Materials Literature
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Abstract Stabilization of ZnO photoanodes was investigated using ZnO thin film electrodes under controlled potential in various pH solutions; the effects of light intensity and agitation were also studied. The photocorrosion of ZnO photoanodes was suppressed at sufficiently cathodic potentials and/or at low light inte…
The obtaining of the representative matrices of the I icosahedral rotation group by means of the descent symmetry from the K group of rotations of the sphere.
Thermal Conductivity of CuSbSe2 and CuBiSe2 have been studied in the solid and liquid state in a wide range of temperatures. Measurements of thermal conductivity were carried out using the concentric cylinder method which is based on the flow of heat through a cylindrical wall.
Abstract Reactions between hydrogen chloride, HCl, and either hydrocerussite, 2PbCO 3 . Pb(OH) 2 , or an orthophthalate of lead suspended in di(2‐ethylhexyl)phthalate, DOP, at 180°C are discussed as models of what should happen during the stabilization of PVC if thermal dehydrochlorination were to yield HCl. There is…
Abstract Small‐angle neutron scattering (SANS) is a useful technique for investigating the anisotropy of density fluctuations when these have single orientation direction. The commonly used method for treating asymmetric SANS data is to analyze sectors of data parallel and perpendicular to the orientation axis. Other…
Stress corrosion cracking (SCC) of zircaloy cladding is generally believed to be the major failure mode of current nuclear fuel in light water reactors. Iodine, an abundant fission product, has been identified to possibly cause zircaloy to become susceptible to SCC. An understanding of the kinetics of the reaction bet…
An application of the EPR method to investigation of the ferroelastic domain structure is presented. The relations between the symmetry elements of the high temperature and the ferroelastic phases have been described in the case of EPR of Cr3+ admixture ions in KSc(MoO4)2 and KH3 (SeO3)2.
The purpose of this report is to document work done on the development of calcium lanthanum sulfide (CaLa2S4) as an infrared (IR) dome material for use in the 8- to 12-micrometer region.
Abstract The MM2 force field has been extended so that calculations may be carried out on siloxanes. The parameters chosen give a good fit to available experimental data.
Glasses in the calcium alumino/galliosilicate system were prepared. All glasses contained 30 mol% CaO. The density, refractive index, and infrared spectra were measured. These glasses exhibited additive behavior in all properties, which implies that Al and Ga play isostructural roles in the glass network. These result…
Abstract Erstmals wurde farbloses Li 3 BiO 3 dargestellt, das triklin, P 1 , mit a 902,38(35) pm, b = 973,02(48) pm, c = 923,53(46) pm, α = 114,069(38)°, β = 89,291(36)°, γ = 107,504(35)°, Z = 8 kristallisiert. Die Parameter wurden nach “least squares” (3565 von 3969 I° (hkl)) verfeinert, R = 7, 86%, R w = 6,93%, Mok…
<div class="htmlview paragraph">A study was conducted to determine the feasibility, performance, and emissions of a Detroit Diesel Corporation 8V-71 transit bus engine using ignition-improved methanol as fuel. Major objectives to be achieved by the study were: 1) to determine the minimum amount of ignition impro…
Abstract The adsorption of a mixture of cationic (c) and anionic (a) surfactants on cellulose fibers is highly dependent on the molar ratio a/c with a maximum at a/c = 0.9. When a/c is > 1.1 the adsorption is negligible. The presence of nonionic surfactants in the solution impairs the adsorption of the ionic specie…
The properties of soda-lime aluminosilicate glasses have been measured for several series of glasses containing a constant silica content, with varying ratios of soda to lime and of modifier oxides to alumina. The results demonstrate that a systematic variation in the effect of modifier ions occurs as lime replaces so…
Abstract Four soils with sandy/loamy boundaries occurring at various depths were studied with respect to distribution of clay‐sized minerals within the soil matrix. Mineralogy of coarse and fine clay was determined by horizon using x‐ray diffraction. Also, mineralogy of clay from ped interiors vs. exteriors (coatings)…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNature of porphyrins in kerogen. Evidence of entrapped etioporphyrin speciesAssem O. Barakat and Teh Fu YenCite this: Energy Fuels 1989, 3, 5, 613–616Publication Date (Print):September 1, 1989Publication History Published online1 May 2002Published inissue 1 September 1989htt…
Abstract Polycarbonate (PC) is considered to be a proper resin for optical memory disk, however PC resin shows high birefringence. It is very important to reduce birefringence of PC optical memory disk. This research is to obtain the relationship between birefringence and process conditions and to get the optimum cond…
Length, extensibility, and absolute strength of umbilical cords were determined in litters of pigs at term. Length was also determined in fetuses earlier in gestation and in hypophysectomized fetuses. Mean cord length at term was 34.6 cm (range, 17 to 50 cm) and its length was correlated with length and birth weight o…
Abstract Resonance excitation profiles have been obtained for cobalt phthalecyanine at both room temperature and 10 K using a compressed disc of silver and the phthalocyanine. Low‐frequency vibrations are shown to be influenced mainly by displacements on the bonding nitrogen, but high‐frequency vibrations show a more…
Abstract Gypsum crystals were grown at 25, 35, and 45 °C from solutions containing different ionic impurities (Mg 2+ , Na + , Cd 2+ ). Curved gypsum crystals formed from the solutions enriched in magnesium or cadmium, whereas, in the presence of sodium, gypsum always grew undeformed. The mechanism of the curvature is…