Materials Literature
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The study of the size evolution of CdS nanoparticles in aqueous dispersion is presented in this paper. The sodium citrate was employed as stabilizer of CdS nanoparticles synthesized by microwave assisted synthesis. Analysis of this study was carried out by UV-Vis spectrophotometry, by comparison of the band gap energy…
The aim of this study was to investigate the possible impact of silver nanoparticles (Ag-NPs) on reproduction and development of different model organisms, such as sea urchins, barnacles, brine shrimps and zebrafish. In vivo toxicological tests were performed; the biological models were exposed to serial dilutions of…
There are a number of liquid processes and waste streams at nuclear facilities (i.e. nuclear power plants, fuel reprocessing plants, nuclear research centers, etc.) that require treatment for process chemistry control reasons and/or the removal of radioactive contaminants. These processes may be for reactor primary co…
Manufactured nanomaterials (MNMs) from the rapidly increasing number of consumer products that contain MNMs are being discharged into waste streams. Increasing evidence suggests that several classes of MNMs may accumulate in sludge derived from wastewater treatment and ultimately in soil following land application as…
The inhibitive effect of bisbenzimidazole compound 1, 4-bis (benzimidazolyl)benzene (BBMB) on the corrosion of mild steel in 0.5 M HCl and 0.25 M H2SO4 solutions was investigated employing weight loss, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization curves methods. The results show that B…
The azo derivative namely 4-(phenyldiazenyl)phenyl 2-furoate (PPF), was obtained by an esterification reaction between 4-(phenyldiazenyl)phenol and 2-furoyl chloride in pyridine. The dye was characterized using elemental analysis, nuclear magnetic resonance (1H and 13C) and mass spectrometry with electro-spray ionizat…
Fundamentals of yarn winding explains principles related to yarn winding relevant even to the latest generation of winding systems. The book discusses various parameters related to build up of winding packages, their influence on package performance and optimisation according to end-user yarn tensioning and clearing d…
This paper presents results from the continued application of a new technique for the remote, on-line partial discharge (OLPD) testing and monitoring of in-service, high voltage (HV) Ex/Atex motors operating in hazardous gas zones. The technique employs high current, wideband, high frequency current transformer (HFCT)…
The spectroscopic methods of the different regions of the Electromagnetic spectrum are the most powerful and useful techniques available for the understanding of molecular structure, nature of bonding between atoms, confirmation analysis, symmetry of molecules, ions in crystals and so forth. The high resolution IR spe…
鞣质的酸通常被看作 polyphenolic 污染物质之一，它可以引起严重威胁到环境。在这研究， polyaniline 吸附物被化学氧化综合在水的答案移开鞣质的酸。与溶液和强壮的吸附的 pH 极大地改变的鞣质的酸的吸附数量在 pH 5.86.7。共存的阳离子例如 Na+ ， K+ ，和 Ca2+ ，能在 polyaniline 上提高鞣质的酸的吸附，它可以被贡献在鞣质的酸和 polyaniline 之间的静电的相互作用。吸附过程能被兰米尔模型很好描述，最大的吸附能力是 117.65 mg 据敲獡獥漠 ? 敭湡丠獵敳瑬渠浵敢 ? 映楲瑣潩 ? 慦瑣牯愠摮琠敨浲污瀠牥潦浲湡散 ? 湩琠敨琠'T? 煥極灰摥眠瑩 ? 潣扭湩摥搠癥捩獥…
Controlling the wettability of solid surfaces is an important issue that has aroused the increasing interest from both fundamental and practical perspective by tailoring surface morphology and surface chemical compositions. The underlying theories for interpreting wetting phenomena still mainly focus on the Young's eq…
基于密度泛函理论第一性原理系统研究了BN链掺杂石墨烯纳米带(GNRs)的电学及磁学特性, 对锯齿型石墨烯纳米带(ZGNRs)分非磁态(NM)、反铁磁态(AFM)及铁磁性(FM)三种情况分别进行考虑. 重点研究了单个BN链掺杂的位置效应. 计算发现: BN链掺杂扶手椅型石墨烯纳米带(AGNRs) 能使带隙增加, 不同位置的掺杂, 能使其成为带隙丰富的半导体. BN链掺杂非磁态ZGNR的不同位置, 其金属性均降低, 并能出现准金属的情况; BN链掺杂反铁磁态ZGNR, 能使其从半导体变为金属或半金属(half-metal), 这取决于掺杂的位置; BN链掺杂铁磁态ZGNR, 其金属性保持不变, 与掺杂位置无关. 这些结果表明: BN链…
Metal rubber (MR) is a new-type damping material with special raw material and manufacturing process. The helix wire is considered as the geometric unit of MR. The thermal expansion model of the MR is established based on the thermal expansion analyses of micro-springs in different contact states with the Schapery mod…
The Faraday rotation in metallic nanoparticles is considered based on a quantum model for the dielectric function epsilon(ω) in the presence of a DC magnetic field B. We focus on effects in epsilon(ω) due to interband transitions (IBTs), which are important in the blue and ultraviolet for noble metals used in plasmoni…
Recent studies have shown that focusing on industrial waste materials will enable us to recover the economical values. In line with the objective of present study, walnut shell is a waste material was selected to ensure economic recovery. Furthermore, biaxial fiber glass based fabrics were used in order to improve the…
Using first-principles calculations based on density functional theory and projector augmented wave method, we investigate the geometric structures, magnetic properties and electronic structures of h-BN monolayer with nitrogen vacancy (VN), nitrogen substituted by oxygen (ON) or sulfur (SN). The results show that the…
Streamer inception and propagation criteria are used for evaluations of ac breakdown voltages of sphere-sphere gaps employing a dielectric barrier in dry air. For such an arrangement, an optimal location of the barrier is expected to exist providing maximum value of the breakdown voltage. To reproduce the barrier effe…
In order to understand how exact Goss-oriented grains form in electrical steel, we studied Goss orientation and microstructure during primary recrystallization using electron back-scattered diffraction. In particular, we examined the effect of heating rate (20°C/s and 150°C/s) on the primary recrystallization behavior…
Channel segregation behavior of a lateral directional Sn-20mass%Bi ingots was examined by X-ray computing tomography (X-ray CT) and three-dimensional numerical analysis. The channel segregation with string shape from near the cold wall side was observed by the X-ray CT and those segregation patterns could be reproduce…
In the present study the corrosion behavior of AISI 316L stainless steel samples, taken from different parts of the ship pipeline, were investigated in chloride solutions. Research was conducted using gravimetric tests in 6 wt.% ferric chloride solution as well as cyclic potentiodynamic polarization measurements in 0.…