Materials Literature
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The effects of weld heat input and trace element niobium on the microstructure and mechanical properties of TIG welded-joint of ferritic stainless steel were investigated.The results showed that the ferrite grains were obviously coarsened in the coarse zone within HAZ and weld zone with weld heat input increasing.The…
In this paper,two polypropylene(PP)/carbon black(CB) films containing 2.2% and 3.3% of carbon black(CB) contents were prepared by melt blending-masterbatch dilution method assisted with high-efficiency dynamic mixer.Based on scanning electron microscopy(SEM) and optical microscopy(OM) images,the image analysis softwar…
Objective: To explore significance of preoperation transcatheter renal artery chemoembolization in treatment of renal carcinoma.Methods: Thirty-nine cases of renal carcinoma underwent transcatheter renal artery embolization before surgery.All cases were embolized with iodinate oil with chemotherapeutic drug and gelfoa…
To study the luminescence mechanism of fluorescent dyes,two different substituted 1,8-naphthaline fluorescent dyes are synthesized using 4-bromo-1,8-naphthalic anhydride and 2-dimethylaminoethylamine.The structures are characterized by mass spectrometry(MS)and nuclear magnetic resonance hydrogen spectrum(1H NMR)and th…
At present,lead-free low-Ag solder alloy,which is low-cost,is defined as the second generation of lead-free solder alloy in the electronics manufacturing industry.Among the second generation of lead-free low-Ag solder alloy type,the solder alloy doping a Little cobalt is paid wide attention because it shows the best p…
(Bi1-xSnx)2Te2.7Se0.3 bulk alloy was synthesized by vacuum melting method.Sn-doped Bi2Te2.7Se0.3 thermoelectric thin films with 800 nm thickness was deposited on glass substrate by thermal evaporation at 473 K.The microstructure of the thin film was analyzed by X-ray diffraction(XRD).The film thickness of the sample w…
The conventional hot rolling and low-temperature hot rolling were performed for an ultra-purified Cr17 ferritic stainless steel stabilized with Nb and Ti,respectively,followed by the same hot-band annealing,cold rolling and final recrystallization annealing successively.The effects of the two hot rolling processes on…
CD is widely used to determine conformation of protein,sugar and the nucleic acid.Commercial CD spectrometers generally measure only down to 200 nm due to the low intensity of lamp sources below 200nm. However,most of structure information is contained below 200 nm for proteins,sugars and the nucleic acids. Synchrotro…
Fabrication of Ni0.5Zn0.5Fe2O4 nanoparticles and Ni0.5Zn0.5Fe2O4/PANI core/shell structured composites through microemulsion approach is reported in this article.The morphology,structure and properties of samples are investigated through XRD,SEM,TEM,FT-IR,TG-DTA and VSM.The SEM and TEM results reveal that the average…
In this paper,the main defects of the sintered AlNiCo magnets and their influences on the quality level are summarized.The reasons for the defects and the improvement measures are given according to the practical experience on production.The defects of sintered AlNiCo magnets are mainly pore,deforming,impurity polluti…
The nano-silica was grafted by using 3-aminopropyl triethoxysilane(APTES) and p-hydroxybenzaldehyde.The structure of the product was characterized by IR spectrum,and antibacterial and antifungal properties were tested by inhibition zone method.The results showed that hydroxyl groups of the formaldehyde could be succes…
The LaNi0.6Fe0.4O3-δ as cathode material for intermediate temperature solid oxide fuel cell was prepared using a combustion synthesis technique.The X-ray diffraction(XRD) pattern showed that the single-phase LaNi0.6Fe0.4O3-δ perovskite could be obtained after heat treatment at 600 ℃.The TEM and SEM images of the synth…
The progress in preparation of anionic,cationic and non-ionic self-emulsifying waterborne epoxy resins and their application in the anti-corrosion coatings,floor coatings,food container wall coatings,waterproofing materials and pouring materials were reviewed.The future developments of waterborne epoxy coatings were p…
Objective To reform enzymatic digestion and create a simple and effective primary culture methods for rat vascular smooth muscle cells(VSMC).Methods 0.1% collagenase Ⅱ was used to digest and isolate the thoracic aorta smooth muscle cells of rat and then cultured.The feature of vascular smooth muscle cells was observed…
The hydroxyl-terminated modified poly(lactic acid-co-e-caprolactone) copolymers(PLCA) were synthesized via directly melt polycondensation with lactic acid(D,L-LA) and e-caprolactone(e-CL) as raw material using linear heating method.The best synthesis conditions were pressure 0.098 MPa,catalyst dosage 0.8%(mass fractio…
The optical microscopy,microhardness test,impact test,SEM and EDS are employed in investigating into the black stripy phase inside welding seam.Results show that the black stripy phase is made by granular carbide segregation,stripy carbide segregation and micro cracks.Such phase has an influence on the impact toughnes…
The new developments of electrospinning nanofibers technologies and products,industrialized varieties and under researching developping new varieties and new applications in Japan,Europe and USA,were aumma-rized.The RD directies and trend in future were pointed out.
FeCo/Al2O3 nanocomposite films were prepared by the sol-gel spin-coating method and the H2 reduction technique.The effects of reduction temperature on the structure,thickness,surface morphology and magnetic properties of the films were investigated by X-ray diffractometer,scanning electron microscope,atomic force micr…
In this paper,in order to obtain the ferrite magnetic fluids of higher saturation magnetic intensity with simple technology,nanometer magnerite(Fe3O4) particles ware prepared by chemical co-precipitation.And to a certain proportion of Dysprosium Neodymium ferrite magnetic fluids on the modification,we selected starch…
The titanium opaque porcelain was synthesized through normal melting-derived route using SnO2 glass-ceramic system.The porcelain was characterized by thermal expansion,X-ray diffraction and cytotoxicity tests.The results of XRD showed that the main crystal phase of the opaque porcelain was SnO2.Its' average coefficien…