Materials Literature
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The formation of Co magnetic moment in the paramagnetic phase of GdCo2has been studied by means of first principles calculations. The introduction of impurities in the transition metal-rare-earth Laves phases leads to changes in the density of states of the transition metal 3d band. In this paper, we calculate the ele…
In pipe production, it is important to extend the working life of pump and compressor pipe for oil extraction. The use of lined pipe is an effective means of corrosion protection for pump and compressor pipe. However, experience in the production and operation of such pipe indicates that certain processes must be impr…
The Q-factor of the bound optical modes of silicon dioxide spheres with a radius smaller than one micron has been studied in the visible spectrum, showing that local photonic states with a nonzero orbital momentum yield a thin structure in glow spectra, whose maxima positions depend on the diameters of SiO 2 nanospher…
An integrated modeling platform was developed for assessing the potential release rates of ENMs and their environmental distribution. ENM release rates are estimated via life cycle assessment based approach by tracking the target ENM throughout its life cycle from production to release to the environment. Potential EN…
This work presented the diagnosis of several defects types of the rotor bars for squirrel-cage asynchronous machine. The geometry of the model in tow dimensional is presented it consist of two sub-domain: stator and rotor. The Maxwell equations describe the local behavior in time and space of magnetic quantity, there…
The conditions of phase formation in the Tl-Fe-Se system and the crystallization kinetics of amorphous TlFeSe2 films are investigated by electron-diffraction structural analysis and kinematic electronography. It is shown that the crystallization of amorphous TlFeSe2 films is described by the analytical expression of k…
The dielectric relaxation characteristics of polyetheretherketone (PEEK) irradiated with C5+ (70 MeV) ion, have been investigated in the temperature range 60–230° as a function of poling temperature T P (50, 100, 150, and 200°C), poling field E P (200, 300, 400, and 500 kV/cm), and storage time t s (2, 24, 48, and 120…
Low temperature degradation free Zirconia toughened alumina (ZTA) has been developed. It is reported that ZTA has higher mechanical strength compared to alumina due to the stress induced transformation and spontaneously transformation of zirconia phase on some ZTA have been occurred. For achieving the higher reliabili…
The correlation of cyclic hardening/softening behavior of 304 stainless steel (SS) was investigated using nonlinear ultrasonic wave technique. Results reveal that primary hardening leads to the increase of acoustic nonlinearity, while secondary hardening causes the reverse tendency. This distinct phenomenon is governe…
A method for the stepwise determination of the parameters of a symmetrical fine incision in a rod is given for the analysis of bend vibrations. The method has been performed for the Euler-Bernoulli and Timoshenko rod models; the equations that relate the resonance values for an undamaged rod and a rod with a defect ha…
The authors investigated the microstructural and the electrical properties of ZnO based dye-sensitized solar cells (DSSCs) fabricated using a low-temperature-processed(200 °C) dye-sensitized ZnO-nanoparticle thin film and a Pt catalyst depositedon ITO/glass by using RF magnetron sputtering. A hydropolymer containing P…
Graphene oxide was prepared by a modified Hummers method in a Teflon‐lined autoclave and then reduced by two different approaches. Alkaline reduction by sodium hydroxide as the control and synergetic reduction which combined sodium hydroxide and microwave irritation were conducted. The products were characterised by t…
The interaction of a steel cylindrical indenter with an element of a solid-propellant rocket engine (SPRE) is modeled numerically. The SPRE shell material is an orthotropic organic plastic rigidly fixed to the solid propellant. The influence of the indenter geometric and kinetic parameters and of the orientation of el…
Recently, a new class of artificial materials known as metamaterials has emerged to manipulate light at the nanoscale. Contrary to natural materials, the physical properties of optical metamaterials are primarily dependent on the material structures rather than their chemical constituents. The structures forming the b…
nanoCdO/ZnO/PVC composite thin films were prepared by simple solution cast method, using tetra hydrofuran as solvent. nanoCdO/ZnO/PVC composite thin films were irradiated by UV light at the range of 365 nm, 312 nm, and 254 nm. The photo-catalytic activity of CdO/ZnO/PVC was examined by photo-catalytic decolourization…
The current research describes the ring opening polymerization of lactide starting with monomer synthesis up to accelerated polymerization. Different analytical techniques such as DSC, FTIR, GC, GPC, hot-stage optical microscopy, and rheometry were used to study the monomer synthesis/purification and the accelerated p…
The green Hetian nephrite, which has delicate textures, spinach-like green and less cracks, contains three types of aggregates: primary nephrite, placer nephrite and Gobi nephrite. The deposits were located in the south part of the Tarim Basin, Xinjiang, China. In the orebodies of the deposits, primary nephrites occur…
Al2O3 composite ceramics materials used for heat transmission pipeline were prepared by pressureless sintering in air. Calcined bauxite, talc and commercial alumina powder were used as the main raw materials, partially stabilized zirconia was also added to improve the thermal shock resistance of the samples. The effec…
Combining a yellow-emitting organic material with a blue-emitting inorganic light-emitting device (LED) provides a hybrid white-light LED. This approach, demonstrated by R. W. Martin, P. J. Skabara, and co-workers on page 7290, couples very efficient blue emission with the flexibility, fast modulation speed, and cost…
Luminescent composites based on SiO 2 matrices synthesized using the sol-gel method and organic scintillators PPO and o-POPOP are produced, and their optical, luminescent, and scintillation characteristics are studied. It is shown that these composites generate an intense photoluminescence signal, possess a nanosecond…