Materials Literature
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Copper oxide supported on MgO was prepared by the wet impregnation method using basic magnesium carbonate and copper nitrate. Thus, a known weight of basic magnesium carbonate was treated with a known amount of copper nitrate dissolved in the least amount of distilled water necessary to make a paste. The paste was dri…
A high-concentration ozone generator operating at atmospheric pressure was developed to produce ozone for use in fabrication of ultrathin silicon oxide films. A technique for adsorption onto silica gel, in which ozone has adsorption priority over oxygen, was adopted to obtain concentrated ozone. An ozone–oxygen mixtur…
The influence of quasihydrostatic pressure on the electrical transport in epitaxial La0.7Ca0.3MnO3/MgO(100) thin films prepared by pulsed laser deposition (PLD) and metalorganic aerosol deposition (MAD) was studied for temperatures T=4.2–300 K and magnetic fields B=0–12 T. Usual or “intrinsic” pressure effect, charact…
Low density, high modulus, and potentially improved wear resistance are the major benefits of a ferrous composite material. A BS S.156 (4%NiCrMo)gear steel reinforced with 15 vol.-% titanium diboride particles has been demonstrated for possible high performance structural applications. This composite has been produced…
Susceptibility to intergranular attack (IGA) and intergranular stress corrosion cracking (IGSCC) of Alloy 690 (UNS N06690) was investigated using chemical etching, double-loop electrochemical potentiokinetic reactivation (DL-EPR), and slow strain rate tests. Alloy 690 was solution-annealed at 1,100°C for 30 min, water…
Microwave losses due to conductivity and magnetic permeability are investigated in ${\mathrm{La}}_{0.9}{\mathrm{Ca}}_{0.1}{\mathrm{MnO}}_{3}$ films illuminated with photons in the energy range of $E=0.5--2\mathrm{eV}.$ Growth of photoinduced ferromagnetic hysteresis is observed when the magnetic field is swept between…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Cite Icon Cite Search Site Citation M. Abdul Kader, Anil K. Bhowmick; New Miscible Elastomer Blends From Acrylate Rubber and Fluorocarbon Rubbe…
Electronic structure calculations predict Ag3AuTe2 to be a small-band-gap semiconductor. Polycrystalline samples of the pure and doped materials have been synthesized, and the physical properties are reported. Thermoelectric power measurements indicate that pure Ag3AuTe2 is a p-type material with a very large room-tem…
A rigorous model of polymerization-induced phase separation (PIPS), based on the non-linear Cahn-Hilliard (C-H) and Flory-Huggins (F-H) theories combined with a second-order polymerization reaction equation, has been formulated and its solutions characterized. The model describes phase separation in system consisting…
Lamprin is a unique structural protein which forms the extracellular matrix of several cartilaginous structures found in the lamprey. Lamprin is noncollagenous in nature but shows sequence similarities to elastins and to insect structural proteins. Here, we characterize the structure and organization of lamprin genes,…
The four compounds in the series from chloro[subphthalocyaninato]boron(III) to chlo-ro[subnaphthalocyaninato]boron(III) were synthesized in a one-pot reaction. To obtain a more soluble set of compounds, the mixture was then reacted with the sodium salt of trihexylsilanol. This mixture was separated by chromatography t…
The deformation mechanism of polystyrene- block -poly(ethylene- alt -propylene) diblock copolymer having soft spherical microdomains composed of poly(ethylene- alt -propylene) block chains in a hard matrix composed of polystyrene block chains under large oscillatory shear deformation with a strain amplitude of 0.41 at…
(2000). Longitudinal and seasonal differentiation of epilithic diatom communities in the uppermost sections of two mountain spring-fed streams. SIL Proceedings, 1922-2010: Vol. 27, No. 3, pp. 1591-1595.
Abstract The submitted paper reports a study of investigation of the dynamics of yarn tension, i.e. to the time dependence of the yarn tension on large-diameter circular knitting machines (LCKM). The special feature of this study is the fact that predictions are made for the course of the yarn tension during a single…
A new poly(ester amide) derived from β-alanine, 1,12-dodecanediol, and sebacoyl chloride has been synthesized and its crystalline structure studied using transmission electron microscopy and X-ray diffraction. The polymer crystallizes according to an orthorhombic unit cell with parameters a = 4.80 Å, b = 7.58 Å, and c…
Abstract Solidification in industrial processes very often involves flow fields, high thermal gradients and high pressures: the development of a model able to describe the polymer behavior becomes complex. Recently a new equipment has been developed and improved to study the crystallization of polymers when quenched u…
Various types and parameters of nozzles in the conventional ring spinning machine diversely impact yarn hairiness, which inevitably occurs during spinning. This research attempts to reduce yarn hairiness by designing an air-suction nozzles as alternatives to the commonly used air-jet nozzle, and attaching them to a co…
A computational procedure for approximating the hysteretic relationship between pore water content and pressure head in porous bodies is described. A distribution function F is introduced that retains the features of the distribution function F of the independent domain model, but its values are obtained by partitioni…
Polarized Raman spectra of tetragonally distorted (Ba1—xSrx)TiO3/MgO ferroelectric films were obtained in special scattering geometries using a micro-Raman set-up. The underdamped E(TO) soft mode was unambiguously observed in the films with x = 0.30 and 0.45. The low-temperature behaviour of the E(TO) soft mode for x…
A two-dimensional model for solidification and secondary phase precipitation in directionally solidified superalloys is presented, which makes use of a shape function approximation for the isothermal cross-section of the primary dendrites. The phase boundary is represented by a diffuse interface on a finite difference…