Materials Literature
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Aluminum matrix composites reinforced with SiC particles (SiC p ) were prepared by electromagnetic stirring. This article aims to study the effects of SiC p addition on microstructure and mechanical properties of SiC p /ZL105, finally leading to expended range for ZL105 alloy application. Microstructural studies were…
Specifics of the development of emergency situations at the pipeline transportation facilities with accidental damage of the elements are considered. It is shown that the ability of the system to withstand process development of the progressive blocking of hubs should be estimated using the resistance index, which rep…
Редокс-свойства биядерных гетерометаллических комплексов: Cp(CO)2MnPt(μ-C1=C2HPh) \n(L)(L’) [L = L’ = PPh3 (1); L = PPh2H; L’ = PPh3 (2); L = CO, L’ = PPh3 (3); L = L’ = P(OPri)3 (4); \nL = PPh2H; L’ = P(OPri)3 (5); L = CO, L’ = P(OPri)3 (6)], изучены электрохимическими методами \nна платиновом, стеклоуглеродном и рту…
The article presents the strength research results of the improved structure of the open-top car of bodywork during transportation on the railway ferry. The peculiarity of the car is the presence of nodes for fastening chain screeds in its supporting structure. In order to determine the dynamic loads that effects the…
The article covers several mathematical problems relating to elastic stability of thin shells in view of inconsistencies that have been recently identified between the experimental data and the predictions based on the shallow- shell theory. It is highlighted that the contradictions were caused by new algorithms that…
To prevent the formation of ice on aircrafts, de-icing systems are incorporated into various structures. These can consist of multi functional composite structures. To maintain control over the production of these systems, the composite must be formed in stages. Although there is a significant body of literature descr…
The aim of this research is to study the affecting factors on the dielectric strength of polymeric blend [of Epoxy resin and unsaturated polyester] and its composites. A Nano composites were prepared based on polymeric blend ( 80% Ep + 20% UPE), supported by Nano Piezoelectric powder (PZT), of crystalline size (1-10 n…
El propósito principal en este trabajo es determinar evento por evento el conteo, la distribución de energía, la distribución de momento y la distribución angular de las partículas producidas en la reacción nuclear principal que tiene lugar en la terapia de captura neutrónica por boro (BNCT) [10B (n, α)7Li]. Además de…
Приведены свойства антиадгезионных покрытий на основе кремнийорганических соединений. Показано влияние строения кремнийорганических соединений, катализаторов отверждения и их содержания на основные свойства антиадгезионных покрытий. Приведены режимы отверждения покрытий и показана эффективность применения антиадгезион…
of two naphthopyrandione derivatives with cycloalkanespirohydantoins towards some phytopathogenic and beneficial microorganisms are investigated and presented in this work. Materials and methods. The title compounds are obtained following a known procedure. The agar well diffusion test is applied to determine the anti…
Molecular mobility and charge transport in R-SOD aromatic thermoplastic polyimide was studied by dielectric method. Dielectric spectra of all PI samples in the examined temperature and frequency range revealed one region of dipole polarization relaxation. The γ -process can be linked to the local mobility of phenylene…
In the report at the previous seminar in 2015 the system of monitoring and managing of proton beam distribution on the target in the cyclotron RIC-14 was presented. In this report we describe an updated system for the U-150 cyclotron and analyze the experience of its maintenance. The presented data confirm the fact th…
It is shown theoretically that due to the flexoelectric effect the electric field driven Frèedericksz transition can take place in chiral nematic (cholesteric) liquid crystal with negative dielectric anisotropy. It is especially noteworthy, since such a transition in a plane parallel cell is impossible in the absence…
Inelastic electron tunneling in a tunnel junction may be used as an electrical nanosource of surface plasmon polaritons and photons. In this work, we investigate emission from tunnel contact between the tungsten tip with Au coating and a thin Au film on glass. The experiment has shown that intensity of this emission d…
In this report, we demonstrate that the use of GaN seeding layer prepared by droplet epitaxy technique using plasma assisted molecular beam epitaxy (PA-MBE) can lead to the epitaxial stabilization of GaN nanostructures with different lattice orientations. From the high-resolution transmission electron microscopy (HRTE…
One of the methods in assessing the quality of gemstones is by observing the degree of scattering of visible light inside or on the surface of the gemstones.This scattering phenomenon is determined by its optical characteristic and its stoichiometric compounds.In this study we analyze the internal scattering of red 63…
Abstract The processes leading to the formation of toxic beryllium-containing aerosol particles at the stages of beryllium hydroxide production using a new innovative technology of ore processing at the Ermakovskoe deposit are considered. In order to create a conceptual structure of experimental samples of the units f…
We have theoretically studied current self-oscillations in double-layer graphene n+nn+ diodes driven by dc bias with the help of a time-dependent hydrodynamic model. The current self-oscillation results from resonant tunneling in the double-layer graphene structure. A detailed investigation of the dependence of the cu…
The paper presents the kinetic theory-based model of dynamic mechanical behavior of brittle solids. The model adopts the ideas of the kinetic theory of strength which postulate the finite time of nucleation of discontinuities and relaxation of local stresses in the material. The model is a generalization of the formal…
Fuels for land and marine diesel engines and for nonaviation gas turbines consist of diesel or biodiesel blends used in diesel engines or nonaviation gas turbine engines. The broad definition of fuels for land and marine diesel engines and for nonaviation