Materials Literature
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The adsorption of water vapor by co ll agen, commercial hide powder, and severa l leathe rs was determined at various relative humidities ranging from about 0 to 96 percent, at 28, 50, and 70 C. Determi nations were also made on chestnut a nd quebracho tann ins at 28 C at vari o us re lative humi dities. The results i…
Two classes of rare earth activated phosphors having interesting and unusual properties are described. The first series, consisting of alkaline earth silicates activated by divalent europium, shows a wide range of fluorescent colors when excited by 3650 Å radiation. Some of these compounds are characterized by the sta…
A slab with one surface cut and etched parallel to (100) crystallographic planes formed the cathode in a low power electron microscope. The electron image of the cathode was formed on a fluorescent screen with a small hole at the center. An electron collector placed behind the hole permitted a measure of the electron…
The physical properties of 2-mercapto benzimidazole and main methods for its preparation are introduced.The situations of production and demand for 2-mercapto benzimidazole in China and in Japan are described in brief. Meanwhile,the application fields of 2-mercapto benzimidazole as rubber antioxidant and pharmacy inte…
"Internal structure of granitic pegmatites." Geologiska Föreningen i Stockholm Förhandlingar, 72(3), pp. 361–362
The so-called “MOBA” or “Zostera-zone ” is a place of interest from the view-point of fishery in the inland sea. In Ikawazu-cove Zostera marina and Z. nana make “MOBA”, where the ecological studies on Zosterae has been carried out. In this paper the enviromental factors-hydrographycal and biological-which seem to corr…
M. T. Simnad and U. R. Evans, Trans. Faraday Soc., 1950, 46, 175 DOI: 10.1039/TF9504600175
T. A. Rafter, Analyst, 1950, 75, 485 DOI: 10.1039/AN9507500485
L. R. G. Treloar, Trans. Faraday Soc., 1950, 46, 783 DOI: 10.1039/TF9504600783
The assumption of a unimolecular layer as the surface phase separating a strictly regular solution from its vapour phase, is in contradiction with the Gibbs adsorption formula. When, however, one takes into account the possible presence of two unimolecular layers inside the surface phase, it is shown that the composit…
R. P. Linstead and F. T. Weiss, J. Chem. Soc., 1950, 2975 DOI: 10.1039/JR9500002975
Abstract Les auteurs décrivent la technique d'extraction adoptée pour le fractionnement du polythène après avoir exposé les difficultés expérimentales d'une détermination des courbes de polydispersité de ce polymère d'après les méthodes classiques de précipitation. Les trois échantillons étudiés ont des poids molécula…
The first page of this article is displayed as the abstract.
The first page of this article is displayed as the abstract.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNodular cast iron Corrosion.Mars G. Fontana.Cite this: Ind. Eng. Chem. 1950, 42, 1, 67–68Publication Date (Print):January 1, 1950Publication History Published online6 October 2008Published inissue 1 January 1950https://pubs.acs.org/doi/10.1021/ie50481a007https://doi.org/10.1…
Abstract Nous avons étudié deux carboxyméthylcelluloses ayant à peu près les mêmes caractéristiques moléculaires. Leur comportement rhéologique très différent s'explique par le fait qu'elles contiennent des proportions très différentes d'une fraction gonflant fortement dans l'eau mais insoluble. Cette fraction est par…
A series of aliphatic acids, amines, and esters, as well as one commercial corrosion inhibitor, were adsorbed from benzene solution onto SAE 1020 steel powder. These studies (reported elsewhere) showed that some portion of the sorbed material, depending on the compound, could not be desorbed by fresh solvent. The pres…
The energy distribution of the emission spectra of a number of calcium halophosphate phosphors has been determined on a recording spectroradiometer. These emission curves have been broken down into component bands, each of which has a Gaussian distribution of energy against wave number. An attempt is made to assign th…
An experimental investigation of the thermionic emission from oxide-coated cathodes is presented in which the applied voltage range extends from the retarding potential region through zero field and up to an average accelerating field of 50,000 volts per cm. The retarding potential range yields information concerning…
A theory of metallic delay dielectrics, which is more accurate than existing ones and is based on an analogy with shunt-loaded transmission lines, has been developed for the simplest case, when the delay medium consists of an array of infinitely long conducting strips. Formulae have been obtained for the refractive in…