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 five-year METI/NEDO’s nanoparticle project started in 2001. In this study, various nano-sized particles, e.g. Au, Ag, GaN, ZnO, FePt, CdSe, Y2O3:Eu, (Y,Gd)3Al5O12:Ce, ZnS:Mn, etc., were prepared by gas-phase methods (thermal and plasma CVD) and by liquid-phase methods (spray pyrolysis, spray drying as well as sol-…
Impact of corrosion inhibitors on environment has received increased attention in recent years. The new generation of environmental regulations requires the replacement of toxic chemicals with so-called “Green chemicals”. In the present study neem oil, castor oil and punga oil were used for corrosion inhibition evalua…
A key objective for improving titanium tanning power is increasing titanium solution stability. This is done by adjusting both the states and behaviors of the Ti(IV) species in aqueous solution to enable titanium tanning can be carried out at a suitable (high) pH. The influence of 35 organic ligands, including mono an…
The purpose of this study to investigate the effect of pyrazolo [3-4-b] pyridine on the corrosion inhibition of stainless steel in 1.0M hydrochloric acid (HCl) by using the following methods: the weight loss method, the potentiodynamic polarization methods, and the electrochemical impedance spectroscopy. It was found…
The paper reports the effect of silver impurity on photoconductive properties of seleniumtellurium glassy system. Steady state and transient photoconductivity is reported in Se-Te glassy alloy with and without silver impurity. The dark conductivity of Se70Te30 increases, while activation energy decreases with silver c…
The electronic and structural properties of CdO at high pressure have been studied by using the self-consistent tight binding linear muffin tin orbital method. The relative stabilities of CdO at high pressure in the rock salt and CsCl structures have been examined. The rock-salt structure is found to be the ground sta…
Dans les régions au climat froid, les accumulations de glace sur les isolateurs diminuent leur performance électrique, résultant parfois en contournements et pannes d'électricité. Ce problème a attiré l'attention de nombreux chercheurs et a amené à la publication de nombreux articles et rapports. On a découvert que l'…
Micromorphological properties of fourteen widely distributed paddy soils from North, Northeast, Central Plain and Eastern part of Thailand were studied. Properties differ between soils, especially texture and macro porosity. The macro porosity of topsoils of coarser-textured soils is less than in subsoils because of p…
Ti3SiC2–TiC binary-phase material was investigated with the aim of developing a new hard product. The starting material for the synthesis was prepared by compounding raw powders of Ti, Si and TiC at molar ratios of 1:1:x (x=1.8–7.0). The products were synthesized by sintering and the structures of the samples produced…
We introduce a model constitutive law for the dissipative stress tensor of lamellar phases to account for low frequency and long wavelength flows. Given the uniaxial symmetry of these phases, we argue that the dissipative stress tensor must be similar to that of nematics/smectics but with the local variable being the…
A semi empirical analysis of functionalized 3‐hexylpyrroles [3XHP, where X= Br, NH 2 , SH, CN, COOH, CONC(CH 3 ) 2 and N(CH 3 ) 2 ] having functional group attached to the hexyl substituent up to four monomeric units in head‐tail‐head‐tail regioselectivity was carried out. The energy band gap obtained at PM3 level sho…
This work demonstrates enhanced electroluminescence and quantum efficiency of a metal– Si O x – Si light-emitting diode (MOSLED) fabricated on nanocrystallite Si (nc-Si)-embedded Si O x plasma-enhanced chemical vapor deposition (PECVD) grown at high substrate temperature and threshold plasma power. Electron energy los…
The comparative study of corrosion behaviour of brasses 70Cu30Zn and 60Cu40Zn in HNO 3 solution in absence and in presence of 1-phenyl-5-mercapto-1,2,3,4-tetrazole (PMT) was studied by gravimetric and electrochemical methods. Results obtained are in good agreement and reveal that the corrosion rate depends on immersio…
Core loss of soft magnetic powder cores have been focused on to achieve high efficiency of power supplies. In this study the effects of crystal grain size on core loss were investigated by changing heat treatment conditions. It was found that core loss is influenced by crystal grain size because eddy current loss decr…
Macroporous gold films have been prepared by chemical vapor deposition using polystyrene spheres as templates. The gold films are prepared by using the CVD precursor complex [AuMe(PMe 3 )]. In order to effect the CVD at low temperature, the polystyrene spheres are seeded with palladium metal, in order to catalyze the…
Abstract Im Zuge des permanenten Bestrebens nach einer kostengünstigen Herstellung von Flachprodukten aus Stahl sowie durch den technischen Fortschritt im Bereich der Anlagentechnik, liegt ein aktueller Entwicklungstrend darin, kaltgewalzte Produkte durch warmgewalzte Produkte zu substituieren. Vorraussetzung dafür is…
Self-assembled ZnO hollow spheres and hexagonal stacking disks were synthesised by metal-organic chemical-vapour deposition. The growth process was investigated as a function of time and the sphere and disk structures were obtained in a narrow window of a near-zero oxygen partial pressure. The largest hollow sphere ha…
Composite structures based on metal open rings and thin wires are well established, for obtaining efficient negative index materials (NIM), acting as metamaterials in the long wavelength regime. The main losses are due both to metal absorption and to the inner electric resistance of metals; to overcome this latter los…
When a loom is stopped and restarted, there is often a start-up mark (stop mark) on the fabric where the local pick density deviates from the normal value. The presence and severity of the start-up marks have a direct impact on the value of the fabrics produced. The cause of start-up marks in woven fabric includes clo…
A 55 nm samarium film capped with a 10 nm palladium overlayer switched from a metallic reflecting to a semiconducting, transparent in visible state during ex-situ hydrogen loading via electrochemical means in 1 M KOH electrolytic aqueous solution at room temperature. The switching between metal to semiconductor was ac…