Materials Literature
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In order to improve the calculating quality on reduction to the pole (RTP) of magnetic anomalies, the paper propose a method of RTP based on the discrete cosine transform (DCT). We deduce theoretical formulas conversion of RTP of the total field anomalies for two and three dimensional bodies according to the cosine tr…
Mn composite oxygen catalyst was prepared by thermal decomposition.Structures and electrochemical performance in alkaline and neutral electrolyte of Mn composite oxygen catalyst were measured and characterized by X-ray diffraction,cathodic polarization curves,the constant potential square,and discharge tests.The resul…
Using the quantum master equation method we studied the spin-polarized transport through a single-molecule magnet coupled to ferromagnetic leads.For the case that the spin-polarized orientations of the left and right leads form an arbitrary angle we calculate the probability of the quantum states of the molecular magn…
La2Mo2O9-based oxide-ion conductors have attracted more and more attention since it was reported having high ionic conductivity in 2000 by Lacorre et al. Especially the W-doped La2Mo2O9 oxide-ion conductors . In this paper the recent investigation on the La2Mo2-xWxO9 oxide-ion conductors is reviewed. It is focused on…
In order to optimize source of fuel cell,double-sector fixed bed was designed to produce hydrogen.Two series of catalysts(NiO/ZnO and CeO2/ZnO catalysts,Ni/γ-Al2O3 and Fe2O3/Al2O3 catalysts) were synthesized by co-precipitation method.It is found that double-sector fixed bed could enhance the hydrogen selectivity over…
This paper introduced the operation status of 100 t·d-1 CaCO3 filler production line using technology of high-effi-ciency carbonization of straw pulp lime mud in Tiger Forest Paper Group,which has most self-intellectual property rights and the largest scale up to present.
The effect of elemental diffusion from strontium-doped samarium cobaltite (SSC) cathode to lanthanum strontium magnesium gallium oxide (LSGM) electrolyte was investigated by electrochemical impedance spectroscopy (EIS) combined with X-ray diffraction (XRD). The XRD results showed that LaSrGa3O7 and LaSrGaO4 appeared a…
Precipitation of supersaturated caustic solution in the industrial Bayer process is usually seeded.The study of unseeded liquors is necessary for the determination of the critical stable nucleus size,interfacial tension,the order of nucleation and so on.Homogeneous nucleation of Al(OH)3 crystals from synthetic,optical…
A new type cationic surfactant,ammonium of cinnamate was synthesized from cinnamic acid,epoxy chloropropane and dodecyl dimethyl amine.The structure was characterized by IR spectrum.The foaming characteristics,surface tension and Krafft point of the surfactant were determined.The minimal inhibitory concentration of th…
Geometrical structures of the supermolecular systems of nitroglycerin(NG) with polyethylene glycol(PEG),hydroyl-terminated polybutadiene(HTPB),glycidyl azide polymer(GAP),poly(3-azidomethyl)3-methyl-oxetane(AMMO) and poly(3,3-bis(azidomethyl)-oxetane)(BAMO) were optimized by the semiempirical molecular orbital theory…
The nanocrystalline ceria-based precursor powder doped with samarium(Sm),gadolinium(Gd)and both of them were prepared separately via a homogeneous precipitation process where the urea and hexamethylenetetramine(HMT)as precipitants with the high-purity reagents Ce(NO3)3·6H2O,Sm2O3 and Gd2O3 as starting materials were b…
White OLEDs with hole injection layer [(MoO3 or m-MTDATA)],and electron transport layer (Alq3 or Bphen) are prapared.With 9,10-bis (2-naphthyl)-2-t-butylanthracene (TBADN) doped with 3% P-bis (P-N,N-diphenyl-aminostyryl) benzene (DSA-ph) and 0.05% 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7,-tetramethyl-julolidy-9-enyl)…
The acetylation process of silk protein for preparing a green and nutrition surfactant was investigated in this study.Some major technological parameters such as silk protein concentration, acetic anhydride amount, reaction temperature, reaction time, and pH were explored using orthogonal array design.The optimal valu…
The charpy impact properties,distribution and composition of precipitates in X80 pipeline steel with different microstructures have been studied by means of optical microscopy,transmission electron microscopy and drop weight impact testing.The results show that the pipeline steel with acicular ferrite or polygonal fer…
After analysis on the structure of an automotive electric support and its forming characteristics and difficulties,some technological measures were planned.An optimal design was achieved by comparing and calculating various layout design schemes;and a precision progressive die combining processes of blanking,bending a…
A systematic study of low damage etching recessed gate of AlGaN/GaN HEMT is performed adding a little flux of passivating gas C 2H 4 to the Cl 2/Ar inductively coupled plasma,and the Cl 2/Ar/C 2H 4 is optimized.The surface damage and degeneration of AlGaN are avoid and the etching resultant is removed from the surface…
A simple method to detect the diffracted beams polarization state by use of Jones calculus is presented.The permanent refractive index phase grating was formed in C60-doped nematic liquid crystal by two interfering laser beams.Both recording beams are p-polarized.The transmission Jones matrix describing the polarizati…
Paper process sludge is a kind of biosolid waste. The recycling of paper process sludge is a significant way of sludge reclamation to meet the needs of recycling economy,cleaning production and sustainable development. The current development situation and achievements at home and abroad in the paper process sludge re…
The carbides types,techniques preparation,microstructure,property,and applications range of three kinds of chromium white cast iron were introduced.The research status of chromium white cast iron was summarized and the future development of chromium white cast iron was discussed.
Welding repair saves lots of money.The experiment was based on QT600-3,and leypewter was used as the filler metal for arc brazing.The filler metal could wet the base metal by the analysis of the wettability of the solder,the joining of the weld,the microhardness,microstructure.Experiments preliminary achieve the targe…