117,676 research outputs found

    Fonctions convexes et theorie du potentiel. (I)

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    SommaireLa détermination de la plus glande fonction convexe sur une partie ouverte et convexe d'un espace localement convexe E, minorant une fonction frontière donnée, définit un problème de Dirichlet et même une théorie locale du potentiel non-linéaire dans E

    Development of an apparatus for obtaining molecular beams in the energy range from 2 to 200 eV

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    The formation and detection of molecular beams obtained by charge exchange from a low-energy ion source is discussed. Dispersion in energy of the ion source was measured and problems concerning detection of neutral beams were studied. Various methods were used, specifically secondary electron emissivity of a metallic surface and ionization of a gas target with a low ionization voltage. The intensities of neutral beams as low as 10 eV are measured by a tubular electron multiplier and a lock-in amplifier

    Etude Sur la Stratégie et le Programme D'appui à la Société Civile Burundaise

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    The author study's strategies and programs to build civil society in Burundi
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