R. Koningsveld、L. A. Kleintjens、A. R. Shultz1970-08-01Journal of Polymer Science Part A-2 Polymer Physics
Abstract Critical miscibility data obtained from measurements of phase‐volume ratios have been used to calculate the concentration dependence of the pair interaction parameter for the system polystyrene–cyclohexane. The measured temperature and concentration ranges are 11–30°C and 4–18% polymer by weight, respectively…
Phase Equilibria and ThermodynamicsMaterial Dynamics and PropertiesThermodynamic properties of mixtures
A W S Williams、E C Lightowlers、A T Collins1970-08-01Journal of Physics C Solid State Physics
Electrical conductivity and Hall effect measurements have been made on a series of synthetic p-type semiconducting diamonds in the temperature range 80 to 450K. The dominant conductivity mechanism at low temperatures is shown to be impurity conduction, and effects have been isolated due both to impurity-band conductio…
High-pressure geophysics and materialsDiamond and Carbon-based Materials ResearchForce Microscopy Techniques and Applications
R. D. Lipscomb、W. H. Sharkey1970-08-01Journal of Polymer Science Part A-1 Polymer Chemistry
Abstract The thioketo and thioenol tautomers of thioacetone have been separated by gas chromatography and characterized by infrared and NMR spectra at low temperatures. The pure thioketo tautomer polymerizes rapidly at room temperature, but the thioenol tautomer does not. At room temperature, the thioenol gradually di…
Epoxy Resin Curing ProcessesSynthesis and properties of polymersSilicone and Siloxane Chemistry
James W. Johnson、C. H.、C. K. Chen 等 4 位作者1970-08-01CORROSION
The anodic dissolution of Mo was studied in H2SO4-K2SO4 solutions (pH = 0.4-3.4) and K2SO4-K2CO3-KOH solutions (pH = 9.5-13.6) at 25 C (77 F). Faradaic efficiency studies showed the metal to be electrochemically oxidized to the Mo-VI state. Analysis of surface films and polarization measurements indicate the corrosion…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsElectrodeposition and Electroless Coatings
P. Axel、Kyungyoul Min、David C. Sutton1970-08-01Physical Review C
Photon scattering cross sections were measured with 70-keV resolution from 6 to 9 MeV in Sn, and from 8.5 to 12.5 MeV in Zr. A new method of analysis is used to infer relatively reliable total photon interaction cross sections. Both the elastic scattering and the total interaction cross sections vary more rapidly with…
Nuclear physics research studiesNuclear reactor physics and engineeringNuclear Materials and Properties
M. H. Brooker、D. E. Irish、G. E. Boyd1970-08-01The Journal of Chemical Physics
Infrared and Raman spectra have been recorded for room-temperature phase powdered samples of Ca(NO3)2, Sr(NO3)2, Ba(NO3)2, and Pb(NO3)2. The spectra are interpreted in terms of a factor group analysis. Considerable multiplet band structure is reported for the first time.
Luminescence Properties of Advanced MaterialsNonlinear Optical Materials ResearchSolid-state spectroscopy and crystallography
Richard Silberglitt、J. B. Torrance1970-08-01Physical review. B, Solid state
We consider the scattering of two spin waves in a uniaxial (easy axis) Heisenberg ferromagnet with single-ion anisotropy. The two-spin-deviation problem is solved exactly at zero temperature. We find (for $S>\frac{1}{2}$), in addition to the usual two-spin-wave bound states, a new "single-ion bound state," in which…
Magnetism in coordination complexesAdvanced NMR Techniques and ApplicationsMagneto-Optical Properties and Applications
Goro Yamaguchi、Itaru Yasui、Wen-Chau Chiu1970-08-01Bulletin of the Chemical Society of Japan
Abstract Highly crystallized θ-alumina was obtained by a two-step treatment, by hydrothermal and thermal treatment, of η-alumina. Its X-ray-powder diffraction pattern was interpreted based on the structure of θ-gallia, and least-squares refinements were carried out. The electron diffraction pattern of θ-alumina from b…
Advanced ceramic materials synthesisZeolite Catalysis and SynthesisMicrowave Dielectric Ceramics Synthesis
Rodney Grahame1970-08-01Clinical Science
1. A method is presented for the measurement of the elasticity of human skin in vivo. A simple suction cup device is applied to the intact skin and the distortion produced in response to pre-determined negative pressures recorded. By the use of appropriate formulae stress and strain may be calculated and a stress/stra…
Skin Protection and AgingThermoregulation and physiological responsesTextile materials and evaluations
J.A. Rinde1970-08-01Journal of Applied Polymer Science
Abstract Poisson's ratio for several low‐density plastic foams has been determined in both tension and compression. For polystyrene bead foams and a polyurethane foam, Poisson's ratio is greater in tension than compression. In compression, Poisson's ratio is not linear, showing a larger value below the yield strain an…
Polymer Foaming and Composites
