نتایج جستجو برای: us department of agriculture
تعداد نتایج: 21198995 فیلتر نتایج به سال:
Specific data on vitamin D2 and vitamin D3 are needed to enable the assessment of vitamin D dietary intake. These forms of the vitamin can occur in foods, both naturally or from fortification. The Nutrient Data Laboratory at the Beltsville Human Nutrition Research Center, Agricultural Research Service, US Department of Agriculture collaborated with vitamin D experts in an analytic project with ...
USDA-ARS, Agricultural Systems Research Unit, 2150 Centre Ave., Bldg. D, Suite 200, Fort Collins, CO 80526, USA Department of Soil and Crop Sciences, C127 Plant Sciences, Colorado State University, Fort Collins, CO 80523, USA Department of Civil and Environmental Engineering, Colorado State University, Fort Collins, CO 80523, USA Department of Agricultural and Resource Economics, Colorado State...
According to current statistics (USDA, 2015), nonmetro populations are seeing a 4-year trend of declining population(s). Although this decline in residents has not been equitably distributed across all of rural America, this tendency has a direct correlation to the foundational message of Aging in Rural Places, and how this migration in rural areas is impacting older adults, aging in place, car...
a National Soil Erosion Research Laboratory, 275 South Russell Street, Purdue University, 47907-2077, West Lafayette, IN, USA b Department of Agricultural Engineering, Federal University of Lavras, C.P. 3037, 37200-000, Lavras, MG, Brazil c USDA-ARS National Soil Erosion Research Laboratory, 275 South Russell Street, Purdue University, 47907-2077, West Lafayette, IN, USA d Department of Soil Sc...
Peter J. Johnson*, Noel T. Keen, Joan K. Lunney and Michael J. Sadowsky 1 USDA-CSREES-National Research Initiative, Stop 2241, 1400 Independence Avenue SW, Washington, DC 20250-2241, USA 2 Plant Pathology Department, University of California at Riverside, Riverside, CA 92521, USA 3 Immunology and Disease Resistance Laboratory, ANRI, ARS, USDA, Building 1040, Room 107, Beltsville, MD 20705, USA ...
over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...
in this investigation the effect of external field on the electron density of nanostructures of cds, cdse, cdte, gaas and polymeric structure of three, four, five and six units of cds as a kind of nanosolar cells has been studied theoretically. as modeling this system in nanodimension, molecular structures has used. specific properties of molecular structures permit us to consider different sym...
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