Simplified analysis of a trifragment rotor disk interaction with a containment ring
Computerized analysis of shear failure at initial fragment collision during trifragment rotor disk interaction with containment rings
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Lithium Aluminum Hydride Analysis of Sulfur-Cured Vulcanizates
Abstract Since 1955 we have used lithium aluminum hydride for qualitative and quantitative analysis of the polysulfide content of various types of rubber vulcanizates. The first results were of qualitative or semiquantitative value, but by 1959 we felt that the method was revealing quantitative information. This work…
Pulse radiolysis studies of deaerated alcoholic solutions of alkali halides and potassium hydroxide
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPulse radiolysis studies of deaerated alcoholic solutions of alkali halides and potassium hydroxideShigeyoshi Arai, Akira Kira, and Masashi ImamuraCite this: J. Phys. Chem. 1970, 74, 10, 2102–2107Publication Date (Print):May 1, 1970Publication History Published online1 May 2…
Bismuth Phosphate Glasses
Homogeneous glasses are formed in the Bi 2 O 3 ‐P 2 O 5 system up to 35 mol% (63.8 wt%) Bi 2 O 3 . In property vs composition plots, the thermal expansion coefficient and tan δ exhibit minima, and hardness and activation energy for conduction show maxima at about 20 mol% Bi 2 O 3 . The deformation temperature of the g…
Anomalous temperature dependence of isotropic proton nuclear magnetic resonance shifts in paramagnetic chromium(II) and cobalt(II) complexes
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnomalous temperature dependence of isotropic proton nuclear magnetic resonance shifts in paramagnetic chromium(II) and cobalt(II) complexesGerd N. La Mar and Gerald R. Van HeckeCite this: J. Am. Chem. Soc. 1970, 92, 10, 3021–3028Publication Date (Print):May 1, 1970Publicati…
Creep and stress relaxation of natural rubber vulcanizates. Part I. Effect of crosslink density on the rate of creep in different vulcanizing systems
Abstract The physical creep of unfilled natural rubber vulcanizates, prepared with different vulcanizing systems, has been studied. For each of the three vulcanizing systems chosen there is a strong dependence of creep rate on crosslink density, but the rates for accelerated sulfur vulcanizates are two or three times…
The 5g Levels of the Alkali Metals
The wavelengths of the 4 f -5 g transitions of the alkali metals as emitted from a hollow-cathode lamp have been measured, and the term values derived from the observations are compared with those predicted by the polarization formula.
Electro-deposited copper in bismuth telluride
Observations have been made of the electrical conductivity as a function of time in single-crystal Bi 2 Te 3 during copper plating. The diffusion coefficient along the basal planes is so high that the copper is deposited internally. It has been found that there is a saturation effect which depends on the plating curre…
Beyond the one-electron approximation: Density of states for interacting electrons
Th e co nce pt " de n s it y of s ta tes" ca n be give n many differe nt mea nin gs wh e n we go beyond th e o nee lectron app rox imation. In thi s s ur vey we con ce ntrate on th e de fin iti o n ti e d to excit ati on pro cesses, wh e re one e lec tron is added or re mov e d from the solid. We di sc uss the o ne-pa…
Predetermination of Corona Losses Under Rain: Experimental Interpreting and Checking of a Method to Calculate Corona Losses
A new method of predetermining corona losses under rain is suggested. Instead of setting up empirical formulas based on experimenting according to customary proceedings, a quantitative analysis of the loss mechanism is discussed. In this way networks of losses which are valid for any kind of conductor or line are obta…
Effect of Crosslink Structure on Properties of Natural Rubber
Abstract Natural rubber-sulfur-diphenylguanidine vulcanizates were allowed to react with triphenylphosphine under nitrogen to convert polysulfidic crosslinks principally to di- and monosulfidic crosslinks and to assess the effect of this change in the chemical nature of the crosslinks on tensile strength, flex life, a…
Crystal and molecular structure of tetra-.mu.-thiobenzoato-dinickel(II)-ethanol, [Ni(PhCOS)2]2EtOH
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal and molecular structure of tetra-.mu.-thiobenzoato-dinickel(II)-ethanol, [Ni(PhCOS)2]2EtOHGordon A. Melson, Peter T. Greene, and Robert F. BryanCite this: Inorg. Chem. 1970, 9, 5, 1116–1122Publication Date (Print):May 1, 1970Publication History Published online1 May…
Solution Luminescence of Metal Complexes
An over-all view of the solution luminescence of metal complexes is given. The three major classes of emission are examined in moderate detail including brief discussions of theoretical considerations. These are attuned to the problem of predicting which metal ion—ligand combinations should form luminescent compounds.…
High-pressure synthesis of rare earth polysulfides
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh-pressure synthesis of rare earth polysulfidesAlan Wendell Webb and Howard Tracy HallCite this: Inorg. Chem. 1970, 9, 5, 1084–1090Publication Date (Print):May 1, 1970Publication History Published online1 May 2002Published inissue 1 May 1970https://pubs.acs.org/doi/10.102…
Semiconducting glasses part 1: Glass as an electronic conductor
Summary The formation and structure of glass is described and elementary wave-mechanics is used to show that, despite the disordered liquid-like configuration, electron energy-bands will nevertheless be formed in semiconducting glasses. The main effect of the disordered structure is to cause the formation of a high de…
Emittance of Oxide Layers on a Metal Substrate
The variation of total normal emittance as a function of oxide thickness on a metal sub strate is investigated experimentally for Al-Al2O3 and Cu-CuO systems. The measurements are made using a comparative black-body technique. Over the range of aluminumoxide thicknesses investigated (1.2μ–86.4μ) the total normal emitt…
Analysis of Exchange-Coupled Magnetic Thin Films
Presented in this paper are some new analytical results for two exchange-coupled magnetic thin films. The formulation of the problem which is used is similar to that of Goto et al., who reduced the determination of the magnetic configuration of the films in the presence of an external magnetic field to the evaluation…
Studies of the Dynamical Jahn-Teller Effect on Static Magnetic Susceptibility
Static magnetic susceptibilities of simplified model vibronic systems where non-Kramers paramagnetic ions in triplet ground state interact either with localized tetragonal modes of vibration with sharp frequency spectrum at ω (localized model), or with tetragonal modes composed of the superposition of phonons with con…
Sulfide Stress Corrosion Cracking of Steels
Critical nominal stress and critical stress intensity factors for sulfide stress corrosion cracking of various steels were determined using fatigue-precracked, laboratory, cantilever beam specimens and short lengths of oil field casing and tubing pressured to failure. The laboratory critical constants were found to be…
Studies on Regeneration of the Lizard's Tail
The present paper is concerned mainly with studies from my laboratory on regeneration of the lizard's tail. Over the past five years my students and I have focused our attention on: (1) a careful description of the histology of tail regeneration; (2) the role of neural elements (nerve and ependyma) in the initiation o…