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Chromium applied to a noncalcareous soil at 50 ppm did not decrease yields of bush beans (Phaseolus vulgaris L. var Improved Tendergreen), but when EDTA (ethylenediamine tetraacetic acid) was added with it, it did. Very little Cr was present in leaves. In solution culture 10-5 M Cr and higher were toxic. With solution culture the highest level of Cr in(More)
Metronomic chemotherapy suppresses growth of primary tumors and established metastases. However, its effect on metastatic progression is essentially unknown. We report the treatment of a metastatically competent model of pancreatic cancer with metronomic gemcitabine and sunitinib. Mice with orthotopic, red fluorescent protein-expressing, pancreatic cancer(More)
Measurements of 90Sr and 137Cs in soil, vegetation and small mammals were made periodically at sites in southern Nevada and Utah that were contaminated by radioactive fallout from nuclear detonations at the Nevada Test Site (NTS) as well as from global sources. Results from a survey in 1980 indicate that both of these fallout-derived radionuclides have(More)
Beryllium in nutrient solution inhibited the growth of bush beans. The initial symptom was retarded root development. Although severe stunting of plants occurred, the foliage retained normal color. Roots accumulated beryllium. Increased beryllium concentrations decreased calcium in roots, stems, leaves, and fruits, and also decreased magnesium in roots and(More)
We have conducted experiments to evaluate the effectiveness of removing contaminated soils from the Nevada Test Site with a large truck-mounted vacuum cleaner. Our results show that this method is effective, relatively easy, and safe for equipment operators. With four passes of the truck-mounted vacuum, 92% of the 241Am (and the accompanying 239 + 240Pu)(More)
The amounts of Sr90 taken up from Vina soil varied among several different crop plants by a factor as high as 10 on the basis of dry weight. The relative decreasing order of Sr90 uptake by mature plant tops was turnip = millet > Swiss chard > Ladino clover > broccoli > soybeans > barley > oats > wheat > spinach. For each of the cereal crops, the(More)
The present series of studies was made to assess the potential toxicity of Sn to plants. Tin as SnCl2 was applied to bush bean plants (Phaseolus vulgaris L. var. Improved Tendergreen) grown in Yolo loam (pH 6) and Hacienda loam (calcareous) soils at rates of up to 500 ppm of dry weight of soil. Yields were slightly decreased at the highest application rate.(More)
Bean and barley plants were cultured in nutrient solutions and subsequently treated to include a control and 10 me of NaCl, NaNO3, Na2SO4, or NaHCO3 added per liter. The content of P32, Ca45, Fe59, Rb86, Sr90, Ru106, Cs137, or Ce144 in the shoots was determined after an 8-hour period on treatment. The presence of added bicarbonate very significantly reduced(More)
Between 1970 and 1986 the Nevada Applied Ecology Group (NAEG), U.S. Department of Energy, conducted environmental radionuclide studies at weapons-testing sites on or adjacent to the Nevada Test Site. In this paper, NAEG studies conducted at two nuclear (fission) sites (NS201, NS219) and two nonnuclear (nonfission) sites (Area 13 [Project 57] and Clean Slate(More)