Materials Literature
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Band structure, density of states, electron density difference, and optical properties of intrinsic β-Ga2O3 and Sn2xGa2(1-x)O3 (x= 3.125%–6.25%) compounds are studied using first-principle calculations based on the density functional theory. The anisotropic optical properties are investigated by means of the complex d…
OBJECTIVES To explore the inhibitory effect of lanthanum and salicylic acid and 8-hydroxyquinoline complexes(La(C7H5O3)2·(C9H6NO),La(Sal)2(Qu)) on growth and cytokinesis in Schizosaccharomyces pombe.METHODS S.pombe was treated with La(Sal)2(Qu) 2,4,6,8 and 10 mg·L-1 under constant temperature shaking culture and solid…
Selenium(Se),known as an essential trace elements,is closely related to human health and diseases.This essential trace element exists in at least 25 selenoproteins in the form of selenocysteine residue,which performs a variety of biological functions.Among these selenoproteins,glutathione peroxidase(GPx) is a well-kno…
MWNT-g-PEG enclosed by petal-like zinc oxide(ZnO) particles were prepared by sol-gel method at ambient pressure and low temperature(T=70℃).The hybrid nanocomposites were characterized by XRD,FT-IR,SEM and TEM.The results obtained exhibited intimate contact between the ZnO nanoparticles and MWNT-g-PEG and ZnO crystalli…
Quasi-static and dynamic tension tests for pure titanium were performed using MTS809 testing system and rotating disk bar-bar tensile impact apparatus,respectively.The isothermal tension stress-strain curves at 0.001s-1 and 0.01s-1 and adiabatic tension stress-strain curves at 300s-1 and 1400s-1 were obtained.The dyna…
Ni-doped chrysotile nanotubes were synthesized by hydrothermal method.The relations among morphology,structure,magnetic and Ni2+ content were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),high-resolution transmission electron microscopy(HRTEM),Fourier transform infrared spectroscopy(FTIR) a…
Bioactive glass(BG)/poly(e-caprolactone)(PCL) porous composites modified by collagen for bone repairing were prepared by combining particulates-leaching and solvent-evaporation methods.The morphology of the porous materials and pore-wall,mineralization activity,ionic concentration and variation of pH values were chara…
The corrosion rate,electrochemical corrosion and galvanic corrosion behaviors of the end plate and the steel bar at metal end of prestressed high-strength concrete(PHC) pipe pile in simulated solutions of chloride salt soil,salina soil,neutral meadow soil and acid soil were investigated by natural immersion tests,pote…
The cabinet of electrical machinery base had a crack around in the bolted connection,which was the powders shaker in the polypropylene plant.Also,there was a block dropped down.The block was analyzed by the way of macro checking,chemical composition analysis,hardness examination and metallographic examination.The resu…
The title nickel(Ⅱ) complex [Ni(C14H10N2O2)(Mf)]n with salicylaldehyde benzoylhydrazone(H2L) were prepared and characterized by elemental analysis,infra-red spectrum,electronic spectrum and X-ray single diffraction.The crystallographic data were as follows: monoclinic system,space P21/c,a=0.9708(4) nm,b=1.4783(7) nm,c…
In order to improve the corrosion resistance of casing steel,the pack aluminizing to N80 casing steel is carried at 950 ℃ for 2 h,4 h and 6 h.By analyzing the microstructure,phase composition,microhardness and electrochemical corrosion resistance of the aluminized N80 casing steel,it is shown that the thickness of the…
Acrylic acid(AA) was grafted onto the surface of polyethene(PE) films to improve their hydrophilicity and anti-clotting properties.The grafting reaction was performed using a benzoyl peroxide(BPO) initiator.Effects of such conditions as BPO concentration,monomer concentration,the optimum temperature and polymerization…
The effects of the spinning process conditions on the grey yarn quality were studied.The results showed that by selecting the 2 400 holes spinneret,controlling the viscosity at 0.642 dL/g,the spinning temperature 284 ℃,main air duct pressure 820 Pa,spinning speed 1 530 m/min,the produced 1.33 dtex super bright PET sta…
Microstructure and impact toughness of HR3C welded metal aging-treated at 650 ℃ were investigated by means of optical microscopy,scanning electron microscopy,energy dispersive spectrometer,XRD and impact test.Results show that microstructure of the welded metal consists of γ-phase and precipitates of Nb(C,N),M23 C6 an…
Selenium nanospheres were prepared from selenious acid reduced by hydrazine hydrate in the soft template composed of sodium dodecyl sulfate(SDS)-polyethylene glycol(PEG) cluster in aqueous solution.The XRD pattern suggests that the red product is amorphous Se.The DSC thermogram of the as-synthesized selenium nanospher…
A prerequisite is of proper corrosion performance for the aluminum foil mesh,which is an important component of the composite of aluminum foil mesh/carbon fiber reinforced polymer (CFRP) for aircraft.For enhancing its corrosion resistance,the aluminum foil mesh was anodized in solutions of phosphoric acid.The anodizin…
The Al2O3 gate dielectric layer was deposited on the heteroepitaxial AlGaN/GaN semiconductor template by using the pulsed laser deposition(PLD) method and its electrical properties were investigated.The results showed that the introduction of Al2O3 gate dielectric improved greatly the interface of the Al2O3/AlGaN and…
To improve the densification and mechanical properties of TiC/316L stainless steel composites,316L stainless steel composites with 5% TiC particles were prepared by using warm compaction forming and microwave sintering.The friction and wear behaviors of 316L stainless steel composites were evaluated on a MM-200 wear t…
A novel unsymmetrical indirectly-connected left-handed phase shift cell composed of spiral resonators is proposed and this kind of left-handed phase-shift units are the key components to realize low-profile monopoles.With the help of full-wave simulation tool,symmetrical directly-connected cell,symmetrical indirectly-…
Dielectric barrier discharge(DBD) plasma can significantly modify the surface of polymers but has limitation of the non-uniform treatment at atmospheric pressure.Hence,we adopted homogeneous discharge plasma produced by DBD,which was excited by repetitive unipolar nanosecond pulses in atmospheric air,to investigate th…