Materials Literature
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C/Cu composite reinforced by fine weave pierced fabrics of carbon fiber was successfully synthesized by pressureless infiltration in the presence of adding Ti into coppermatrix.The microstructure and interface characteristics of the composite were analyzed by XRD,SEM and EDS.Meanwhile,the thermal conductivity of the s…
The fish scale of tilapia taken as the raw material,the orthogonal test design was adopted to study the pretreatment of the fish scale of tilapia by using alkali method,acid method,enzyme method,acid and saline method,and saline and alkaline method.Then the five optimized processes were compared and the gelatin extrac…
The practical source of ammonium in tannery wastewater was analyzed,treatment technique on ammonium removal of tannery wastewater was introduced,and some suggestion was given.
The phase composition,chemical states and cross-section microstructure of CrAlTiN coatings are comprehensively analyzed by XRD,XPS and HRTEM.The results show that CrAlTiN coating has a clear nanoscale multilayer structure with the periodicity of about 4.9nm.CrAlTiN coating is a composite coating composed of CrN type m…
The influence of tempering process on hardness of quenched 51CrV4 spring steel was investigated.The impact toughness of the steel was analyzed by combining the dilatometric curve of the specimen as-quenched on heating and the microstructure of samples tempered at different temperature.The results show that the hardnes…
The influence of water-soluble macromolecules on the crystallization of calcium carbonate is reviewed combining with our work. The mechanisms are interpreted based on the analysis of calcium carbonate crystallization in the presence of biomacromolecules, synthetic polymers, or mixtures of the polymer and surfactants.…
Influence of adding rare earth and vanadium ions on the plating Ni-P alloying layer of magnesium alloy was investigated,using microstructure analysis and performance test methods.The results indicated that adding soluble vanadic salts could form Ni-P-V alloy,a small amount of RE elements could change structure defects…
Two-photon absorption materials offer great promise as the new generation of fluorescent probes to image and study biological processes.We present water-dispersed two-photon functional organic nanoparticles which have been fabricated via reprecipitation method based on two-photon absorbing molecule 2,5,2′,5′-tetra(4′-…
Manganese oxide octahedral molecular sieve (OMS-2)/cordierite monolithic catalysts were prepared by a coating method using poly(vinyl alcohol) (PVA) or poly(ethylene glycol) (PEG) as the binders.The catalysts were characterized by thermogravimetry-differential thermal analysis,scanning electron microscopy,X-ray diffra…
A new supramolecular compound based on polyoxomet [Cu(phen)2(HPW12O40)]·(phen) (phen=1,10- phenanthroline) have been hydrothermally synthesized and characterized by single crystal X-ray diffractions in this paper. The crystal of this compound belongs to orthorhombic with space group P212121: a=1.220 97(5) nm, b=2.103…
TTF derivative a-6TTF10 was synthesized,the purity and structure was charaterized by NMR,MS,FT-IR.The thermal properties were charaterized by differential scanning calorimetry,the texture of liquid crystalline phase was observed by polarized optical microscope.FeCl3 was used to oxidize the a-6TTF10 to invesitigate the…
Carbon dioxide corrosion of steel can cause severe corrosion and stress corrosion cracking.In this paper,mechanism of carbon dioxide corrosion was introduced,influence factors of carbon dioxide corrosion were discussed,such as material factors and environmental condition.
A kind of thermosensitive block copolymer P(NIPAAm-co-DMAAm)-b-PLA is designed.Using free radical polymerization a hydroxyl terminated copolymer composed of N-isopropylacrylamide(NIPAAm) and N,N'-dimethyl acrylamide(DMAAm) is prepared,then the goal block copolymer is synthesized by the ring opening poly-merization of…
Hemolin is an important insect innate immune protein belonging to the immunoglobulin superfamily.In this study,the hemolin gene in silkworm was cloned.It is 5100 bp long with 5 exons and 4 introns.The cDNA is 1 233 bp long and codes for a 410 amino acid protein with predicted molecular weight of 44.79 kD and pI of 5.1…
The physiological datas of 6 breathes of 6 women were collected and andyzed by using the pulmonary function analyser for doing the tredmill test.The results showed that it was insignificant to use the method of analyzing the physiological datas of the breathes to evalute the impact on the physical comfort from the bin…
The electromechanical transient process of high-voltage line-start (HVLS) permanent magnet synchronous motor (PMSM),HVLS-PMSM,running from start-up to pull-in synchronization is complex.How to make the motor start-up performance,pull-in performance and the overload performance in steady-state operation to achieve the…
In order to choose an appropriate ceramic regenerator filled in regenerative oxidation bed of the thermal reverse flow reactor,firstly the geometric structures of square,tube-shaped,and hexagonal ceramic regenerators were analyzed and investigated theoretically and effects of ceramic regenerator′s porosity and ratio s…
A new type S-Pb ferritic free-cutting stainless steel was manufactured by intermediate frequency furnace and electroslag remelting.The chemical composition,microstructure,inclusion and cutting performance were analyzed by optical microscopy,SEM,EDS and ultra-precision CNC lathe.The results show that the freecutting ph…
We studied the degradation and bio-mineralization performances of poly(lactic-co-glycolicacid)(PLGA) tissue engineering scaffolds in simulated body fluid(SBF) by measuring pH value of SBF,the weight loss rate of scaffolds,the molecular weight change of the materials and analyzing differential scanning calorimetry(DSC)…
The research on insulator's electric-field characters under wet and polluted condition could effectively reduce the risk of insulator flashover.In this paper,the complex electric-field theory is applied,a proper parameter is chosen to represent insulators' surface condition,a 3D model was built for calculation.On the…