Materials Literature
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Hexadecylbenzene was prepared by the alkylation of benzene with 1-hexadecene catalytic with in-situ synthesized ionic liquid.The influences of process parameters,such as different kinds of catalysts,acidity of catalyst,reaction temperature,reaction time,molar ratio of benzene to olefins and influence of recycling use…
Two Schiff bases have been synthesized from acetylferrocene and two different diamines. The products were characterized with elementary analysis, IR and 1H NMR.
The satellites collision incident generating in February 10,2009 is the first collision between two intact orbital satellites.According to satellites' orbit elements before collision,the reason of this incident is analyzed by calculation.A scenario of collision scene is proposed based on primary exploration before det…
Through taking loading test on GRC out decorating part under different connecting situation,the paper analyses according to the testing results about effects of connecting methods and corrosive cracks to loading capacity, deforming ability,safety of GRC out decorating part,so as to push study on GRC part.
The direct bond magnesia-chrome bricks which have been used in burning zone of cement rotary kiln were used,making fine powder which can replace the magnesia of the magnesia-based castable.Effect of fine powder addition on sintering property of magnesia based-castable which bond by SiO2 was studied in the paper.The re…
The crystallography and photoelectric properties of sheet ZnO single crystal(SZOSC) were studied by SEM、TG、XRD、IR、UV-Vis.The result showed that the sheet ZnO was well crystalline,SZOSC has a strong absorbency to near ultraviolet,the trassmittance could exceed 80%;but the absorbency to mid-IR and visible light was only…
The effects of freckle whitening drugs on mouse melanin irradiated by IPL were observed with the slices dyed by hematoxylin-eosin.With the IPL,the relation between the increase of melanin and the effect of freckle whitening drugs was discussed.The mechanism of freckle whitening drugs in reducing the complications in p…
A novel photocatalyst,nanocomposite PW12/PANI/TiO2 is successfully prepared using a chemical oxidation method with(NH4)2S2O8 as an oxidant to form polyaniline-wrapped TiO2 nanoparticles and then by an electrostatic assembly of PW123-anions.The photocatalyst materials are characterized by Fourier transformation infrare…
PBO/SWNT composites were successfully synthesized by means of the in-stiu polymerization procss,and spun into fibers through the dry-jet wet spinning.The single-walled carbon nanotubes were treated with strong oxidizability acids to form the carboxylic single-walled carbon nanotubes.SWNT and PBO/SWNT fibers were analy…
Fluorite-type structured CeO2-δ-ZrO2 solid solutions doped with Y2O3 have been as far used as the world-wide principal oxygen storage materials(OSM)in the three way catalysis(TWC).To improve the oxygen storage capacity,catalytic activity and thermal stability,OSM(LnO2-δ)x-(ZrO2)1-x(Ln=Ce,Pr,Tb)were synthesized using a…
CuS nano-powder is an important photoconductive material with superior performance,which has wide application.Preparation methods of CuS Nano-powder,including precipitation method,solid state reaction,hydrothermal process and template method etc,are particularly summarized.Applications of CuS nano-powder in luminescen…
Tributyl citrate was used to treat the surface of linen cloth in order to improve the interfacial properties of linen cloth/PVC composites,with a view to investigae the influence of surface treatment of linen cloth on interfacial and mechanical properties of linen cloth/PVC composites.The surface and cross section,int…
The effects of heat treatment on microstructure and mechanical properties of as-cast AZ61A magnesium alloy were investigated by optical microscope(OM),field emission scanning electron microscope(FESEM),X-ray diffraction(XRD)as well as tensile testing.The results show that the coarse and network β-Mg17Al12 phase distri…
Tris(3-prefluorohexylpropyl) pentaerythritol (TFPE) was synthesized starting from triallyl pentaerythritol (APE) and perfluorohexyliodide via radical addition by sodium hyposulfite followed by reduction with lithium aluminium hydride. It was used to synthesize the emulsions of fluorinated polyacrylate (FPA) and fluoro…
The emergence of multi-drug-resistant microorganisms leads to a concerted search for leading compounds with particular antibacterial modes of action and activity derived from natural products.Therefore,previously discovered classes of veterinary antibacterial agents that have not been used in humans are also reassesse…
A series of Zr-Al-Si-N composite films with different Al contents were prepared by reactive magnetron co-sputtering method.The films were characterized with energy dispersive spectroscopy(EDS),X-ray diffraction(XRD),and microhardness instrument.The effect of Al element on microstructure and mechanical properties of th…
Technical requirements for normal usage and maintenance of the rollers were introduced. The failure characteristics of pilling off, fracture and cracking which occurring in the working process of rollers and their reasons was analyzed and, in order to reduce the economic loss caused by roller failure, some proper corr…
Two- and three-dimensional quantitative structure-activity relationships were studied on a series of tetrahydroisoquinoline derivatives by using comparative molecular field analysis(CoMFA).comparative molecular similarity indices analysis(CoMSIA) and hologram quantitative structure-activity relationship (HQSAR).Differ…
The nonstructural protein gene NS2 of Bombyx mori densovisus(BmDNV-1) was cloned and expressed to study its function.NS2 gene was amplified by PCR from the infectious clone of BmDNV-1 and inserted into the prokaryotic expression vector pET-28a(+).The recombinant plasmid pET-28a-NS2 was transformed into the competent c…
The reduction of tungsten trioxide nanowire films produced by Ar ion bombardment was studied using in-situ X-ray photoelectron spectrometry(XPS).Experimental results showed that the high valence state of tungsten was reduced to its lower states gradually,namely,W6+-W5+-W4+-W2+-W0,and that the tungsten oxide films with…