Materials Literature
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Ceria-zirconia solid solution-supported LaCoO3 and Ce-Zr-La-Co compound oxide were prepared using citric method.The catalytic activity of catalysts on soot was determined by thermogravimetry(TG).Ignition temperature of LaCoO3/Ce0.6Zr0.4O2 on soot is lower than 552 ℃ of Ce-Zr-La-Co compound oxide,i.e.542 ℃ vs 552 ℃.How…
The chemical structure,preparation,polymerization mechanism and conducting mechanism of polythiophene and its derivatives are introduced.The research progress in electrical properties of polythiophene,polythiophene derivatives and polythiophene based composites is reviewed.These studies indicate that the virgin polyth…
The paper studys high-strength concrete made with limestone powder and slag was studitd.The result shows that it is favorable to compressive strength and flexural tensile strength when the amount of limestone powder is below 15%.The compound of 10% limestone powder and 10% slag can exert good effect,When cementious ma…
Gadolinium oxide nanoparticles(nano-Gd2O3)were prepared by calcining the precursor from coprecipitation and spray drying method,and the morphological structure and shielding property of nano-Gd2O3/NBR composites were studied.The results showed that,the cubic Gd2O3 particles with the size about 100 nm were obtained;the…
The objective for the optimization research is to optimize the total refrigerating performance of the semiconductor-cooling device.This paper systemically expounds the internal structure of the cooling device and interrelated parameters of thermoelectric material,and obtains the optimal theoretical values for the desi…
Aluminum foam projectiles were used to dynamically load clamped quadrate sandwich plates with an aluminum foam core and monolithic solid plates. A laser Doppler velocimeter and a laser displacement transducer were applied to measure the impact velocities of the foam projectiles and the deflection-time histories at the…
Diamond-like carbon films are fabricated respectively on glass substrates and Si(100) substrates in low temperature by Magnetoactive-Radio Frequency-Plasma Enhanced Chemical Vapor Deposition(M-RF-PECVD) method.The film characteristics are investigated by using Fourier transform infrared(FTIR) spectroscopy,Raman spectr…
Dowels and bushing rings are critical conjunction parts in loading equipment.The abrasion between dowels and bushing rings may result in dysfunction of the whole equipment.The abrasion between dowels and bushing rings was analyzed,and it can be divided into three phases:run-in wear,abrasive grain wear,and adhesive wea…
Numerical simulation for selective catalytic reduction(SCR)system of power plant is of economic,efficient and practical advantages.Based on literature investigation,the application of numerical simulation technology in flue gas denitration is reviewed.The development of mathematical models for SCR reaction is summariz…
The research progress on the thermal battery cathode materials is discussed in this paper.The performance of cathode materials(FeS2、CoS2、NiCl2) is compared.The advantages and disadvantages of these electrodes are thoroughly analyzed.Compared to FeS2 and CoS2,NiCl2 cathode material has higher positive potential,lower e…
Base on the energy conservation principle and thermo-dynamics equations,an analytical model of a soft landing airbag considering the elasticity of fabric was presented and validated by LS-DYNA.Then,this model was used to investigate the deceleration characteristics of a horizontal cylinder airbag.A series of simulatio…
The roller vibration milling was used to manufacture nano-zinc particles,which is 50~80 nm and 3~5 nm in diameter at the room temperature by the dry mode.They were hydrolyzed with steam under certain conditions to obtain the mixture of zinc and ZnO nano-rod.After hydrolyzation at 260 ℃ for 2 hours,the hybrid containin…
The research progress in mechanism of methane catalytic combustion,type of catalyst,preparation method and catalyst performance are described. Enhancing catalytic activity of catalysts at low temperature and their thermal stability at high temperature is the main research direction of catalysts for methane catalytic c…
The influences of tempering temperature on microstructure and mechanical properties of a low alloyed ultra-high strength 30Cr3SiNiMoV steel were investigated by mechanical test and scanning electron microscop(SEM).The phase diagram of 30Cr3SiNiMoV steel was obtained by thermo-calc software.The results show that the te…
The effect of water content on the characteristics of water blown polyurethane foam was analyzed.When exponent of isocyanate is 105,function of polyether polyol is 4 and hydroxyl value of 480 mg KOH/g,the relationship of the open-structure cell rate,the qualities of power,the stability of foam and the dosage of water…
[Objective] The study aimed to provide theoretical basis for development and application of molecular marker breeding technique to obtain Bombyx mori near-isogenic lines (NILs). [Method] Thermotolerance gene was introduced into sensitive variety Ou17 by developing NILs and recurrent backcross,then through six generati…
Gelation Process is the main approach to prepare the UO_2 ceramic microspheres,whichserves as the core of the high temperature gas cooled reactor(HTR) fuel elements.In the process of preparing the microspheres,the casting solution is first emitted from the nozzle into an air section in order to obtain droplets with sp…
A high luminescent CdSe quantum dots(QDs) was synthesized by oleylamine and oleic acid as the stabilizer,paraffin liquid as the solvent at relatively low temperature.The obtained CdSe quantum dots were characterized by UV-vis absorption,photoluminescence(PL),infrared(IR) and X-ray diffraction spectra.Effect of oleylam…
PET(polyester) has good wearability in the chemical fibers,and the egg white protein has good biocompatibility.The composite fabric of PET grafted with egg white protein will has good wearability and biocompatibility.In this paper,egg white protein was grafted on PET by poly vinylalcohol glycidyl ether 100%(PVAGE100%)…
Based on a model of coupling thermo-hydro-mechanical dynamic response for a saturated poroelastic medium presented by the authors,the dynamic response of a spherical hollow chamber when subjected to a time dependent thermal/mechanical shock on the inner surface is investigated.By using Laplace transform method,the gov…