Materials Literature
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AIM: To investigate the implantation of matrigel carrying human adipose-derived mesenchymal stem cells to enhance the cell survival and the improvement of the ventricular functions in infarct heart.METHODS: Human adipose-derived mesenchymal stem cells(ADMSCs) were isolated and cultured from adult adipose tissue.SD rat…
Taking rich iron-nickel slag and fly ash as main raw materials,the the glass-ceramic of R2O-MgO-Al2O3-SiO2 series was prepared.Meanwhile,based on the feasibility analysis of iron recovery from slag,the effect of Li2O,Na2O,and K2O on reduction rate of iron was studied.The result showed that the preparation of glass-cer…
Ni-P-coated carbon nanotubes particles were prepared using electroless plating method.Composite powder was heat treatment at 400℃and 700℃,respectively.The morphology,crystal struck,conductivity and dielectric property of composite powder were investigated.It is found that the carbon nanotubes powder is successfully co…
Objective Preliminary research the tissue engineered skin material in the process of rabbit skin wound rehabilitation.Methods The porcine acellular dermal matrix(pADM) based tissue engineering materials which were prepared with rabbit fibroblast were employed to the healing of skin wound.The processes were observed an…
The thick diamond films were deposited uisng DC arc plamsa jet CVD.The influence of substrates temperature on the growth and stress of the diamond films were investigated by SEM,Raman spectra and XRD.The results shown that the thick diamond films deposited at 950 ℃ exhibited excellent crystal quality and high diamond…
Some shortcomings exist in the Ultra-fine explosives,such as easily to reunite in the processing.In order to solve these existing shortcomings and improve the security of products,Gas Anti-Solvent(GAS) technology was used in the process of Hexanitrohexaazaisowurtzitane (CL-20) ultra-fining crystallization and the cont…
The superfine cuprous oxide powder was prepared with hydrolysis method.The influence of dispersant dosage,reaction temperature and reactant formulation on the of morphology and particle size of the superfine cuprous oxide powder was investigated by using single-factor experiment,and the sample prepared was characteriz…
The nanometer TiO2 powders doped with La3+ in a molar fraction of 2% was prepared from Ti(OC4H9)4 and La(NO3)3 by sol-gel processing.The influence of thermal treatment processing on the photocatalytic activity of TiO2 was investigated through degradation of TNT.The results showed that the fitting thermal treatment tem…
The difference between properties of onecomponent fluorocarbon coatings obtained from two crosslinking systems of blocked isocyanate and amino resin was studied with FEVE (fluoroethylene vinyl ether) resin as film forming substance. The results indicated that the properties of the coating with blocked isocyanate as cr…
The organic surface modification of nano-TiO2 was studied with sodium stearate and sorbitol,by using the orthogonal experimental,the effect of all the factors(concentration,the amount of modifier,time,mixed proportion and temperature) are discussed on the degree of oleophilic,activation and settlement volume.The optim…
To solve difficulties of mechanical properties test of SiC hard coating,depth-sensing indentation method was used to evaluate the hardness and elastic modulus of SiC hard coatings.Common glass and stainless steel are adopted in this test for comparing and to understand the reliability.CVD SiC hard coating with the thi…
The present situation and progress in research on twinning induced plasticity (TWIP) steel are summarized. Based on the introduction of alloying elements for TWIP effect, the distinguishing features, such as microstructures and mechanical properties of the different compositions series of TWIP steels, i.e. Fe-Mn-Si-Al…
Rice husk silica was prepared by burning rice husk treated with the 10%(volume fraction)HCl at 600℃.γ-Glycidyloxipropyltrimethoxysilane(KH550)was used to modify rice husk silica surface.The structure,morphology,and size distribution of modified and unmodified rice husk silica were investigated by Fourier transform inf…
Objective: To study the ultrapathological and diagnosis classification of epidermolysis bullosa(EB) by using electron microscopy.Methods: The skin biopsy specimens were obtained from 22 patients with EB and processed by routine thinsection electron microscopy.Results: Under electron microscopy,22 cases were diagnosis…
PVP /Zn(CH3COO)2 /Fe(NO3)3 composite nanofibers were prepared,and by high temperature sintering of the above precursor fibers,ZnO-Fe3O4 composite nanofibers were successfully obtained.Field-emission scanning electron microscope(FE-SEM),energy dispersive spectroscopy(EDS),thermal gravimetric analysis(TG),fourier transf…
Taking blast furnace dust bag,silica,calcium oxide and aluminum oside as the main raw material,Cao-Al2O3-SiO2 system glass-ceramic was prepared by melting method.The effect of dust bag content on the crystallization behavior in the glass ceramic was investigated using differential scanning calorimetry(DSC),scanning el…
The intermetallic compound Fe3Al was prepared by plasma arc surface remelting,in which the mixture of Al powder and Fe powder was coated on the surface of Q235 steel.The effect of plasma arc surfacing parameters on form of coating was studied,and appropriate process parameters were obtained.The microstructures and the…
Flame-retardant poly(triethylene terephthalate)(FR-PTT) copolymer was prepared by the derict esterification-polycondensation method,and added the esterifiable solution of 1,3-propanediol(PDO) and 2-carboxyethy(phenyl) phosphinic acid(CEPPA) after esterification.The structure and properties of FR-PTT were studied by FT…
The title complex has been synthesized with 4-amino-1,2,4-triazole ethanol solution and zinc acetate methanol solution.Single crystals suitable for X-ray measurement were obtained at room temperature.The crystal is rhombic system,space group Aba2 with crystal parameters of a=0.76732(7) nm,6=1.66444(16) nm,c= 1.090 40(…
ZnO∶Al thin films with(0002) preferred orientation of crystallites were prepared on ordinary glass substrates using radio frequency magnetron sputtering system.GaN epilayer about 320 nm thick was deposited on ZnO∶Al layer by electron cyclotron resonance plasma enhanced metal organic chemical vapor deposition(ECR-PEMOC…