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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTensile Strength in Relation to Molecular Weight of High PolymersPaul J. FloryCite this: J. Am. Chem. Soc. 1945, 67, 11, 2048–2050Publication Date (Print):November 1, 1945Publication History Published online1 May 2002Published inissue 1 November 1945https://pubs.acs.org/doi/…
The variation with temperature of the a and c unti-cell dimensions of hexagonal Ceylon graphite has been measured over the temperature range 15°-800°c. by the X-ray powder method. At 14°·6c., a =2.4562±0.0001 kx. c =6.6943±0.0007 kx. The carbon-carbon bond length, C-C=1.4210±0.0001a. The a dimension shows a slight con…
Zeeman effect data are given for 152 lines of La I and 506 lines of La II in the wave-length range 2257A to 7484A. Spectrograms were made at fields of 81,230, 83,370, and 86,570 oersteds using a Bitter electromagnet, and the 24 plates obtained with three diffraction gratings operating simultaneously were measured with…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Metallic Complexes of Tartrates and Citrates, their Structure and Behavior in Dilute Solutions. I. The Cupric and Nickelous ComplexesM. Bobtelsky and J. JordanCite this: J. Am. Chem. Soc. 1945, 67, 10, 1824–1831Publication Date (Print):October 1, 1945Publication History…
An investigation has been made of some characteristics of hysteresis in the pbysical adsorption of nitrogen on bone char, activated carbon, silica gel, and coconut-shell charcoal at 77.4 0 K. It was found that hysteresis became less pronounced in the order given, occurring only slightly in coconut-shell charcoal and o…
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.
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Bruce H. Billings, "Haidinger Interference Fringes in Plane-Parallel Crystalline Plates," J. Opt. Soc. Am. 35, 570-573 (1945) Export Citation BibTex En…
Abstract “Exposure-cracking” is the fissuring which occurs when stretched rubber is placed in an atmosphere containing ozone, and is frequently wrongly described as “sun-cracking”. These cracks form in the rubber at right angles to the applied stress and must be distinguished from crazing, the fissures of which occur…
In this paper the spring-dashpot theory which has been applied in previous papers in this series to single fibers and to yarns is applied here to the experimental investi gations of a plush fabric which have been published by Fox and Schwarz. This serves to outline the experimental methods which should be followed if…
Abstract For small loadings (up to about 10 per cent volume parts) colloidal carbon-black spheres may be considered as suspended in a continuous rubber matrix. In the present paper this model is generalized for ellipsoidal (including plate-like and rodlike) filler particles, and it is extended to the computation of va…
A general theory of strain and stress compatibility in yielded metals is evolved from well-known experimental results and the Energy of Deformation Theory of Yield due to Huber, von Mises, and more recently Hencky.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpecific Heats at Low Temperatures of (NH4)2SO4, NH4Al(SO4)2 and NH4Al(SO4)2·12H2O1C. Howard ShomateCite this: J. Am. Chem. Soc. 1945, 67, 7, 1096–1098Publication Date (Print):July 1, 1945Publication History Published online1 May 2002Published inissue 1 July 1945https://pubs…
The oxides of cerium, yttrium, silicon, magnesium, and calcium were added in various proportions to zirconia of 99-percent purity, and the effects of these additions, combined with preheating at various temperatures ranging from 1,450 to 1,950 C, on thermal length changes of the zirconia during heating and cooling bet…
The theory of volume effect in photoelectric emission is developed. Formulae are derived for the rate of electron excitation and for the photoelectric yield. The calculated threshold frequencies for volume effect are 5.91\ifmmode\times\else\texttimes\fi{}${10}^{14}$ and 5.69\ifmmode\times\else\texttimes\fi{}${10}^{14}…
Abstract 1. Analysis shows that, subject to certain limitations, the modulus of a loaded stock (M * ) depends on the modulus of the rubber matrix ( M ), according to the equation: M * =M(1+2.5ϕ) where 100ϕ is the volume percentage of filler. When these limitations are fulfilled, the effect of compounding on modulus is…
Discussion and author's closure of paper 45–49 by J. S. Askey and J. S. Johnson, presented at the AIEE winter technical meeting, New York, N. Y., January 22–26, 1945, and published in AIEE TRANSACTIONS, 1945, June section, pages 347–51.
The instantaneous distribution of chain compositions and chain lengths in vinyl copolymers is obtained in a simple form valid for long chains. The compositions of chains of a given length are normally distributed about the mean value, with a standard deviation which can be calculated from experimentally observable qua…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTextile Fiber From Casein - Factors Affecting the Tensile StrengthR. F. Peterson, T. P. Caldwell, N. J. Hipp, R. Hellbach, and R. W. JacksonCite this: Ind. Eng. Chem. 1945, 37, 5, 492–496Publication Date (Print):May 1, 1945Publication History Published online1 May 2002Publis…
Closed analytical expressions are obtained for the shapes of the modified Compton lines scattered from the elements H to Ne, in atomic form. The widths of the Compton lines are calculated for these atoms, and conditions of resolution from the unmodified lines are obtained. Certain errors in other work on this subject…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpecific Heats at Low Temperatures of Al2(SO4)3, Al2(SO4)3·6H2O, KAl(SO4)2 and KAl(SO4)2·12H2O1C. Howard ShomateCite this: J. Am. Chem. Soc. 1945, 67, 5, 765–767Publication Date (Print):May 1, 1945Publication History Published online1 May 2002Published inissue 1 May 1945http…