Materials Literature
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MgO-Al2O3-SiO2-TiO2-CeO2 system glass-ceramics were prepared with industrial-grade raw materials using melting method, and the microstructures and microwave dielectric properties of the glass-ceramics obtained at different crystallization temperatures were investigated. The results show that with the increasing of the…
Based on the analysis of the gears' working condition and failure mode,this paper puts forward the requirements on mechanical property of lathe headstock gears,and accordingly selects the metal material.Reasonable machining and heat treatment methods is planed to meet the application requirements.
Objective To study the disinfection properties of hydrogen peroxide silver ion disinfectant.Methods Carrier qualitative germicidal tests were used to observe the germicidal efficacy and stability of hydrogen peroxide silver ion disinfectant.Results The disinfectant containing 100 g/L hydrogen peroxide and 109 mg/L sil…
To confirm the practical performance index such as erase-write velocity,power operation and integration of the nonvolatile Resistive Random Access Memory(RRAM)further,the RRAM cell circuits are designed,besides,the delay time and power operation characteristics of the RRAM cell circuits are simulated by HSpice program…
The organic light-emitting devices and related materials have attracted much interest recently due to the potential of application in organic solid electric devices.The study have show that Metal-chelate can be used as luminescence materials,for example,8-hydroxyquinoline Al has been used in OLED widely.8-hydroxyquino…
The electronic structure and energy of helium atoms in titanium crystals were calculated using the density functional theory method on the basis of quantum chemistry. The results indicate that the single helium atom is most possibly set in octahedral interstitial position in the perfect titanium crystals. The two heli…
For any k≥2,the subshift of finite type is determined by the k×k 0-1 matrix Ak=(aij),where aij=1 if and only if i=k or j=i+1.By establishing the topologically conjugate relation between such a subshift and an interval map restricted to some invariant set and using a known result,we prove that the subshift is distribut…
Three complexes of europium(Ⅲ) with Taurine-salicylaldehyde Schiff base([(Eu(TSal)L(NO3)]·2H2O,TSal:Taurine-salicylaldehyde Schiff base,L1:1,10-phenanthroline,L2:2-aminopyrimidine,L3:2,2′-bipyridine)have been synthesized and characterized.The interaction mode between the complexes and calf thymus DNA has been investig…
This research was supported in part by the IT Leading R&D Support Project from the Ministry of Knowledge Economy through KEIT.
2,2′-diselenobisnicotinic acid tert-butyl ester (1) and 2,2′-diselenobisnicotinic acid (2) were synthesized based on 2-chloronicotinic acid. Compounds 1 and 2 were well characterized by 1H NMR, 13C NMR, 77Se NMR, elemental analysis and X-ray single crystal structural analyses. The crystal structure of compound 1 belon…
A novel compound, (IBzQl)(TCNQ)2 2 (IBzQl = 1-(4-iodobenzyl)quinolinium and TCNQ = 7,7,8,8-tetracyanoquinodimethane) has been fabricated and X-ray single-crystal structurally analyzed. This compound crystallizes in the triclinic system, space group P1 with a = 8.3540(17), b = 13.284(3), c = 16.185(3), α = 82.12(3), β…
Compared with ordinary coatings,nano-composite coating usually has a higher hardness and better wear and corrosion resistance.As coating materials,nano-CeO2/Zn composites were prepared by nano-CeO2 and Zn powder.The microstructure was investigated by XRD and FESEM.The corrosion resistance and hardness of nano-CeO2/Zn…
Twisting, warping and weaving technologies of polyester filament fabric are discussed. In addition, the view points and the problems to be concerned in the production are put forward aiming at the current status of the business.
A series of CeO2 supported V2O5 catalysts were prepared by incipient impregnation for low temperature selective catalytic reduction(SCR) of NOx with ammonia(NH3).The effects of V2O5 loading of catalysts and calcination temperature on the catalytic activity were investigated.A combination of various physicochemical tec…
Tetra-(p-nitrophenyl)porphyrin was efficiently synthesized from pyrrole and p-nitrobenzaldehyde under microwave irradiation with lactic acid as catalyst for the first time.The effects of solvent,catalyst,microwave irradiation time,microwave irradiation power on the yield of tetra-(p-nitrophenyl)porphyrin were investig…
The microstructure and mechanical properties of hot rolled C-Mn-Si TRIP steel based on dynamic transformation of undercooled austenite were investigated by uniaxial hot compression tests on a Gleeble1500 simulation test machine.The results show that the microstructure obtained by the hot rolled process based on dynami…
This paper introduced the RD of anti-bacterial PP material specialized for washing machine,compared several anti-bacterial agents and selected the most appropriate one,analyzed the effects of dosage of organicinorganic composite antimicrobial agent on its anti-bacterial result,and the anti-bacterial principle and char…
Based on SHS reactive flame spraying TiC-TiB2 multiphase ceramic coating technology,the collision behavior of the flying particles with the substrate was investigated.Different morphologies of the collided particles were observed and their causes of formation were analyzed.The results show that the SHS reaction of the…
Unsaturated polyester resin is formulated with bicyclopentadiene(80% ) as main materials. It is a kind of low-cost, easy-and-simple-to-handle synthesis procedure with less side reaction. The product shows light color, good dryness and excellent comprehensive property.
The CO2 purity is low before feeding oxygen,the exceeding standard of H2 affect the normal production,so it analyzes the reason and treatment.