3,171 research outputs found

    Study of vibrational excitation mechanisms of CO2 at high temperatures

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    Calculating vibrational excitation of CO2 for anharmonic coupling and normal mode at high temperatur

    Study of vibrational excitation mechanisms of carbon dioxide at high temperatures

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    Vibrational relaxation models of carbon dioxide at high temperature

    \u3ci\u3eLeucon (Crymoleucon) rossi\u3c/i\u3e, a New Species (Crustacea: Cumacea: Leuconidae) From the Shelf Waters of the Ross Sea (Antarctica), With a Key to the Genus \u3ci\u3eLeucon\u3c/i\u3e South of 60°S

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    A new leuconid cumacean, Leucon (Crymoleucon) rossi n. sp., is described from depths of 84 to 458 m in the Ross Sea off the Victoria Land coast. Leucon rossi n. sp. is distinguished from other members of the genus by a combination of characters including 1) a blunt, horizontally directed pseudorostrum) Without a distinctly protruding siphon; 2) strongly developed antennal notch; 3) entire dorsomedian margin of carapace appearing serrate, armed with 14 to 19 anteriorly Curved spines in female (up to 21 in subadult males); 4) a small, but distinct, spine behind the frontal lobe; and 5) the uropodal peduncle slightly shorter than the exopod. After Leucon antarcticus Zimmer, 1907, L. rossi was the second most frequently Occurring cumacean in the samples collected off Victoria Land. Statistical analyses showed significant differences in the proportion of carapace length and height of adult (all incubating in the present Study) and immature females compared to immature males; no adult males were available for study

    G82-596 Use and Management of Micronutrient Fertilizers in Nebraska

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    This NebGuide focuses on the use of the micronutrients zinc and iron. Of the 16 elements known to be essential for plant growth, 7 are used in very small amounts and are classified as micronutrients. These are zinc (Zn), iron (Fe), manganese (Mn), copper (Cu), boron (B), molybdenum (Mo) and chlorine (Cl). Micronutrients are supplied to plants from two sources: 1) soil minerals and 2) organic matter. They are released as the soil minerals break down over a period of time by weathering. The major portion of the micronutrients made available to plants, however, probably comes from the breakdown (mineralization) of the organic matter. Research studies have demonstrated that Nebraska soils can supply all of the micronutrients needed for plant growth except zinc and iron on some, but not all soils, and boron for alfalfa and sugar beets in a few isolated situations

    Influence of Fertilizer Nitrogen and Sulfur on Production of Malting Barley

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    Studies in north-central Nebraska from 1975 through 1977: 1. Evaluated the malting barley production potential of the irrigated sandy soils of the region. 2. Measured the effect of application of N and S on yield and quality of barley grown for malting purposes. 3. Investigated the ability of N analysis of barley in the vegetative stage to predict protein content of grain at harvest. Data gathered lead to the following conclusions: 1. The potential for production of malting barley on irrigated sandy soils of north-central Nebraska is limited. 2. Yields increased with the application of fertilizer N throughout the study although response varied with site and variety. 3. Application of fertilizer S had no effect on yield throughout the study. 4. Application of N increased the protein content of all grain varieties studied by approximately 2 to 3 percent. 5. Analysis of plant material collected at the boot stage for N provided a reliable indication of the grain protein content

    The University of Minnesota Supplemental Fertilizer Nitrogen Worksheet

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    The University of Minnesota Supplemental Fertilizer N Worksheet was developed as a simple, quick, reliable, and inexpensive alternative decision aid tool to assess potential fertilizer N losses. The worksheet is a series of three questions with multiple-choice answers. Depending on the answers, numbers are assigned for each question that are summed, and then the recommendation is made for supplemental N applications. It has been used with success for 10 years in Minnesota as a decision aid as well as an educational tool regarding fertilizer N management strategies

    Nitrogen Management Related to Groundwater Quality in Minnesota

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    ABSTRACT-Minnesota ranks fifth in overall fertilizer nitrogen (FN) use. Nitrogen is essential for crop production; however, there are concerns about this use relative to profitability and potential impacts on groundwater. There are many sources and sinks of nitrogen in ecosystems. The impact of agricultural management practices on groundwater requires that all sources and fates be considered before FN rates are determined. Research is underway to evaluate relationships between FN application for continuous com and movement of nitrate through soil profiles. Growers making N management decisions have to be able to evaluate the complex nature of N in the environment when they determine their crop needs. Computer software is under development to provide this information on a site specific basis

    The 8^8B Neutrino Spectrum

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    Knowledge of the energy spectrum of 8^8B neutrinos is an important ingredient for interpreting experiments that detect energetic neutrinos from the Sun. The neutrino spectrum deviates from the allowed approximation because of the broad alpha-unstable 8^8Be final state and recoil order corrections to the beta decay. We have measured the total energy of the alpha particles emitted following the beta decay of 8^8B. The measured spectrum is inconsistent with some previous measurements, in particular with a recent experiment of comparable precision. The beta decay strength function for the transition from 8^8B to the accessible excitation energies in 8^8Be is fit to the alpha energy spectrum using the R-matrix approach. Both the positron and neutrino energy spectra, corrected for recoil order effects, are constructed from the strength function. The positron spectrum is in good agreement with a previous direct measurement. The neutrino spectrum disagrees with previous experiments, particularly for neutrino energies above 12 MeV.Comment: 15 pages, 13 figures, 4 tables, submitted to Phys. Rev. C, typos correcte

    BUD REGENERATION AND ELECTRICAL POLARITIES IN PHASEOLUS MULTIFLORUS

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