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Showing: 1-10 results of 703

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.

Spatial thinking - a constructive combination of concepts of space, tools of representation, and processes of reasoning - uses space to structure problems, find answers, and express solutions. It is powerful and pervasive in science, the workplace, and everyday life. By visualizing relationships within spatial structures, we can perceive, remember, and analyze the static and dynamic properties of objects and the relationships between objects. Despite... more...

The book endorses the National Science Foundation's concept of the National Ecological Observatory Network (NEON) for providing a nationwide network of facilities and infrastructure for ecological and environmental research that is impossible with existing infrastructure. The committee identified six grand challenges in environmental biology - biodiversity, biogeochemical cycles, climate change, ecology and evolution of infectious... more...

The Committee on Dosimetry for the Radiation Effects Research Foundation (RERF) was set up more than a decade ago at the request of the U.S. Department of Energy. It was charged with monitoring work and experimental results related to the Dosimetry System 1986 (DS86) used by RERF to reconstruct the radiation doses to the survivors in Hiroshima and Nagasaki. At the time it was established, DS86 was believed to be the best available... more...

The report identified various factors which contributed to creating an unfulfilled need for veterinarians in the biomedical research workforce, including an increase in the number of NIH grants utilizing animals and the burgeoning use of transgenic rodents, without a comparable change in the supply of appropriately-trained veterinarians. The committee developed strategies for recruiting more veterinarians into careers in biomedical... more...


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 more intensive and will depend increasingly on nutritious and efficient aquaculture feeds containing ingredients from sustainable sources.... more...

In this first in a proposed series of workshops on regulatory issues in animal care and use, the Institute for Laboratory Animal Research (ILAR) has addressed the existing and proposed requirements for reporting pain and distress in laboratory animals. The Animal Welfare Act, administered by the Animal and Plant Health Inspection Service of the United States Department of Agriculture (USDA), mandates that pain and distress in... more...

Biomonitoring&#8212a method for measuring amounts of toxic chemicals in human tissues&#8212is a valuable tool for studying potentially harmful environmental chemicals. Biomonitoring data have been used to confirm exposures to chemicals and validate public health policies. For example, population biomonitoring data showing high blood lead concentrations resulted in the U.S. Environmental Protection Agency's (EPA's) regulatory... more...

In 2003, the Defense Intelligence Agency asked the NRC to form a standing committee to help develop study topics about technology warning. One issue that was identified was the growing dependence on foreign suppliers of critical technology as a result of the increase in globalization of economic activity. Two important questions emerged for study: what is the risk of denial of critical products from foreign sources and what must the... more...

Environmental data centers have been successfully acquiring, disseminating, and archiving data for decades. However, the increasing volume and number of data sets, coupled with greater demands from more diverse users, are making it difficult for data centers to maintain the record of environmental change. This workshop report focuses on technological approaches that could enhance the ability of environmental data centers to deal with... more...