Materials Literature
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As degradable biomaterials, the higher degradation rate in a physiological environment is the main challenge for the application of magnesium alloys. For this reason, the effect of the rapid solidification processing (RSP) on the corrosion resistance of Mg–13Li–3Al–1Zn–0·5Sr–0·5Ca (Mg–13Li–X) was studied using electro…
Mo nanowalls with high and stable field emission properties have been synthesized by a thermal vapor deposition method, and it shows strong immunity to the in situ oxidizing environment. After pure O2exposure, the degradation of emission current was only 42.31% when the vacuum pressure increased from 2×10-6Pa to 5×10-…
Surface plasmons' (SPs) excitation in Kretschmann-type structure, where a thin metallic layer upon the dielectric prism substituted by a metal-dielectric layered (MDL) structure, is analysed via numerical simulation. Four possible alternations in MDL structure at fixed metallic and dielectric layers' thickness are con…
Abstract : We present a generalized Kohn-Sham (KS) density functional theory (DFT) based effective fragment potential (EFP2-DFT) method for the treatment of solvent effects. Similar to the original Hartree-Fock (HF) based potential with fitted parameters for water (EFP1) and the generalized HF based potential (EFP2-HF…
Purpose: Morphological examination of the efficiency of the influence of various doses of riboflavin-UV induced crosslinking on the state of the corneal stroma in experimental animals.Methods: In the work were used rabbits males breed Chinchilla mass of 1.5-2.0 kg. the experiment was conducted on 20 eyes of 10 animals…
Recent studies indicated that oligomeric β -amyloid (A β) peptides are more neurotoxic to cells or tissues than A β monomers and fibrils even though the underlying mechanism of the A β -induced toxicity is still elusive. The discovery of inhibitors that can prevent cytotoxic oligomeric A β formation has become one of…
0.95(Na0.96-x K x Li0.04)(Nb0.89Sb0.07Ta0.04)O3-0.05KNbO3 (abbreviated as K x NLNST-KN, x = 0.32 − 0.52) lead-free piezoelectric ceramics were prepared by using the conventional solid-state sintering method, and the intentional addition of a pre-calcined KNbO3 powder was used as a sintering aid that might inhibit and…
ZnO: Al film was deposited on TPT substrate with SiO2 buffer layer by RF magnetron sputtering. The obtained film had a hexagonal structure and highly (002) preferred orientation. The lattice constant distortion of the film with buffer layer was decreased and the compressive stress was 0.779GPa. The carrier concentrati…
To study the influence of test transformer capacity on insulator leakage current acquisition results, leakage current acquisition experiments with the clean and dry insulator and the water drops attached insulator were conducted based on the sampling resistor method and the test transformers of different capacities wh…
The effect of austenitizing temperatures and isothermal transformation temperatures on microstructure size and mechanical properties of 70 steel was studied. The experimental results show that the grain size increases with the increasing of austenitizing temperature. And the tensile strength increased with isothermal…
The wear morphology of rake face and flank face of tool is investigated by turning titanium alloy TC4 with CBN solid tool. It has been observed that the main wear form of rake face and flank face of tool is groove wear. The relation between tool flank wear and cutting speeds, feed rate, and cutting depth obtained from…
This work investigates the impact of the exposition to SOFC anode operating conditions on SrTiO3-based compounds, with A-site or B-site substitution: 10 at.% lanthanum or 20 at.% niobium, respectively. Structural and surface stability of the materials after the reaction was examined (post-mortem analysis) using X-ray…
Abstract : An experimental and numerical investigation has been performed to examine material deformation of polycarbonate (PC) from low (quasi-static) to high (dynamic) strain rates. In 2012, a revised physics-based constitutive model for thermoplastics was implemented into several U.S. Department of Energy (DOE) hyd…
TiC thin films were deposited on Si wafer by unbalanced magnetron sputtering (UBMS) system with two targets of graphite and titanium. During the TiC sputtering, the RF power was varied from 100 W to 175 W and the physical and electrical properties of TiC films were investigated. The hardness and rms surface roughness…
The effect of the concentration and activity of metal-containing carbon nanostructures on the modification of polymethyl methacrylate is studied by X-ray photoelectron spectroscopy using an X-ray electron magnetic spectrometer. It is shown that at a nanostructure concentration in the range of 10 −2 –10 −3 % the struct…
Extremely stable, sharp, uniform, low operation voltage and nanometer-order size field emitter arrays (FEAs) have been developed by Transfer Mold fabrication method to realize reliable vacuum nanoelectric devices such as electric propulsion engines and environment-hard applications. Nanometer-order Transfer Mold Mo FE…
Microstructure and texture evolution of an Mg–7Gd–5Y–1Nd–0·5Zr (EW75) extruded alloy after normal rolling (NR) or cross-rolling (CR) up to three passes with 20% reduction per pass were investigated. The results showed that microstructures with finer grains and weaker textures were developed due to the strain state cha…
Alzheimer's disease (AD) is a neurodegenerative disease correlated with aggregation of A β peptide to form insoluble intracellular deposits composed of fibrils in neuronal cells. The growing body of evidence suggests that the plasma membrane of neural cells plays an essential role in the pathophysiology of AD. One of…
Donepezil HCl is an AChE inhibitor used in the treatment of mild to moderate Alzheimer's disease. The objective of the study was to prepare receptor targeted sustained release nanoparticles for donepezil HCl using a biodegradable polymer. The surface modification targets the nanoparticles through receptor-mediated end…
Carbon nanotubes (CNTs) were modified by alkali, and carbon nanotubes epoxy composites samples were prepared by the hot pressing method. Dynamic characteristics of the composites were studied by experiments. The results suggest that carbon nanotubes can hardly enhance the first natural frequency of epoxy composite, bu…