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 UV–visible and near-IR spectra of the zinc phthalocyanine π-cation and π-anion radicals, [ZnPc(–1)] •+ and [ZnPc(–3)] •– , are investigated by time-dependent density functional theory (TDDFT) calculations using the pure, asymptotically correct, statistical average of (model) orbital potentials (SAOP) functional. T…
We propose a new concept of hydrogen generator testing for on-site small engine. In general, there is a trade-off between simpler vehicle design and infrastructure issues, for instance, liquid fuels such as gasoline and methanol for small engine use. In this article we compare the hydrogen gases combination the gasoli…
Interaction between dislocation and divalent impurity has been investigated in KBr single crystals doped with various impurities by strain rate cycling tests under ultrasonic oscillation. The interaction energy between dislocation and impurity-vacancy dipole (I-V dipole) has been obtained by fitting Barnett model to e…
BACKGROUND: recent studies in bio-engineering have showed the influence of Polyelectrolyte Multilayer (PEM) films on endothelial cells (ECs), especially poly(sodium-4-styrene-sulfonate) (PSS) and poly(allylamine hydrochloride) (PAH). They were tested either with human mature ECs or rabbit immature endothelial progenit…
We have made systematic studies on the ultraviolet-blue photoluminescence (PL) from Ge nanocrystals (NCs) grown embedded in SiO2 matrix. Embedded Ge NCs are grown by two different methods, namely, radio-frequency magnetron sputtering (SPT) and ion implantation (IMP). For comparison, Ar implanted SiO2 layer was process…
The helium-cooled plate-type divertor concept proposed by Malang was designed to accommodate a surface heat load of ˜10 MW/m2. This design can potentially reduce the number of modules needed for the divertor by over two orders of magnitude compared with other concepts, thereby significantly reducing coolant delivery s…
Premature failure of XLPE cables can occur due to water trees increased the susceptibility of polyethylene insulation to breakdown, and extensive studies have been made to improve the resistance of polyethylene to water treeing in the past. In this study, we investigated the influence of the incorporation of silica na…
The fuel cell/gas-turbine hybrid power systems can utilize exhaust fuel and waste heat from fuel cells to increase the system efficiency. This paper considers an internally reforming solid oxide fuel cell/gas turbine (SOFC/GT) hybrid system, where the anode exhaust, which contains the remainder of the fuel, is mixed w…
In view of the important need to generate well-dispersed inorganic nanostructures in various solvents, we have explored the dispersion of nanostructures of metal oxides such as TiO2, Fe3O4 and ZnO in solvents of differing polarity in the presence of several surfactants. The solvents used are water, dimethylformamide (…
Hydrogen-fuelled vehicles require a cost-effective, lightweight material with precisely targeted thermodynamics and fast kinetics of hydrogen release. Since none of the conventional metal hydrides satisfy the multitude of requirements for a practical H 2 storage system, recent research efforts have turned to advanced…
Based on the theory of irreversible thermodynamics, the present work proposes a dislocation-based model to describe the plastic deformation of FCC metals over wide ranges of strain rates. The stress-strain behaviour and the evolution of the average dislocation density are derived. It is found that there is a transitio…
Many pyrotechnic devices contain barium nitrate which is used as an oxidizer and colouring agent primarily for green-coloured fireworks.Similarly, strontium nitrate is used for red-coloured pyrotechnic effects.Due to their chemical similarities to radium, barium and strontium ores can accumulate radium, causing a rema…
We report a study on the structural modifications induced in amorphous silicon dioxide ( a -SiO 2 ) by electron irradiation in the dose range from 1.2·10 3 to 5·10 6 kGy. This study has been performed by investigating the properties of the 29 Si hyperfine structure of the E ' γ center by electron paramagnetic resonanc…
We examine the morphometric, chemical, and physical properties of adult shells from breeding populations of Cornu aspersum maxima (Taylor, 1883), Cornu aspersum aspersum (Müller, 1774), and Helix pomatia (Linnaeus, 1758). The higher thermal requirements of the African subspecies C. aspersum maxima were confirmed by th…
Looseness is a very troublesome issue regarding the structure of leather as well as the final leather product. It is a great concern to tanners who will go to great lengths to address it by adding different chemicals. However, its fine structure and effects on the mechanical properties are not fully understood. This i…
The inhibitive effect of cetyl trimethylammonium bromide (CTAB) on acid corrosion of mild steel in sulphuric acid at different temperatures has been investigated. Galvanostatic and potentiostatic studies were performed to determine the corrosion current, inhibition efficiency, passivation current and passivation poten…
The study in this paper investigates whether the air gap harmonics can be identified by using an external search coil placed on the frame of an induction motor. For this purpose the study focuses on the prediction of rotor speed of an induction motor from external search coil emf, using spectral analysis techniques. I…
Space charge distributions were investigated in two-layer dielectric films consisting of certain combinations of low-density polyethylene (LDPE) and its nanocomposite with magnesia nanofillers at DC electric fields of 25 kV/mm and 100 kV/mm at room temperature. Space charge is formed at the interface of two different…
Degradation of mechanical properties due to nanometric irradiation induced defects is one of the challenging issues in designing materials for future fusion reactors. Various types of defects such as voids and He bubbles may be produced due to high dose of neutron irradiation due to fusion reaction. We study the influ…
On the basis of the concepts of an intermediate-valence (IV) regime, an analysis is carried out of macroscopic properties of the α and δ phases of plutonium, as well as of several model systems based on rare earth elements. Within a single-site approximation (SSA), the characteristic Kondo interaction energy, the f-el…