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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)
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)
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)
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)
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)
The mineral composition of 16 samples of dodder (Cuscuta nevadensis Johnston) and leaves of eight species of its host plants collected from the northern Mojave Desert were examined to determine relationships between parasitism and transport of mineral elements from the host to the parasite. The K concentration of dodder was fairly constant for a wide range(More)