Materials Literature
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Calotropis procera root is used in traditional medical practice for the treatment of various ailments. The possible hepatoprotective and nephroprotective activities of the ethanolic extract of C. procera root in female rats were investigated. Carbon tetrachloride (CCl 4) was used to induce hepatotoxicity and nephrotox…
This paper reports that according to the principle of EMW-absorption, thermal insulating EMW-absorber for building was designed and theoretically simulated of the λ/4 type. The EMW-absorption properties of composites in the band of 2-4 GHz were examined, A maximum absorption of-20 dB at 3 GHz and 80% of bandwidth belo…
Abstract The paper describes a new approach to characterize metallic materials by a novel instrumented notch impact test for samples with small specimen size. A piezo‐electric sensor mounted on the pendulum hammer provides force information during the fracture process. By numerical integration of the signal the absorb…
Er3+:ZnS quantum dots(QDs) were synthesized by hydrothermal process. The structure, morphology and luminescence properties were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM) and photoluminescence (PL) spectroscopy. It was found that the Er3+:ZnS QDs are zinc blende structure w…
Successful pharmaceutical development of a drug molecule depends not only on its potency and selectivity but also on its solid state. Thus the properties of active pharmaceutical ingrdient depend on the identity of its constituents as well as on their arrangement. It is quite common for a drug molecule to exist in mor…
The crystal structures and electrical properties of epitaxial BiFe0.9Co0.1O3 thin films grown by pulsed laser deposition on SrRuO3/SrTiO3(001) substrates under different oxygen pressures were investigated. The unit cell volume of BiFe0.9Co0.1O3 thin films monotonically decreases with increasing oxygen pressure from 10…
Composite systems used for increasing the load bearing capacity of timber structural elements are of special interest for engineers, basically because of their beneficial weight/strength ratio. By creating a hybrid cross section composed of wood and interposed GFRP lamellae, the improvement of wood limited elastic pro…
In order to investigate the role of TiO 2 during plasma treatment, the degradation of the dye AO7 has been studied by gliding arc discharge in the presence of a TiO 2 catalyst (CGAD). The results revealed that the adsorption of the dye on TiO 2 is a physical adsorption in accordance with Langmuir isotherm, with a cons…
Mechanical grinding of steel slag is investigated and characterized using X-ray diffraction and size analyzer. The results indicate that the obtained ultrafine powders contain active mineral phases suitable for ordinary Portland cement (OPC)-Ca(OH) 2 , 2CaO·SiO 2 , 2CaO·Fe 2 O 3 . We have proved and first pointed out…
With the improvement of living standards, people are increasingly more demands on the dress. Study on the clothing comfort more and more. Clothing pressure comfort is an important aspect of clothing comfort. Dynamic clothing pressure is the interaction between human body and clothing. It is related to clothing styles,…
Polypyrrole coating doped with dodecylsulfate anions was electrodeposited by cyclic voltammetry and constant current technique on type 304 stainless steel used for bipolar plates of a proton-exchange membrane fuel cell from a basic solution of 0.2M pyrrole monomer solution containing dodecylsulfate sodium as supportin…
The characteristics of the woven fabric laminates structure is described. The steps and method of building the woven fabric laminates structure finite element model in MSC Patran is provided. The accuracy of this method is verified by a group of finite element calculation and experimental data.
Microelectronic devices consist of a number of corrosion sensitive metallic combinations such as gold–aluminium and zinc coated steel. Polyamides (PAs) are well known packaging materials for microelectronic devices such as integrated circuits. Iodide based stabilisers are used in PA, and degassing of the iodine from t…
A series of PLA blends were prepared by solution co-precipitation of polylactide (PLA), polyethylene glycol (PEG) and different crystallization nucleating agents. The crystallization behavior of blends was investigated by differential scanning calorimeter (DSC) and X-ray diffraction (XRD). The results showed that the…
Scientists at the Empa research institute in Switzerland have produced organic phosphorus-containing compounds that they claim could replace conventional halogenated flame retardants in polymeric foams.
In this study, a micro-force tensile testing machine (MTS Tytron 250) was applied to test the polyimide samples coated with different thicknesses of copper (500–1500 nm). The experiments using different strain rates (1.6 × 10−4 to 1.6 × 10−2 s−1) were conducted to the test vehicles. The results showed that the stress…
The manuscript describes pyrolysis of copolymers based on selected alkyl methacrylates containing C1-C8 alkyl side chain at temperatures between 250 °C and 400 °C which was studied using pyrolysis-gas chromatography. The kind and composition of thermal degradation products gave practical information about the mechanis…
The flame-retardant mechanisms of aluminium hydroxide (ATH) and magnesium hydroxide (MH) that used as typical inorganic fire-retardant were illustrated. The preparation methods of the fire-retardants are reviewed. And the modification approaches and future development direction of the fire-retardants were also discuss…
This paper describes an approximate 2D method for computing the magnetizing zero-sequence impedances in 3-phase core-type transformers without tank. These transformers do not have axial symmetry in their geometry, but a 2D model with axial symmetry is applied in order to obtain approximate results. The 3D models requi…
The rhenium- and ruthenium-containing catalysts are active in the oxidation of CH x and CO and in the reduction of NO x . Comparative testing of catalyst samples under laboratory conditions and on an engine stand demonstrated that these catalysts outperform the known commercial catalysts in the neutralization of exhau…