160. Symmetrical dicarbocyanines having a methyl group as substituent on the chain
F. M. Hamer and R. J. Rathbone, J. Chem. Soc., 1945, 595 DOI: 10.1039/JR9450000595
Materials Literature
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Lowering of the Photoelectric Work Function of Zirconium, Titanium, Thorium and Similar Metals by Dissolved Gases
It is well known that the photoelectric threshold of certain metals such as cesium, barium, thorium, etc., is shifted toward the longer wave length when the metal reacts with oxygen. This is generally attributed to the formation of a monomolecular layer of the active element on another metal or on an oxide. This paper…
LEWIS ACID‐BASE THEORY APPLIED TO GLASS*
A bstract According to the Lewis theory of acids and bases, glass formers, such as SiO 2 , B 2 O 3 , P 2 O 5 , BeF 2 , GeS 2 , etc., may be classified as acids because they are electron‐pair acceptors in glass reactions and the modifiers, Na 2 O, CaO, NaF, Na 2 S, etc., are bases because they are electron‐pair donors;…
Corrosion of Metals by Organic Acids in Hydrocarbon Solvents
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCorrosion of Metals by Organic Acids in Hydrocarbon SolventsC. F. Prutton, D. R. Frey, D. Turnbull, and G. DlouhyCite this: Ind. Eng. Chem. 1945, 37, 1, 90–100Publication Date (Print):January 1, 1945Publication History Published online1 May 2002Published inissue 1 January 19…
The atomic arrangement in solid sodium nitrate at high temperatures
Abstract Different possibilities for the arrangement and the constitution of the NO 3 ‐group in the high temperature modification of solid sodium nitrate are considered. From the intensities on X‐ray diagrams both from a powder and from a rotating crystal taken at a temperature just below the melting point of sodium n…
Water, Electrolyte and Nitrogen Content of Human Skin
Total water, nitrogen, collagen nitrogen, and electrolyte concentrations were determined in human skin which was removed at once from amputated parts during the course of surgery. The total skin (corium plus epidermis) gave the mean average results which are expressed as units per kilo of fat-free skin: total water, 7…
Studies in the Comparative Morphology of the Algae IV. Algae and Archegoniate Plants With twenty-two Figures in the Text1
F. E. FRITSCH; Studies in the Comparative Morphology of the Algae IV. Algae and Archegoniate Plants With twenty-two Figures in the Text1, Annals of Botany,
127. Studies in light absorption. Part I. p-Benzoquinones
E. A. Braude, J. Chem. Soc., 1945, 490 DOI: 10.1039/JR9450000490
Comparison of the Structures of Stretched Linear Polymers
Published x-ray data from crystalline selenium and tellurium and from stretched sulfur (amorphous), polyethylene, polyisobutylene, polyvinyl alcohol, polyvinyl chloride, polyvinylidine chloride, polyoxymethylene, polyoxyethylene, polyethylene disulfide, polyethylene tetrasulfide, and polyphosphonitrile chloride are co…
Bedeutung beschränkt freier Drehbarkeit für die Viskosität und Strömungsdoppelbrechung von Fadenmolekellösungen I
Helvetica Chimica ActaVolume 28, Issue 1 p. 1533-1579 Article Bedeutung beschränkt freier Drehbarkeit für die Viskosität und Strömungsdoppelbrechung von Fadenmolekellösungen I Werner Kuhn, Werner Kuhn Physikalisch-Chemische Anstalt der Universität BaselSearch for more papers by this authorHans Kuhn, Hans Kuhn Physikal…
164. The crystal structure of coronene: a quantitative X-ray investigation
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The dielectric constant of crystalline powders
Abstract A formula is derived with the aid of which it is possible to compute the dielectric constant of a compact crystal from that of a crystalline powder. The formula is checked by means of experimental data.
Theory of Filler Reinforcement
For small loadings (up to about 10 percent volume parts) the 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- and rod-like) filler particles and it is extended to the computation of various prop…
A resonant-cavity method for measuring dielectric properties at ultrahigh frequencies
A re-entrant cylindrical cavity has been adapted to measure the dielectric constant and power factor of small disk samples of insulating materials. The methods of measurement, mechanical details, and electric coupling and detecting circuits all are described. A single cavity can be utilized only over a frequency range…
An apparatus for the determination of surface and interfacial tension
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn apparatus for the determination of surface and interfacial tensionOtto F. Steinbach Cite this: J. Chem. Educ. 1944, 21, 12, 582Publication Date (Print):December 1, 1944Publication History Received3 August 2009Published online1 December 1944Published inissue 1 December 194…
Stress-Strain Data for Vulcanized Rubber under Various Types of Deformation
Abstract Stress-strain data are given for two types of vulcanized rubber: (1) an 8% S rubber, and (2) a latex rubber. The types of deformation studied were simple elongation, 2-dimensional extension (or compression), pure shear, and combined elongation and shear. Comparison with the theoretical relations based on the…
Epoxidation of Oleic Acid, Methyl Oleate and Oleyl Alcohol with Perbenzoic Acid
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEpoxidation of Oleic Acid, Methyl Oleate and Oleyl Alcohol with Perbenzoic AcidDaniel Swern, Thomas W. Findley, and John T. ScanlanCite this: J. Am. Chem. Soc. 1944, 66, 11, 1925–1927Publication Date (Print):November 1, 1944Publication History Published online1 May 2002Publi…
The Variation with Temperature of the Dynamic Properties of Rubber and Synthetic Rubber-like Materials
Two mechanical properties of rubber-like materials relevant to the design of anti-vibration devices are the dynamic elastic compression modulus and the associated resilience. A method is described for the evaluation of these properties over the temperature range 5° to 40° C. Results are given for natural rubber, for t…
VOLUME CHANGE ATTENDING LOW‐TO‐HIGH INVERSION OF CRISTOBALITE *
A bstract The volume expansion of cristobalite, as it passes through the low‐temperature inversion range, was studied by means of a dilatometer in which the cristobalite expanded against a column of mercury. The volume change was measured in a capillary tube attached to the mercury column. The temperature of inversion…
PROPERTIES OF SOME VYCOR‐BRAND GLASSES *
A bstract Physical and chemical properties are discussed for Vycor‐brand 96% silica glasses prepared from glasses of lower silica content by a leaching process, and a brief résumé of this process is given. The intermediate porous glass and a translucent or white opaque form of the final 96% silica glass made by the Mu…