8 research outputs found

    In memory of E.G. Akramovskaya

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    Non-Specific Adsorption of Hydrocarbons on Microporous Surfaces: A Comprehensive Molecular-Statistical/Chromatographic Approach

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    The results are presented of a series of investigations concerning the application of the molecular-statistical approach to the calculation of thermodynamic quantities for the adsorption of molecules in the Henry region on adsorbent surfaces possessing certain surface symmetry properties, and in particular for systems characterized by dispersion and polarization attraction and short-range atom-atom repulsion. Computational methods have been developed and the results for particular adsorption systems are presented with emphasis on the adsorption properties of layer silicates. Good correspondence between the calculated results and chromatographic data for a number of adsorbents strongly supports the view that the combination of chromatographic and molecular-statistical methods provides a powerful tool for the investigation of the structural and adsorption-selective characteristics of surface-porous adsorbents

    Notes to the fauna and distribution of assassin bugs (Heteroptera: Reduviidae) of Voronezh Region (Russia)

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    Five species of assassin bugs (Heteroptera: Reduviidae) are identified on the territory of Voronezh Region (Russia). Reduvius personatus (Linnaeus, 1758) is recorded for the region for the first time. Data on the studied material and distribution for each species are given

    Study of the Structure of a Surface-porous Adsorbent using the Gas Chromatographic Version of the Molecular Probe method

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    Results are presented of structural studies of a silica-based surface-porous adsorbent. It is shown that a reliable estimate of the size of the surface micropores of this adsorbent can be obtained using the gas chromatographic version of the molecular probe method. This is based on a comparison of the thermodynamic properties for the adsorption of substances of known molecular size on the surface-porous adsorbent with those characteristic for the adsorption of the same substances on to a non-porous adsorbent of a similar chemical nature
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