Materials Literature
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A free radical produced by 60Co- γ irradiation in single crystals of 4-nitropyridine N-oxide, C5H4N2O3, has been observed and analyzed for different orientations of the crystal in the magnetic field at the temperature between 120 and 450 K, using an Electron Paramagnetic Resonance (EPR) technique. The spectra were fou…
Populations of the delicate planktonie freshwater centric diatom genus Urosolenia from several lentic freshwater environments in Africa, Asia, Australia and South America were studied with both LM and SEM. The classical morphological features, e.g. frustule size, shape of the valve, length and positioning of the proce…
Magnesium oxide (MgO) nanowire arrays, nanoribbons, two- and three-dimensional network like nanostructures were prepared by the simple thermal evaporation of Mg powder with and without using catalyst at a relatively low temperature. The non-catalytic approaches favor the formation of network like nanoforms whereas the…
Partial discharges (PD) in the insulation of power equipment have been a focal point in the field of electrical technology. Numerical simulation of PD is an important approach to knowing the PD mechanics. In this paper, the physical model of PD in voids was modified and the simulation circuit of PD in voids was built…
We have studied the phase sequence and physical properties of an asymmetric bent-core material with a chiral rigid cholesteryl moiety, and a flexible achiral alkyl side chain at the other end. The combination of the achiral bent core with the chiral cholesteryl unit results in properties different from those of both t…
This study aims to investigate a recycling alternative for a crosslinked ethylene-vinyl acetate (EVA-c) copolymer (75 wt% of gel content) from the shoe industry through mixing with virgin and recycled polyethylenes. The Drais equipment, an ultra-high-speed thermo-kinetic mixing and compounding system specifically deve…
Two-dimensional numerical simulations were performed to derive design rules for low-cost, high-efficiency interdigitated back contact (IBC) solar cells on a low-cost substrate. The IBC solar cells were designed to be fabricated using either the conventional screen printing or photolithography metallization processes.…
Carbide‐derived carbon (CDC) films are produced at atmospheric pressure on the surfaces of carbide‐based ceramic materials and coatings by a high‐temperature chlorination process. These nanoporous carbon films contain carbon nano‐onions and amorphous carbon, and may contain nanocrystalline diamond and graphite as well…
Several low atomic number materials as beryllium, polyimide or hydrocarbon can be suitable as an ablator for high energy class lasers. On CEA Laser “Megajoule” (LMJ) facility, amorphous hydrogenated carbon (a-C:H or CHx), is the nominal ablator used to realize inertial confinement fusion (ICF) experiments. These capsu…
ABSTRACT Dry‐grind corn processing facilities produce ethanol, carbon dioxide, and distillers dried grains with solubles (DDGS). To produce DDGS, dry‐grind corn processors concentrate thin stillage in multieffect evaporators. Concentration of thin stillage uses large amounts of energy, and efficient operation is impor…
We review the advances made in understanding the mechanism of catalyzed carbon nanotube growth, with the main focus on direct dynamics and molecular dynamics studies of single-walled carbon nanotube (SWNT) growth. These studies have deepened our understanding of the catalytic SWNT nucleation and growth mechanisms, but…
Abstract Chemical bath deposition has been introduced as a means to produce films of inorganic substances with low engineering expenditure and close to ambient temperature. Organic additives have been used to control the growth of zinc oxide particles in solution and prevent the formation of the typical rod-like morph…
We have studied experimentally the effects of variable Na 2 O concentrations on the solubility of four metals (Fe, Co, Ni, and Pd) in silicate melts of anorthite-diopside eutectic composition. Experiments were done at fixed temperatures of 1300 °C for Pd and 1400 °C for Ni, Co, and Fe. In the Fe solubility experiments…
R67 dihydrofolate reductase (DHFR) is a novel homotetrameric protein that possesses 222 symmetry and a single, voluminous active site pore. This symmetry poses numerous limitations on catalysis; for example, two dihydrofolate (DHF) molecules or two NADPH molecules, or one substrate plus one cofactor can bind. Only the…
Six different membranes previously prepared by the authors by graft copolymerization of acrylic acid (AA) and 2‐hydroxyethylmethacrylate (HEMA) onto chitosan were characterized. The graft copolymerization of the vinyl monomers onto chitosan was confirmed by FTIR and DMTA. The chitosan used was also characterized by DM…
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Purpose To establish a method of transforming the 3D cutting patterns constructed and modelled into 2D patterns, excluding the fabric parameters. Design/methodology/approach Three methods have been developed for transforming 3D cutting part segments into 2D segments. They are based on the computer‐based application of…
A large-scale, high-resolution finite element methodology for thermomechanical analysis of complex engine components has been developed. This paper describes the process and presents an example evaluation of an engine cylinder head. Because of its non-symmetric configuration, the cylinder head was entirely modelled. T…
Purpose In this paper, the main aim is to study the synergistic effects of alkanethiols upon inhibition of Schiff bases, N , N ′‐ethylen‐bis and N , N ′‐ ortho ‐phenylen‐bis in 0.5 M sulphuric acid solutions. Design/methodology/approach Measurements were carried out in a three‐electrode cell assembly connected to the…
Abstract— The C K edge of Orgueil nanodiamonds (Cδ diamonds) was acquired by electron energy-loss spectroscopy (EELS), with an energy resolution of 300 meV. The spectra show peaks at 282.5, 284.7, and 286.4 eV, which occur in the band gap below the main diamond edge and are absent from the bulk diamond spectrum. These…