Materials Literature
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Relevant data indicates that,for an engine like 3105ZD whose rated power is only 33.5 kW,the Indian limits is even more strict than that of European STAGE ⅢA standard.To improve our engine to meet the level,this subject proceeded contrasting and matching experiment on the nozzle protrusion,fuel supply advance angle,no…
The research of nano-drug-loaded carrier has made fast progress as potential drug delivery systems.Nano-drugs possess several advantages including delivering drug targeting,releasing drug progressively,prolonging administering time,decreasing the effect of toxicity and so on.So as a new drug carrier,nanoparticles appe…
We investigated the corona inception voltage and corona current characteristics of conductor when the surface of conductor was adhered with artificial contaminations of different densities and carbon powder respectively by use of an corona cage,and predicted corona inception voltage characteristics of ±800 kV UHV DC p…
In this paper,several kinds of manganites have been investigated in details by ESR.The magnetic properties of Fe doped La0.67Ca0.33MnO3(x=0.0,0.04) single crystal has been studied,especially the ones near the ferromagnetic to paramagnetic transition temperature which is related with the CMR effect.It is found that the…
R-(+)limonene is available and cheap,and the selective oxidation of R(+)limonene has attracted attention as a promising process for the production of compounds with a higher market value,one of the these processes,described in the recent literature,is submission of R-(+)limonene to an oxidation reaction catalyzed by n…
使用原子与双原子分子相互作用比较准确的Tang-Toennies势模型,通过密耦近似（Close-Coupling）方法计算了He原子与H2分子在不同碰撞能量（E=0.2,1.2,2.2 eV）时散射分波截面,首次对He-H2体系较高碰撞能量（大于2.0 eV）时的碰撞截面进行了研究,对计算结果进行了讨论,总结了该碰撞体系的分波散射截面在弹性散射00-00和非弹性散射00-04的变化规律.
WO_3 is an excellent gasochromic material,the study of gasochromic properties of WO_3 thin films contributes to developing more potential controllable electrochromic device.The research progress of WO_3 gasochromic is introduced,the influence of annealing and doping modification on the gasochromic are reviewed,and two…
Methyl stearate was synthesized by esterification of stearic acid with methyl alcohol using p-toluene sulfonic acid as a catalyst.The results indicated that p-toluene sulfonic acid possessed high catalytic activity for the esterification reaction.The synthetic conditions were optimized,including the reaction time,the…
ZnO thin films were deposited on Al2O3(001)substrates by megnetron sputtering method at 500 ℃,550 ℃,600 ℃ and 650 ℃,respectively.The as-deposited ZnO films samples were annealed at 800 ℃ and 1000 ℃.The structure,electrical and optical properties of the ZnO thin films were investigated by X-ray diffraction(XRD),Hall an…
Iron and steel industry emits quite large quantities of Green House Gas(GHG).In order to achieve Chinese government's target on GHG emission reduction,the iron and steel industry in China must reduce the GHG emissions of their products.Besides improve technologies,recycling industrial waste of iron and steel industry…
Taking the AEII-40.5 gas-insulated switchgear as an example,this paper analyzes the gas-leakage of the grounding-through-wall insulator of gas room,and finds that the elastic deformation of the gas room during gassing and pumping processes imposes an abnormal force on the insulator,resulting in its damage and leakage.…
The application of indentifying constitution played a necessary part in the process of TCM differential treatment.The author has described the source,types as well as the achievements in practice of TCM constitution theory widely recognized currently.
This paper investigate the La0.67Sr0.33Mn1-xFexO3(0≤x≤0.2)system.The ceramic samples are prepared by the solid state reaction method.The influence of Fe doping on electric properties of La0.67Sr0.33MnO3 is studied by X-ray diffraction method,Laser Raman spectra,ρ-T measurement.The results show that all the samples hav…
In this paper,the finite element method of Picard iterative format was applied for analyzing extrudate swell of viscoelastic fluid flows in three-dimension using Wager integral constitutive equations. During each iteration,the updated streamline of boundaries was generated according to boundary condition of velocity.…
In order to develop a flexible lamellar surfacing material for repairing the worn parts and thin tube,the organic silicon sealant,polyvinyl alcohol,epoxy resin and sodium silicate were selected as the binder and were mixed with the Ni60H hard material to fabricate the lamellar surfacing material. In addition,the WC po…
A series of inorganic/organic nanocomposites were prepared by blending cage-like octahexenyl-polyhedral oligomeric silsesquioxane(Oh-POSS) with PMMA in THF solvent.FTIR and NMR were employed to characterize the structures of the nanocomposites.SEM images showed that the sample films were smooth and no POSS aggregation…
To study the effects of particle motion mechanism and size distribution on fractal dimension of dust cake structure,the process of aerosol particles deposition in fibrous filtration medium was simulated on basis of Diffusion-Limited Aggregation(DLA)improving model.In this study,effects of inertia movement and diffusio…
Superabsorbent resin is widely used as hygiene absorbent material,but it is not easy to be processed because it is in the form of powder or particle.Hence superabsorbent fiber is a promising material in the replacement of SAP.In this paper,based on the analysis of the properties of SAP and SAF in the application of hy…
Nine welding technologies were employed to weld sheets of TC4 titanium alloy of 2 mm thick.The properties of the joint were studied by analyzing and comparing the microstructure of weld and HAZ,mechanical properties of the joint and fractographs of tensile specimen.The obtained results show that the appearance of weld…
In this paper,the addition of neutral buffer salt is used to improve the degradation resistance of polylatic acid(PLA) material.The accelerating hydrolysis experiment of 95 ℃ water bath,50 ℃ dry and wet air degradation experiments show that the addition of a neutral buffer salt of pH7,PLA film can obtain increased ten…