Materials Literature
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The effects of different fluxing ingredients on melting characteristics, thermal expansion, DC resistivity and dielectric properties of the glass compositions, MgO 10, CaO 10, Al2O3 19, SiO2 61% and MgO 18, Al2O3 19, SiO2, 63% were studied. Li2O is the strongest fluxing ingredient but it increased expansivity and diel…
The Hall coefficient of alloys of up to 5% Ni, Co, Fe, and Mn in Au has been measured from 4.2°K to room temperature. The Hall coefficients are strongly temperature dependent in these alloys and have been fitted to an equation of the form R=R0+R1χ, where R0 is close to the value for the Hall coefficient of pure Au, an…
Basic domain structures of epitaxially grown single-crystal thin films of iron are investigated by the powder pattern technique. For films with (001) orientation, where two easy axes of magnetization lie within the plane of the film, a checkerboard pattern, i.e., a regular square domain pattern made up of 90° walls on…
Abstract Es wurde die Kinetik der CaCO 3 ‐Bildung aus dem Oxyd unter verschiedenen CO 2 ‐Drucken untersucht und gefunden, daß die Geschwindigkeit der CO 2 ‐Aufnahme bei Temperaturen über 800 °C durch die druck‐abhängige Keimbildung und den ebenfalls druckabhängigen Wachstumsprozeß bestimmt wird. Bei 800 °C und Drucken…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFriedel-Crafts Isomerization. III. Aluminum Bromide-Catalyzed Isomerization of Bromofluorobenzenes, Bromochlorobenzenes, and DibromobenzenesGeorge A. Olah, William S. Tolgyesi, and Robert E. A. DearCite this: J. Org. Chem. 1962, 27, 10, 3455–3464Publication Date (Print):Octo…
J. E. Kirk, M.D., M. Chieffi, M.D.; Variation with Age in Elasticity of Skin and Subcutaneous Tissue in Human Individuals, Journal of Gerontology, Volume 1
Machine learning (ML) is transforming all areas of science. The complex and time-consuming calculations in molecular simulations are particularly suitable for an ML revolution and have already been profoundly affected by the application of existing ML ...Read More
The formation of elongated dislocation loops in deformed copper single crystals has been studied by transmission electron microscopy. A mechanism by which elongated loops could be formed is considered in detail. The density of these loops was found to increase only slightly during stage I of the stress-strain curve, b…
The theories of three non-linear optical processes are given: (i) the creation of excitons by simultaneous absorption of two photons of different frequency; the particular case of Cu 2 O is treated in detail; (ii) the generation of second-harmonic radiation from a monochromatic primary beam in a crystal without a cent…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE ADSORPTION OF FLEXIBLE MACROMOLECULES. PART II. THE SHAPE OF THE ADSORBED MOLECULE; THE ADSORPTION ISOTHERM SURFACE TENSION, AND PRESSURE1A. SilberbergCite this: J. Phys. Chem. 1962, 66, 10, 1884–1907Publication Date (Print):October 1, 1962Publication History Published o…
The solid solutions (1- x )FeTiO 3 - x Fe 2 O 3 exhibit strong ferromagnetic moments in the composition range 0.1< x <0.6. In this region cation ordering is thought to occur such that the Fe 2+ and Ti 4+ ions occupy alternate (111) layers, thus forming sublattices A[ x Fe 3+ , (1- x )Fe 2+ ] and B[ x Fe 3+ , (1- x )Ti…
It has been shown by DeBlois that surface flaws decrease the magnitude of the nucleation field of iron whiskers below the ideal theoretical value Hn0=2K1/Ms. It is assumed here that the number of flaws in area S is determined by a Poisson distribution, with mean number λS (λ=const); that each flaw independently has a…
The dielectric constant of vacuum-deposited ZnS films was measured as a function of thickness in the range of 350 Å to 4 μ. For room temperature deposition, a sharp anomaly was found in the dielectric constant vs thickness curve. The highest measured constant was 34.7 at a thickness of 900 Å. As the thickness increase…
Abstract 1) The most active catalyst was obtained when 400 mg. of silk-fibroin was boiled with 30 ml. of 0.5% aqueous solution of rhodium chloride for ca. 30 min., and the resulting chelate was then reduced. 2) The activity of this catalyst was not influenced significantly by the conditions for its preparation and was…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Application of Simple Equations for Calculating Bond Dissociation Energies to Thermal Degradation of FluorocarbonsL. A. ErredeCite this: J. Org. Chem. 1962, 27, 10, 3425–3430Publication Date (Print):October 1, 1962Publication History Published online1 May 2002Published i…
A study of three types of anomalous nickel-iron magnetic films has been made: high coercive-force films, which have unusually large hysteresigraph values of wall and rotational coercive forces; rotatable initial-susceptibility films, for which the value of the initial susceptibility as found from low-field hysteresigr…
Anorthite CaA12Si20 s has the same point group, I, as a simple felspar, but four times the volume per lattice point; its unit cell is primitive, with a 14 Jk c-axis, while that of albite, for comparison, is C-face-centred with a 7 A c-axis.Anorthite approximates much more closely to a C-face-centred cell with a 14 A c…
1. Free glycerol was identified as a major carbohydrate component of the dormant cysts of Artemia salina. 2. The amount of glycerol present in cysts aged for a year in the dry state was found to be about 5% of the cyst weight, and was shown to be restricted to the embryonic part of the cyst. 3. Glycerol content decrea…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and Properties of Some N-Aryl Hydroxamic Acids.S. G. Tandon and S. C. BhattacharyyaCite this: J. Chem. Eng. Data 1962, 7, 4, 553–555Publication Date (Print):October 1, 1962Publication History Published online1 May 2002Published inissue 1 October 1962https://pubs.…
The steady‐state creep behavior of polycrystalline aluminum oxide from 97 to 100% dense has been examined at temperatures from 1600° to 1800°C over a range of stresses from 100 to 2000 psi under four‐point transverse bending. Grain size is shown to have an important effect on the deformation behavior. Stress‐strain ra…