Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Quantitative liquid-structure analysis using energy-scanning diffraction rather than the traditional angle-scanning diffraction is introduced. In the experimental method, white radiation and a solid-state detector are employed. This new method is inherently faster and less beset with problems of experimental instabili…
Abstract The Si/Al ratio of an hydrothermal system plays an important role in kaolinite synthesis. If the atomic Si/Al ratio of a system is greater than 2-0, kaolinite will disappear at 345 + 5°C and 2 kbars water pressure according to the reaction kaolinite + 2 quartz → pyrophyllite + H 2 O. If the atomic Si/Al ratio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular stereochemistry of (.alpha.,.gamma.-dimethyl-.alpha.,.gamma.-dihydrooctaethylporphinato)oxotitanium(IV)Patrick N. Dwyer, L. Puppe, J. W. Buchler, and W. Robert. ScheidtCite this: Inorg. Chem. 1975, 14, 8, 1782–1785Publication Date (Print):August 1, 1975Publication…
Methylcyclopentadienyl manganese tricarbonyl (MMT) has been marketed as a combustion improver for fuel oil and turbine fuel. Use concentrations for this purpose are about 0.025 g manganese/gal in fuel oil and 0.08 to 0.5 g/gal in turbine fuels. In addition, it has been used to a small extent in gasoline.
The periodate-degradation technique was used to demonstrate the mechanism by which the reducible cross-links of collagen are stabilized. In all the tissues examined, Smith degradations of the 3H-labelled cross-links indicated that dihydroxylysinonorleucine is derived solely from hydroxylysino-5-oxonorleucine, the Amad…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTris(dithiocarbamato) complexes of iron(II), iron(III), and iron(IV). Electrochemical studyR. Chant, A. R. Hendrickson, R. L. Martin, and N. M. RohdeCite this: Inorg. Chem. 1975, 14, 8, 1894–1902Publication Date (Print):August 1, 1975Publication History Published online1 May…
Graham and Thornber (1974b) have proposed a mechanism for metamictization in complex niobium-tantalum oxides in which complex compositions, rather than radiation damage, are the primary requirement. This note reviews the literature in support of radiation damage as a necessary condition for metamictization and suggest…
The electrochemical conditions within cracks in metals undergoing cathodic hydrogen charging in acid solutions are analyzed. The gradients of the electrical potential and concentrations of the various ionic species and the current distribution are calculated for a model crack. The actual potential profiles were measur…
Abstract The density of crystals of poly(ethylene terephthalate), (PETP), Q c is checked by X‐ray diffraction assuming a triclinic unit cell and the indices of reflections as found by Bunn. The following unit cell dimensions are found: a = 4,48Å, b = 5,85Å, c = 10,75 Å, α = 99,5°, β = 118,4°, and γ = 111,2°. This give…
The orthorhombic unit cell of Cu 4 Bi 4 S 9 crystals has dimensions: a = 11.589(5), b = 32.05(1), c = 3.951(5) Å; space group Pbnm , and Z = 4. The structure, which has been determined with the symbolic addition procedure, contains, sulfur-sulfur bonds in a form of S 2 groups, as predicted from the valence rule with S…
Investigation of soils from Devon and King Christian Islands show frost processes as having a dominating influence upon microfabric characteristics. Frost processes are expressed in the various modifications of banded fabric observed in the soils, and fine-grained cappings on framework members. While soils from Devon…
Direct reflectance measurements have been carried out on thin solid guanine films over a range of photon energies extending from 2 to 82 eV. Over this range these measurements, along with a Kramers-Kronig analysis, yield the complex refractive index n, the complex dielectric function e, and the energy loss function $-…
Colourless needles of the compound CsGaS 2 were obtained by the reaction of cesium carbonate with gallium oxide at 850°C under a stream of H 2 S. Structural investigations of (100) twinned crystals revealed an atomic arrangement isotypical with RbFeS 2 . Space group C2/c; a = 7.425(6) Å, b = 12.21(1) Å, c = 5.907(6) Å…
The red pigment uroerythrin, a chromophore known to be adsorbed by the amorphous urate sediments (sedimentum lateritium), has been isolated from human urine and further purified as its trimethyl derivative. Urine was applied to a column of Amberlite XAD-2 resin on which uroerythrin and other pigments were adsorbed. Th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation, structure, and properties of europium ruthenium hydrideJeffery S. Thompson, Ralph O. Moyer, and Robert. LindsayCite this: Inorg. Chem. 1975, 14, 8, 1866–1869Publication Date (Print):August 1, 1975Publication History Published online1 May 2002Published inissue 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic exchange interactions in transition metal dimers. V. Copper(II)-diethylenetriamine complexes with oxalate, cyanate, thiocyanate, and azide inner- and outer-sphere bridging units. Electron paramagnetic resonance of alkali halide pelleted copper complexesGretchen R. H…
Abstract The spreading rate of a thin film of a liquid on the horizontal surface of an immiscible liquid substrate is calculated by an approximate quasi‐steady analysis. Spreading is assumed to be driven by the combination of gravity and interfacial forces. Dimetryl siloxane fluids of various viscosities were permitte…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMacrocyclic tetradentate complex. Structure of 1,4,8,11-tetrathiacyclotetradecanenickel(II) tetrafluoroborate, Ni(TTP)(BF4)2, and electron paramagnetic resonance spectra of its copper-63-doped crystalsP. H. Davis, L. K. White, and R. L. BelfordCite this: Inorg. Chem. 1975, 1…
Changes in the a -axis and the c -axis thermal resistivity of pyrolytic graphite caused by electron irradiation at 82 K and by subsequent isochronal pulse annealing have been measured. The additive thermal resistivity at 78.5 K increases as 9.6×10 2 N 0.85 f and (7.9±0.6)×10 3 N 0.75 f cm deg/W in the a -axis and the…
In part I it was shown that if the strain energy function was expanded to a sufficient degree and the coefficients Cij were found by regression to pure homogeneous strain data, then stress–strain equations could be derived to give accurate solutions to design problems even at relatively high extensions. The problems o…