4,082 research outputs found

    Standardized Pearson type 3 density function area tables

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    Tables constituting extension of similar tables published in 1936 are presented in report form. Single and triple parameter gamma functions are discussed. Report tables should interest persons concerned with development and use of numerical analysis and evaluation methods

    Optical Properties of Crystals with Spatial Dispersion: Josephson Plasma Resonance in Layered Superconductors

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    We derive the transmission coefficient, T(ω)T(\omega), for grazing incidence of crystals with spatial dispersion accounting for the excitation of multiple modes with different wave vectors k{\bf k} for a given frequency ω\omega. The generalization of the Fresnel formulas contains the refraction indices of these modes as determined by the dielectric function ϵ(ω,k)\epsilon(\omega,{\bf k}). Near frequencies ωe\omega_e, where the group velocity vanishes, T(ω)T(\omega) depends also on an additional parameter determined by the crystal microstructure. The transmission TT is significantly suppressed, if one of the excited modes is decaying into the crystal. We derive these features microscopically for the Josephson plasma resonance in layered superconductors.Comment: 4 pages, 2 figures, epl.cls style file, minor change

    Field Dependence of the Josephson Plasma Resonance in Layered Superconductors with Alternating Junctions

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    The Josephson plasma resonance in layered superconductors with alternating critical current densities is investigated in a low perpendicular magnetic field. In the vortex solid phase the current densities and the squared bare plasma frequencies decrease linearly with the magnetic field. Taking into account the coupling due to charge fluctuations on the layers, we extract from recent optical data for SmLa_{1-x} Sr_x CuO_{4-delta} the Josephson penetration length lambda_{ab} approximately 1100 A parallel to the layers at T=10 K.Comment: 5 pages, 6 eps-figures, final version with minor misprints correcte

    Inibição do crescimento de fungos do gênero Aspergillus produtores de ocratoxina a por extratos aquosos de erva-mate.

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    Editores técnicos: Marcílio José Thomazini, Elenice Fritzsons, Patrícia Raquel Silva, Guilherme Schnell e Schuhli, Denise Jeton Cardoso, Luziane Franciscon. EVINCI. Resumos

    Management of Korean lespedeza

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    Caption title.Digitized 2006 AES MoU."December, 1940.""Korean lespedeza gives best results where left on the land year after year. This is true under all soil conditions, and it is especially important on the less productive land. Lower- production costs are reached by taking advantage of the ability of lespedeza to reseed itself heavily under almost any use of the crop. By this annual reseeding habit a renewed stand every spring is practically assured."--Page 1

    Northeast Missouri crops experiment field : second annual report, 1925

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    Caption title.Digitized 2006 AES MoU

    Corn in Missouri. II, Field methods that increase the corn crop

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    Corn selection for exhibit purposes

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    Caption title.Digitized 2006 AES MoU

    Meadow and pasture management in the Ozark Region of Missouri

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