National Research Council - Evaluation of a Site-Specific Risk Assessment for the Department of Homeland Security's Planned National Bio- and Agro-Defense Facility in Manhattan, Kansas, E-bok. Tillgänglighet: Lägg i varukorg

    Evaluation of a Site-Specific Risk Assessment for the Department of Homeland Security's Planned National Bio- and Agro-Defense Facility in Manhattan, Kansas

    Av Kansas Committee on the Evaluation of a Site-Specific Risk Assessment for the Department of Homeland Security's Planned National Bio-and Agro-Defense Facility in Manhattan, Board on Life Sciences m. fl.

    E-bok, 2010

    477 kr

    Lägg i varukorg

    Congress requested that the U.S. Department of Homeland Security (DHS) produce a site-specific biosafety and biosecurity risk assessment (SSRA) of the proposed National Bio- and Agro-Defense Facility (NBAF) in Manhattan, Kansas. The laboratory would study dangerous foreign animal diseases—including …

  29. National Research Council, Division on Earth and Life Studies, Board on Agriculture and Natural Resources, Committee on the Nutrient Requirements of Fish and Shrimp - Nutrient Requirements of Fish and Shrimp, Inbunden. Tillgänglighet: Lägg i varukorg

    Nutrient Requirements of Fish and Shrimp

    Av National Research Council, Division on Earth and Life Studies m. fl.

    Inbunden, 2011

    1400 kr

    Lägg i varukorg

    Aquaculture now supplies half of the seafood and fisheries products consumed worldwide and is gaining international significance as a source of food and income. Future demands for seafood and fisheries products can only be met by expanded aquaculture production. Such production will likely become …

  30. Committee on the Review of the Food and Drug Administration's Role in Ensuring Safe Food, Food and Nutrition Board, Board on Agriculture and Natural Resources, Institute of Medicine, National Research Council, Robert B. Wallace, Maria Oria - Enhancing Food Safety, E-bok. Tillgänglighet: Lägg i varukorg

    Enhancing Food Safety

    The Role of the Food and Drug Administration

    Av Committee on the Review of the Food and Drug Administration's Role in Ensuring Safe Food, Food and Nutrition Board m. fl.

    E-bok, 2010

    1159 kr

    Lägg i varukorg

    Recent outbreaks of illnesses traced to contaminated sprouts and lettuce illustrate the holes that exist in the system for monitoring problems and preventing foodborne diseases. Although it is not solely responsible for ensuring the safety of the nation''s food supply, the U.S. Food and Drug …