Materials Literature
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An analysis of the evolution of microstructure during deformation is made and the relationship between the microstructure and annealing texture development considered in detail. Although existing data are inadequate for a full assessment, it seems that all annealing texture components encountered in single-phase cubic…
Basic principles of catalysis adsorption on solid surfaces chemisorption at metal surfaces chemisorption at oxide surfaces kinetics of catalysed reactions quantitative aspects of catalysis by metals heterogeneous catalysis: structure, preparation, and use catalysis in energy conversion and in the production of hydroca…
The application of three branches of electron spectroscopy to surface studies, with particular emphasis on submonolayer chemisorption systems, is reviewed. The three branches are x-ray photoelectron spectroscopy (XPS), vacuum uv photoelectron spectroscopy (UPS), and Auger electron spectroscopy (AES). Each technique is…
A theoretical and experimental study of the application of x-ray-photoelectron angular distribution measurements to quantitative surface characterizations is presented. The basic theoretical model that has been used previously to analyze such angular distributions from flat surfaces in the absence of electron-diffract…
One micron-thick sections of tissues fixed in glutaraldehyde, or in glutaraldehyde followed by osmium tetroxide, and embedded in a variety of plastic resins were stained in a methylene blue-azure II solution at 65 C, then counterstained in 0.05% basic fuchsin in 2.5% ethanol at room temperature (24 C). Considerable va…
Abstract
The adsorption of lanthanum, dysprosium, holmium, and ytterbium on kaolinite, illite and smectite has been studied. The kaolinitic and illitic materials discriminate well between the rare earths, and indicate that there is a gradual increase in adsorption-strength from lanthanum to ytterbium. This corresponds to the v…
Experimental measurements and model interpretations are given for properties of hot-pressed PZT-5 specimens with grain sizes from ∼2 to 5 μm. The dielectric and piezoelectric parameters are studied as functions of temperature, of hydrostatic pressure up to 2800 kg cm−2, of grain size and of the poling history, using a…
The thermal conductivity of thin films of copper (400–8000 Å) has been measured in the temperature range 100–500 K. It decreases with decreasing film thickness. An electrical-thermal transport analogy has been used to calculate the size-dependent thermal conductivity of the thin copper films. The decrease of the therm…
Abstract : This report presents and discusses the available data and information on the thermal conductivity of the elements and contains the recommended reference values resulting from critical evaluation, analysis and synthesis of the available data and information. It also gives estimated values, at least for norma…
A glass plate covered with an evaporated silver layer of about 200 Å thickness is irradiated by a line-shaped electron probe in a vacuum of 10−4 Torr. A layer of polymerized hydrocarbon of very low electrical conductivity is formed at places subjected to high electron current density. An electrolytically deposited cop…
Research Article| September 01, 1974 Chlorine, Sulfur, and Water in Magmas and Oceans A. T. ANDERSON A. T. ANDERSON 1Department of Geophysical Sciences, University of Chicago, Chicago, Illinois 60637 Search for other works by this author on: GSW Google Scholar Author and Article Information A. T. ANDERSON 1Department…
When a negative dc voltage is applied to a needle in an electronegative gas such as atmospheric air, highly regular corona current pulses (Trichel pulses) are observed under some conditions. Systematic variation of the macroscopic experimental parameters has yielded the functional dependence of the pulse frequency, ch…
Interfacial and surface tensions of polymers are important in the technology of plastics, coatings, textiles, films, and adhesives through their roles in the processes of wetting, adsorption, and adhesion. Because of experimental difficulty due to high viscosity, however, reliable measurements of these quantities were…
Sodium niobate, NaNbO3, has seven structures belonging to the perovskite family, comprising the aristotype 1 (with the ideal perovskite structure) and six hettotypes 1 (structures with lower symmetry). The differences between them can be systematized in terms of two factors, displacement of Nb from the octahedron cent…
X‐ray diffraction, electron diffraction, and Raman scattering measurements are presented for dehydrated amorphous ZrO 2 . Although the material lacks sufficient crystallinity to diffract X rays, electron diffraction patterns indicate a microcrystallinity with a grain size of 15 to 30 A. Raman spectra characteristic of…
During the Indian Ocean Expedition of R/V "Meteor" phytoplankton samples were taken with a multiple closing net ("multinet") at 103 stations. In this material the diatoms were investigated. In all 247 taxa could be identified which belong to 242 species and 5 varieties or formae of 80 genera. Of these 1 variety, 15 sp…
Phase transitions in the solid solution Sr χ(Na 0.5Bi 0.5)l-χTiO3 have been studied by dielectric, pyroelectric and D-E characteristic measurements. An intermediate antiferroelectric phase has been observed in the composition range of 0 ⩽ χ ⩽ 0.5 of this system. These compositions undergo a ferroelectric-antiferroelec…
Methanation, the hydrogenation of carbon oxides to methane. has been the subject of a large number of catalytic studies during the past 70 years. In the earliest work. that of Sabatier and Senderens [l]. nickel was found to be a very efficient catalyst. Nickel is still the material of choice in most investigations of…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfrared studies of apatites. I. Vibrational assignments for calcium, strontium, and barium hydroxyapatites utilizing isotopic substitutionB. O. FowlerCite this: Inorg. Chem. 1974, 13, 1, 194–207Publication Date (Print):January 1, 1974Publication History Published online1 Ma…