Tejas de hormigón en distintos colores para el tejado moderno
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Materials Literature
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New wearing surface for german autobanen
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Bibliography
Empleos de las cenizas volantes en la construcción
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Los dos hornos mayores del mundo· para una fábrica de cemento de la URSS
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Estudio de los factores térmicos del horno en zigzag
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Elastic Bending of Layered Plates
System of equations governing nonlinear bending of plates consisting of two or more bonded thin layers; effects of both transverse and in-plane loading and thermal gradients through plate thickness as well as over plate faces are given; specialization of equations for particular classes of problems.
Theory of the Concave Grating III Seya-Namioka Monochromator*†‡
As an example of a mounting in which the optical components are not on the Rowland cylinder, the Seya-Namioka mounting is treated mainly from the standpoint of physical optics. An ambiguity in the physical meaning of Beutler’s focal conditions is clarified; using the corrected condition a brief summary of the optical…
How to measure super-fine pouders?
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Evidence for a Second Crystal Form of Polypropylene
An attempt is made to account for the observed birefringence of the various types of polypropylene spherulite in terms of preferred crystalline orientation. Evidence is also presented showing that some of these spherulites crystallize with a new metastable crystal structure, not previously described.
Spherulitic Crystallization in Polypropylene
A survey has been made of spherulites formed by the isothermal crystallization of polypropylene from the melt in the temperature range 110°–148°C. Four types of spherulite have been distinguished and their structural morphology, optical properties, melting behavior, and growth rates have been examined.
An Empirical Method for Estimating the Degree of Crystallinity of Native Cellulose Using the X-Ray Diffractometer
An empirical method for determining the crystallinity of native cellulose was studied with an x-ray diffractometer using the focusing and transmission techniques. The influence of fluctuations in the primary radiation and in the counting and recording processes have been determined. The intensity of the 002 interferen…
Band Structure of Noble Metal Alloys: Optical Absorption inα-Brasses at 4.2°K
Calorimetric optical absorption measurements at 4.2\ifmmode^\circ\else\textdegree\fi{}K have been made on a representative series of $\ensuremath{\alpha}$ brasses over the wavelength range 0.23 to 4.0 microns using electropolished bulk specimens. Changes in the absorption spectrum below 6000 A are interpreted in the l…
Magnetization of Compounds of Rare Earths with Platinum Metals
Measurements have been made of the Curie points and magnetic moments of three series of compounds (Laves phases) $M{\mathrm{Ir}}_{2}$, $M{\mathrm{Os}}_{2}$, and $M{\mathrm{Ru}}_{2}$, where $M$ is a rare-earth element. The Curie point is highest (85\ifmmode^\circ\else\textdegree\fi{}K) for the compounds containing Gd a…
Electron-Spin Resonance of Nitrogen Donors in Diamond
Electron-spin resonance of bound substitutional nitrogen donors in diamond is observed and discussed. The $g$ factor is isotropic at 2.0024\ifmmode\pm\else\textpm\fi{}0.0005. For a given donor, one of the C-N bond directions is a hyperfine axis with constants $A=40.8$ oersteds, $B=29.2$ oersteds. There are thus four t…
Zum Mechanismus der Autoxydation metallorganischer Verbindungen
Abstract Metallorganische Verbindungen reagieren in verschiedener Weise mit molekularem Sauerstoff. Alkyl‐Metall‐Verbindungen werden zu Metallalkyl‐peroxyden oxydiert. Aus den Alkali‐Addukten aromatischer Kohlenwasserstoffe entstehen Alkali‐peroxyd und Kohlenwasserstoff. Aryl‐Metall‐Verbindungen schließlich ergeben al…
Forced Magnetostriction of Nickel
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation R. C. Hall; Forced Magnetostriction of Nickel. Journal of Applied Physics 1 September 1959; 30 (9…
Factors Influencing Corrosion
External and internal factors influencing the rate and distribution of corrosion are discussed. Among the external factors considered are: pH of the solution, influence of elements acting as inhibitors or as stimulants of corrosion, the concentration of neutral salts, the temperature of solution and the rate of soluti…
Hall Coefficient and Magnetoresistance in Semiconducting Diamond
The Hall coefficient and transverse magnetoresistance of two type II-b semiconducting diamonds (p-type) were measured as a function of magnetic field from 500 gauss to 20 000 gauss at fixed temperatures between 0°C and 100°C. These diamonds have R σ values of about 1000 cm 2 v -1 sec -1 at room temperature. The Hall c…
Radiolysis of Methanol and Methanolic Solutions by CO60Gamma-Rays and 1.95 x 106Volt de Graaf Electrons
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRadiolysis of Methanol and Methanolic Solutions by CO60Gamma-Rays and 1.95 x 106Volt de Graaf ElectronsNorman N. LichtinCite this: J. Phys. Chem. 1959, 63, 9, 1449–1454Publication Date (Print):September 1, 1959Publication History Published online1 May 2002Published inissue 1…