Materials Literature
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The x-ray induced photoemission measurements made at AFCRL have been used as a basis for comparison to the computed results of the POEM Monte Carlo electron transport code. The results show spectral shapes which closely resemble the experimental data and absolute yield values which agree within 15-27%. The measurement…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAdvances in Polyurethane Coatings (1969 to Early 1972)Wen-Hsuan Chang, Rogers L. Scriven, John R. Peffer, and Samuel Porter Jr.Cite this: Ind. Eng. Chem. Prod. Res. Dev. 1973, 12, 4, 278–288Publication Date (Print):December 1, 1973Publication History Published online1 May 20…
Abstract The oxidation of sodium thiosulfate with ozone in an aqueous solution was investigated as a part of a series of studies on the chemical behavior of such low-valence sulfur compounds as thiosulfate and sulfite. The ozone oxidation was carried out by blowing a mixed gas of ozone and oxygen continuously into a 0…
Response and geometrical factor of a charged particle energy spectrometer are presented. Both a theoretical and an experimental approach are used. A set of two annular curved deflection plates constitutes the energy analyzer of the spectrometer. The analyzer has the features of large geometrical factor, high angular a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMass spectrographic determination of hydrogen thermally evolved from uranium and uranium alloysG. L. Powell and J. B. CondonCite this: Anal. Chem. 1973, 45, 14, 2349–2354Publication Date (Print):December 1, 1973Publication History Published online1 May 2002Published inissue…
On a effectué des expériences de fluage à, haute température sur des monocristaux de magnésium sollicités en compression suivant l'axe c. L'examen des échantillons déformés en microscopie électronique révèle que la déformation du cristal est due à, la montée pure de dislocations de vecteur de Burgers c situées dans le…
High-temperature X-ray diffraction methods have been used to determine unit-cell parameters of two boron carbide compositions from 12° to about 940°C. One composition was at the carbon-rich end of the phase field (i.e. B4C), the second at the boron-rich end (5 at. % C by chemical analysis). The lattice expansion of bo…
Even-tempered atomic orbital bases are formulated which have the property that atomic orbital scaling can be closely simulated through variation of linear expansion coefficients. This ``adaptation to pseudoscaling'' involves two types of adjustments: (1) Optimal orbital exponents and basis sizes are determined for the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural and magnetic characterization of .mu.-hydroxobis[pentaamminechromium(III)] chloride monohydrate, the acid rhodo chloride complexJack T. Veal, David Y. Jeter, Judith C. Hempel, Richard P. Eckberg, William E. Hatfield, and Derek J. HodgsonCite this: Inorg. Chem. 197…
The power loss and flux distribution in two commercial T-joints have been compared. The simple 45°-90° T-joint and the slightly more complex 45° offset T-joint were chosen for the investigation, as they are the most common joints currently used in power transformers. The localized and overall power loss of each joint…
The thermoelectric power and resistivity of annealed copper films have been measured. From the thermoelectric power values at the minimum in resistivity and the corresponding temperature coefficient of resistance, the calculated values of the energy dependence of the mean free path of conduction electrons and the Ferm…
Subsolidus equilibria along the CaMgSiO.-Mg,SiOn olivine join are governed by partial immiscibility between the end-member phases. The solvi bounding the two-phase region are determined over the temperature range 800-1300'C at 2, 5, and 10 kbar. Within the limits of experimental error, the two-phase data are symmetric…
(1973). Relation between physical and chemical processes on semiconductor surfaces. C R C Critical Reviews in Solid State Sciences: Vol. 4, No. 1-4, pp. 515-539.
We report a study of the morphology and kinetics of crystallization of films of a-Se vapor deposited on mica substrates. Morphological examination was facilitated by the complete dissolution of the amorphous component of the films by CS2, while the crystalline component was left essentially intact. Crystallization beg…
Abstract Crystalline citrate synthase (citrate oxalacetate lyase (coenzyme A-acetylating) EC 4.1.3.7) has been prepared from rat kidney and rat brain. These enzymes are homogeneous as judged by acrylamide gel electrophoresis, and immunologically identical with the rat heart citrate synthase. Steady state kinetic studi…
Changes occurring in the chemical state, and the crystallographic and electronic structure of LaCoO3 in a reducing atmosphere were determined. These determinations involved the use of thermogravimetric and calorimetric techniques, x-ray diffraction, and magnetic property measurements. It was shown that the reduction p…
Skew scattering by magnetic impurities in dilute magnetic alloys induces an extraordinary Hall effect which has now been observed in many systems. The author calculates the extraordinary Hall effect induced by cerium impurities for which the conduction electron-impurity interaction is mainly due to resonant scattering…
A molecular theory for distortional plasticity is described based on thermally activated production of molecular kink pairs which incrementally align short molecular segments and thereby produce strain. The process of crazing is described as a micromechanical problem of elastic-plastic expansion of initially stable mi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal and molecular structure of a new hexamolybdate-cyclophosphazene complexH. R. Allcock, E. C. Bissell, and E. T. ShawlCite this: Inorg. Chem. 1973, 12, 12, 2963–2968Publication Date (Print):December 1, 1973Publication History Published online1 May 2002Published inissue…
The range of the intrinsic nonstoichiometry in lead zirconate-titanate at 1100 °C has been established independently by two gravimetric techniques. A modified Knudsen effusion experiment allowed for an extended interpretation of the vapor pressure data. A single experiment was used to determine the width of any Pb1−x…