Materials Literature
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Polybutadiene/ethylene propylene diene methylene rubber blends filled with chitosan was prepared.The effects of chitosan on curing and mechanical properties,demouding and morphological properties of the compound were studied.The results showed that the blends had higher vulcanization rate with the chitosan content inc…
Through detecting the contents of amino acids and organic acids in the cells of two strains of S.erythraea including an industrial strain(strain A) and a wide-type strain(strain M) in four kinds of single nitrogen source,their nitrogen metabolism were compared.The results showed that,whether in same strain or in diffe…
Two forging methods for helical gears including rolling forming and floating die forming were introduced.Aimed at the two processes,different type helical gears were researched by both numerical simulation and physical experiments.Characteristics of metal flowing,forming defects and forming load were analyzed in diffe…
Dendronized polycaprolactone-poly(ethylene glycol)-polycaprolactone temozolomide-loaded microspheres were prepared by water/oil/water(W/O/W) double emulsion method with sodium dodecyl sulfate as emulsifier,dichloromethane as organic solvent,deionezed water as water medium.Microspheres with a range of 2.20 to 3.26 μm i…
Silver film was prepared on copper through galvanic exchange reaction by immersing the copper in AgNO3 solution,and then modifing the silver film by 12-hydroxy stearic acid(HSA) to prepare successfully the silver film modified by HSA.The morphology,superhydrophobicity,superoleophilic and the stability of water contact…
Poly[bis(hexan N-carbazol)]phosphazene(5) was synthesized by nucleophile substitution reaction of hexan N-carbazol with linear polydichlorophosphazene which was straightly prepared by one step method from PCl5 and NH4Cl.The structure was characterized by 1H NMR,31P NMR,IR and GPC.The thermal analysis test results show…
Nano Cu2O semiconductor photo-catalyst was prepared by homogeneous chemical reduction method with ascorbic acid as reducing agent.Its physical properties were characterized with XRD and SEM.The results showed that under simple and moderate preparation condition crystal Cu2O cubic with side length of of 70～140 nm can b…
Button supercapacitors with aqueous and organic electrolytes were prepared employing activated carbon as the active substance of the electrodes,carbon nanotubes(CNTs) as the conductive additive and polytetrafluoroethylene(PTFE) membrane as the separator.The advantage and disadvantage of the performance including capac…
Objective To establish an ion chromatographic method for the determination of methanesulfonic acid in imatinib mesylate.Methods The analysis was performed on IonPac AS11-HC negative ion column(250 mm×4.0 mm) with 10 mmol/L potassium hydroxide solution as eluent by electrical conductivity detector.The flow rate was 1 m…
The effects of macro-and micro-leveling agents and current density on surface smoothness of copper micro-bump were studied. The action mechanism of the two types of leveling agent and current density on copper micro-bump surface was discussed. The composition of plating bath and process parameters are as follows: CuSO…
Nanocrystalline Ni-Fe alloy coatings were prepared on Cu-Zn alloy substrate by pulse electroplating.The morphology of as-prepared Ni-Fe alloy coatings was observed using a scanning electron microscope,and the grain size of the alloy coatings was analyzed by means of X-ray diffraction.Moreover,the anodic polarization c…
ORIGEN-2 was used to analyze the accumulation of radionuclide in the marine reactor under discontinuous operation.According to the factors affecting the radionuclide accumulation,13 kinds of nuclides with chief contribution to the early dose were divided into 4 categories.Their expressions ware obtained with the corre…
Aimed at exploring the mechanism by which gas protects pure magnesium and AZ91D alloy from oxidation and combustion,this paper introduces an investigation into the protection behavior of gas mixture with volume fraction of 3% SO2 and 97% CO2,as is the case with pure magnesium and AZ91D alloy in an open melting furnace…
Properties of bias cut garment are presented based on a research into the concerning subjects.Through a case study on the plate-making of sheath skirt the paper illustrates the plate-making of bias-cut skirt,which proves to be feasible through two practical creative designs of dresses.
In order to investigate the process of projectile penetration at different incidence angles characteristic analysis,finite element analysis software environment of the projectile is simulated of the overload.Obtained by analyzing the displacement of the projectile penetration process shot,acceleration and of stress ov…
Tungsten trioxide nanoparticles were synthesized by a hydrothermal method using ammonium metatungstate as tungsten source and cetyl-trimethyl ammonium bromide as surfactant with subsequent calcination treatment at different temperatures.The as-prepared WO3 nanoparticles were mixed with dispersing agent and binder to o…
The environment friendly temporary protective coatings for optical glasses was made by using polyurethane aqueous dispersion as film fomer,and then mixing with surface active agent,antiblock agents and defoamer.The effects of film fomer,additives and coating process on propeties of coatings were studied.The results sh…
Polycrystalline diamond film was grown using H2-CH4 as the source gas in a newly developed ellipsoidal MPCVD reactor at 8 kW microwave power levels.Surface morphology,quality,transmittance,thermal conductivity as well as complex permittivity of the diamond film were examined by scanning electron microscopy,Raman spect…
In order to predict the composition range of SiO2-Al2O3-MnO inclusions with good deformability in the 42CrMoA crankshaft steel,the equilibrium between molten steel and SiO2-Al2O3-MnO inclusions were calculated using the thermodynamics calculation software Factsage at 1873K.The results show that the component of SiO2-A…
Acid-soluble collagen(ASC) and pepsin-soluble collagen(PSC) from the skin of crocodile(Crocodylus) were prepared and comparatively characterized.Both collagens displayed a distinct absorption peak at 232 nm in their UV absorption spectra.SDS-PAGE analysis showed that the peptide chain composition of ASC and PSC reveal…