Materials Literature
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Two novel cell immobilization supports,Zr(Ⅳ)-and Fe(Ⅲ)-loaded collagen fibers(ZICF,FICF),were prepared by loading Zr(Ⅳ) and Fe(Ⅲ) on collagen fiber.As an experimental model,the immobilization behaviors of Saccharomyces cerevisiae(S.cerevisiae) cells on ZICF and FICF were characterized,and consequently,the fermentation…
Using chitosan with high degree of deacetylation as raw material,a water-soluble chitosan was synthesized using acetic anhydride by N-acetylating reaction in homogenous system of anhydrous alcohol without pyridine.The deacetylation degree,crystalline properties and infrared spectrum were respectively characterized by…
The effects of aldehydes produced by two algae Skeletonema costatum and Prorocentrum micans on reproduction of Calanus sinicus were investigated in laboratory. Aldehydes produced by these two algae were analyzed qualitatively and quantitatively by HS-SPME/GC-MS method. Compared with P. micans,S. costatum showed negati…
There are many structures of rare earth-containing heteropoly compounds including Weakley,Silverton,Keggin and Dawson structure et al.In these structures,Keggin and Dawson structure are studied more than other structures.Some research indicted that [Ln(β2-SiW11O39)2]13-exhibit two different configurations.Large Ln3+ i…
A series of numerical simulations of SHPB test using 921A steel pure shear hat-shaped specimens are conducted with ANSYS/LS-DYNA and validated by the SHPB tests in the present paper. Integrated with the theory of stress wave in a SHPB system,the wave propagation in the bars and the dynamic deformations of the specimen…
The arene yield increasing techniques such as the ART technique of Zeolyst Company,the new technique LOC-X of UOP company that produced xylene and benzene with catalytic light cycle oil hydro-conversion selective transalkylation,the fully transformation refinery and aromatic combination plant of Axens in France,the EN…
In the paper,polyvinylidene fluoride(PVDF) membranes were photografted with the functional monomer N,N′-methylenebis(acrylamide)(MBA) using benzophenone(BP) as photoinitiator in methanol.The influence of solvent,oxygen,irradiate time and concentration of MBA to the photografting were studied.It was found the best solv…
In order to investigate the effect of compatibilizers on β-nucleation in compatibilized β-PP blend,different compatibilizers/β-nucleated PP blends were prepared. The crystallization behavior and crystal form of compatibilizers/β-nucleated PP blends were investigated by DSC and WXRD. Addition of PP-g-MA and PP-g-GMA ha…
Catalysts with highly active Cu-Zn binary component salts were developed and used in the oxidative carbonylation of methanol to dimethyl carbonate(DMC).Reaction conditions of the system were investigated by orthogonal experiments and central composite design with Statistica analysis.Under optimal reaction conditions o…
Algae assemblages in Heilongjiang River (Amur River) at Heihe of China were investigated in sampling six stations in May to October, 2006—2007. A total of 146 algae taxa were identified, belonging to 5 phyla, 7 classes, 15 or- ders, 31 families, 57 genera, 110 species, 31 varieties and 5 forms. Algae community, domina…
Modified starch instead of natural starch was added to the red sausage.Red sausage can significantly increase the flexibility and cohesion,reduce hardness and chewiness,and the red sausage texture characteristics are significantly improved.
In this paper,the product was designed by changing fabric structure,ordering dyed yarns and choosing different fabric density to showthe style and characteristics of the yarn-dyed woven curtain fabrics.Then,a test of main properties was given to those designed fabrics.Finally,the factors effected on the properties of…
This paper is the latter one to〈Research development on the functionalization of cellulose Ⅰ. Oxidization modification〉. This review covers the research development on the functionalization of cellulose, mainly discussing the new cellulose solvents and their dissolving mechanism.
Experimental research of simultaneous removal of NOx and SO2 from simulated flue gas with aqueous urea/ammonia solution was carried out in a bubbling reactor, where the effects of two different additives (KMnO4 and triethanolamine) on the NOx and SO2 removal characteristics were investigated. The results show that KMn…
PP/SF/GF Cmposites were prepared by using Polypropylene(PP) as matrix and sisal fiber(SF),glass fiber(GF) as reinforcement through masticating and melt-compounding.Samples are immersed in water for different days at laboratory temperature.Water-absorption rate and properties were investigated.Experiment results show t…
In nano-composites,the nano-sized particles can enhance some performance of the matrix.In order to study the composites’ mechanical properties at varying strain rates and to investigate the modification effects of nano-particles,the dynamic mechanic experiments on nano-SiO2/Nylon 6 composites are carried out by means…
The cleaning production technology for 2,2 '-ethylene bis(4,6-di-t-butylphenol)(Referred to as bisphenol F) was studied.Using 2,4-di-t-butylphenol and trimeric acetaldehyde as raw materials,dispersing agent and surfactant as reaction solvent,bisphenol F was synthesized.The optimum conditions of synthesis are as follow…
The radial power distribution in the fuel cell and the continuous-energy spectrums in the fuel cell with a temperature distribution are obtained by the wavelets scaling function expansion method.Wave-lets scaling function expansion continuous-energy self-shielding method is developed,in order to solve the nuclide reso…
'Chemically pure' Ag colloids were prepared by laser ablation of Ag plate in pure water.The Ag colloids have good stability and the Ag nanoparticles in the colloids have homogeneous size distribution.The roughened silver electrode modified with the 'chemically pure' silver nanoparticles was used as a substrate.The hig…
Hydrochloride doped polypyrrole(PPY)was prepared by chemical oxidation at low temperature(0 ℃),the structure and morphology of the polymer were observed.The electrochemical capacitive performance of the polymer was researched by galvano-static charge-discharge,cyclic voltammetry and AC impedance methods.The prepared P…