224 research outputs found

    Avaliação das características de ácido húmico em solos sob adição de lodo de esgoto.

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    bitstream/CNPDIA/10275/1/PA23_98.pd

    Utilização da Espectroscopia de Ressonância Paramagnética Eletrônica para Avaliar a Presença de Impurezas em Adubos Orgânicos.

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    bitstream/CNPDIA/10476/1/CT67_2005.pd

    Caracterização das substâncias húmicas em solos orgânicos do Estado do Rio de Janeiro, sob diversas atividades agrícolas.

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    bitstream/item/62882/1/CNPS-PESQ.-AND.-5-99.pd

    Estudo comparativo de metodos de determinacao do teor de materia organica em organossolos.

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    bitstream/item/62865/1/CNPS-COM.-TEC.-2-99.pd

    New Results from the Cryogenic Dark Matter Search Experiment

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    Using improved Ge and Si detectors, better neutron shielding, and increased counting time, the Cryogenic Dark Matter Search (CDMS) experiment has obtained stricter limits on the cross section of weakly interacting massive particles (WIMPs) elastically scattering from nuclei. Increased discrimination against electromagnetic backgrounds and reduction of neutron flux confirm WIMP-candidate events previously detected by CDMS were consistent with neutrons and give limits on spin-independent WIMP interactions which are >2X lower than previous CDMS results for high WIMP mass, and which exclude new parameter space for WIMPs with mass between 8-20 GeV/c^2.Comment: 4 pages, 4 figure
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