Zur Kenntnis der Hydrosulfide und Hydroselenide der Alkalimetalle
Abstract 1. Die Hydrosulfide und Hydroselenide von Natrium, Kalium, Rubidium und Cäsium wurden analysenrein dargestellt.
Materials Literature
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Magnetic Studies of Solid Solutions. I. Methods of Observations and Preliminary Results on the Precipitation of Iron from Copper
This paper represents the first step in an extended program whose aim is the investigation of solid solutions with special reference to the structures that may be formed by heat treatment and plastic deformation. It is hoped to include eventually observations in high fields (100,000 gauss) and at low temperatures. The…
The Diffraction of X-Rays by Small Crystalline Particles
The problem of the diffraction of x-rays by small crystalline particles is discussed by the methods of Fourier analysis, and the calculation of the intensity of the x-ray scattering from a single particle is reduced to the evaluation of a simple Fourier transform. This approach leads immediately to the interference fu…
On the intensities of electron diffraction rings
Abstract The intensities of the rings formed when a beam of fast electrons is sent through a poly crystalline film were first studied by G. P. Thomson (1929) in the case of thin films of gold. The intensities were found to fit very well (Mott 1929) with those calculated theoretically on the assumption that the Laue th…
A Method for the Direct Determination of Crystal Structure from X-ray Data
Article A Method for the Direct Determination of Crystal Structure from X-ray Data was published on November 1, 1939 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 100, issue 1-6).
Kinetics of the Thermal Decomposition of Ethyl Formate
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of the Thermal Decomposition of Ethyl FormateR. F. Makens and W. G. EversoleCite this: J. Am. Chem. Soc. 1939, 61, 11, 3203–3206Publication Date (Print):November 1, 1939Publication History Published online1 May 2002Published inissue 1 November 1939https://pubs.acs.o…
THE EFFECT OF CLIMATIC EXPOSURE ON TEXTILE FIBRES AND FABRICS
S ummary Various textile fabrics were exposed to a wide range of climatic conditions. Those exposed to waterlogged conditions were destroyed rapidly. In the case of cellulose fabrics this destruction was due solely to bacteria, and not to fungi or actinomycetes. In the case of wool, the evidence of microbiological act…
Antiferromagnetism in Some Manganous Compounds
The temperature dependence (300\ifmmode^\circ\else\textdegree\fi{}K to 40\ifmmode^\circ\else\textdegree\fi{}K) of the magnetic susceptibility of the following ${\mathrm{Mn}}^{++}$ salts has been measured: MnO, MnS, MnSe, MnTe. A $\ensuremath{\lambda}$-point transition at low temperatures makes the susceptibility break…
Emissive and Thermionic Characteristics of Uranium
Certain properties of clean uranium in vacuum have been investigated. The following values were found: for emissivity below the melting point ($\ensuremath{\lambda}=0.67$\ensuremath{\mu}), 0.51; for thermionic work function, 3.27\ifmmode\pm\else\textpm\fi{}0.05 volts, with a Richardson $A$ of about 6; for melting poin…
DETERMINATION OF THE SPECIFIC SURFACE OF FIBROUS MATERIALS
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…
The Inorganic Composition of the Body Fluids of Three Marine Invertebrates
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…
Changes of Phase and Transformations of Higher Order in Monolayers
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-…
The Heat of Combustion of cis- and trans-Azobenzene
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…
Porphyrin Studies. III.1 The Structure of the Porphine2 Ring System
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…
Kristallstruktur und magnetisches Verhalten des metallischen Holmiums
Abstract 1. Holmium kristallisiert in hexagonal dichter Packung mit den Achsen a = 3,557 und c = 5,620.
The Polyhydric Alcohol-Polybasic Acid Reaction. IV. Glyceryl Phthalate from Phthalic Acid
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…
The Isoelectric Point of Collagen
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:/…
Notes on Atmospheric Sodium.
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…
Intercrystalline Thermal Currents as a Source of Internal Friction
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…
Electrophoretic Studies of Silk
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…