Materials Literature
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The expression pattern of calcitonin gene-related peptide(CGRP)in the duck bursa of fabricius during the embryonic and post embryonic development was studied by the immunohistochemical method.The results showed that CGRP-positive cells with strong reaction were detected in the interfollicle epithelium(IFE)(from 20days…
Microencapsulated ammonium polyphosphate (MCAPP) with an epoxy resin shell was prepared by in situ method. The impact of epoxy resin (EP) content on water solubility of MCAPP was studied. It is found that the water solubility of MCAPP at 25 ℃ and 80 ℃ is much lower than that of APP,and it decreases gradually with the…
Expanded graphite holds the higher resistance without the modification by the special technology.The resistance of expanded graphite will reduce when the addition agent with the higher conductivity is put into the expansible graphite.The applied range of expanded graphite is extended through the modified study of expa…
Zn-ZnO nano-structures were prepared firstly by electrochemical deposition technology and then annealed at different temperatures in air.The prepared samples were characterized by means of XRD,SEM and PL spectroscopy.Based on the analysis and discussion on the testing results,it can be seen that the annealing process…
For magnetic confinement fusion devices,the surface plasma heat flux arriving at PFC(plasma facing components) can be predicted and calculated by ion/electron sheath heat transmission coefficients.The simple relationships of the sheath heat transmission coefficients were derived and discussed for both floating and non…
A polyurethane modified epoxy resin adhesive was used to compounded a kind of room cured structure adhesives of shelter sandwich pannels.Validated through Infrared Spectra,Scanning Electron Microscopy analysis of surface,the large panel structure adhesive has good stability and good toughness;validated through the she…
Ultrathin fibers of poly vinyl pyrrolidone PVP/Ti(OPr)4/Ni(CH3COO)2 composite were prepared with poly vinyl pyrrolidone(PVP) and Ti(n-C4H9O)9 as the precursor with electrospinning technique in sol-gel process.After calcinations of the above precursor fibers at 600 ℃,the TiO2/NiO nanofibers,with a diameter of 50-100nm,…
This article mainly studies the relationship between fabric air permeability and downproofness.It is found that fabric air permeability and downproofness are negatively related,meaning that well air permeability indicates poor downproomess whilst poor air penneability shows good downproofness.In addition,it is found t…
Boron nitride fibers are of high performance non-oxide ceramic fibers,which cattract people's attention after carbon fibers and silicon carbide fibers due to their potential uses in the aviation and spaceflight. Polymer-derived method has become one of the most effective methods to develop boron nitride fibers. Synthe…
Formaldehyde-free resins of citric acid/glyoxal were prepared with citric acid and glyoxal and applied to tussah silk fabric for anti-crease finishing.The influence of citric acid/glyoxal concentration,catalyst type and amount,curing temperature and time were studied,and the optimal anti-crease finishing process of tu…
In this paper,the processing methods of antibacterial fabrics,the antibacterial agents usually applied and their antimicrobial mechanisms were presented.In addition,the test methods for the antimicrobial activity of antibacterial fabrics and the development trend of antibacterial fabrics were also introduced.
Non-covalent action and binding sites for the complexes of α-,β-or γ-cyclodextrin(α-,β-or γ-CD) with piperazine derivative compounds SIPI5838,SIPI5357,SIPI5358 have been investigated by electrospray ionization mass spectrometry(ESI-MS) and nuclear magnetic resonance(1H NMR).The mass spectrometric results revealed that…
Mg is believed to be one of the most promising solid hydrogen storage materials because of its advantages such as large hydrogen capacity,low cost,natural abundance,et al.Besides magnesium-based metal alloys, magnesium-based hydrogen storage composites fabricated by mechanical ball milling have also been researched to…
Two kinds of Fe-5Cr-5Al alloys were prepared by powders metallurgy(PM) and mechanical alloying(MA) methods through hot pressing technique.Their oxidation behavior was also examined at 900 ℃in 0.1 MPa pure oxygen.Results show that the oxidation kinetic curves of PMFe-5Cr-5Al and MAFe-5Cr-5Al alloys deviate from the par…
Alkaline corrosion in the process of silicon crystal, often due to alkaline etching solutions on the corrosion rate of silicon too quickly, thus increasing the surface roughness of Si wafers. Isopropanol with the power to reduce corrosion rate and thus reduce the surface roughness of silicon crystal. This article focu…
Nano-crystalline SiC/ZnO/Si films was prepared by radio frequency(RF)magnetron co-sputtering,and adopting subsequent high temperature annealing.Analyzed the photoluminescence(PL)of the film,observed that the anneal temperature higher,the intensity enhanced,the main reason is the increasing of luminescent centers.The n…
The LaMgAl11O19 ceramic was prepared by a two-step solid sintering method using aluminum hydroxide and lanthanum oxide and magnesium oxide as raw materials.The phase composition,microstructure,specific heat capacity,thermal expansion coefficient,thermal diffusivity,thermal expansion coefficient and thermal conductivit…
The evolution laws of texture and microstructure for Ti-IF steel during annealing were investigated using X-ray diffraction(XRD) and optical microscopy.The results show that the quantity of recrystallization increases with the rising of annealing temperature,and recrystallization starts quickly once reaching the recry…
Urea as the precipitating agent and SDS as the template, mesoporous Al_2O_3Y was prepared by homogeneous precipitation method. Phosphotungstic acid (HPW) was supported on the mesoporous Al_2O_3Y by impregnation method and Al_2O_3Y/HPW was characterized by SEM, XRD, FT-IR, N_2 adsorption. Al_2O_3, mesoporous Al_2O_3 Y…
The performance of squeezing casting(SC) equipment directly determines the quality of SC products.The key technologies and development status of SC press machine were analyzed taking machines of VV type,HV type and HH type as the objectives.For the peripheral equipment of SC,the development of the die and the gating s…