Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTX-ray photoelectron spectra of inorganic molecules. 21. Sulfur 2p chemical shifts associated with the binding of thiol and thioether groups of transition metal ionsV. Srinivasan, E. I. Stiefel, A. Elsberry, and R. A. WaltonCite this: J. Am. Chem. Soc. 1979, 101, 10, 2611–261…
The regenerative response of minced cardiac muscle grafts in the adult newt was studied using autoradiography and electron microscopy. One-sixteenth to one-eighth of the newt ventricle was amputated, minced, and returned to the wounded ventricle. At five days after grafting, no reorganization of graft msucle pieces wa…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolid State Extrusion of Poly(vinylidene fluoride). 1. Ram and Hydrostatic ExtrusionW. T. Mead, Anagnostis E. Zachariades, Toshio Shimada, and Roger S. PorterCite this: Macromolecules 1979, 12, 3, 473–478Publication Date (Print):May 1, 1979Publication History Published onlin…
Abstract The present work deals with effect of vulcanization temperature on the polymer-filler interaction parameter, vulcanizate structure, and the technical properties of efficiently vulcanized natural rubber stocks in the presence of different fillers. We have used carbon blacks of four different particle sizes (IS…
The Knight shift and spin-lattice relaxation time of $^{125}\mathrm{Te}$ in tellurium single crystals have been measured between room temperature and the melting point (724 K) using pulsed-NMR methods. Over the entire temperature range, the temperature dependence of the Knight shift is found to be determined completel…
I n situ XPS photoelectron studies on amorphous thermally evaporated GdFe and GdCo films have been made under UHV conditions. The results were used to test the conventional concept of charge transfer, which had been applied to the materials under discussion. The XPS binding energies were found to be identical in the p…
Conducting particle charging and detachment into a compressed SF6 coaxial electrode gap energized with high direct voltage have been investigated using the charge simulation technique and dimensional analysis.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTErgosine, ergosinine, and chanoclavine I from Epichloe typhinaJames K. Porter, Charles W. Bacon, and Joe D. RobbinsCite this: J. Agric. Food Chem. 1979, 27, 3, 595–598Publication Date (Print):May 1, 1979Publication History Published online1 May 2002Published inissue 1 May 19…
The lifting field of a free conducting particle (FCP) situated on a dielectric coated electrode in compressed SF6 gas is calculated based on two different particle charging mechanisms-partial discharges occurring in the gas surrounding the particle and charge conduction through the dielectric coating. Calculated value…
It is shown that a Fourier series associated with the Warren-Averbach line-shape analysis can be fitted with only five parameters to a pair of peaks. These interrelate the Fourier coefficients and thereby provide a simplified series which has been applied to the study of a Mo film on a Si crystal. The parameters inclu…
The formation enthalpies of solid alloys in the FeGe, CoGe, NiGe, FeSn, CoSn and NiSn binary systems have been determined with the aid of a solution calorimeter using liquid tin as solvent. The formation enthalpies exhibit negative and, sometimes, high values. Parameters influencing the magnitude of the Δ H B va…
The proton hyperfine coupling tensors in the Cu(H2O)6 2+ ion in Mg(NH4)2(SO4)2.6H2O single crystals at 15 K have been measured by ENDOR spectroscopy. The values obtained are discussed in the framework of conventional molecular orbital theory for copper complexes and can be understood quite satisfactorily. The geometry…
Corrosion protection afforded by pretreating copper in aqueous benzotriazole solutions at temperatures ranging from 25 to 100 C were evaluated. Electrochemical characteristics of pretreated copper mirrors were monitored using rapid polarization techniques. Thickness of surface films were analyzed by infrared multiple…
A model for the high-temperature embrittlement of He-containing metals is presented. The model is based on the formation of small He bubbles within the grains and on the nucleation and growth of grain-boundary cavities under the influence of He and external stress. These processes explain the strengthening of the grai…
Transmission electron microscopy, electron diffraction, and microprobe X‐ray analysis were used to study crystallization of glasses in the systems Li 2 O‐SiO 2 , BaO‐SiO 2 , and Li 2 O‐A1 2 O 3 ‐SO 2 . The ternary system, with 4 mol% TiO 2 added to an Li 2 O‐Al 2 O 3 ‐4SiO 2 composition, crystallizes with a simple mor…
Recently reported measurements made by Jenks and Bopp (1974, 1977) of the energy stored in heavily irradiated NaCl are reviewed in the light of recent understanding of radiation-damage processes in this material It is shown that, in the ranges of temperatures and dose rates of these experiments, the F-centres produced…
Using various interatomic row potentials, the atomistic structure of the core of a screw dislocation in the b.c.c. lattice has been computed. Stable core structure is either of a degenerate or a non-degenerate type depending on the shape of the interatomic row potential; the criterion for the core type is presented. A…
Ceramics are becoming increasingly important in many radiation environments. In addition to refractory fissionable fuels, electrical insulators will be needed for instrumentation in breeder reactor systems and will be widely applied in all fusion reactor concepts, including first‐wall coatings, blanket gaps, injectors…
Abstract—Picosecond absorption spectroscopy was used to determine the intramolecular energy relaxation processes occurring in Ni(II). Pd(II), Pt(II), and Zn(II) protoporphyrin IX dimethyl ester. Picosecond data on the rate of ground state repopulation and the kinetics of a transient intermediate made it possible to de…
The chemical and spectral properties of a series of hemocyanin derivatives were systematically compared to provide insight into the geometric and electronic structure of the oxyhemocyanin active site. The binuclear copper site is characterized as two tetragonal Cu(II) atoms bridged by both an endogenous protein ligand…