Materials Literature
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Total RNA of Microula sikkimensis was extracted from leaf.The actin gene fragment was amplified by reverse transcription polymerase chain reaction RT-PCR and then cloned into pGEM-T vector.The gene fragment was sequenced after identifying the positive clone by PCR.The results revealed that the actin gene fragment from…
The steel rolling technology progress in China during past ten years is summarily introduced,which includes: 1) Development of steel production and product ranges and structures in China in nearly ten years;2) The technology integration and development of hot rolling wide strip steel,widen and heavy plate,large cold c…
N,N-Dicarboxymethylchitosan and its zinc,silver,copper salts were prepared and their bacteriostasis were studied.Firstly,a water-soluble N,N-dicarboxymethylchitosan with high degree of substitution was obtained by reaction of chitosan with monochloroacetic acid,and its zinc,silver,copper salts were prepared.The isoele…
To improve the hardness of AZ91D magnesium alloy,Si powder was preplaced on the surface of AZ91D magnesium alloy and then treated by a high power continuous wave CO2 laser.Mg2 Si reinforced Mg-based matrix composite were synthesized.The microstructure formed in laser surface modified layer were investigated by means o…
Solid-liquid equilibrium data and eutectic point of 2, 6-DIPN and 2, 7-DIPN binary systems were measured. Ideal solution model was used to correlate the data. The experimental results showed that binary system of 2,6-DIPN and 2,7-DIPN was a simple eutectic phase diagram, the mixture was a eutectic system with x_1=0.87…
By studying the relationship between mechanical properties of PGLA fiber and crystallinity and orientation,it is found that the elastic modulus and elongation at break of PGLA fiber depends on the amorphous orientation function and crystallinity,but has nothing to do with the realization of the processing conditions o…
Heavy side damage of ship and people loss was caused by ship-ship collisions.Due to the accidents of inland tankers collision,oil was split into the river.The scarce water resources were polluted and people's living standards was threatened.The influence of side crashworthiness was discussed by comparing with differen…
Wear behavior of NBR and its mechanism treated by different velocity were studied in dry sliding and oil lubricating condition using a MPV-600-type compute-controlled abrasive wear test machine.The results showed that:In dry sliding condition,the friction coefficient of NBR decreased with the increase of velocity and…
Hydrothermal reaction of CuCl2·2H2O,NaH2SIP(5-sulfaisophthalic acid monosodium salt) and 1,10-phenanthroline led to a new compound [CuCl(phen)2]·H2SIP·3H2O.The title compound belongs to triclinic system with space group P-1,a=11.1242(2) A.,b=12.0676(2) A.,c=12.1908(2) A.,α=93.202(2) °,β=96.181(2)°,γ=105.845(2)°,V=1559…
The curing property of several different aromatic amine curing agents and epoxy resin was studied,and one kind of aromatic amine curing agents which can be used on copper clad laminated(CCL) was determined.By gel-time experiments and DSC scan,the reactivity of several aromatic amine curing agents was investigated,and…
Introduction of corrosion inhibitors is a kind of efficient methods to resolve the corrosion problems of copper and its alloys in piping system.The status of research on organic,inorganic and natural polymer corrosion inhibitors as well as the technique of self-assembled monolayer for improving the corrosion resistanc…
Sr2Al6O11:Eu2+,Dy3+ blue light-emitting phosphor was prepared by high-temperature solid state reaction technique.The effect of sintering temperature,B2O3 and holding time on the phase of luminescent material and the luminescent spectra of Sr2Al6O11 at room temperature were investigated.The results show that the sample…
The chloride penetration for high performance marine concrete was studied.It is found that the high hydraulic pressure has no obvious effect on the interior distribution of chloride but could increase chloride content at the effective influence depth of hydraulic pressure.
The normal-gate cold cathode structure of the carbon nanotubes(CNTs) field emission cathode and diode structure have been established,and the field emission properties of CNTs have been simulated and calculated based on the finite element method.The effects of normal-gate,gate voltage and gate aperture on the distribu…
The effects of alloying elements and surface technologies,including chemical conversion treatment,micro-arc oxidation and electrochemical plating,on corrosion resistance of AZ91 alloys were reviewed.The corrosion behavior of AZ91 alloys was analyzed.The ways to enhance corrosion resistance properties of AZ91 alloys we…
With silicone resin modified by epoxy resin(EP) as matrix resin,so a bonding priming with high temperature resistance and anticorrosion was prepared when zinc chrome,iron red and other fillers were introduced into systems,and a bonding finish coat with hiding power and high temperature resistance was prepared when ana…
With supported bilayer lipid membrane (s-BLM) serving as a biomembrane model,and Fe(CN)3-6 and Fe(CN)4-6 serving as redox probes,the influence of dodecyl sulfobetaine(DSB) on s-BLMs was investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The following conclusions were obtained. Th…
With use of residue of bamboo and wood as raw material,and bamboo particle,wood fiber being basic unit,a new type of composite board were prepared by hot-pressing process.And the size of bamboo particle,the mass ratio of bamboo particle to wood fiber,resin content and target density were selected as technological fact…
The solid films with different surface structure were prepared by controlling the concentration of polystyrene(PS)/THF solution using the method of electrospinning PS.The morphology and surface wettability was characterized with FESEM and OCA.The result showed that the concentration of PS/THF solution was the key fact…
The microstructure and mechanical properties of AlP-modification ZA84 magnesium alloy containing silicon were investigated using optical microscopy and JEM-2000FX transmission electron microscopy equipped with OXFORD ISIS EDXS.The results show that as compared to the as-cast,the edges and corners of phases Mg2Si and τ…