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Abstract The distribution curves of the kinetic energis of secondary electrons from the activated copper-beryllium surface impacted by inert gas ions were together with the yield of the secondary electrons, measured by the retarding potential method. The contact potential difference between the ion target (activated c…
The volume and shape of craters produced in lead by the impact of steel pellets at 3 km/sec have been studied as functions of the angle of incidence for angles up to 70° from the normal. It is found that crater volume is linear in the cosine of the angle of incidence, and that it is directly proportional to the kineti…
It is shown that the different antiferromagnetic arrangements of ordered magnetic spins in the identical lattices of α-Fe 2 O 3 and Cr 2 O 3 can be explained by the overlap of suitably directed oxygen p orbitals and the differently populated d orbitals of the Fe 3+ and Cr 3+ ions.
The anomalous behavior of rubidium and cesium borate glass and the boron coordination in alkali borate liquids are discussed. The viscosity‐composition isotherms of rubidium and cesium borates have been found to follow the same trend as those of other alkali borates. For boron oxide at temperatures between 500° and 77…
Stability constants of the complexes formed between the rare earths and 1,2-bis-STA2-di-(carboxymethyl)-aminoethoxy!-ethane (EGT A) and 2,2' -bis- STAdi- (carboxymethyl)amino!-diethyl ether (EEDTA) were determined by the polarographic and mercury electrode methods at a temperature of 20 deg and an ionic strength of mu…
A derivation of the polarization curve of alloys from those of the single metallic components is shown. At mixed metallic crystals of irregular lattice distribution the rate of dissolution of the alloy in the active state approaches that of the main metallic component of lowest rate of dissolution within certain limit…
A rigorous solution in closed form is obtained of the equations of the linear theory of shells for the case of a spherical shell under point loads at its poles. The solution reduces to a membrane state of stress at some distance from the poles. In the immediate vicinity of the poles, E. Reissner's results for a shallo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Preparation and Properties of Some MethoxypyrrolesHenry. Rapoport and Clyde D. WillsonCite this: J. Am. Chem. Soc. 1962, 84, 4, 630–635Publication Date (Print):February 1, 1962Publication History Published online1 May 2002Published inissue 1 February 1962https://pubs.acs…
Abstract Diagenesis refers to the process, and the changes (usually excluding cation exchange) that take place in sediments after deposition, but definitions of the process vary widely over which changes, and what part (or all) of the time between the transportation of the sediment and the time that the sediment(ary r…
Abstract Ordinary modulus–temperature physical test data at low deformations for unswollen gum elastomers has been partitioned into contributions from primary and secondary interchain linkages. The analysis is based upon the supposition that primary or covalent bonds conform to the statistical theory of rubberlike ela…
Abstract Experimental data are presented to show that the current auxilliary procedures adopted for identification of kaolinite in the presence of chlorite are not generally valid because the procedures often fail to give an explicit condition for distinguishing both the minerals. As the result of an examination of nu…
A series of experiments on polycrystalline molybdenum are described which were designed to provide a quantitative test of a theory of the deformation and fracture of b.c.c. transition metals proposed by Cottrell (1958). The parameters σi and k y in the Petch relation σy=σi+k y d −1/2 between lower yield stress, σy, an…
The significance of the parameters [sgrave]i and k y in Petch's empirical relation [sgrave]y=[sgrave]i+k y d −1/2 between yield stress and grain size is discussed. It is concluded that [sgrave]i is made up of two terms [sgrave]i (L) and [sgrave]i (I). The first, [sgrave]i (L), represents the stress required to propaga…
The finite nature of energy loss processes for a charged particle in a material leads to a "ringing" effect in the thick-target yield curve. The effect is described and evaluated.Received 20 September 1961DOI:https://doi.org/10.1103/PhysRev.125.937©1962 American Physical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Electronic Character of the Azido Group Attached to Benzene RingsPeter A. S. Smith, John Herbert. Hall, and Robert O. KanCite this: J. Am. Chem. Soc. 1962, 84, 3, 485–489Publication Date (Print):February 1, 1962Publication History Published online1 May 2002Published inis…
An analysis of the dynamics of the alkali halides which allows for the polarizability of the ions and their ‘deformation’ by the overlap repulsion is presented. This represents a refinement of earlier work by other authors in which the ions are treated as rigid point charges. The analysis has been applied to KCl and u…
Abstract It is demonstrated by accurate x‐ray diffraction measurements that a variety of types of branches will affect the dimensions of the orthorhombic unit cell of polyethylene. In particular, the random placement of methyl branches on the molecular backbone by means of copolymerization of 12 mole‐% of propylene wi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIridium Complexes of the Type [Irn+ (en-xHy)](n-yx)+1,2George W. Watt, L. E. Sharif, and E. P. HelvenstonCite this: Inorg. Chem. 1962, 1, 1, 6–9Publication Date (Print):February 1, 1962Publication History Published online1 May 2002Published inissue 1 February 1962https://pub…
The magnetic properties of the iron-germanium alloys in α solid solution range were investigated. At about 4 wt. % germanium initial permeability, µ 0 and maximum permeability µ m have their maximum values, and coercive force H c and hysteresis loss W h have nearly their minimum values. The values are µ 0 =3000, µ m =…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBisulfite Adducts of AcroleinH. D. FinchCite this: J. Org. Chem. 1962, 27, 2, 649–651Publication Date (Print):February 1, 1962Publication History Published online1 May 2002Published inissue 1 February 1962https://doi.org/10.1021/jo01049a520Request reuse permissionsArticle Vi…