Materials Literature
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Foreseeing the upcoming era of the carbon nanomaterials and their revolutionary applications, we have identified and explored the structural parameters of five effective precursors of the same -carbon black, soot obtained by the thermal decomposition of kerosene, diesel, paraffin wax and lubricant oil. Micro- Raman sp…
The metallic carbide precipitation was observed after the sensitization of AISI 304 stainless steel specimens in neutral flame by using oxy-fuel and slowly cooled in the air. Correlation between corrosion and X-Ray Diffraction (XRD) shows that the enrichment of Cr23C6 in the microstructure of AISI 304 worsens the pitt…
Structural and physical properties of layered chalcogenide superconductors are summarized. In particular, we review the remarkable properties of the Fe-chalcogenide superconductors, FeSe and FeTe-based materials. Furthermore, we introduce the recently discovered BiS2-based layered superconductors and discuss their pro…
Icosahedral phase (I-phase) is a relatively excellent strengthening phase in Mg alloys. Depending on their volume fraction, the yield strength of Mg–Zn–Y–Zr alloys can vary from 150 to 450 MPa at room temperature. Recently, the formation of I-phase has been considered as one of the most effective methods for developin…
The presence of a large inverse magnetocaloric effect around the martensitic transformation in Ni-Mn-Sn and Ni-Mn-In alloys is expected to lead to substantial cooling on applying a magnetic field. However, the occurrence of hysteresis around the transition causes limitations on adiabatic temperature-changes. We study…
Active control of defect structures and associated polarization switching in a ferroelectric material is achieved without compromising its ferroelectric properties. Based on dipolar interaction between defect dipole and polarization, the unique functionality of the defect dipole to control ferroelectric switching is v…
Polystyrene nanospheres have been synthesized by atom transfer radical polymerization (ATRP) to control the molecular weight distribution in the aqueous system. The crucial factor in such a system is the ligand that adjusts the solubility of the catalyst in different phases to control the concentration of both the act…
The modification of Romanovsky algorithm for the approximate solution to the homogeneous allocation problem is developed. The modification involves lower resource requirements as against the original algorithm. The changes in the original algorithm which permit to provide a more effective procedure of loading executor…
The theoretical research on the “image of the world” and “cognitive map” concepts is resulted. Their basic constituents are identified and described. The qualitative analysis of the obtained data is given.
Some computer simulation issues on the automatic transfer for the water pump powerful high voltage induction motors are considered. The occurrence of more and less beneficial supply voltage spacing intervals for the water hammer characteristics is revealed.
Attitude towards life - death during the antiquity and in the Middle Ages is considered. The comparative analysis of these phases of history is given. The author presents a number of reasons to explain the established attitude towards life and death in the given cultures.
The technique of the hydrodynamic calculation of the gasdynamic journal bearing working on the conducting gas lubrication is presented. The analytical prediction problem on the friction bearing operation stability is solved. The assessment of the effect of Hartmann number, the gas compressibility parameter, and the el…
Approaches to the tender system development by the example of introducing the computer program which provides the anticorruption component of the construction market activities are formulated.
Innovation processes in the modern society are considered from the sociocultural point of view. Some crisis phenomena (such as archaicism of culture) occurring under the “innovation chaos” conditions in the changeable socium are defined.
The essence, combination, and interaction of the regional economy subsystems are considered. The environment subsystem is distinguished as the basic one. The block of indicators characterizing one or another subsystem is revealed. The key indicators are selected from the block, and on their basis, the economies of the…
The definition of the "knowledge economy" category is given. The place and role of the innovation transfer process in the knowledge economy is defined. The content of the "innovation firm" concept is revealed. It is proved that the importance of the innovative-active enterprises increases in the higher vocational educ…
The reduction technique of 2,2,5,5-tetramethylpyrroline compounds to pyrrolidines on sodium amalgam preformed under the electrolysis of sodium hydroxide solution is described.
The possibility of determining the air motion fields, temperatures, and the concentrations of harmfu l substances, based o n the finite - element simulation of the pollution mass transfer processes in the occupational environment with regard to the air flow turbulence is studied.
Basic types of borrowings into the English and Russian sports slang are considered. The author conducts the contrastive analysis of the lexical material in both genetic and structural aspects. The conclusion includes the results revealing general and specific features of the slangs in question. The dependence of the b…
A series of polymeric alloying films were prepared from bisphenol A/aniline-based bifunctional benzoxazine resin (BA-a) with three isomeric biphenyltetracarboxylic dianhydrides, i.e., 2,3,'3,4'-biphenyltetra carboxylic dianhydride (a-BPDA), 2,2',3,3'-biphenyltetracarboxylic dianhydride (i-BPDA), and 3,3',4,4'-biphenyl…