267. Oxidation by persulphate. Part II. Oxidation effects with a methyl group and some substituted methyl groups on a benzene nucleus
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A study of thermal degradation and oxidation of polymers by infrared spectroscopy. Part I. Experimental technique and butylated melamine formaldehyde and urea formaldehyde
This is the first of a series of papers concerned with the general problem of thermal degradation and oxidation of polymers. Part I consists of a description of the technique used and the results obtained on butylated melamineformaldehyde and urea-formaldehyde resins. The course of the degradation and/or oxidation is…
Precise Measurement of Density and Surface Tension at Temperatures up to 1000°C in one Apparatus
A method for the precise measurement of surface tension and density of molten salts in one apparatus at temperatures up to 1000°C is reported. The essential features of the apparatus are a density bob of special design to enable surface tension data to be obtained simultaneously, and a continuously variable height cru…
Wet and Dry Deposition of Fallout Materials at Kjeller
Daily measurements of fallout air activity and deposited activity at Kjeller, Norway, from I Sept. 1956 to 30 Sept. 1959 are given as monthly means for days with and without obvious precipitation. It seems that significant concentrations of fallout particles reach the earth about 3 months after high-yield test explosi…
STATISTICAL PROPERTIES OF ATOMIC AND NUCLEAR SPECTRA
A brief survey was presented of the experimental data on the distributions of the neutron widths of nuclear finestructure levels and of the nearest-neighbor spacings for both atomic and nuclear energy levels. Random- matrix mcdels to predict these data were discussed both analytically (in all possible cases) and via M…
Octahedral complexes. Part 2.—The calculation of spin-orbit coupling energies
J. S. Griffith, Trans. Faraday Soc., 1960, 56, 193 DOI: 10.1039/TF9605600193
The Dynamic Behavior of Thermoelectric Devices
Abstract not Available.
The Structure of Bismuth at Low Temperatures
A precision determination of the displacement parameter of zone-refined bismuth containing less than 0�3 parts per million of spectroscopically detectable impurity has been carried out as a function of temperature. Procedures were used that minimize uncertainties in integrated intensities due to extinction, absorption…
Preparation and Refining of Yttrium Metal by Y-Mg Alloy Process
Yttrium metal was prepared by the reduction of YF 3 with calcium forming a low melting Y‐Mg intermediate alloy. Magnesium was removed by sublimation to produce yttrium metal sponge. A method is described for removing oxygen and fluorine from the alloy by extraction with fused yttrium salts. The results of electron bea…
33. Phthalocyanine crystal spectra
L. E. Lyons, J. R. Walsh and J. W. White, J. Chem. Soc., 1960, 167 DOI: 10.1039/JR9600000167
Studies on Lead Silicate Melts
Studies on the constitution of silicate melts are very important not only in the fields of metallurgical processing or the glass industry, but also in dealing with the properties or constitution of liquids. For this reason a PbO-SiO2 system was chosen as a model of silicate or slag because of its low melting point and…
Nonuniform Field Effects in Poorly Conducting Media
A simplified theory of the behavior of suspended polymer particles in a real liquid dielectric is presented. It is becoming well known that nonuniform fields exert an attractive force of interesting magnitude on particles of high dielectric constant suspended in a liquid medium of lower dielectric constant. In a real…
Réactions (p, xn) induites dans l'or par des protons de 155 MeV
Nous avons étudié les sections efficaces des réactions (p, xn) pour la formation des isotopes du mercure, de masse comprise entre 197 et 188, séparés par déviation magnétique. Nous avons identifié, mesuré les périodes et l'énergie des principales raies γ des 190Hg, 189Hg, 188Hg et de leurs descendants.
212. Dithiols. Part XXI. Dithiols from cyclic trithiocarbonates
S. M. Iqbal and L. N. Owen, J. Chem. Soc., 1960, 1030 DOI: 10.1039/JR9600001030
THE CHEMISTRY OF BORAZINE. III. B-SILYL BORAZINES
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE CHEMISTRY OF BORAZINE. III. B-SILYL BORAZINESA. H. Cowley, H. H. Sisler, and G. E. RyschkewitschCite this: J. Am. Chem. Soc. 1960, 82, 2, 501–502Publication Date (Print):January 1, 1960Publication History Published online1 May 2002Published inissue 1 January 1960https://…
Studies in Lithium Oxide Systems: VII, Li 2 O–B 2 O 2 –SiO 2
Phase relations in the system Li 2 O–B 2 O 3 –SiO 2 were studied by quenching and solid‐state reactions. No ternary compounds were detected in the portion of the system containing less than 53% Li 2 O. Compatibility triangles were formed from the binary borate and silicate compounds. Liquidus data obtained by quenchin…
The crystal structure of zunyite
Zunyite, a rare aluminosilicate mineral of composition (OH, F)18Al13Si5O20Cl, has an unusual structure built up of Si5O16 groups of linked silicon tetrahedra and aluminium-oxygen groups of linked octahedra. The structure proposed by Pauling is verified and refined by X-ray methods, using 163 (hkO) reflections from sin…
Lineare und cyclische Oligomere
Abstract Zusammenfassend wird über die Grundlagen der Oligomerenchemie und ihre Bedeutung für die makromolekulare Chemic berichtet, also über Synthese, Eingenschaften, Vorkommen und Isolierung aus Polykondensaten sowie das Verhalten unter Polymerisationsbedingungen; insbesondere an Hand von eigenen Arbeiten auf dem Ol…
1007. Anionic polymerization of styrene: conductivity measurements
D. J. Worsfold and S. Bywater, J. Chem. Soc., 1960, 5234 DOI: 10.1039/JR9600005234
A Structural Study of Talc and Talc‐Tremolite Relations
About forty specimens of talc have been examined by X‐ray powder methods. Variations in the degree of crystallinity of the mineral have been observed, but no evidence has been obtained for polymorphic structural varieties. Single‐crystal data have confirmed the two‐layer mono‐clinic cell. Little evidence has been obta…