Materials Literature
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Abstract The intrinsic optical absorption spectrum of CrCl 3 has been investigated in the 0.6 to 6 eV region at temperatures from 80 to 300 °K. A careful analysis of the crystal field bands in the 0.6 to 3 eV region has revealed some structures and details, such as an Urbach's rule edge, not previously reported. The o…
Abstract The room temperature magnetic susceptibility of non‐stoichiometric GeTe has been measured; by calculating the contributions of the free carriers and the ionic lattice using the appropriate formulae and the known parameters of the system, the contribution to the susceptibility of the lattice defects has been o…
The effects of interstitial nitrogen on the hardening produced in mild steels by irradiation at 50° C (323 K) to doses up to 2·6 × 1018 n/cm2 (fission) have been investigated. These studies were performed using annealed silicon-killed steel with a finite concentration of nitrogen in solution, annealed silicon-killed s…
In this present work, the effect of stacking sequence on mechanical properties of untreated luffa cylindrica and glass fibre reinforced epoxy hybrid composites has been investigated experimentally. Composite laminates were fabricated by hand lay-up technique. All the composites were made with a total of 4 plies, by va…
In , the anodic dissolution of titanium carbide begins at about 0.8V ( SHE ). Trivalent titanium ions could not be detected in the nitrogen‐ saturated solution, although this does not rule out the possibility that Ti(III) is formed in the dissolution reaction. However, at 0.8V oxidation to Ti(IV) would readily occur.…
The sensitivity of certain local medicinal herbs was evaluated against pathogenic Aeromonas hydrophila, Pseudomonas fluorescens and Edwardsiella tarda bacteria of fish during the period from April 2001 to March 2002. A suspension of freshly cultured experimental bacteria (2 x 107 CFU / ml) was prepared and 0.1 ml of t…
Research Article| February 01, 1970 Experimental Devitrification Rate of Rhyolite Glass GARY LOFGREN GARY LOFGREN Geology Branch TH2, NASA Manned Spacecraft Center, Houston, Texas 77058 Search for other works by this author on: GSW Google Scholar Author and Article Information GARY LOFGREN Geology Branch TH2, NASA Man…
The magnitude of the extinction coefficient and the shift on substitution show that the band at 16,200 cm–1 in the absorption spectrum of Fe(C5H5)2+, which formerly was attributed to a 3d–3d ligand-field transition, is due to a ligand-to-metal e1u→e2g charge-transfer transition.
Various barium orthoferrates over wide Fe 4+ concentrations were prepared and their magnetic properties were investigated. The hexagonal phase with large Fe 4+ concentration is ferromagnetic above the anomaly point. With increasing Fe 3+ , it tends to be antiferromagnetic. The cubictetragonal phases are paramagnetic w…
In our work we studied composites of poly(lactic) acid (PLA) and low density polyethylene filled with cellulose fibres. The studied composite materials were manufactured with a twin-screw extruder. The extruded compound was processed in to samples using compression moulding. The content of cellulose in polymer/cellulo…
Abstract The electronic band structures of PbS, PbSe, and PbTe have been calculated using the relativistic Green's function method. The choice of a relativistic atomic potential for Pb and of nonrelativistic atomic potentials for S, Se, and Te inthe muffin‐tin spheres results in similar band models for the lead salts.…
Attention is directed to the uncertain state-of-affairs surrounding the influence of plastic deformation on concommitant tracer-diffusivity in metals. We now offer some clarification of this elusive solid-state transport problem.It is concluded that strain-enhanced diffusion is a real phenomenon, and in fact, it can b…
For Environmental concern on synthetic fibers (such as glass, carbon, ceramic fibers, etc.) natural fibers such as flax, hemp, jute, kenaf, etc. are widely used. In this research work, jute fiber reinforced polypropylene matrix composites have been developed by hot compression molding technique with varying process pa…
Abstract We hope that the preceding presentation has made it clear that the glass transition is not a simple phenomenon, but a very complicated process which is still not understood in all of its ramifications. The nature of the glass transition temperature ( T g ), to begin with, has been the source cf considerable c…
Fundamental equations of the theory of elasticity of an anisotropic body the refined theories of anisotropic plates determination of the stress state and the strains of plates some problems of vibrations and stability of plates some estimates of the refined theories.
Evaluation of fabrication procedures and operating life have indicated that moisture can play a major role in determining the performance of nematic liquid crystal displays based on the dynamic scattering mode (DSM) in anisylidene-p-aminophenyl-acetate. There is strong evidence that the presence of moisture promotes e…
Resistivity change as a function of electron irradiation near 8 °K and of annealing after irradiation has been measured on zirconium. Damage rates were measured as a function of incident electron energy from 0.70 to 1.9 MeV. A value of 24 eV for the displacement threshold energy was determined by extrapolation of the…
The electrochemical oxidation of guanine at the pyrolytic graphite electrode was investigated by linear and cyclic scan voltammetry between p H 0–12.5 and by controlled electrode potential electrolysis in aqueous 1M acetic acid solution. Guanine is oxidized by an initial potential determining attack at the double bond…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation D. L. Raimondi, E. Kay; High Resistivity Transparent ZnO Thin Films. Journal of Vacuum Science an…
Preferential anodic dissolution of Zn from brass is examined from the point of view of the volume diffusion mechanism. Results from x‐ray investigations of partially dissolved γ‐brass (Cu 65 a/o (atomic per cent) Zn) and η‐brass [Cu 86 a/o Zn] specimens show the appearance of new, more Cu‐rich, intermediate and termin…