Materials Literature
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The extinction spectra and the electric field distributions of the cross-shaped nanostructures are calculated by the discrete dipole approximation method. Compared with the individual nanorod, the cross-shape nanostructure can generate high local electric fields at the lateral surface. Because of the electric field co…
Plates of austenitic stainless steel are often used in orthopedic surgery for fixing ends of the broken bones and for repairing fractures. The paper analyzes a premature breakage of six plates for fixing broken bones with different patients during their recovery. Each plate's breakage can induce serious aftermaths suc…
茧，为到丝绸蛾的幼虫的开发的一个躲蔽处，包含含纤维的蛋白质丝心蛋白，它由球状的蛋白质丝胶是涂的。丝绸蛾的出现要求 cocoonase 的行动，朊酶由蛹藏匿了。全身的 prococoonase cDNA，与 780 bp 编码 260 氨基酸的开的读框架，被反向的抄写从 6-day-old 的头的全部的 RNA 克隆泰国丝绸的 Bombyx mori 蛹。缺乏编码顺序的 propeptide 的仅仅基因碎片成功地在 Pichia pastoris 被表示，产出细胞外地活跃的 cocoonase。recombinant cocoonase 被 80% 铵硫酸盐分别和 CM-Sepharose 层析净化到同质，并且它的内部肽序列被 na…
Porous Cu with macroscopically aligned channels was synthesized using a freeze-drying process.Camphene-based CuO slurry was prepared by milling at 60 °C with a small amount of dispersant.Freezing of a slurry was done at 25 °C while unidirectionally controlling the growth direction of the camphene.Pores were generated…
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In order to study the properties of the carbon nanotube(CNT) cathode with intense pulsed emission, the outgassing property of cathode is investigated on the 2MeV linear induction accelerator(LIA) injector. Results show that the cathode has a capability of desorbing gases from the CNT cathode under pulsed high voltage.…
采用氧化还原法,通过控制还原时间制备了不同还原程度的石墨烯;用红外光谱、紫外光谱、拉曼光谱、X射线衍射、热重分析、电导率测量等多种手段系统研究了不同还原程度石墨烯的结构与性能;采用透射电子显微镜、扫描电子显微镜和原子力显微镜比较了氧化石墨烯和石墨烯的形貌.结果表明,随着还原程度的增加,石墨烯中含氧基团减少,紫外吸收峰逐渐红移,D带与G带的强度比增加,热稳定性和导电性提高.微观结构表征说明石墨烯比氧化石墨烯片的厚度增加,褶皱增多.
The susceptibility and resistance of type 304 austenitic stainless steel exposed to sulphuric acids (0.3M to 1M concentrations) at ambient temperatures and at higher temperatures were investigated. Weight loss method was used to examine the corrosion rate of the steel after immersion in the corrosive media. The Consta…
Automotive lighting systems are constituted of light sources and projection lens system. Thermal effects may induce hot spots on the reflectors and screens. It is essential that temperature of these hot spots doesn't exceed the degradation temperature level of materials. The crucial issue of our work is to model prope…
Beach rock has only rarely been observed in the coasts. It is a hard costal sedimentary formations consisting of various beach sediments, lithified through the precipitation of carbonate cements. One such formation is noted on the South East Coast of Tamilnadu, India. The objective of this contribution is to collect a…
Poly (vinyl chloride), PVC is widely used because it is easy to process, high productivity low cost and versatility. PVC can be only used for a few applications without the addition of a number of compounds to the basic material so that it can be processed and converted into a finished product. In this research variou…
A simple, rapid, and accurate reversed phase high-performance liquid chromatographic (RP-HPLC) method has been developed and subsequently validated for the simultaneous determination of Tamsulosin HCl (TAM) and Tolterodine Tartrate (TOL) in combination. The separation was carried out using a mobile phase consisting of…
Cubic structure of spherical ZnS nanoparticles with relatively small size and narrow size distribution were synthesized via microwave-hydrothermal (M-H) and microwave-polyol (M-P) methods from zinc acetate and thioacetamide as starting materials. Distilled water and ethylene glycol were used as solvents for the M-H an…
The developing progress of several phosphate flame retardants including alkyl phosphate,condensation phosphate,diphenyl phosphate,cyclic phosphate,cage and snail-like phosphate at home and abroad were introduced.The characteristics and status flame retardant market were analyzed and the development direction and magni…
When HVDC cable is loaded in service,temperature gradient across the cable thickness will lead to field distortion greatly at the outer surface of insulation.In this paper,we adopted a special kind of nano particle as fillers to prepare pure low density polyethylene(LDPE) and three kinds of nanocomposite with filler f…
The petroleum coke based activated carbon was oxidized by ammonium persulfate.The type and distribution of oxygen-containing surface functional groups(OCFGs) on activated carbon before and after oxidation was monitored using elementary analysis,FTIR spectrometry,temperature-programmed desorption coupled with mass spec…
Polyaniline film was prepared by electrochemical method in an acidic solution of aniline. The micromor phology of the polyaniline film was transformed to three-dimensional network structure instead of little particles while the deposition time was extended. The peak wavelength of the photoluminescence spectrum was 491…
Vanadium pentoxide (V2O5) sols were formed through a reaction of V2O5 powder with hydrogen peroxide (H2O2); the solution evolves in time, beginning from diperoxo species, decavanadic acid spedies at intermediate step and finally polymerization of V2O5nH2O sols. From the sols, V2O5 thin films were succesfully fabricate…
Within this paper, extended researches have been carried out regarding the mechanical behavior of a 4 mm thick nonwoven polyester mat subjected to three-point bend tests. From a sheet of nonwoven polyester mat impregnated with a thin layer of polyester resin just to be handled after curing, eighteen specimens have bee…
The scientific basis of the mercerization of cotton with caustic soda is well documented in the literature. There is always a brief mention of the process of causticization for improvement in color yield in the chapter on mercerization in any standard book on chemical processing of cotton. In the literature the concen…