Materials Literature
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A very sharp wavelength response and significant electroluminescence and high internal quantum efficiency makes rare earth complexes promising materials to produce OLED devices with high performance. In this work a three layer device has been investigated to study the influence of the mass concentration of an europium…
During surveys of green algal diversity, we encountered a Codium species with carpet-like thalli from several sites on Jeju Island. To confirm the taxonomic identity of these specimens, we studied the morphological features and obtained rbcL gene sequences. The morphological and sequence data indicated that the carpet…
PURPOSE: To evaluate three methods to isolate rats MSCs and to analyze the potential of a castor oil polyurethane base membrane as a scaffold for MSCs. METHODS: Four male Wistar rats, aged 20-30 days were used. Bone marrow aspirates from femur and tibia were harvested using DMEM high glucose and heparin. The cell cult…
This paper presents the comparative evaluation of the performance of two control techniques to determine the reference current for a three phase shunt active power filter (APF) in order to improve the power quality and compensate reactive power required by nonlinear load. The first one is based on the use of classic P…
The oxidation of organic compounds with carbon-carbon double bond with using of molecular oxygen under atmospheric pressure in the presence of new polyaniline supported catalyst 1 and 2 has been studied. These catalysts turned out to be efficient and selective for oxidation of unsaturated organic compounds as well as…
We have studied hydrogen impurities and related structural properties in state-of-the-art wurtzite InN films with polar, nonpolar, and semipolar surface orientations. The effects of thermal annealing and chemical treatment on the incorporation and stability of H are also discussed. The near-surface and bulk hydrogen c…
This work deals with compensation algorithm schemes used in single-phase Unified Power Quality Conditioner (UPQC), allowing harmonic suppression and sag/swell compensation of the input voltage. In addition, reactive power compensation and harmonic suppression of the input current are also carried out, resulting in an…
Used as scaffolds to 3D cultures, biomaterials studied in tissue engineering can be derived from natural or synthetic sources and may belong to one of three classes: metals, ceramics, or polymers. Once transplanted, biomaterials can be reabsorbed in vivo and replaced by new tissue
Carbon nanomaterials, such as carbon nanotubes (CNTs), graphene sheets and so forth, have attracted much attention for not only scientific interest but also various application expectations. For example, various applications of CNTs, such as field emitter, transistor channel, and so forth, have been proposed, because…
Thermodynamic Study of Grinding-Induced Loratadine Inclusion Complex Formation Using Thermal Analysis and Curve-Fitted FTIR Determination
This chapter contains sections titled: The Gabbro-Eclogite Transformation Mineralogical Zoning and Stability Fields in the Outer Mantle The Transition Zone Summary
Abstract Phosphorus‐doped MgxZn1−xO thin films with various Mg content (0.07 ≤ x ≤ 0.28) and up to 0.7 at% P were grown on ZnO(000‐1) single crystals by pulsed laser deposition (PLD). In dependence on the dopant concentrations, tensile or compressively strained, in‐plane lattice matched, i.e., pseudomorphic growth of…
The deactivation rate equation for a commercial Cu/ZnO water–gas shift catalyst was derived on the basis of a high-order power-law equation for sintering rate. The parameters for the equation were then calculated from experimental data obtained over a short period during which the deactivation conditions were severe (…
This paper presents an investigative study into minimising the cogging torque of a novel three phase surface mounted PM brushless DC motor. The motor is novel because it has a non-integer stator-rotor pole ratio and also asymmetric stator pole arcs. In the paper, the results of the work demonstrate how the optimum sta…
The predicted half-metallicity of Co2FeSi in combination with its high Curie temperature of above 980 K makes this Heusler alloy interesting for spinelectronics. Thin Co2FeSi films are grown by molecular-beam epitaxy on GaAs (001) with a close lattice match. We present a study of point-contact measurements on differen…
compensation. Due to the widespread use of non-sinusoidal, non-periodic loads and the existence of distorted voltages, many definitions of non-active power for non-sinusoidal and non-periodic waveforms have been formulated. This paper investigates the major similarities and discrepancies of three non-active power theo…
MgAl2O4 (MA) nano powder was synthesized via molten salt technique, by heating stochiometric composition of MgO and nano boehmite. The reactant and potassium chloride, as the reaction media, were fired at 800-1000 °C at different dwell times (0.5-5 h) in the ambient atmosphere. After washing and filtration, the spinel…
This article discusses the fundamentals of motor protection principle. A brief overview of the existing protection philosophy for asynchronous motors is reviewed with a special consideration of thermal protection of motors. Because large synchronous motors are used in the cement industry, a review of additional functi…
Due to the electrical, sensory and optical properties the interest on ZnO-based devices including thin-film transistors (TFT) aroused. The main concerns, when using ZnO nanoparticles (NP-ZnO) in TFT, are the low charge carrier mobility and the hysteresis when poly(4-vinylphenol) (PVP) is used as gate dielectric. It is…
Structural and magnetic measurements were done on polycrystalline manganite, Pr0.5Eu0.5MnO3. The Rietveld refinement of the x-ray powder diffraction pattern at room temperature suggests considerable Jahn-Teller distortion due to ionic size mismatch of the isovalent ions. Dc and ac magnetometry suggest a disordered ant…