Materials Literature
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With the development of multi-directional forging technology, heavy multi-directional forging press has been widely used in manufacturing industry. However, there is a contradiction between the independence of structure and the independence of mechanics, which becomes a bottleneck and limits the development of heavy m…
To generate laser ablation plasma, a pulse laser is focused onto a solid target making a crater on the surface. However, not all the evaporated material is efficiently converted to hot plasma. Some portion of the evaporated material could be turned to low temperature plasma or just vapor. To investigate the mechanism,…
Fluid Jet Polishing (FJP) is a promising ultra-precision machining technology which shows great potential with regard to the application value in the generation of freeform surfaces with sub-micrometre form accuracy and nanometric surface finish. The polishing tool influence function (TIF), which is affected by variou…
Chemical constituents in extract of Scrophulariae Radix and their metabolites in rat plasma after oral administration were identified by HPLC-LTQ-Orbitrap. Samples were separated by a Venusil MP C₁₈ column using a binary gradient elution. The information on the total ion chromatogram, the extraction chromatogram and t…
The demand for fuels as raw materials is increasing disproportionally, thus producing huge environmental impacts, as is the case of carbon dioxide emissions into the atmosphere. Nowadays, society is facing several challenges, including the implementation of new technologies that are able to meet energy needs and promo…
By decoupling thermal equilibrium conditions in shock loaded porous materials, two regimes resulting in two-zone Hugoniot are revealed, specifically, a stable low-pressure regime characterized by achieving interphase temperature equilibrium and a metastable high-pressure regime. Porous materials, represented as two-ph…
The nonlinear effects characterization by using the Z-Scan transmission technique in many materials has generated great in forest according to the technological necessities. The majority part of the nonlinear effects can be described by the classic electromagnetic theory, with the electrical susceptibility in the cons…
The overall aim of present investigation is to partially replace the existing chemical fertilizer by developing polymer coated nanocomposites bio-organic fertilizer. Development of nanocomposite fertilizer influences on plant growth promoting activities of nanocomposite fertilizer, nanocomposites fertilizers are analy…
In this study, device modeling and simulation are conducted to explain the effects of each layer thickness and temperature on the performance of ZnO/CdS/CIS thin film solar cells. Also, the thicknesses of the CIS and CdS absorber layers are considered in this work theoretically and experimentally. The calculations of…
Abstract Stimulated emission and lasing in Cu(In,Ga)Se 2 thin films have been demonstrated at a temperature of 20 K using excitation by a nanosecond pulsed N 2 laser with power densities in the range from 2 to 100 kW cm −2 . Sharp narrowing of the photoluminescence band, superlinear dependence of its intensity on exci…
The results of experiments on the impact of high power electromagnetic pulses (EMP) on the metal alloy melts are discussed. A generator with the following pulse parameters: the amplitude of 10 kV, the duration of 1 ns, the leading edge of 0.1 ns, repetition rate of 1 kHz was used for pulse electric treatment of metal…
The influence of hydrogen sorption-desorption cycles on defect structure of Zr-1Nb alloy was investigated. Specimens were hydroganated from gas atmosphere at temperature 500 °C and pressure 2 atm up to the hydrogen concentration equal to 0.05 wt.% for each cycle. The hydrogen concentration during saturation was determ…
Influence of electron beam irradiation on the morphology and contact angle of polypropylene was investigated. Electron beam processing was carried out at 8 – 10 kV accelerating voltage and a pressure of 5 – 10 Pa. Beam current density was up to 4.5 A/cm2, and the pulse duration - from 150 to 300 μs. The morphology of…
The paper presents the software and data transfer method between ProCAST and Deform-3D, which allow to take into account the geometry, temperature, residual stresses and microstructure of semi-finished product in the “casting – forming” processes.
Abstract Polymer‐derived and micro‐cracked silicon carbonitride (SiCN) materials have been successfully synthesized via pyrolyzing from poly(diphenylcarbondiimide) and post‐treating with different molar concentration of sodium hydroxide (NaOH) aqueous solution (0.2‐5.0 mol L −1 ). The as‐prepared SiCN materials have b…
Abstract. Excellent combination of mechanical properties makes bainitic steels very attractive for commercial application. The most potential benefit of bainitic steels is found in the lightweight design of car bodies. The chemical composition, productions process and the austenite state control the properties of thos…
Thin solid layers that are formed upon heating of the gaseous trimethylbismuth–isopropylselenide–hydrogen system on the (0001) Al 2 O 3 and singular and vicinal (100) GaAs surfaces are studied. The conditions for deposition of metal Bi and phases of Bi 4 Se 3 , BiSe, and topological insulator Bi 2 Se 3 using the MOCVD…
Results from structural and morphological studies, measurements of the sheet electrical resistance, and estimating resistivity ρ m of a graphite-like conducting surface layer formed upon high-dose irradiation of the (111) face of a synthetic diamond with Ar + ions at an energy of 30 keV and a target temperature of 400…
The reactions of iron(III) dibutyl and di-iso-butyl dithiocarbamates [Fe(S2CNR2)3] (R = C4H9, iso-C4H9) with anions [AuCl4]– in 2 M HCl are studied. The result of heterogeneous reactions of gold(III) chemisorption binding from a solution is the formation of gold(III)–iron(III) heteropolynuclear complexes of the ionic…
The paper is devoted to some aspects of reliability of Instrumentation and Control Systems (I&Cs) for Nuclear Power Plants (NPP). A few challenges regarding regulation, assessment and assure of NPP I&Cs reliability and safety are analyzed considering: the most known accidents in NPPs including the last of them at the…