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。
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and reactions of new complexes of nickel, palladium, and platinum with 1,2-ethanedithiol, 2-(methylthio)ethanethiol, and 2-(methylthio)ethane disulfideThomas B. Rauchfuss and D. Max RoundhillCite this: J. Am. Chem. Soc. 1975, 97, 12, 3386–3392Publication Date (Prin…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfluence of metal particle size on the chemisorption properties of supported platinum. Analogy with cluster compoundsM. Primet, J. M. Basset, E. Garbowski, and M. V. MathieuCite this: J. Am. Chem. Soc. 1975, 97, 13, 3655–3659Publication Date (Print):June 1, 1975Publication…
The magnetizations of Ni-Rh alloys on either side of the critical composition for ferromagnetism (${c}_{\mathrm{crit}}\ensuremath{\approx}63\ensuremath{-}\mathrm{a}\mathrm{t}.%\phantom{\rule{0ex}{0ex}}\mathrm{N}\mathrm{i}$) were measured between 4.2 and 250\ifmmode^\circ\else\textdegree\fi{}K in fields up to 56 kOe. T…
Abstract The idealized symmetry of kaolinite-type minerals (1:1 phyllosilicates) is analysed in detail. They can be considered as OD-structures consisting of three kinds of OD-layers. Each of them, taken separately, possesses higher symmetry than their combination. This explains the well-known tendency of kaolinite-ty…
Abstract Formation of free radicals in photoirradiated cellulose has been studied by means of ESR spectroscopy at 77°K. Three kinds of light sources with different wavelengths between 2500 and 4000 ÅR were employed. No radicals detectable by ESR were recorded when cellulose was irradiated with light of wavelength long…
Abstract Twelve force constants in the general quartic force field of carbon disulfide have been determined by a least-squares method from the available spectroscopic data on four isotopic species of carbon disulfide: 12C32S2, 13C32S2, 12C32S34S, and 13C32S34S. A reasonable set of force constants is obtained together…
Using techniques drawn from the statistical theory of branching processes, we approximate the critical resolved shear stress for the athermal planar glide of a dislocation, idealized as a flexible line of constant tension, through a random mixture of immobile point obstacles of distinct types. The approach simultaneou…
Some of the areas where interfacial protein layers dominate the boundary chemistry are reviewed, and we introduce some nondestructive analytical methods which can be used simultaneously and/or sequentially to detect and characterize the microscopic amounts of matter at protein or other substrates which spontaneously a…
Aqueous solutions of bovine A1 protein, the major component of the basic protein fraction of myelin, were studied by small angle X-ray diffraction. The experimentally determined molecular weight, 17,800, is within 3% of that corresponding to the amino acid sequence, 18, 395, and the radius of gyration was found to be…
Abstract Rotes KSbS 2 wurde aus wässerigen Lösungen von KHS und Sb 2 S 3 unter milden hydrothermalen Bedingungen dargestellt und strukturell untersucht. Die kristallographischen Daten sind: monoklin, Raumgruppe C2/cC a = 8,75 ± 0,01 Å, b = 8,98 ± 0,01 Å, c = 6,84 ± 0,01 Å β = 121,6° ± 0,1 4 Formeleinheiten in der Ele…
Abstract A mechanism is proposed for the thermal degradation of aromatic amine‐cured glycidyl ether‐type epoxide resins which is based on the results of previous work in this field. The significance of the degradation mechanism to the thermal stability of aliphatic amine‐cured epoxides and aromatic amine‐cured cycloal…
Abstract Damping systems based on interpenetrating polymer networks (IPN's) provide noise and vibration attenuation over broad temperature and frequency ranges. Semicompatible latex IPN's are employed in both extensional and constrained layer configurations. The damping behavior of IPN's of compositions poly(ethyl met…
A study has been made of the exudate provoked by intrapleural carrageenan in rats. Various parameters have been measured including volume of exudate, numbers and types of cells. Pharmacological assay has shown the early release of histamine and 5HT into the exudate followed at later times by a release of prostaglandin…
Relative quantum yields have been measured for O(1S), N(2D), and N2(A 3Σ+u) production from N2O over the wavelength range 1100–1500 Å. The measurements of O(1S) were made by observing the 1S0 → 1D2 emission at 5577 Å. N(2D) was measured via the intensity of NO β bands generated by N(2D)+N2O → N2+NO(B 2Πr) followed by…
Nominally undoped YAl${\mathrm{O}}_{3}$ shows broad intense absorption bands in the visible after irradiation with visible and near uv light at 77 K; they become especially strong after subsequent irradiation with near ir. The bands could be correlated with an ESR spectrum arising from holes, which are trapped at ${\m…
Susceptibility measurements over a wide range of temperatures on concentrated amorphous transition-metal aluminosilicate glasses (11.8-33.5-at.% Co, 12.3-41.7-at.% Mn) are reported. In the high-temperature regime (>\ensuremath{\sim}50 K), these glasses show Curie-Weiss behavior with large negative paramagnetic Curi…
A theoretical model for multilayer antireflection coatings is presented on the basis of the theory of all-dielectric Fabry-Perot interference filters. Effective interfaces are employed, and a new concept of a replacement pair consisting of two layers is introduced. It is shown that incorporation of this pair in a mult…
Abstract A promising technique emphasised in the proposed tannery waste treatment system is surface adsorption. Specific surface adsorption processes studied were foam separation without additives, adsorbing colloid flotation, carbon adsorption, and adsorption flotation. Results show that foam separation without addit…
The theory of voltage gradients in the insulation of high-voltage dc cables insulated with oil-impregnated paper is refined by including the effects of power losses within the insulation. The analysis is performed by means of perturbation theory, which yields formulas that are more convenient to use than the more exac…
The additives and contaminants which occur in textile fibers vary widely, depending on the type of fiber and the pretreatment which it has received. Synthetic fibers such as nylon and polyester contain trace amounts of contaminants such as catalysts and catalyst deactivators which remain after the synthesis of the bas…