Materials Literature
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Orange red emitting phosphor(Sr1-xBax)3-ySiO5∶y Eu2+ was synthesized via high temperature solid-state reaction under a reducing atmosphere and characterized by X-ray diffraction(XRD) and fluorescence spectrophotometer.The results indicate that the synthesized phosphor has the same crystal structure type with Sr3SiO5.T…
Mechanical properties of four kinds of wood-based panels,namely plywood(PW),particleboard(PB),medium density fiberboard(MDF) and oriented strand board(OSB) were studied.Five tests,including plane bending,lateral bending,panel shear,planar shear and concentrated load,were performed.The results showed that loading modes…
The contained gas purification by vertical bio-trickling filter was performed with toluene as target pollutant, ceramists as packing material and the efficient composite bacteria as degrading bacteria, the efficient assorted bacteria are obtained from earlier experiments. The start-up process of the bio-trickling filt…
The crankshaft of a compressor was treated by combined electrochemical and mechanical polishing for improving its roughness.The optimized process conditions by single factor experiment and orthogonal test are as follows: for pulse electropolishing,output frequency 1 000 Hz,duty cycle of square wave 50%,mass fraction o…
A series high-solid-content polyurethane-silicone compound dispersions were prepared by self-emulsification,which were modified with γ-aminopropyl methyldimethyoxysilane(KH-550)as a blocking agent,the self-made silicon polyether(PES)and propylene oxide glycol(PPG)as soft segments,toluene diisocyanate(TDI)as hard segme…
Alkaline earth metal oxides(MO = MgO,CaO,SrO and BaO) doped CeO2 catalysts were prepared by the impregnation method,the structure and surface properties were characterized by using X-ray diffraction,H2 temperature programmed reduction and CO2 temperature programmed desorption,and their catalytic performances of select…
A sawtooth wave driving power for giant magnetostrictive impact drive mechanism(IDM) is given.The proposed current source power are cascaded Buck converter.To generate the step-up and step-down sawtooth signals,sawtooth wave pulse width modulation(PWM) are used to control the circuit.The operation principle is shown,a…
The interferometer is an indispensable instrument in the modern optic manufacture and testing,whose testing accuracy limits the manufacture accuracy of the optic.In theory,the point diffraction interferometer,which use the wave-front diffracted by a pinhole as reference wave,can be applied in the sub-nanometer optical…
【Objective】The objective of this study is to research the preparation prescription of KillerRed protein liposome(L-KRP) and its physicochemical properties and bioactivity for optimizing the bioefficacy of KRP.【Method】 L-KRP was prepared by reverse-phase evaporation method,encapsulation efficiency of L-KRP was determin…
The composite of ordered mesoporous carbon (CMK-3) and Li 4 Ti 5 O 12 (Li4Ti5O12 /CMK-3) was prepared by the wet impregnation of CMK-3 with LiNO 3 and Ti(OC4H9) 4 solution followed by calcination. Its morphology and structure were examined using scanning electron microscopy (SEM), transmission electron microscopy (TEM…
Based on thermal cycling characteristics of sub-regions of heat affected zone,the thermal cycles with different peak temperaure of heat affected zone of Q690 high strength steel under single bead welding condition were simulated by thermomechanical simulator.The microstructure and fractograph were characterized by SEM…
The property of package material is one of the most important factors for the IC line electronic chemical quality.The hydrochloric acid is one of basic electronic chemicals,which with extremely high complexation property and permeability property.So compare to other electronic chemicals,its package material request is…
The formation of high melting point impurities occur during the synthesis of ZnGeP2 using two-zone vapor transport method,thus resulting in the reduction of the purity of polycrystals.Synthetic products at several important temperatures in the synthesis process of ZnGeP2 polycrystals were characterized by XRD and EDS…
The influence of density and thickness of PMI foam on its high-frequency dielectric properties and its sandwich structures with carbon fiber or glass fiber at 10GHz was studied.The results indicate that the thickness of the PMI foam has little effect on the high-frequency dielectric properties.The high-frequency diele…
The abrasive resistance,which can be evaluated by abrasive jet test method,is an important quality index reflecting the erosion or wear resistance of aluminum alloy anodic oxide coating.In this article,the abrasive resistance of aluminum alloy anodic oxide coating sample was measured by an abrasive jet test apparatus.…
The complexation between Ag+ and PAMAM dendrimers with tri(2-aminoethyl)amine as a core molecule were studied by UV-visible spectrophotometry.The effects of the molar ratio of Ag+ to PAMAM,the pH value of the solution and the reaction time on the complexation were discussed.The results showed that the absorbency incre…
The color value of flos caryophylata pigment was determined, and the flos caryophylata pigment was applied to black color dyeing of silk fabric by different methods(pre-mordanting, meta-mordanting and post-mordanting) with aluminium potassium sulfate, ferrous sulfate, ferric sulfate and zinc chloride as mordant agents…
Intraspecific hybridization was investigated using two stocks of the Pacific oyster, China population(C)and Japan population(J). The fertilization rate, larval survival rate, growth and heterosis were compared between two reciprocal hybrid crosses(C♀×J♂, CJ and J♀×C♂, JC) and two parental groups(C♀×C♂, CC and J♀×J♂, J…
With acrylic acid,styrene,methyl methacrylate etc.as major monomers,acrylic ester resin coatings was obtained from epoxy modified waterborne acrylic which was synthesized by solution polymerization,being cross-linked and solidified with amino resin.This paper explored a range of factors that influence on properties of…
The performance of irradiating fabric by plasma jet was tested.In this paper,we tested the hydrophilic performance of the fabrin before and after modification,and tested the rate of reagents adhesion the infrared characterization the fabric after attached TiO2,CuSO4,etc.The results showed that the fabric was modified…