Materials Literature
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The antioxidant activity of the extract of the wild edible vegetable—Dregea volubilis(L.f.) Benth ex Hook f.,were studied by the DPPH radical scavenging activity method.The EtOH extract and the EtOAc extract of it showed some scavenging activities,but their scavenging ratios were lower than BHA and VC.These results pr…
Beginning from the analysis of the constitutional elements of clothing space form and comparison of the western and Chinese garment in terms of clothing space,the related questions of the clothing form in the spatial relations is elaborated,including the clothing′s shapes and types,essential factors,both interior and…
Two kinds of Fe-15Mn-5Si-9Cr-5Ni shape memory alloys with different contents of Al are prepared.The shape memory effect is measured after multiple trainings,and the microstructure is observed by the metullugical microscopy and TEM.The result shows that the shape memory effect would be raised markedly after the alloy p…
Properties of four indoline dyes were studied by means of density functional theory (DFT) and time- dependent density functional theory (TD-DFT) with the goal of finding an excellent photosensitizer for use in dye-sensitized solar cells. Theoretical results showed that the frontier molecular orbital structures of indo…
It’s most inconvenient for mobile phone users that the mobile phone is suddenly power off due to lack of electric quantity when we communicate with each other by mobile phone.It is found that there always exits temperature difference between body and environment,which can be transformed to electric energy by using the…
The interface characteristic of steel 45 /Cu alloy bimetal was studied and analysized in view of hardness,combination state and element distribution using micro-hardness tester,SEM and EDS techniques. The results show that,any metallurgical defects doesn't exist in the interface between steel 45 and Cu alloy,bonding z…
Phase transition temperature(TC) of VO2 thin films was changed obviously by doping methods and the TCR of VO2 films can be increased greatly.It is indicated that the Tc can be reduced by doping with the elements of W、Mo,etc,while increased by doping with Al、P,etc.Effects of different doping methods and different impur…
The paper makes a review of the foundry equipment in China. Considering casting output, characteristic of new foundry roject and number of molding line introduction, the difference of equipment between home and aboard is found, the development irection is pointed out.
The rolls system of eighteen-high mill have been simulated and analyzed by using elastic-plastic FEM with the software MARC.In the model,the elastic deformation of rolls system and the plastic deformation of strip are coupled according to contact condition.Based on simulation,the influence of rolling force on rolls sy…
Fe nanowires are fabricated by electrodeposition on the nanoporous anodized aluminum oxide (AAO)film.The X-ray difraction and PPMS are used to study the structure and characteristic of the nanowires. The results show that the [110] preferred on has a high aspect ratio,and PPMS is adopted to measure the magnetic proper…
Melamine-formaldehyde(MF) resin microcapsules containing resoreinol bis(diphenylphosphate)(RDP)were prepared by in situ polymerization.RDP acted as the core material and MF resins as the wall material.The effects of surfactant and prepolymer on the physical properties of melamine-formaldehyde encapsulated RDP microcap…
The effects of the conditions for preparation of CdS particleson,such as:the photocatalysis activity,namely, temperature,[Cd~(2+)]/[S~(2-)],superfluous S~(2-) and the amount of template,were investigated through a photocatalytic degradation of methyl orange as a probe reaction.The product was characterized by UV - vis…
The self-developed corrosion inhibitor (A) and the foreign inhibitor (B) were both evaluated in naphthenic acid environment. The adsorbed film on the inhibitor was analyzed by scanning electron microscope ( SEM) . The results showed that the self-developed corrosion inhibitor (A) exhibited excellent inhibition perform…
The tablet punch die is one kind of mold used in medicinal powder stamp forming.In order to control medicine dosage in allowable deviation scope,the demand for die's size precision,wear-resisting performance and anti-impact properties is very high.In this article conventional heat treatment of this kind of die and its…
The original casting process of casting iron cover was designed by conventional design method.The progress of solidification of original casting process of the cover was simulated by the View Cast software.The results showed that the shrinkage were not found,but the waste of material was discovered.Based on this,adjus…
Objective:To optimize preparation and quality control of dapsone liposome.Methods: According to the orthogonal design,dapsone liposome was prepared by film-ultrasound method;the concentration and entrapment efficiency of dapsone in the liposomes were determined by UV;the particle shape and size and distribution of the…
Research and production of low-cost V-N microalloyed rebars with high strength have been reviewed.Enhanced-nitrogen in V-containing rebars promotes precipitation of fine V(CN) particles,and improves markedly precipitation strengthening effectiveness of vanadium.Industrial production results show that,V content in V-N…
Semiconductor CdTe,core-shell CdTe/CdS and CdTe/ZnS nanocrystals(quantum dots;QDs)were prepared in aqueous phase.Investigations of the prepared nanocrystals were performed via scanning tunneling microscope(STM)and fluorescence spectrum(FS),and quantum yields(QYs)was calculated based on the resulting data from FS.Parti…
The reactive Gibbs free energies,reactive adiabatic temperature,melting rate of Ti and gasification weight of Mg in the Mg-TiO2 and Al-TiO2 system are theoretically calculated. The results show that the reactions of Mg-TiO2 and Al-TiO2 are very easy and the reactions producing various suboxides of Ti may occur in Mg-T…
A novel triphenylamine-perylenebisamidine molecule array(5) was synthesized from triphenylamine,ethylenediamine and 3,4,9,10-perylenetetracarboxylic dianhydride. The structure was characterized by 1H NMR and IR. The optical performance of 5 was investigated by UV-Vis and fluorescence emission spectrum. The results sho…