Mass differences and Lie Algebras of Finite Order
Received 24 February 1965DOI:https://doi.org/10.1103/PhysRevLett.14.575©1965 American Physical Society
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Optical Properties of Graphite
The complex dielectric constant $\ensuremath{\epsilon}(\ensuremath{\omega})={\ensuremath{\epsilon}}_{1}+i{\ensuremath{\epsilon}}_{2}$ and associated functions are derived by application of the Kramers-Kronig relation to reflectance data for graphite obtained in the energy range to 26 eV. It is possible to divide the o…
Sulfur group analysis in unaccelerated vulcanization of natural rubber
Abstract The reaction of lithium aluminum hydride forming mercaptan with disfulfides and mercaptan as well as hydrogen sulfide with polysulfides has been applied in order to characterize the structure of the crosslinks in the case of unaccelerated vulcanization of natural rubber with sulfur. The mercaptans formed were…
Spunbonded Products—A New Concept in Utilization of Fibrous Materials
The principal structural features of spunbonded products are described, and these structural features are related to physical properties. of the materials and to textile performance.
The measurement of thermoelectric properties at high temperatures
This paper describes an apparatus which was designed for the evaluation of high temperature thermoelectric materials; it enables rapid measurement to be made of the factors controlling thermoelectric figure of merit, these being thermal conductivity, Seebeck coefficient and electrical resistivity, over the temperature…
High Silica Glass, Quartz, and Vitreous Silica
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Jerome S. Laufer, "High Silica Glass, Quartz, and Vitreous Silica," J. Opt. Soc. Am. 55, 458-460 (1965) Export Citation BibTex Endnote (RIS) HTML Plain…
Co‐Ordination state of aluminium ions in CaO–Al2O3–SiO2 glasses
Abstract The state of co‐ordination of aluminium ions in synthetic glasses in the system CaO–Al 2 O 3 –SiO 2 was studied by determining the effects of varying the alumina content (from 1 to 7 moles) on the density and refractive index of glasses of composition 10 CaO, 8 SiO 2 , n ‐Al 2 O 3 (CaO/SiO 2 ratio 1.17:1). Th…
Stress relaxation of polytetrafluoroethylene in the vicinity of its glass transition temperature at about 130°C.
Abstract Measurements of compressive stress relaxation for molded polytetrafluoroethylene were carried out at different temperatures over the range 60–150°C., at 5°C. increments under a small strain (less than 0.3%). By the application of the so‐called Ferry's reduction method, three master curves were obtained with g…
Meso-ionic Compounds of the 1,3-Dithiole Ring System
Masaki Ohta, Masatoshi Sugiyama; Meso-ionic Compounds of the 1,3-Dithiole Ring System, Bulletin of the Chemical Society of Japan, Volume 38, Issue 4, 1 Apr
Phenomenology of Noncrystalline Microphase Separation in Glass
Time‐temperature characteristics were established for the formation of a silica‐rich glassy microphase in a silicate glass. Plots of temperature versus nucleation time produced curves similar to those determined by Hillig for a glass‐crystal transformation. These experiments showed that a nucleation step was required…
Electronic conduction in polymers. V. Aromatic semiconducting polymers
Electronically conducting polymers have been prepared by treating hexa- chlorobenzene with sodium at 300°, using sodium chloride as a diluent. The products, presumably polybenzenes, have resistivities of 0.2-25 ohm cm depending on the amount of sodium used; less crosslinked polymers similarly prepared from 1,2,4-tri-c…
Catalytic Dissociation of Nitrogen Dioxide
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCatalytic Dissociation of Nitrogen DioxideL. L. Wikstrom and Ken NobeCite this: Ind. Eng. Chem. Process Des. Dev. 1965, 4, 2, 191–195Publication Date (Print):April 1, 1965Publication History Published online1 May 2002Published inissue 1 April 1965https://pubs.acs.org/doi/10.…
Catalyzed Nitric Oxide Reduction with Carbon Monoxide
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCatalyzed Nitric Oxide Reduction with Carbon MonoxideR. A. Baker and R. C. DoerrCite this: Ind. Eng. Chem. Process Des. Dev. 1965, 4, 2, 188–191Publication Date (Print):April 1, 1965Publication History Published online1 May 2002Published inissue 1 April 1965https://pubs.acs.…
An electron microscope study of radiation damage in single crystal graphite
Single crystals of graphite have been irradiated with neutrons to doses of up to 7·6 × 1019 n.v.t. (Ni) at temperatures up to 900°c and examined in the electron microscope. The damage is resolved on irradiation at temperatures of ∼250°c, and consists essentially of interstitial dislocation loops. Only a few per cent o…
Internal Stress of Evaporated Thin Gold Films
The character of a planar tensile stress (observed) in evaporated gold films has been investigated by means of bending method and X-ray diffraction. It has been found that stress increases with increasing film thickness in films thinner than 1000 Å and approaches to a certain values of the order of 10 9 dyn/cm 2 in th…
Degradation and stabilization of polyacetal copolymers
Abstract Acetal copolymers prepared from trioxane and ethylene oxide consist of polyoxymethylene segments with oxyethylene units distributed in the chain. These oxyethylene units profoundly affect the thermal and chemical behavior of the polymer. The presence of the oxyethylene units renders the copolymer amenable to…
The crystal structure of Li2SO4.H2O. A three-dimensional refinement
The structure of LizSO4. H20 has been refined by the method of least squares with three-dimensional X-ray diffraction data measured by counter techniques from an approximately spherical crystal. Unitcell dimensions are a=5.454, b=4857, c=8.173 /~, and fl=107 22, and the space group is P21. Although a final R of 38 % w…
Polarized Spectra of Tetracyano Nickelate Crystals
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolarized Spectra of Tetracyano Nickelate CrystalsC. J. Ballhausen, N. Bjerrum, R. Dingle, Klaas Eriks, and C. R. HareCite this: Inorg. Chem. 1965, 4, 4, 514–518Publication Date (Print):April 1, 1965Publication History Published online1 May 2002Published inissue 1 April 1965…
Effects of Radiation on Materials and Components
"Effects of Radiation on Materials and Components." Nuclear Science and Engineering, 21(4), pp. 588–589
Reactions catalyzed by minerals. Part I. Polymerization of styrene
Abstract The polymerization of styrene on neutral mineral surfaces has been studied. It has been shown that the polymerization has characteristics expected for both a radical and cationic reaction, and a mechanism involving a radical‐carbonium ion is proposed to explain this evidence. A range of mineral catalysts have…