Materials Literature
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Ni0.6-xZn0.4CoxFe2O4 (x = 0, 0.033, 0.264) nanoparticles were synthesized by sol-gel method and annealed at 900°C. Structural properties of all prepared samples were examined with X-ray diffraction (XRD). The partial formation of hematite (α-Fe2O3) secondary phase with spinel phase cubic structure of undoped and cobal…
In the process of constructional steel products operation in conditions of high temperatures, chemical elements segregation occurs, which leads to the surface characteristics changing and influences their operation period. This paper is aimed in developing the model of mass transfer and redistribution of small-sized a…
Testing of absorbed impact energy according to the Charpy method is carried out to determine the behaviour of a material under the impact load. Instrumented Charpy method allows getting the force displacement curve through the entire test, That curve can be related to force-displacement curve which is obtained by the…
Carbon-carbon (C/C) nanocomposites based on nanodispersed carbon black and pyrolytic carbon obtained with matrix synthesis are investigated. The work presents the results of electrochemical tests on prototype samples of C/C nanocomposites as the components of electrochemical capacitors electrodes with the solutions of…
This paper presents an experimental investigation on the mechanical properties of cotton fabric/polyester composites. Plied yarns (4-plies) of known count were woven and knitted into fabrics of different architectures. The cotton fabrics were subjected to chemical modifications using sodium hydroxide and its influence…
Magnesium base alloys have reached an important development as structural materials the last years due to its good strength/weight relationship. On the other hand, superplastic forming has also acquired a technological interest in the last time, due to the possibility of achieving complex geometries in only one formin…
Abstract Computational thermodynamics and CALPHAD modeling prove useful for selecting and developing new magnesium alloys. This article summarizes an ongoing effort to establish a scientific foundation of computational thermodynamics and kinetics of magnesium alloys to achieve accelerated design and optimization of th…
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Number of dicationic chlorins with additional hydrophobic (alkyl) and hydrophilic (polyther) groups were synthesized on the basis of methyl pheophorbide a. Novel dicationic amphiphilic chlorins with different hydrophobic part size were obtained by alkylation of tertiary amino groups of twice aminomethylated chlorin e…
Fine particles of gamma ferric oxide is prepared by the sol-gel method and characterized by taking XRD. Natural rubber based gamma ferric oxide composites (RFCs) with different ferrite loading are prepared by incorporating ferric oxide into the matrix according to a specific recipe. Cure characteristics and mechanical…
In the article the main problems and peculiarities of innovation activity of enterprises in the restaurant industry; distinguishes functional level innovation cycles in certain types of business restaurant business engaged in providing food services to foreign tourists.
We outline a general method of constructing finite-range cloaking potentials which render a given finite-range real or complex potential, v(x), unidirectionally reflectionless or invisible at a wave number, k(0), of our choice. We give explicit analytic expressions for three classes of cloaking potentials which achiev…
硬X線光電子分光（hard X-ray photoemission spectroscopy, HAXPES）は従来の光電子分光に比べて数倍以上大きい分析深さを有する比較的新しい実験手法で，産業応用研究における新しい分析ツールとして近年注目を浴びている．本稿では，まず始めにHAXPESの原理と特徴について，いくつかの利用例とともに概説する．次にSPring-8 BL46XUにて我々が運用している，異なるタイプの電子分光器（VG Scienta R4000-10 keVとFocus HV-CSA 300/15）を装備する，2台の硬X線光電子分光装置について詳細に説明する．SPring-8の利用制度についても簡単に述べる．
Based on the literature review, the authors made a justified choice of ceramic materials with a low dielectric constant and dielectric loss tangent. The composition and process parameters (burning temperature -1550 C, burning duration -5 hours) of producing of celsian and Sr-anorthite ceramics with low dielectric prop…
A gradient Si steel sheet, which has high Si content in the surface layer and low Si content in the center of the thickness, shows extremely low iron loss in the high frequency range. In this paper, the magnetic properties of gradient Si steel sheets under compressive stress were investigated. In a 3.5%Si steel sheet,…
The influence of Co and Cu doping on Ni-Mn-Ga alloy is investigated using the first-principles exact muffin-tin orbital method in combination with the coherent-potential approximation. The energy difference between the austenite (A) and the nonmodulated (NM) martensite Δ E A-NM depends linearly on the Cu concentration…
Recent development in microwave-assisted processing of biomass materials has significantly created a need for fundamental study to understand the dielectric properties of these biomass feedstock, which could give further insight about interaction between microwave energy and biomass. In the present study, dielectric p…
Comparative structural and vibrational investigations in two different forms of the L-Tyrosine (L-TYR) have been carried out using Raman and IR spectral and DFT methods. For the optimized structures of the most stable conformers the vibrational assignments of the experimental IR and Raman bands have been proposed usin…
Electroplastic graphene has been recently attracting considerable interest due to its intrinsic electrical, mechanical and thermal properties. This review has been presented the recent progress in preparation, application and bibliometric data of graphene published over twenty-eight years from 1986 to 2014. Recent res…
An increase in bioavailable tin in the environment could result in bioaccumulation thereof in agricultural crops, and therefore, have adverse health consequences on humans that eat these crops. The aims of the current study were thus to assess the uptake of Sn by spinach plants, and the subsequent effects this will ha…