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Abstract Using the cluster approximation, a detailed semi‐empirical molecular orbital calculation is reported for computing the energy levels of Cu + luminescent centres in NaCl and LiCl. Excited states energies are obtained on the basis of 3d 9 4s configuration of Cu + , including spin–orbit interaction. Excitation a…
Abstract The electrodic polymerization on graphite fibers of a variety of monomers having different types of functional groups has been investigated. In addition to vinyl polymerization, some novel polymerizations of cyclic functional groups have been conducted under appropriate polymerization conditions. In many inst…
Results of high resolution secondary electron observations of the haemocyanin molecule from the marine whelk Buccinum undatum are given. The choice of metal used for surface coating of the sample (gold, gold--palladium or carbon/gold--palldium) and the mode of application of this metal (thermal vacuum evaporation or d…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular orbital study of the vibrational frequencies and resonance Raman intensities of biphenyl negative ionsSatoshi Yamaguchi, Nobuaki Yoshimizu, and Shiro MaedaCite this: J. Phys. Chem. 1978, 82, 9, 1078–1080Publication Date (Print):May 1, 1978Publication History Publis…
Yutaka Tokiwa, Tomoo Suzuki; Hydrolysis of Polyesters by Rhizopus delemar Lipase, Agricultural and Biological Chemistry, Volume 42, Issue 5, 1 May 1978, Pa
SUMMARY The analytic solution for the model of electron beam heating a moderately thick STEM/SEM specimen was used to calculate the steady state temperature profiles developed in the bulk of the specimen. For thin specimens one maximum in the temperature profile was found near the surface. The location of this maximum…
We have studied a Landau theory for charge-density waves keeping terms up to sixth order in the free-energy expansion. Even with amplitude modulation, the lock-in transition remains continuous. We construct a phase diagram with three phases: normal, incommensurate, and commensurate meeting at a triple point. With no s…
As part of a study to understand the influence of gravity, cooling rate, and composition on the structure of liquid-phase immiscible materials, two alloys, AI-40 wt% In and Ai-70 wt% In, were treated thermally on the SPAR II rocket flight. The treatments involved homogenization at a temperature above the miscibility g…
The deuterium permeation through several copper alloys has been measured over a temperature range of 550 to 830 K using the membrane technique. In some cases, the hydrogen permeability was also measured. The results were divided into three categories: common alloys, gold alloys, and stable oxide forming alloys. Common…
The incommensurate (I) state of the triple charge-density-wave (CDW) in 2H–TaSe 2 is studied on the basis of McMillan's phenomenological free energy. A sufficiently large number of harmonics is taken into account to describe the I state precisely. Model calculations based on this theory predict the first-order incomme…
Single crystals of 3-percent Si-Fe with near
Focusing properties and aberration coefficients are calculated for electrostatic einzel lenses suitable for use as preaccelerator lenses in field-emission electron guns. Various lens shapes are analyzed, and asymmetric designs with conical central electrodes are found to have reduced spherical aberration. A lens shape…
Tritium diffusion coefficients and deuterium solubilities were measured for silicon carbide. At 500° to 1300° C, measured tritium diffusion coefficients were much lower than the recorded values for metals, whereas the activation energies for diffusion were much higher (30 to 75 kcal/mol). The solubility of deuterium i…
Abstract It was shown that some block copolymers and their blends with corresponding homopolymers exhibit stress softening. When the specimens are stretched beyond the yield point, they become rubbery and exhibit high elasticity and large recoverable deformation, as a result of a breakup of their original rigid struct…
The relative intensities of the transitions occurring in the fluorescence spectrum of KY3F10: 1% Eu have been measured at 77 and 4 K. By using the computed eigenfunctions for each Stark level, the Judd–Ofelt theory is used for calculations of the electric dipole intensities. The nine phenomenological parameters allowe…
An experimental study has been made of the interrelation of grain boundary sliding, crystal deformation and intergranular fracture during creep of copper bicrystals. The observed sliding behaviour was analysed on the basis of the movement of lattice dislocations along the grain boundary. The results show that grain bo…
After gold particles are deposited onto an oxidized aluminum strip by the evaporation of gold in argon, tunnel junctions can be formed by making contact to the particles with a thin gold film. Red polarized light is emitted from these junctions when a few volts of potential difference is applied. Such junctions can be…
The structural transition between ring and chain molecules in liquid selenium is explained by a disordered chain model which includes a part of both the Se–8 ring and helical chain conformations in a single molecule. Also are discussed the enthalpy change for the dissociation of chain molecules and the mean length of…
Films formed on iron exposed to phosphate, chromate, nitrite, molybdate, tungstate, and arsenate solutions have been characterized using Auger electron spectroscopy and ellipsometry. It was found that the films could be divided into three groups based on their optical properties. The protective quality of films within…
CNDO/2 molecular-orbital calculations are shown to predict trends in bridging angle, ∠T-Y-T, with reasonable accuracy for gas-phase molecules of the type TX3YTX3, where Y is an anion (= O, OH, S, NH) bridging the tetrahedrally coordinated cations T(= C, Si, Al, Be, B) and where X are the nonbridging anions (= H, F). F…