Materials Literature
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Novel cutting tools that had either microscale or nanoscale textures on their surfaces were developed in this study. Texturing microscale or nanoscale features on a solid surface allowed us to control the tribological characteristics of the tool. In this report, diamond like carbon (DLC) coated tools with the texture…
We developed an aqueous solution system to deposit and control the nucleation and crystal growth of ZnO. Ethylenediamine was used to promote deposition of ZnO from zinc acetate solution. Crystalline ZnO particles or particulate films were successfully fabricated at 60 degrees C. The morphology of ZnO particles was fur…
РоссияВ работе подробно рассмотрены проблемы использования критерия инкубационного времени в качестве критерия хрупкого разрушения в конечно-элементных расчетах.Приведен ряд примеров численных
Molecular sieve was utilized as a carrier of active metals copper and manganese to determine the effectiveness of removing toluen using a catalyst incineration. Catalysts with various metal ratios and weight loadings were produced by sol-gel to treat toluene. This investigation selected the most effective catalyst, ba…
Water-soluble biocompatible and monodisperse ZnS, CdS, CdSe quantum dots (QDs) were synthesized using natural chitosan derivatives as stabilizers. TEM, XRD, SAED and UV-vis confirmed the formation of nanoparticles with average size of 3-5 nm, and the resulted ZnS, CdS nanocrystals were shown to be of cubic and blended…
The viscoelastic modulus of hot-mix asphalt (HMA) such as the complex modulus, E*, is an essential material parameter for better paving mixture design and asphalt pavement design. Under certain circumstances, it is desirable that a reasonable modulus value of certain HMA mixtures be estimated for this purpose. Empiric…
The effects of wood species, particle size of wood flours and coupling treatment on the mechanical properties of wood plastic composites (WPC) are investigated in this study. Chemical components of wood flour from 3 different wood species were analyzed by the chemical analysis. Wood flours of 4060 mesh and 80100 mesh…
-doped potassium niobate polycrystalline powder phosphors for , 0.03, 0.05, and 0.07 mol were prepared by the conventional solid-state reaction method and were characterized by X-ray diffraction (XRD), field-emission-scanning electron microscopy, transmission electron microscopy, and photoluminescence measurements. Th…
Inverse transient analysis, developed by several researchers in recent years as a promising and low-cost leak detection technique, has been successfully demonstrated under laboratory settings. However, the feasibility and technical limitations of this technique under actual field conditions has yet to be definitely es…
The influence of void configuration on void coalescence in single crystal copper under shock loading along ［100］ direction has been investigated with molecular dynamics （MD） simulation. The results reveal that the voids collapse and grow by means of emission of shear dislocation loops. In the tension stage, the voids…
Knowledge of the physical parameters and optical constants of sols and sol–gel materials is important in view of their possible applications. In this work, silica and silica-titania sols were examined. Gelation time, surface tension, refractive index and optical transmittance were measured. The sol–gel materials were…
Nb doping is proved to be the most promising way of enhancing the oxidation resistance of TiAl alloys， yet the intrinsic mechanism is still unclear. To understand the effect of Nb doping, a first principles study of several point defects in γ-TiAl during oxidation is performed. Besides the determination of the stable…
We have investigated the phase transition, the structural and the thermodynamic properties of AlAs in three crystallographic structures, i.e. B3 （zinc blende）, B1 （rocksalt）, and B8 （nickel arsenide）, at high pressures by using the full-potential linearized muffin-tin orbital scheme in the framework of density functio…
(CCTO), for resistance random access memory (RRAM) application, was prepared by the sol–gel method. Our preliminary study indicates that CCTO possesses the resistive switching behaviors of RRAM. In this work, the resistance switching characteristics of CCTO films were investigated. The impedance spectroscopy was appli…
Abstract: The present study aims to investigate the anti-inflammatory properties of the fruits of Allanblackia floribunda Oliv. [Guttiferae]. The fruits are traditionally used in the treatment of anti-inflammatory conditions. The methanolic extracts of the fruits (100-400 mg/kg, p.o) inhibited carrageenan induced paw…
The aim of this study was to develop two new variants of porous composites based on collagen-chondroitin sulfate-hydroxyapatite (COL-CS-HA) mixtures. Electron microscopy examination showed that the composites had a microporous structure, with HA deposits non- homogeneously disposed on COL fibrous bundles. Their porosi…
The factors influencing fabric pilling include the fibre properties, yarn properties, fabric structure and wear condition. As an expensive textile material, cashmere fibre exhibits a small diameter, short length and smooth surface. The pilling of cashmere knitted fabric has attracted the attention of consumers, manufa…
The objective of the present study was to develop a hydro dynamically balanced system of metformin as a single unit floating tablet. Various grades of low‐density polymers were used for the formulation of this system. They were prepared by physical blending of metformin and the polymers in varying ratios. The formulat…
Europium doped bunches of ZnO nanowires have been synthesized by co-precipitation method. The synthesized nanowires are of diameter 60-100 nm and length upto several microns. The absorption spectra and photoluminescence spectrum of europium doped bunches of ZnO nanowires are studied. The effect of annealing temperatur…
Molten Salt Reactors have seen a marked resurgence of interest over the past decade, highlighted by their inclusion as one of six Generation IV reactor types. The most active development period however was between the late 1950s and early 1970s at Oak Ridge National Laboratories (ORNL) and any new re-examination of th…