Materials Literature
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Objective:To evaluate the characteristics of MRI and histopathology of brain radiation necrosis following radiotherapy for brain neoplasm by γ-knife. Methods: MRI findings of 8 patients with brain radiation necrosis following radiotherapy for brain neoplasm by γ-knife were reviewed, including 4 cases of astrocytoma, 2…
Nano-SiO2 was used as the catalyst of amino-silicone elastomer for crease-resistant finishing of silk knitting fabric.After finishing,the crease recovery angle of silk knitting fabric increases from 200.12°to 255.58°,which does not affect other wearability of knitting fabric,and has well washing resistance.
High molecular weight(HMW) and syndiotactic-rich poly was synthesized by emulsion polymerization,using Vinyl pivalate(VPi) as monomer,2,2′-azobis[2-methyl-N-(2-aminoethyl) propionamide] as initiator,dodecyl sodium sulfate(SDS) as emulsifier.The effect conditions on molecular weight of PVPi were discussed in detail,suc…
The dipolymer [Cu(C12H8N2)(C7H5O2)(NO3)]2 has been synthesized by traditional solution method.This complex is triclinic space group P1 with the cell parameters:a=0.879 21(10) nm,b=0.910 04(10) nm,c=1.164 84(13) nm,α=95.79 80(10)°,β=111.008 0(10)°,γ=95.787 0(10)°,V=0.856 13(17) nm3,Z=2,Dc=1.656 g/cm3.The Cu atom is in…
Nickel-based coatings were deposited using brush electro-plating technique when static magnet field was annexed between substrate and plating pen.Surface micro-morphologies and cross-section shapes were analyzed,the microhardness was tested.The results show that the coating microhardness and thickness go up by static…
A novel multisublattice compound,[Ni(OH)1.115(H2O)0.885]1.22(Ti1.73O4)·1.65H2O,was hydrothermally synthesized with K0.81Li0.27Ti1.73O4 as the precursor.This compound was characterized by XRD,IR,TG-DTA and TEM.In this compound,the TiO2 layers and Ni(OH)2 layers alternately stack together along the c direction,and three…
A new method for precise machining non-cylinder pin holes of pistons was presented by using Giant Magnetostrictive Material(GMM) smart components.To eliminate the impact of GMM smart component hysteresis and nonlinearity,a real-time hysteretic compensation control strategy combining a CMAC neural network feedforward c…
The electrolysis aluminum liquid has high temperature and high content of gas,and the main defects which are existed in the billets produced by electrolysis aluminum liquid are slag inclusion and porosity.The overseas and domestic purifying melt merhods are introduced.The purification is increased significantly throug…
Coating method was applied in cast-infiltration to form a high-hardness layer with boron,chromium and carbon. By changing the percentage of alloy powders,the effects of different coatings on the microstructure and performance of the cast-infiltrated layers were studied. The results show that the alloying surface layer…
In order to improve the surface performance of the H13 die steel,H13-TiC composite layers were made by laser cladding on the H13 die steel substrates.The influences of TiC content on microstructure and properties of H13-TiC composite layer prepared by laser cladding were studied.The thermal stability and friction prop…
Factors affecting on plating rate and solution stability were studied for glyoxylic acid reduced electroless copper plating system.A proper composition of the plating solution was obtained as follows:copper sulfate 16g/L,EDTA.2Na 30g/L,glyoxylic acid 13g/L,2,2'-bipyridine 10mg/L.The optimal pH and temperature were 12.…
With poly(ether sulfone)(PES) as toughener and 3,3'-diallyl bisphenol A(DP) as modifier of bismaleimide resin(BMI),so a curing reaction kinetics of low temperature curable BMI/DP system modified by PES was investigated by differential scanning calorimetry(DSC) based on non-constant temperature.The results showed that…
The microstructure of AZ31 magnesium alloy after various passes of temperature-differential hot rolling was investigated.Combined with simulation results for the rolling process,especially the temperature field distribution within the workpiece,the mechanism for grain refining of AZ31 magnesium alloy during temperatur…
Fe0.13(Co20Ni80)0.87 alloy fine fibers were prepared by organic-gel thermal reduction process using citric acid and metal salts as raw materials. The structure and morphologies of the gel precursors and fibers derived from thermal reduction of these precursors were characterized by FTIR, XRD, TG/DSC and SEM. The magne…
The p-t curves of deuterium and tritium absorption by zirconium were investigated at the 450～630 ℃ by using the method of the reaction rate analysis in a constant volume system. The rate of tritium absorption is lower than the rate of deuterium absorption on the same temperature and the rate of tritium (deuterium) abs…
The synthesizing methods of transition metal oxides for supercapacitor,such as chemical precipitation method,solid phase method,sol-gel method,electrodeposition method,hydrothermal method and molten salt method were summarized.The ideas to improve the specific capacitance of metal oxide electrode by element doping wer…
Polyclonal antibodies against three kinds of red tide algae with different sizes.Heterosigma akashiwo,Gymnodinium sp.and Alexandrium catenella were raised in this study.Block affinity treatment was done to enhance the specificity of the antibodies.The titer of three polyclonal antibodies was determined by indirect enz…
The production process of low melting point polyester staple fiber in which COPET is for the sheath and PET is for the core is introduced. The effect of COPET chips selection, COPET/PET ratio, chips transport and drying, vacuum twin screw extruder, spin pack, spinning temperature, crimping machine, dryer and bale pres…
Multi-metal tanning agent was prepared using chromium,aluminum and titanium salts and organic ligand LA as raw materials.Constituents and properties of the Cr-Al-Ti tanning agent were studied.The results showed,under the condition of the dosage of LA at 20% of metals ion mol contents and the mol ratio of n(Cr3+)∶n(Al3…
The ratio of water to sewage sludge is 80% in wastewater treatment plant, besides,are all kinds of injurant.Combustion is the most innocuous method to deal with this injurant.Bubbling fluidized bed incinerator is the main waste-burning device.Without assistant combustion-supporting like coal,the injurant would not be…