Materials Literature
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The first member of a new family of materials for nonlinear optics, methyl- (2,4-dinitrophenyl) -amino-2 propanoate (MAP), has been prepared and its linear and nonlinear optical properties have been investigated. High nonlinear coefficients result from the favorable electronic properties of the MAP molecule, as well a…
Scattering from a multielectron target by a heavy particle is approximated in terms of amplitudes for scattering from individual target electrons. By treating the motion of the projectile classically and ignoring correlations, the wave function for the system is expressed as a product of single-electron wave functions…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEquilibrium Data for Wet-Air Oxidation. Water Content and Thermodynamic Properties of Saturated Combustion GasesRobert A. Heidemann and John M. PrausnitzCite this: Ind. Eng. Chem. Proc. Des. Dev. 1977, 16, 3, 375–381Publication Date (Print):July 1, 1977Publication History Pu…
The spin-reorientation phase transition in SmCr${\mathrm{O}}_{3}$ at $T\ensuremath{\simeq}33\ifmmode^\circ\else\textdegree\fi{}$K is studied using acoustic-velocity and specific-heat measurements. Although the reorientation occurs within a narrow temperature region (\ensuremath{\sim} 1\ifmmode^\circ\else\textdegree\fi…
Ellipsometric measurements have been performed at room temperature on arc-evaporated carbon films between 0.6 and 3.8 eV. Previously published data on evaporated carbon films are reviewed and a comparison made between the present data and those for glassy carbon over the same energy range.
The electrochemical behavior of the magnesium electrode in thionyl chloride (TC) solutions was studied. It was found that this electrode is covered by a passivating layer which consists of some insoluble magnesium salt, probably . The properties of this layer determine the chemical and electrochemical behavior of the…
A study was made to determine whether a magnetic field, such as that associated with a thermonuclear reactor, might adversely affect the corrosion behavior of metallic surfaces in contact with a flowing electrolyte. In metal/ flowing‐electrolyte systems, electrochemical reactions dependent on the metal/ electrolyte in…
Abstract Chemical and physical properties of the clay mineral nontronite were studied as the oxidation state of structural iron was altered. Magnesium exchange capacities (CEC) were determined for different nontronite samples that were unaltered, dithionite‐reduced, and reduced‐reoxidized, and were compared to predict…
The L-(+)-lactate dehydrogenase (L-lactate:NAD+ oxidoreductase, EC 1.1.1.27) of Streptococcus lactis C10, like that of other streptococci, was activated by fructose 1,6-diphosphate (FDP). The enzyme showed some activity in the absence of FDP, with a pH optimum of 8.2; FDP decreased the Km for both pyruvate and reduced…
Specific-heat data (at zero field and 15.6 kV/cm), dielectric data, and electrocaloric data measured on a KTa${\mathrm{O}}_{3}$ crystal between 2 and 25 K are reported. The zero-field specific heat is about 30 times larger than the Debye prediction (${\ensuremath{\Theta}}_{D}=580$ K) at these temperatures but shows no…
The effect of pH changes and the presence of ligands on the uptake of lead and cadmium ions by three types of clay mineral (kaolinite, illite and montmorillonite) has been investigated.     In the absence of ligands, metal ion adsorption increases gradually with increasing pH until a thresho…
The melting, eutectic, peritectic, solidus, and liquidus temperatures in the system Zr‐O have been measured directly by a simple optical pyrometric technique requiring only a few hundred milligrams of sample. The saturation solubility of oxygen in α‐Zr( s ) between 1270° and 1980°C and the lower phase boundary of the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEquilibrium Cyclic Oligomer Formation in the Anionic Polymerization of iε-CaprolactoneKoichi Ito, Yutaka Hashizuka, and Yuya YamashitaCite this: Macromolecules 1977, 10, 4, 821–824Publication Date (Print):July 1, 1977Publication History Published online1 May 2002Published in…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of Poly[(amino acid alkyl ester)phosphazenes]H. R. Allcock, T. J. Fuller, D. P. Mack, K. Matsumura, and Karen M. SmeltzCite this: Macromolecules 1977, 10, 4, 824–830Publication Date (Print):July 1, 1977Publication History Published online1 May 2002Published inissue…
For pt.I see ibid., vol.6, p.180 (1976). The resonant model potential theory of a d band metal discussed by the author previously is used to calculate the total energy and its structural dependence. Only completely full or empty d band metals are considered; for these metals, the Harrison Gamma / mod E d -E F mod expa…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTX-ray photoelectron/Auger electron spectroscopic studies of tin and indium metal foils and oxidesAlbert W. C. Lin, Neal R. Armstrong, and Theodore. KuwanaCite this: Anal. Chem. 1977, 49, 8, 1228–1235Publication Date (Print):July 1, 1977Publication History Published online1 M…
Statistical variation of pitting potential and induction time for pit generation has been studied based on a stochastic theory which had been developed for the fracture of solid materials caused by applied stress. In order to obtain a large number of data, a multichannel pitting corrosion testing apparatus was develop…
Nonradiative decay of excited rare-earth ions by multiphonon emission has been investigated in a series of oxide glasses. Various rare-earth electronic levels were selectively excited by short-duration laser pulses and multiphonon relaxation rates were determined from measurements of fluorescence rise and decay times.…
This article reviews the fundamental experimental and theoretical results on the nature of radiation defects and the mechanism of their production in ionic (mainly alkali-halide) crystals. We show that one can produce high concentrations of radiation defects in these crystals by irradiating with photons and particles…
American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc. Abstract Corrosion data were obtained in a well in the Salton Sea Geothermal Field. These data were obtained from inspection of steel tubing removed from the 4200-foot well and from specimens of various alloys exposed at the bottom of the well.…