Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The photoluminescent (PL) properties and critical-distance measurements of phosphors excitable by vacuum UV (VUV) and UV light are reported. The highest emission intensity was found for the sample with a composition of , beyond which concentration quenching was observed. Moreover, the obtained critical distance value…
The variations of optical absorption of gold nanoshells with the shell thickness, size of the core, and core dielectric constant have been investigated by means of Mie theory. It was found that with the increase in the thickness of the shell, the strength of absorption peak increases first and then decreases. We also…
Wastewoods (logging residues) generated in Korea were used to make lignocellulosic fillers for papermaking. Lignocellulosic fillers could play great roles to increase retention efficiency and thus decrease turbidity of white water in papermaking process. In addition, lignocellulosic fillers could be used to improve ph…
3,6-Dibutylphthalonitrile (3) fused with a TTF unit was prepared and treated with lithium in n-pentanol to produce octabutyltetrakis(tetrathiafulvaleno)phthalocyanine (5).The structure of the product was determined by 1 H NMR and FAB MS.Electrochemical and optical properties of compound(5) were estimated by cyclic vol…
Die Experimente LIVE-L1 und LIVE-L3 zum Schmelzenverhalten im unteren Plenum des RDB Der Ablauf eines hypothetischen Kernschmelzunfalls in einem Reaktordruckbehälter (RDB) eines Druckwasserreaktors (DWR) beinhaltet eine große Anzahl komplexer physikalischer und chemischer Phänomene. Um das Verständnis über mögliche Ab…
Alkaline water electrolysis by using various oxides was investigated for a compact hydrogen generator. It was found that exhibits high activities to both cathode and anode reactions in water electrolysis and shows good chemical stability. The overpotential for formation is almost the same with that of Pt. Anodic overp…
This paper reports an HPLC-ESI-MS/MS investigation on the oxidation of 3,5- and 4,5- dicaffeoylquinic acid using iron(III) tetraphenylporphyrin chloride as catalyst. Two major mono-oxidised products of the quinic acid moiety have been identified for both compounds. However, only the 4,5-derivative afforded two differe…
Abstract—In this article the details of Erbium doped Fiber Amplifier (EDFA) in presence of Silicon nanocrystal (Si-Nc) is investigated. In this analysis Si-Nc and Er ions in matrix of fiber are assumed two and five levels respectively. For this structure rate equation for transient and steady state analysis is conside…
The synthesis and electrical characterization of La 1-x Sr x Mn 0.5 Cr 0.5 O 3 compounds are reported.These compounds, with perovskite structure, have been pointed out as a promising alternative for the nickel-based cermet anode of solid oxide fuel cells.Polycrystalline samples, with x = 0.3, 0.4, and 0.5, were prepar…
The bleaching performance of raw and acid activated Yola montmorillonite clay was studied. The bleaching performance was enhanced upon activation. The predominant active sites on the raw clay are Lewis acid sites, those on the improved clay are Bronsted acid sites. The best bleaching per- formance was obtained with cl…
Carbon nanotubes are a novel class of nanomaterials that have great potential in the field of biomedical research. This study investigates the cytotoxic effects of functionalized single walled carbon nanotubes (SWNTs) at different concentrations on a colon cancer cell line. Colorectal cancer cells were exposed to sing…
A novel method to one-pot-synthesize high-quality In(2)O(3)@In(2)S(3) core-shell nanoparticles, consisting of a step of reducing In(2)O(3) core surface into a layer of active indium metal in high-temperature organic solution and a step of converting this layer to In(2)S(3) using CS(2), has been developed.
Aluminum white dross is a valuable material principally due to its high metallic aluminum content. The aim of this work is to develop a method for quantitative analysis of aluminum white dross with high accuracy. Initially, the material was separated into four granulometric fractions by means of screening. Two samples…
This investigation proposes a novel, simple, and quick technique for fabricating ZnO nanoflakes and nanowire-based photodetector devices. High-density ZnO nanoflakes and nanowires were synthesized on a glass substrate by localized oxidation at a low temperature of 300 ° C . The synthesized ZnO nanoflakes and nanowires…
Conversion coating by immersion in solution including Mg(NO3)2 and/or La(NO3)3 was applied to commercial Mg alloys: AZ31, AZ61, AZ91 and AM60. The formed layer was analyzed, and the corrosion resistance of the specimen against salt water was investigated. The influences of the coating conditions on the characteristics…
Near infrared (NIR) upconverters only emit at a single visible wavelength; coating them with quantum dot multilayers allows the emission wavelength to be tuned across the visible spectrum.
Two different soot samples were produced by acetylene pyrolysis at 1100 °C using 50 000 ppmv(soot A) and 5000 ppmv (soot B) initial acetylene concentrations. Both soot samples exhibited different properties. Soot A presented a lower BET surface area, higher C/H ratio, and larger particles than soot B. At 1100 °C, soot…
Carbon layers are formed when gold oxide reacts under mild thermal conditions with molten aliphatic polymers such as polyethylene. This formation of carbon at relatively low temperature from chemically resistant polymers by addition of gold oxide to the polymers was unforeseen.
The effect on performance of a solid oxide fuel cell-micro gas turbine (SOFC-MGT) hybrid system on mixing or replacing natural gas, the normal fuel of such hybrid systems, with biomass gasified fuel (biofuel) was studied. It was found that the efficiencies of the SOFC module and of the hybrid system noticeably decreas…
Stress relaxation and viscous flow of GexSe1-x and TAS chalcogenide glasses were studied using the "bending method". Inadequacy of common models or functions to describe relaxation process of inorganic glasses were proved and the origin of an unexpected relaxation behaviour is discussed. Even if most part of the stres…