Materials Literature
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Increasing transmission current capacity of existing power cable transmission lines is of great significance to the implementation of smart grid.In order to add transmission current capacity of operation cable dynamically,by analyzing the necessity of increasing cable transmission capacity,we put forward a way of incr…
To decrease the accumulation of space charge in low density polyethylene(LDPE),we prepared magnesium oxide(MgO)/ LDPE nanocomposites by mixing melted LDPE and MgO nano-powder.The dispersion and particle size of MgO in MgO/LDPE nanocomposites were characterized by scanning electron microscope(SEM),the crystallinity of…
In order to study the VOCs emission characteristics and emission factors of the exhaust gas of light-duty gasoline vehicles,different types of light-duty gasoline vehicles in used were tested with a chassis dynamometer according to Limits and Measurement Methods for Emission from Light-duty Vehicles(Ⅲ,Ⅳ).VOCs species…
The anomaterial organobentonite,nano-SiO2 and SBS at different dimensions and scales were used to modify base asphalt material.The processing methods of modified asphalt were applied according to the structural properties of different modifier.The general performance and unconventional performance indicators were used…
Considered the coupling effects of classical interior ballistic equations and band's engraving process,the solution of interior ballistic equations was taken as the boundary condition of the simulation for engraving process,and the results of the simulation were taken as the initial conditions for the interior ballist…
An analytical study was conducted for water mass oscillation in a surge chamber of hydroelectric station under combined load cases. The asymptotic method of nonlinear oscillation was used to solve the nonlinear ordinary differential equation of mass oscillation in throttled surge chambers under combined load cases. An…
In order to solve the problem of the optical method for detecting partial discharge(PD) in the electric equipment in quantity,based on deeply analyzing the physical interpretation of first integral value of signal of the optical method,we obtained a lineal mathematical expression between the first integral value of si…
Cubic boron nitride single crystals of large particle were synthesized by static high pressure method,using Li3N as catalyst.The fracture morphology of the quickly cooled cBN cake was observed by SEM.The layered components distributing near large cBN particles were characterized by XRD.The results of SEM indicate that…
The surface of commercial silicon dioxide particles was hydrophobically modified.The aqueous foams were prepared by stirring mixtures of dodecyl sulfate sodium(SDS) and silicon dioxide particles before or after surface modification.Hydrophobicity of particles,particle additions,concentration of particles adsorbed on t…
Effects of sepiolite,lime and phosphate immobilizing cadmium and lead in contaminated paddy soil in the Diaojiang catchment,Guangxi were investigated through a field experiment,and mechanisms of the effects were analyzed through fractionation of the pollutants in the soil.Results show that the use of these amendments…
Output voltage is an important performance characteristic of planar insulating core transformer (PICT). In PICT magnetic cores are insulated from their neighboring magnetic cores by solid insulating materials. Solid insulating materials can increase leakage flux. This results in a low generated voltage in secondary co…
The semiconducting Cu2ZnSnS4 (CZTS) thin film with high absorption coefficient has long been recognized as a novel solar cell material. In this work, the performances of n-ZnO:Al/i-ZnO/n-CdS/p-CZTS solar cells are analyzed by using semiconductor theory. The influences of doping concentration, thickness, and defect sta…
Mass loss and thermometric methods have been used to study the inhibition of mild steel corrosion in HCl and H 2SO 4 solution by the pyridyl substituted thiourea compound 1-(2,6-diazene)–3–benzyl thiourea (ST 1), 1–(3’-pyridyl) – 3 – benzyl thiourea (ST 2), 1 – (3’- pyridyl) – 1 –phenyl thiourea (ST 3), 1–(2’- pyridyl…
In this chapter, we report on catalysis with nanoporous gold (npAu). Beginning with an introduction to the concept of catalysis, we establish the broader background of the research on the surface chemistry and catalysis with npAu. In the following sections, we discuss the interaction of prime reactants such as O2, CO,…
Silk fibers, animal-based protein fibers, are composed of two fibroin protein filaments embedded in sericin, a glue-like protein coating. The exploitation of silk fibers as sutures and textiles has been done for centuries and industrial-scale production of silk fibers has further expanded their utilization. At present…
Structural and Reliability Analysis of Ohmic Contacts to SiC with a Stable Protective Coating for Harsh Environment Applications, Daves, Walter, Krauss, Andreas, Häublein, Volker, Bauer, Anton J., Frey, Lothar
In this paper we discuss the influence of Na2SO4 EO water (electrolyzed oxidizing water) on the surface of oxygen-free copper. First, we threw light on the etching efficiency of Na2SO4 EO water on the surface of oxygen-free copper by comparing it with the etching efficiency of soaking in NaCl EO water or chemicals. Th…
塑性変形場に発生する応力腐食割れ挙動評価のため，有限要素解析によりJ積分を導出するともに，J積分の簡便評価法を提案した．4点曲げ試験において荷重－変位関係と試験片表面のひずみに基づきJ積分を算出する簡便法を導出した．き裂先端の応力分布は負荷条件やき裂長さによらずJ積分により統一的に表現でき，J積分により塑性変形場に発生・進展する応力腐食割れ挙動評価が有効であることが示唆された．
Stress corrosion cracking (SCC) has been observed near heat affected zone (HAZ) of primary loop recirculation pipes made of low-carbon austenitic stainless steel type 316L in the nuclear power plants. For the non-sensitization material, residual stress is the important factor of SCC, and it is generated by machining a…
ポリ(L-乳酸) (PLLA)の分子特性解析は，クロロホルム(CHCl3)と1,1,1,3,3,3-ヘキサフルオロ-2-プロパノール(HFIP)を溶離液としたサイズ排除クロマトグラフィ(SEC)およびSEC-多角度光散乱(MALS)測定によって行われた．CHCl3あるいはHFIPを溶離液とした通常のSEC測定からPLLAの見かけの重量平均分子量Mwを求めるとおよそ160～200×103 g mol－1であった．一方，HFIPを溶離液としたSEC-MALS測定から絶対分子量Mwを決定すると75～81×104 g mol－1であることがわかった．この違いはSECで用いられる標準試料とPLLAの単位長さ当たりのモル質量が大きく異なること…