S.D. Ross1970-08-01Journal of Physics C Solid State Physics
Crystallographic studies of Ba 2 NaNb 5 O 15 have shown that the possible space groups are D 6 2 , C 11 2v and D 19 2h . The coincidences between the infrared and Raman spectra support the conclusion, based on the ferroelectric properties of the crystal, that the space group is C 11 2v . The anomalous tantalum compoun…
Ferroelectric and Piezoelectric MaterialsGlass properties and applicationsMicrowave Dielectric Ceramics Synthesis
M. A. Saifi、L. E. Cross1970-08-01Physical review. B, Solid state
The dielectric properties of annealed single crystals of SrTi${\mathrm{O}}_{3}$ have been measured over the temperature range from 5 to 300 \ifmmode^\circ\else\textdegree\fi{}K. At temperatures below 50 \ifmmode^\circ\else\textdegree\fi{}K, electric double hysteresis loops are observed and associated changes in weak-f…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsDielectric properties of ceramics
G. Schaack、J. A. Koningstein1970-08-01Journal of the Optical Society of America
Laser-excited Raman spectra have been observed in single crystals of Y2O3, Y2O3(Eu3+), Er2O3, and YB2O3 at 10, 80, and 300 K. In Y2O3(Eu3+) the symmetries of the excited levels have been determined. The optically active phonons can be separated into two groups; in one group (above 300 cm−1) the internal vibrations of…
Luminescence Properties of Advanced MaterialsGlass properties and applicationsNuclear materials and radiation effects
C S G Cousins1970-08-01Journal of Physics C Solid State Physics
The formalism is developed for determining the band-structure contributions to the first- and second-order elastic shear constants of hexagonal close-packed metals in terms of the normalized energy-wavenumber characteristic of the optimized model potential theory. A method of calculating the internal strain or inner d…
Intermetallics and Advanced Alloy PropertiesBoron and Carbon Nanomaterials ResearchMetallurgical and Alloy Processes
M. K. Hargreaves、J. G. Pritchard、Harshad Dave1970-08-01Chemical Reviews
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCyclic carboxylic monoimidesMichael K. Hargreaves, J. G. Pritchard, and H. R. DaveCite this: Chem. Rev. 1970, 70, 4, 439–469Publication Date (Print):August 1, 1970Publication History Published online1 May 2002Published inissue 1 August 1970https://pubs.acs.org/doi/10.1021/cr…
Synthesis and properties of polymersSynthesis and Reactions of Organic Compounds
P. Eisenberger、P. M. Platzman1970-08-01OpenAlex
Exact and approximate methods for determining the momentum distribution of electronic systems from Compton scattering measurements are presented. The method used previously to analyze Compton scattering measurements, the impulse approximation (IA), is derived from first principles, and its accuracy is compared with th…
Advanced Chemical Physics StudiesNuclear Physics and ApplicationsElectron and X-Ray Spectroscopy Techniques
J. W. Matthews、Sebastian Mäder、T. B. Light1970-08-01OpenAlex
Misfit dislocations are often transported to the interface between crystals by glide. In materials with the diamond or sphalerite structures, glide is inhibited by the Peierls stress. The aim of this paper is to present a theory for misfit accommodation which includes the effect of the Peierls stress. It is used to ex…
Thermal properties of materialsAdvanced Semiconductor Detectors and MaterialsSemiconductor materials and interfaces
F. Tuinstra、Jack L. Koenig1970-08-01OpenAlex
Raman spectra are reported from single crystals of graphite and other graphite materials. Single crystals of graphite show one single line at 1575 cm−1. For the other materials like stress-annealed pyrolitic graphite, commercial graphites, activated charcoal, lampblack, and vitreous carbon another line is detected at…
Silicon and Solar Cell TechnologiesFiber-reinforced polymer compositesGraphite, nuclear technology, radiation studies
J. Boon、E. P. Magré1970-07-30Die Makromolekulare Chemie
Abstract Poly(2,6‐diphenyl p ‐phenylene oxide) exists in at least two crystalline modifications. One modification can be obtained by crystallization from solution or by thermal crystallization of undiluted polymer. The other modification, however, can only be obtained by crystallization from solution. The solvent, e.…
Conducting polymers and applicationsInorganic and Organometallic ChemistrySynthesis and properties of polymers
Leonard Liebermann、J. Clinton、D. M. Edwards 等 4 位作者1970-07-27Physical Review Letters
Magnetically "dead" layers, previously observed in iron films at room temperature, are observed in nickel. From the temperature dependence of this effect it is deduced that two dead layers persist at $T=0$, independent of the film thickness. Existing theories of magnetic thin films are unable to account for these obse…
Magnetic properties of thin filmsTheoretical and Computational PhysicsMagnetic Properties and Applications