Materials Literature
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In the experiment of carbon nanotubes(CNTs) synthesized by pyrolysis flame method,the flow rates of CO,H2 and He have great impact on the products type,the yield,structure,pipe diameter and the length of CNTs.In order to figure out the specific impact of gas flow rate,many different results were observed under the con…
In this paper,chitosan was conjugated to Fe(Ⅱ) under ultrasound irradiation in particular reaction conditions to form chitosan-Fe(Ⅱ) [CTS-Fe(Ⅱ)].Then,O-hydroxyl isopropyl chitosan-Fe(Ⅱ) [HPCTS-Fe(Ⅱ)] was synthesized via 10% tetramethylammonium hydroxide-catalyzed modification of CTS-Fe(Ⅱ) by 2-epoxypropane in an alkal…
Porous phosphorous slag glass-ceramics are obtained via three-step heat treatment at different sintering temperature by adding pore polyvinyl alcohol and using sintered phosphorous slag waste glass-based powder as raw material.The sintered density,volume shrinkage,flexural strength,compressive strength are tested and…
Ca(NO3)2,and (NH4)2HPO4,were used as raw materials to synthesize the Ag+,Cu22+-doped hydroxyapatite (Ag/Cu/HAP) by adding AgNO3 and Cu(NO3)2 through a coprecipitation method. Effects of the reaction-microenvironment upon the crystal lattice parameter,crystal morphology and thermal stability of the doped hydroxyapatite…
The effect of different heat treatment temperatures on the properties of bauxite-andalusite-pyrophyllite gunning refractory was investigated with bauxite,pyrophyllite and andalusite as raw materials,and calcium aluminate cement and silica flour as binders.After 24 h curing in mould and another 24 h curing at 110℃ afte…
Based upon the sealing mechanism of MMC, basic parameters and main behaviors for graphite sealing gaskets has experimentally researched. The results show that density and volume of graphite, compress thickness are important factors, which effects compressibility, recovery, relaxation and sealability of gasket, as well…
Inorganic hollow micro/nanospheres became one of the hot topics in chemistry and material research because of their unique structure and potential applications.The preparation methods for hollow micro/nanospheres such as template,hydrothermal/solvothermal,surface errosion and ultrasonic electoless plating were reviewe…
A hydroponic experiment was conducted to investigate the influence of iron and manganese plaque on Al uptake and accumulation of Feiyouduoxi No.1 (Al-resistant rice cultivar) and Hongliangyou 166 (Al-sensitive rice cultivar). The formation of iron plaque, manganese plaque and iron/manganese plaque was induced by expos…
With PC and PMMA as main material,the PC/PMMA composites with excellent High-gloss on the surface were prepared by means of the mixing method.The halogen-free flame retardant phosphate was added to improve the flame retardancy of the alloy.In addition,the compatilizers styrene-maleic anhydride copolymer(SMA),ethylene-…
Functional curtain fabric was prepared by foam coating with light-shielding and flame-retardant and anti-static func-tions. Factors affecting the properties of coating paste were discussed,such as dosage of ammonia,foaming ratio and filling material. Results showed that the more the dosage of ammonia was,the better th…
Recombinant cells were permeabilized with CTAB to increase the enzyme activity.Treated cells were entrapped by polyvinyl alcohol and then crosslinked with 2%(volume fraction) glutaraldehyde to increase the stability.With the immobilized recombinant A.faecalis PGA cells as catalyst,D-phenylglycine amine as the acyl don…
Abstract Utilizing starch with the characteristics of good human body biocompatibility,good biodegradable, promoting wound healing and styptic function,the sponge prepared has broad marketing prospects.The casting/lyophilization technology has been developed to fabricate highly porous starch sponges.Knowing that the w…
The linear optical and two photon absorption properties of HA have been investigated by UV-VIS-NIR spectroscopy,fluorescence spectroscopy and fluorescence up conversion technique.The optical properties of the sample were discussed using the theories of PZ-л electron conjugated structures and the intramolecular hydroge…
The multilayer chip varistor is a resistive element consisting of zinc oxide (ZnO) as its main ingredient, and it is newly developed for protection against surge voltage, noise, and other transient voltages.Unlike conventional varistors, its maximum peak current and nonlinear coefficient are very large, and the resist…
The particulate matter(PM) of a diesel engine was sampled by using electrical low pressure impactor(ELPI),volatile fraction(VOF) in PM of the diesel engine was analyzed by the thermo-gravimetric analysis(TGA) when the engine was fueled with diesel fuel and biodiesel.The results show that the VOF content in PM when the…
The composite cycle(IGFC/CC) of the solid oxide fuel cell(SOFC) based on syngas is a clean and efficient coal power generation technology.The model of the IGFC/CC system was presented based on Aspen Plus software platform.The simulation and performance analysis were conducted.The influence of the working pressure(in t…
[Objective]The aim was to optimize fermentation conditions for the production of Linoleate isomerase from Lactobacillus bulgaricus.[Method] By using linoleic acid as inducer,effects of different factor on Linoleate isomerase activity was studied.[Result] The optimuzation fermentation conditions for Linoleate isomerase…
Dawson-type molybdovanadophosphate was synthesized and then used for fabricating organic-inorganic multilayer films with a generation-4 poly(amidoamine) dendrimer as an organic spacer on electrode substrate.The multilayer films were characterized by XPS,UV-Vis,CV and AFM.The results show that the multilayer films grow…
The influence of fabric texture,yarn fineness and fabric tightness on moisture permeability,UV resistance and wrinkle recovery of Nylon taffeta fabrics is investigated.It is concluded that the moisture permeability,UV resistance and wrinkle recovery of Nylon taffeta fabrics with satin weave is better than that of fabr…
The microstructure and wear resistance of Fe-Cu laser cladded coating after aging treatment were investigated by OM,SEM,XRD,TEM and sliding wear tester.The results show that the microstructure of the Fe-Cu laser cladded coating consists of α-Fe(martensite),discontinuous reticulate M7C3 and M23C6.The TEM observation sh…