Materials Literature
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The reduced graphene oxide (rGO)/manganese oxides (MnO 2 ) composites are obtained from GO/MnO 2 precursor by the microwaveassisted reducing procedures. Characterization indicates that the phase and morphology transformation have been discovered in GO/MnO 2 composite for the first time, and this transition can be expl…
Mechanical model for plastic relaxation of stresses in metals has been proposed. Our approach based on a characteristic plastic relaxation time, which is assumed as a material parameter. In a number of tasks values of its parameter become similarly high and it leads to dynamic effect appearing even at low strain rates…
This paper presents some of the results of dynamic compression, splitting and direct-tensile tests of gabbro-diabase using two split Hopkinson bar apparatus. The results of laboratory experiments on specimens without and with notch for a wide range of loading parameters are given. Strength and deformation characterist…
Bulk strain solitary waves in nonlinearly elastic thin-walled cylindrical shells with variable geometrical and physical parameters are studied, and equation for the longitudinal strain component with the variable coefficients is derived. A conservative finite difference scheme is proposed, and the results of numerical…
Hexagonally ordered mesoporous silica SBA-15 was successfully synthesized for the first time using natural clay from low-grade potash ores of a salt lake in Qinghai, China, without addition of silica reagents. The influence of changes in processing parameters, such as activation method, hydrothermal conditions, and ca…
The diagnosis and treatment of cancer have been greatly improved with recent developments in bio-nanotechnology, including engineering of multifunctional probes. One of the promising nanoscale tools for cancer imaging is fluorescent quantum dots (QDs), whose small size and unique optical properties allow them to penet…
The purpose of this paper is to investigate the effect of the axial air-gap eccentricity (AAGE) on the electromagnetic characters such as the axial unbalanced magnetic pull (UMP) and the electromagnetic torque (EMT). Firstly, the theoretical model of AAGE is set up, and the formulas of the axial UMP and EMT are deduce…
The exhaust gas of marine diesel engine loses a lot of energy when the exhaust discharged directly. Making good use of diesel engine exhaust gas to generate electricity is helpful to improve the thermal efficiency. Supercritical carbon dioxide cycle is not only with high cycle efficiency, but its devices have advantag…
Effective anti- P. acnes using near infrared light is made possible by perfecting the matching between absorption wavelengths of the loaded photosensitizer and emission wavelengths of the upconverting nanoparticles with high UVA/visible emissions.
This advance is concerned with reactivity improvements of hydrating systems, based on fluidized bed combustion wastes, toward ettringite.
Chitosans with high and low molecular weight were intercalated into organic rectorite to prepare nanocomposites via a microwave irradiation method for 75 min, which was much more efficient than the conventional 48 h heating method.
Here we report on the improved field emission performance of graphene foam (GF) following transient exposure to hydrogen plasma.
Ti-doped lithium vanadium(III) phosphate cathode materials, Li3−2x(V1−xTix)2(PO4)3, were prepared by a solid state reaction. The Ti-doped samples exhibited that the γ-phase is stabilized at room temperature by substituting Ti for V sites at more than x = 0.10. The discharge capacity of the doped samples at a 60 C rate…
Palladium nanoparticles were dispersed on the surface of poly (diallyl dimethyl ammonium chloride) - mesoporous carbon (Pd/PDDA-MC) composite as a catalytic for the environmental hormones nonylphenol (NOP) electrochemical oxidation. The Pd/PDDA-MC was characterized by transmission electron microscope (TEM), scanning e…
Oil Palm Empty Fruit Bunch (OPEFB) was pretreated using Deep Eutectic Solvent (DES) at different parameters to enable a highest yield of sugar. DES is a combination of two or more cheap and safe components to form a eutectic mixture through hydrogen bond interaction, which has a melting point lower than that of each c…
In this research the interaction between oxygen molecules and the outside and inside surfaces of pristine and Ge-doped (4,4) armchair and (6,0) zigzag models of aluminum phosphide nanotubes (AlPNTs) was systematically investigated using density function theory. Structural parameters, adsorption energy, quantum paramet…
Thermally reduced graphene oxide transforms regular paper from hydrophilic to hydrophobic.
Results of testing methodology for calculating two-phase flows based on the method of fluid in the cells (VOF method), and the procedure for CSF accounting of surface tension forces in the microchannel are considered in the work. Mathematical modeling of two-component flow fluid -fluid in the T- microchannel conducted…
Subject of this work is the development of a simple and cost-efficient process for conditioning the surface of forming tools for deep drawing processes in order to minimize friction and wear to a level that dry forming processes without any lubricants will be possible in future. The approach chosen is an oxidative hea…
Palygorskite/polyacrylamide (PAM) composited thickeners were prepared via in-situ polymerization. To optimize the preparation, the dependence of the viscosity, rheological properties and electrolyte resistance of the composited thickeners on the initiator concentrations, sodium hydroxide concentrations and palygorskit…