Materials Literature
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We deomonstrate the existence of optical topological transition, the optical equivalent of Lifshitz transition in electronic systems, by controlling the topology of the optical isofrequency curve using metamaterials.
Two new polyhydroxypregnane glycosides, namely cynotophyllosides G-H (1-2), were isolated from the roots of Cynanchum otophyllum, together with three known steroids. Their structures were established by spectroscopic methods and acid-catalysed hydrolysis. Cynanchum otophyllum also known as “ Qingyangshen“ in tradition…
This paper aimed to analyze the net social benefits from switching petroleum-based plastic to bioplastic based on Cost-Benefit Analysis (CBA). The status quo was no PLA production in Thailand and another case is having PLA production based on the assumption that the HDPE production was not replaced by the PLA producti…
This paper is the second part of the research work dedicated to evaluation of mechanical properties of polymer composites reinforced by knitted fabric. Three different approaches were applied for the task. Two of them: a) FEM analysis using Solid Works combined with structural modeling based on experimentally-determin…
Employing nanomaterials and nanoparticles in the industrial and research area could reduce use of certain agrochemicals such as pesticides, and further provide a better ability to control the application and dosage of active substance to the target. Here, the use of silica nanoparticles (SiNPs) as biopesticide was app…
Particles that have the potential to deliver imaging agents and drugs to cells and tissue now have many different shapes and sizes. This diversity in particle shape could provide new options for potential treatments of diseases because geometry affects biodistribution. However, the myriad of particle shapes now availa…
Structural investigation of the species present during protein fibrillation is of tremendous importance, yet complicated by the equilibrium between species of very different sizes and life-times. Small-angle X-ray scattering may be applied to solve this problem, providing both information about the process (number of…
Space charge accumulation is an important reason that affects the safety of crosslinked polyethylene(XLPE)insulated DC power cable.A quantitative description of space charge dynamics within XLPE insulation under DC field can provide helpful information for inhibiting the charge built-up and improve the reliability of…
10 kV switchgears are important equipment in Chinese power distribution networks.The defects such as insulation degradation and poor contacts in a 10 kV switchgear,which are difficult to be detected while the switchgear is operating normally,may harm its safe operation.Therefore,this paper proposes a joint partial dis…
To investigate the factors affecting the adsorption of pollution particles on the surface of electrical insulator,we set up models of pollution particles and the surface of an electrical insulator,respectively.On condition that the surface boundary layer effect of electrical insulator is considered,the force on pollut…
The bonding interface between the rod and the sheath of composite insulators,which through both ends of the insulator is an integral part of the inner insulation.If the bonding of the composite insulators' rod and sheath is not closely,the air gap between the rod and sheath will affect the electric field,and the mecha…
In order to assess the aging characteristics of composite insulators based on the thermally stimulated current(TSC) test,the composite insulators in service were studied using the TSC test and the HC water spray hydrophobicity test.The influences of several aging factors on the shed materials of composite insulators i…
In wet shaping, the amount of dispersant added to the slurry is a crucial factor in producing high-quality ceramic products. Many researchers have investigated the amount of dispersant that adsorbs to slurry particles. However, few studies have examined how the solid concentration of slurry affects the amount of adsor…
Изучены масс-спектры ионизации электронами этиопорфиринатов-II кобальта(II), никеля(II), меди(II), цинка(II) (MEP-II). Проанализированы пути фрагментации молекулы при диссоциативной ионизации.
The numerical modeling of a binary solidification with a mushy layer mechanism is considered in this manuscript. The nonlinear coupled system of equations describes the heat and mass diffusions of a one-dimensional spatial variable in the semiinfinite interval. Also formulated is a transformed system in a finite inter…
This paper theoretically investigates the profiles of liquid bridge formed between two parallel planes and the meniscus forces acting on them, and shows the effects of the aspect ratio φ of the bridge section and the contact angle on the meniscus force. Laplace pressure, which is a major contribution to the meniscus f…
Surface tension is a dominant force in gas-liquid flows within micro/nano spaces, such as gas-liquid flows of micro-electro-mechanical systems, nano-in-print processes, and resin coating processes. We developed a surface tension model for a particle method to simulate gas-liquid flows within micro/nano spaces; the int…
共振增强拉曼光谱技术是表征和研究单壁碳纳米管(SWNTs)的有力工具, 它既能用于SWNTs的几何结构表征, 又能反映SWNTs的电子态密度信息. 特别指出的是, 由于共振拉曼效应, 它能够灵敏地检测单根SWNT的局域信息. 本文首先概述了SWNTs拉曼光谱的RBM峰、G峰、D峰和G'峰的特征和应用, 然后综述了共振增强拉曼光谱在SWNTs的结构表征、形变测量、缺陷测量和温度测量中的应用和进展, 最后讨论了共振拉曼光谱在SWNTs表征方面所面临的机会和挑战.
This paper describes the formation of bicomponent nanofibres from poly(vinyl alcohol) (PVA) and modified cationic starch (CS) mixed solutions (PVA/CS mass ratio 3/1) with different total concentrations of solids in water (8, 10 and 12 wt.%) via the electrospinning technique using two types of rotating electrodes (a pl…
Diphenyl-1H-Imidazole-2-Thiol ( DIT ) has been evaluated as a corrosion inhibitor for C 38 steel in 1 M HCl by gravimetric method. The effect of DIT on the corrosion rate was determined at various co ncentrations. The effect of the temperature on the corrosion behavior with addi tion of the optimal concentration of DI…