Evolution of vacancy pores in bounded particles

In the present work, the behavior of vacancy pore inside of spherical particle is investigated. On the assumption of quasistationarity of diffusion fluxes, the nonlinear equation set was obtained analytically, that describes completely pore behavior inside of spherical particle. Limiting cases of small and large pores are considered. The comparison of numerical results with asymptotic behavior of considered limiting cases of small and large pores is discussed.Comment: 25 pages, 10 figure

Comparative Assessment of the Factors and Conditions of the Formation of the Neoindustrial Social State in Russia and Germany

Russia and Germany are traditionally reputed as countries with socially oriented economies. Namely, these countries are also close by the index of the share of real sector of economy at GDP. And however, Germany is a founder of social market household largely defined its leadership in world economy, in current conditions of crisis of “the state of general welfare” the search of a new model of development for Germany is also important as for Russia stood on the way of modernization and neo-industrialization. In the article, the hypothesis about forming of the new model of development uniting the social orientation of economy, processes of neoindustrialization, and globalization is made. At the same time, the social orientation is the main aim of socio-economic development, neo-industrialization is a way to achieve it, and globalization is a criterion presupposing more effective use of resources. Theoretical backgrounds of development of “social state” are generalized in the works of German and Russian classics put the backgrounds of economic humanism, it has allowed to prove the fatality of modernization process without considering of deep mental backgrounds and civilization codes of the nation development. The methodological approaches to development of a new model of neo-industrial social state with emphasizing different levels: global, national, local, individual are worked out; and the technique for estimation of factors and conditions of its development is proposed. The technique is tested on the example of Russia and Germany. The comparative analysis conducted has allowed to make the conclusion about similarity of target guidelines, initial conditions, problems and ways of their solving in these countries, that is to be considered both in a strategy and a policy of socio-economic development of these countries and by their international partnership

The influence of surface morphology and wettability on the inflammatory response against poly(L-lactic acid): A semi-quantitative study with monoclonal antibodies

In this study, the influence of surface morphology and wettability of both degradable and nondegradable polymer films on the inflammatory response after subcutaneous implantation in the rat was investigated. Degradable nonporous, porous, and combi (porous with a nonporous layer on one side) poly(L-lactic acid) (PLLA) films and nondegradable polytetrafluoroethylene (PTFE) and (porous) expanded PTFE (e-PTFE) were used. Contact angles measurements indicate that PLLA is more hydrophillic than PTFE. Assessment of the inflammatory response was performed after various periods of implantation (up till 180 days), with both conventional light microscopy and immunohistochemistry using monoclonal antibodies (mAbs). The inflammatory response observed initially can largely be considered as part of the wound healing reaction, and up till day 40 the inflammatory response against PLLA was minimally more intense than against PTFE (porous as well as nonporous). From day 40 on, the PLLA films provoke a more intense inflammatory response as compared to the PTFE films. Both porous PLLA and the porous side of the combi PLLA film provoke a more intense inflammatory response than nonporous PLLA and the nonporous side of the combi PLLA film, respectively. In general, PTFE and e-PTFE films provoke an inflammatory response which is minimally more intense than the one provoked by the sham operation. Almost no ingrowth of tissue was observed in the porous e-PTFE films. In contrast, there was abundant tissue ingrowth in and an inflammatory response against porous PLLA. It can be concluded that biodegradable PLLA films provoke a more intense inflammatory response than nondegradable PTFE films. Also, porosity enhances the inflammatory response. However, porosity enhances the inflammatory response only when the wettability of a biomaterial permits cellular ingrowth

Molecular transport junctions: Current from electronic excitations in the leads

Using a model comprising a 2-level bridge connecting free electron reservoirs we show that coupling of a molecular bridge to electron-hole excitations in the leads can markedly effect the source-drain current through a molecular junction.In some cases, e.g. molecules that exhibit strong charge transfer transitions, the contribution from electron-hole excitations can exceed the Landauer elastic current and dominate the observed conduction.Comment: 4 pages, 2 figures, submitted to PR

Photoproduction of Long-Lived Holes and Electronic Processes in Intrinsic Electric Fields Seen through Photoinduced Absorption and Dichroism in Ca_3Ga_{2-x}Mn_xGe_3O_{12} Garnets

Long-lived photoinduced absorption and dichroism in the Ca_3Ga_{2-x}Mn_xGe_3O_{12} garnets with x < 0.06 were examined versus temperature and pumping intensity. Unusual features of the kinetics of photoinduced phenomena are indicative of the underlying electronic processes. The comparison with the case of Ca_3Mn_2Ge_3O_{12}, explored earlier by the authors, permits one to finally establish the main common mechanisms of photoinduced absorption and dichroism caused by random electric fields of photoproduced charges (hole polarons). The rate of their diffusion and relaxation through recombination is strongly influenced by the same fields, whose large statistical straggling is responsible for a broad continuous set of relaxation components (observed in the relaxation time range from 1 to about 1000 min). For Ca_3Ga_{2-x}Mn_xGe_3O_{12}, the time and temperature dependences of photoinduced absorption and dichroism bear a strong imprint of structure imperfection increasing with x.Comment: 20 pages, 10 figure

Integrating the educational principles of Maria Montessori in the process of pedagogical support for pupils with learning disabilities

© 2016, International Review of Management and Marketing. All rights reserved.The purpose of the present article was to search for new ways of individual pedagogical support for primary school children with learning disabilities. The article describes the mechanisms for putting the educational principles of Maria Montessori into the system of pedagogical support for children with learning disabilities, which apply the exercises of practical life to a real social environment. The objective of the exercises was to develop universal learning activities, e.g., the ability to plan and manage a child’s activity, to reflect its results, to build up communication, to encourage cognitive development