Nano-SiC / Carbon Nanotubes Composites : Elaboration and Thermomechanical Properties
International audience
Materials Literature
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International audience
International audience
The discoveries of iron-based superconductors with relatively high transition temperature are under intense experimental and theoretical investigation. Here we present magnetotransport measurements on FeSe superconductor under hydrostatic pressure. We show that in Fe-deficient tetragonal FeSe binary compound, the onse…
The global trend of looking for more ecologically friendly, techniques manifested itself in the chemistry of carbon nanomaterials. The main principles of green chemistry emphasize how important it is to avoid the use, or at least to reduce the consumption, of organic solvents for a chemical process. And it is precisel…
Industrial and construction systems have an important role in development and improvement of construction production on the basis of use of modern means of mechanization and automation of construction processes. Introduction of automated control systems with use of economic-mathematical methods and software significan…
Hardening after surface burnishing is investigated, micro-hardness distribution along the length of low diameter holes machined with low interference is considered, the influence of the micro-hardness on the length of the machined surface is revealed.
In this work molecular simulations are used to probe the gas adsorption properties of amorphous chalcogenide nanopores. A realistic atom-scale model, derived by first-principles calculations, of glassy chalcogenide surface is considered for the present study. Nitrogen adsorption and condensation at 77 K in pores of di…
An original numerical procedure for treating the Saint-Venant’s problem for toroidal shells of arbitrary cross section under pressure and bending moment is suggested. The main attention of investigators is given to geometrically nonlinear effects. Two of them have a direct relation to Saint-Venant’s problem. The first…
Com o avancar da idade perde-se a elasticidade, colageno e fibras elasticas da pele, estas alteracoes provocam o envelhecimento facilitando o aparecimento de ruga e linhas de expressao. A busca por tratamentos esteticos vem crescendo constantemente atraves do uso de cosmeticos, cirurgias plasticas e eletroterapias, en…
The generation of grands projects that the country has, in its execution bears the important contribution of technical work such as welding. The University Santa Elena Peninsula, UPSE and multinational LINDE, ex AGA S.A., in order to strengthen the area of welding work in the province of Santa Elena, have signed a coo…
International audience
Due to the disparity in composition and mechanical properties of the osteochondral interface as well as the need for highly interconnected constructs, tissue engineering approaches for the regeneration of the osteochondral interface encounter unique challenges that are both biochemical and mechanical in nature. For th…
We describe a methodology to explore optimal conditions to excite surface modes in a glass-metamaterial-vacuum system (Kretschmann configuration) using both P and S polarized light. We calculate the electromagnetic dispersion relation of a metamaterial surface by solving Maxwell equations for both polarizations with a…
oral
Aim. To assess the antibacterial efficiency of disinfectants and antiseptics received by treatment-and-prophylactic institutions. Materials and methods. Bactericidal activity of 30 disinfectants and 31 antiseptics received by treatment-and-prophylactic institutions were assessed. V. V. Shkarin et al. method (2008) was…
Single-walled carbon nanotube-based field effect transistors have demonstrated highly promising gas sensing properties, especially a particularly strong sensitivity to humidity. The sensitivity to humidity impairs the use of the transistors in logic circuits, while the devices are usually very unstable as humidity sen…
Elasticities of substitution are the key parameters in CGE modeling. However an estimation and validation of the parameters is not straightforward. One ways is to use a historical data. A data on technological shifts between types of fuels and capital and fuels, observed in the past, could be used to calibrate or econ…
In this work, we report the size-dependent blue shift of the silver nanoparticle plasmon band in aqueous solution by means of UV/VIS spectroscopy. An oxidative dissolution scheme allows a gradual decrease in the particle sizes by controlled oxidation during recording of the optical spectra. Hence, all sizes until comp…
Susunan gigi yang tidak rapi akan membuat sisa makanan berlumpuk dengan mudah. Tumpukan ini menyebabkan lapisan enamel rusak sehingga gigi akan berlubang, oleh karena itu dianjurkan penggunaan kawat gigi. Kawat gigi di pasaran umumnya berbahan dasar nikel-titanium (Ni-Ti) atau stainless steel (NiCr). Kandungan Nikel p…
Based on the formed model of nanofilm crystal structures, changes of optical properties due to the presence of borders for the case of symmetrical ultrathin films are theoretically investigated in this paper. Influence of five border parameters on the occurrence of localized exciton states is examined, as well as thei…