2,185 research outputs found

    STATE SUPPORT IN PHYSICAL INFRASTRUCTURE UPDATING OF AGRICULTURAL ENTERPRISES

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    The basic constituents of state support of technical update of agriculture of Ukraine are considered in the article. The dynamics of expenses of the state budget on agriculture and the structure of basic market levers of state support of physical infrastructure of agricultural enterprises: financial leasing, partial indemnification of domestic agricultural machinery and reduction of prices for credits has been analyzed. Monitoring of current problems of granting and the ways of improvement of mechanism of state support have been offered. No doubt that the proper support from the side of the state is the motive force in activation of the process of technical update of agricultural enterprises.The basic constituents of state support of technical update of agriculture of Ukraine are considered in the article. The dynamics of expenses of the state budget on agriculture and the structure of basic market levers of state support of physical infrastructure of agricultural enterprises: financial leasing, partial indemnification of domestic agricultural machinery and reduction of prices for credits has been analyzed. Monitoring of current problems of granting and the ways of improvement of mechanism of state support have been offered. No doubt that the proper support from the side of the state is the motive force in activation of the process of technical update of agricultural enterprises

    Культурно-развлекательный комплекс в Улан-Удэ

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    ONBOARD CONTROL SYSTEM OF DRIVER’S HEALTH STATE

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    The method of driver’s health state determination by onboard ECG analysis system at vehicle driving is presented

    A kinetic and theoretical study of the borate catalysed reactions of hydrogen peroxide: the role of dioxaborirane as the catalytic intermediate for a wide range of substrates

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    Our recent work has provided new insights into the equilibria and species that exist in aqueous solution at different pHs for the boric acid – hydrogen peroxide system, and the role of these species in oxidation reactions. Most recently, (M. C. Durrant, D. M. Davies and M. E. Deary, Org. Biomol. Chem., 2011, 9,7249–7254), we have produced strong theoretical and experimental evidence for the existence of a previously unreported monocyclic three membered peroxide species, dioxaborirane, that is the likely catalytic species in borate mediated electrophilic reactions of hydrogen peroxide in alkaline solution. In the present paper, we extend our study of the borate–peroxide system to look at a wide range of substrates that include substituted dimethyl anilines, methyl-p-tolyl sulfoxide, halides, hydrogen sulfide anion, thiosulfate ,thiocyanate, and hydrazine. The unusual selectivity–reactivity pattern of borate catalysed reactions compared with hydrogen peroxide and inorganic or organic peracids previously observed for theorganic sulfides (D. M. Davies, M. E. Deary, K. Quill and R. A. Smith, Chem.–Eur. J., 2005, 11, 3552–3558) is also seen with substituted dimethyl aniline nucleophiles. This provides evidence that the pattern is not due to any latent electrophilic tendency of the organic sulfides and further supports dioxaborirane being the likely reactive intermediate, thus broadening the applicability of this catalytic system. Moreover, density functional theory calculations on our proposed mechanism involving dioxaborirane are consistent with the experimental results for these substrates. Results obtained at high concentrations of both borate and hydrogen peroxide require the inclusion the diperoxodiborate dianion in the kinetic analysis .A scheme detailing our current understanding of the borate–peroxide system is presented
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