Thermodynamics of Parabolic Time Rate Law of Oxidation of Metals
The Wagner equation for the isothermal oxidation of metals is re-established. One of the assumptions used in deriving the equation is removed.
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Fractionation and determination of molecular characteristics of elastomers. I. Neoprene W
In this study of Neoprene W, it has been possible to show that this elastomer possesses a fairly wide distribution of molecular weights and presents some degree of branching. The relationship \documentclass{article}\pagestyle{empty}\begin{document}$\left[ {\bar \eta } \right]$\end{document} = 2.90 × 10−3M has been est…
N,N‐dialkylamides of long chain fatty acids as plasticizers
Abstract A number of N,N‐dialkylamides have been prepared, characterized and evaluated as plasticizers for poly (vinyl chloride‐vinyl acetate) copolymer. Among these are the N‐oleoyl derivatives of diisopropyl, dibutyl, diisobutyl, diamyl, dihexyl, diheptyl, dioctyl, di‐2‐ethylhexyl and didecylamines. Also included ar…
Effect of Environment on the Unimolecular Decay of the Triplet State
Lifetimes and relative quantum yields of phosphorescence were measured over the temperature range −10° to −196°C for solutions of palladium (II) mesoporphyrin IX, dimethyl ester, and ρ-phenylbenzophenone in methylphthalylethylglycolate. The observed variation in the rate constants for the unimolecular decay of the tri…
Triosephosphate Isomerase of Pea Seeds
Donella H. Turner, E. S. Blanch, Martin Gibbs, J. F. Turner; Triosephosphate Isomerase of Pea Seeds 12, Plant Physiology, Volume 40, Issue 6, 1 November 19
Lowest-Order Contribution to the Lattice Thermal Conductivity
In a previous paper the correlation function formula for the thermal conductivity was used to derive equations for the lowest-order contribution to the lattice thermal conductivity Kij. An explicit but formal solution of these equations is obtained here, and it is shown how this solution simplifies in the limit of inf…
Dynamical Dislocation Theory of Crystal Plasticity. II. Easy Glide and Strain Hardening
Mathematical descriptions of the stress-strain-time behavior of plastic crystals are developed using a statistical approach to dislocation dynamics. First, the ``easy-glide'' portions of stress-strain curves are described in terms of glide band propagation. Then, three models of strain hardening are developed and used…
Transmittance of Optical Materials at High Temperatures in the 1-μ to 12-μ Range
Transmittance measurements of optical materials were made at 25°C, 100°C, 200°C, 300°C, and 400°C in the 1-μ to 12-μ range with a Perkin-Elmer Model 21 spectrophotometer. A continuous proportioning temperature control system, using a modified Loyola LC-2 4KVA Power Manipulator in conjunction with a Wheelco Capacitrol,…
The breakdown of the air-formed oxide film on iron upon immersion in solutions of pH 6–13
The breakdownof the air-formed oxide film on iron is greater upon immersion in corrosive than inhibitive solutions; it is retarded by dissolved oxygen and in some solutions marginally affected by the age, or thickness,of the film. The breakdown is not due to direct solution, as with aluminium, but to reductive dissolu…
Pressure Dependence of the Dielectric Constant of Strontium Titanate
The effect of pressure, up to 50 kbar, on the low-frequency dielectric constant $\ensuremath{\epsilon}$ of SrTi${\mathrm{O}}_{3}$ has been measured at 25\ifmmode^\circ\else\textdegree\fi{}C. $\ensuremath{\epsilon}$ decreases with increasing pressure according to the relation $\ensuremath{\epsilon}=\frac{{C}^{*}}{(p\en…
Die Absorption der Röntgenstrahlen im Dreistrahlfall der Interferenz
Article Die Absorption der Röntgenstrahlen im Dreistrahlfall der Interferenz was published on November 1, 1965 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 121, issue 1-6).
The Preparation and Properties of Some Tetracoordinate Boron Compounds. The Pseudo-Metal Ion Concept
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Preparation and Properties of Some Tetracoordinate Boron Compounds. The Pseudo-Metal Ion ConceptL. H. Toporcer, R. E. Dessy, and S. I. E. GreenCite this: Inorg. Chem. 1965, 4, 11, 1649–1655Publication Date (Print):November 1, 1965Publication History Published online1 May…
Oxygen Stoichiometry in the Barium Ferrates; Its Effect on Magnetization and Resistivity
The barium ferrates comprise a series of compositions exhibiting a wide range of oxygen deficiency. Members of this series are isostructural with the high-temperature polymorph of barium titanate which is hexagonal with space group C63/mmc. Polycrystalline specimens with varying oxygen contents, i.e., Fe4+ concentrati…
Solvent Effects on the Spin Resonance Spectra of Cobalt Phthalocyanine
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolvent Effects on the Spin Resonance Spectra of Cobalt PhthalocyanineJacques M. AssourCite this: J. Am. Chem. Soc. 1965, 87, 21, 4701–4706Publication Date (Print):November 1, 1965Publication History Published online1 May 2002Published inissue 1 November 1965https://pubs.acs…
Petch Relation in Single‐Phase Oxide Ceramics
Detailed examination of recent strength‐grain size data for MgO, Al 2 O 3 , and BeO ceramics showed that for large grain sizes behavior was of the form of the Knudsen equation: image . For small grain sizes, behavior fitted the form of the Petch equation, image or appeared similar but with negative slope. Three charac…
X-Ray-Emission Microanalysis of Rock-Forming Minerals I. Experimental Techniques
In order to provide a basis for calibration of X-ray-emission analyses, existing theories and experimental measurements on the generation, absorption, and fluorescence of X-rays produced by electron bombardment of mixed targets are reviewed and compared with new measurements for a variety of targets, principally commo…
Poly(ethylene terephthalate). I. Study of crystallization kinetics
Cast amorphous one mil films of poly(ethylene terephthalate)were allowed to crystallize isothermally in silicone oil over the temperature range 25–240°C. The crystallization paths were followed by recording the percent of transmission of 4000 A. light through the films as a function of time at specific temperatures. A…
Incorporation of cis- and trans-4-Fluoro-L-prolines into Proteins and Hydroxylation of the trans Isomer During Collagen Biosynthesis*
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIncorporation of cis- and trans-4-Fluoro-L-prolines into Proteins and Hydroxylation of the trans Isomer During Collagen Biosynthesis*A. Arthur Gottlieb, Yoshimasa Fujita, Sidney Udenfriend, and Bernhard WitkopCite this: Biochemistry 1965, 4, 11, 2507–2513Publication Date (Pr…
The Influence of Temperature and pH Value on the Macro-molecular Composition of Magnesium-limited and Glycerol-limited Aerobacter aerogenes Growing in a Chemostat
SUMMARY Progressive alteration of the incubation temperature of Aerobacter aerogenes cultures, growing in a chemostat at a fixed dilution rate, caused a progressive change in bacterial concentration and in bacterial RNA, carbohydrate and protein contents; the DNA content did not vary significantly. The change in bacte…
Monovacancy formation energy and debye temperature of close-packed metals
A useful and significant relationship exists between the Debye temperature θD and the monovacancy formation energy E f. It appears that E f for close-packed metals can be calculated from θD with an uncertainty of not more than 5–10%.