THE AUGMENTATION MAMMAPLASTY
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Internal deformation and fracture of second order 1011-1012 twins in magnesium
Internal deformation and fracture of second order /1011/-/1012/ twins in Mg single crystals, noting large strains
Visible and Infrared Absorption Spectra of Uranium Dioxide
The absorption spectra for single crystal and polyerystalline UO2 have been measured between 0.6 and 15 μm at room temperature. The spectrum for UO2 resembles that of a typical semiconductor, opaque in the visible but transparent over a large portion of the infrared. An absorption edge is located at approximately 0.6…
Equilibrium Pressures of Oxygen over MnO[sub 2]-Mn[sub 2]O[sub 3] at Various Temperatures
Oxygen pressures of the pyrolusite form of MnO 2 have been determined in a temperature range of 441°–642°C. The dissociation reaction 4 MnO 2 ( c ) ⇄ 2 Mn 2 O 3 ( c ) + O 2 ( g ) has been found to reach a steady state in the forward direction; reaction in the reverse direction was exceedingly slow and did not reach a…
Proton spin-lattice relaxation in polypropylene oxides
T. M. Connor, D. J. Blears and G. Allen, Trans. Faraday Soc., 1965, 61, 1097 DOI: 10.1039/TF9656101097
Interaction of Alkali Metal Cations with Silica Gel1
ADVERTISEMENT RETURN TO ISSUEPREVArticleInteraction of Alkali Metal Cations with Silica Gel1H. Ti TienCite this: J. Phys. Chem. 1965, 69, 1, 350–352Publication Date (Print):January 1, 1965Publication History Published online1 May 2002Published inissue 1 January 1965https://pubs.acs.org/doi/10.1021/j100885a508https://d…
Corona Phenomena from Water Drops on Smooth Conductors under High Direct Voltage
The effect of high direct voltage on the formation and dislodging of water drops hanging from a smooth conductor will be shown and used to explain the resulting corona characteristics, such as pulse amplitude and repetition rate, audible noise, radio influence (RI) and loss current, and corona current waveforms. Pheno…
Continuous Distribution of Dislocations and the Mathematical Theory of Plasticity
Abstract Mises' yield criterion, the Prandtl‐Reuss relation between stress and plastic strain rate, and Hencky's theorem on shear lines for isotropic elastic‐plastic materials are derived from the theory of continuous distributions of dislocations. A linear relation between the velocity of dislocations and the gliding…
Dislocation Structure in Deformed Single Crystals of Magnesium
Abstract The dislocation structure produced by tensile deformation of magnesium single crystals at 77 K and at room temperature has been investigated by transmission electron microscopy techniques. Sections both parallel and perpendicular to the basal plane have been cut by spark machining from single crystals deforme…
Surfaces of solids
Abstract
New Yielding Phenomenon in Some Aluminium Alloys at High Temperatures
A new type yielding phenomenon was observed in Al-Mg and Al-Cu alloys which were pulled at high temperatures above about 350°C. In order to determine characteristics of this high temperature yielding phenomenon, several binary aluminium alloys were investigated by tensile tests at various temperatures from room temper…
Tetragonal Germanium Dioxide and Equilibria in the Ge-O-H System
The thermodynamic stability of tetragonal germanium dioxide has been characterized by measurements of the equilibrium ratios in the temperature range 830°–1020°K. Results are extrapolated to 298°K using estimated heat capacities, to give the standard thermal parameters, and to the tetragonal‐hexagonal transition point…
Termes linéaires et quadratiques dans l’effet magnéto-optique de Kerr
Les calculs de l’effet Kerr magnéto-optique des substances isotropes sont effectués jusqu’aux termes proportionnels au carré du paramètre Q de Voigt. Dans le cas du fer, la correction à apporter à l’approximation linéaire est de l’ordre de quelques secondes d’arc. Quelques graphiques illustrent les principaux résultat…
Crystal-Field Splitting in Yb3+ Chelates
Optical absorption and emission spectra of trivalent ytterbium in various chelates are reported. The experimental energy levels of Yb3+ are compared with predictions of electrostatic crystal-field theory and of a contact model of ligand-field theory. Good agreement is found between theory and experiment for the electr…
CONFORMATION OF AN ISOLATED POLYMER MOLECULE AT AN INTERFACE
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.
Crystallographic Formulae for Hexagonal Lattices
Abstract For structures with hexagonal symmetry, three different axial systems (rhombohedral, orthorhombic, and hexagonal) are in general use to define the indices of directions and planes. The hexagonal axial system is the one in which confusion is most likely to occur if the axes and the notation are not clearly def…
An Investigation of Porous Anodic Oxide Films on Aluminum by Comparative Adsorption, Gravimetric and Electronoptical Measurements
Results of BET adsorption measurements on a‐c and d‐c sulfuric acid anodic films on aluminum have been compared with results of pore counts and with coating ratio figures. Both real surface and volume were measured. A roughness factor should be introduced in order to obtain an agreement between data from different sou…
Intrinsic electric strengths of organic polymeric materials
A technique has been developed to measure the 60c/s a.c. intrinsic electric strength of organic polymers. This technique consists in embedding the electrodes and film to be measured in a thermoset resin. The solid construction eliminates prebreakdown discharges on the film surface from the breakdown of liquid used in…
1104. Porphyran: a polysaccharide with a masked repeating structure
N. S. Anderson and D. A. Rees, J. Chem. Soc., 1965, 5880 DOI: 10.1039/JR9650005880
The polarized diffuse double layer
A singular-perturbation expansion of the electric field and the concentrations provides a rigorous justification for dividing an electrolytic solution into ' the diffuse part of the double layer at an interfac~ and a diffusion layer on the solution side of the interface. At the same time this expansion provides a mean…