Materials Literature
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The Kozeny equation relating specific surface and permeability of a bed of unconsolidated particles has been shown to be applicable to fibrous materials such as glass, wool, and celanese. The diameters of the constituent fibre may be as small as 0.0006 cm., while their ratio of length to diameter may be indefinitely l…
ABSTRACT Analyses have been made of the body fluids of Echinus esculentus, and two decapod Crustacea, Homarus vulgaris and Cancer pagurus, before and after dialysis with sea water in which they were living. The composition of the perivisceral fluid of Echinus is identical with that of seawater, complete physico-chemic…
The gaseous, liquid, mesomorphous and solid states in monolayers are defined and their close connection with the corresponding states in three dimensions rigorously established. This involves a new treatment of the two-dimensional liquid and of its transformation to the mesomorphous state. The properties of the three-…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Heat of Combustion of cis- and trans-AzobenzeneR. J. Corruccini and E. C. GilbertCite this: J. Am. Chem. Soc. 1939, 61, 10, 2925–2927Publication Date (Print):October 1, 1939Publication History Published online1 May 2002Published inissue 1 October 1939https://pubs.acs.org…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPorphyrin Studies. III.1 The Structure of the Porphine2 Ring SystemPaul. RothemundCite this: J. Am. Chem. Soc. 1939, 61, 10, 2912–2915Publication Date (Print):October 1, 1939Publication History Published online1 May 2002Published inissue 1 October 1939https://pubs.acs.org/do…
Abstract 1. Holmium kristallisiert in hexagonal dichter Packung mit den Achsen a = 3,557 und c = 5,620.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Polyhydric Alcohol-Polybasic Acid Reaction. IV. Glyceryl Phthalate from Phthalic AcidR. H. Kienle, P. A. van der. Meulen, and F. E. PetkeCite this: J. Am. Chem. Soc. 1939, 61, 9, 2268–2271Publication Date (Print):September 1, 1939Publication History Published online1 May…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Isoelectric Point of CollagenJohn H. HighbergerCite this: J. Am. Chem. Soc. 1939, 61, 9, 2302–2303Publication Date (Print):September 1, 1939Publication History Published online1 May 2002Published inissue 1 September 1939https://pubs.acs.org/doi/10.1021/ja01878a010https:/…
It is suggested that sodium atoms in the high atmosphere may have a long, though intermittent, free life, despite frequent combination with oxygen atoms to form IVaO, through the reaction NaO + 0 = Na + 02. The source of energy of the light emitted by sodium at night is ascribed to the dissociation energy of oxygen. T…
An experiment has been designed to detect the contribution of intercrystalline thermal currents to the internal friction of polycrystalline metals. In accordance with a theory developed by one of the writers (C.Z.), the internal friction is a maximum when the vibration is partly isothermal and partly adiabatic with re…
A micro-electrophoretic technique was used to determine the characteristic pH-mobility curves for fibroin and for sericin and to ascertain the extent of removal of the latter during degumming by the soap and enzyme processes. The data suggest that sericin contains a much greater proportion of reactive groups than fibr…
ABSTRACT Explanations of origin are reviewed and environments in which black muds are in process of deposition are considered. The causes of blackness are examined and attention is given to diagenetic processes that take place in black muds. It is concluded that colors of black muds are due to several components, of w…
Richard H. Fleming; The Control of Diatom Populations by Grazing*), ICES Journal of Marine Science, Volume 14, Issue 2, 1 August 1939, Pages 210–227, https://do
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAdhesion of Neoprene to MetalFelix L. YerzleyCite this: Ind. Eng. Chem. 1939, 31, 8, 950–956Publication Date (Print):August 1, 1939Publication History Published online1 May 2002Published inissue 1 August 1939https://pubs.acs.org/doi/10.1021/ie50356a007https://doi.org/10.1021…
In the determination of the structure of a crystal with x-rays, it is essential that a reliable set of diffraction intensity data be obtained. During its passage through the crystal, the x-ray beam suffers a diminution in intensity due to absorption by the crystal itself, and the \nextent of this absorption will i…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Rearrangement of the Xylenes by Aluminum ChlorideJames F. Norris and Gordon T. VaalaCite this: J. Am. Chem. Soc. 1939, 61, 8, 2131–2134Publication Date (Print):August 1, 1939Publication History Published online1 May 2002Published inissue 1 August 1939https://pubs.acs.org…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTArrangement of Substituents in Cellulose DerivativesH. M. SpurlinCite this: J. Am. Chem. Soc. 1939, 61, 8, 2222–2227Publication Date (Print):August 1, 1939Publication History Published online1 May 2002Published inissue 1 August 1939https://pubs.acs.org/doi/10.1021/ja01877a07…
Abstract The iron-nickel-aluminium ternary system has been brought into prominence in recent years on account of its application in the permanent magnet industry. A study of some magnetic properties of this system has been made by Köster (1932-3), but his work is largely concerned with features other than those dealt…
This paper deals with the variation of a-c conductivity with frequency and with that of apparent d-c conductivity with charging time for dielectrics exhibiting anomalous dispersion (i.e., having dielectric constants which decrease with increasing frequency). The a-c conductivity of a dielectric exhibiting simple anoma…
The self-diffusion of copper has been measured with a radioactive isotope prepared by neutron bombardment of zinc. The isotope is electroplated in a thin layer upon the surface of a copper disk. By measuring the decrease in $\ensuremath{\beta}$-ray emission from the sample due to the penetration of the radioactive cop…