The hydrated electron
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Kinetics and Mechanism of Bacterial Disinfection by Chlorine Dioxide1
Survival data are presented for a fecal strain of Escherichia coli exposed to three concentrations of chlorine dioxide at four temperatures. Chick's first-order reaction equation is generalized to a pseudo nth-order model. Nonlinear least squares curve-fitting of the survival data to the nth order model was performed…
Phase separation during the formation of three‐dimensional polymers
Abstract Phase separation during the formation of three‐dimensional polymers in the presence of inert diluents, by crosslinking of linear polymers, or by polymerization of multifunctional monomers, was treated under the assumption of thermodynamic equilibrium by using the Flory theory of swelling equilibria and rubber…
The Fluorescent Response of NaI(Tl), CsI(Tl), CsI(Na) and CaF2(Eu) to X-Rays and Low Energy Gamma Rays
The fluorescent response functions of NaI(Tl), CsI(Tl), CsI(Na) and CaF2(Eu) have been determined with thin crystals over the energy range from 3.3 keV to 840 keV. A pronounced nonlinear dependence on photon energy has been observed in this region for all four types of crystals investigated. Qualitatively the response…
Zur Konjugation in makrocyclischen Bindungssystemen, VII. Synthese und Eigenschaften von Hexa‐m‐phenylen und Octa‐m‐phenylen
Abstract Aus der Reihe der bisher unbekannten Poly‐ m ‐phenylene wurden Hexa‐ und Octa‐ m ‐phenylen aus entsprechenden Arylen‐dihalogeniden (z. B . 3.3′‐Dibrom‐biphenyl) durch Grignardierung und Umsetzung mit Kupfer(II)‐chlorid oder Kobalt(II)‐chlorid dargestellt. NMR‐, UV‐, IR‐Spektren und andere Eigenschaften dieser…
The structural mechanics of fibers
Abstract The “traditional” assumed structures of fibers, such as the fringed micelle and fringed fibril forms, regard the fiber as made up of a mixture of crystalline and noncrystalline regions. This view has been subject to considerable criticism in recent years, but it does, nevertheless, remain the most effective b…
Effect of substituents on the anisotropic electron spin resonance parameters in copper acetylacetones
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of substituents on the anisotropic electron spin resonance parameters in copper acetylacetonesHenry A. Kuska, Max Tofield Rogers, and R. E. DrullingerCite this: J. Phys. Chem. 1967, 71, 1, 109–114Publication Date (Print):January 1, 1967Publication History Published on…
Infrared Studies of Protective Films Formed by Acetylenic Corrosion Inhibitors
Infrared spectra of surface films formed on iron and steel mirrors by propargyl alcohol, acetylene, and ethynyl‐cyclohexanol acid corrosion inhibitors were recorded using a multiple reflectance technique. These spectra showed that the acetylenic molecules reacted at the metal surfaces in solutions to produce protectiv…
Yielding of glassy polymers: Volume effects
Abstract A yield criterion is constructed for glassy polymers from results of constant strain‐rate tests in different stress fields. A significant effect of hydrostatic pressure (or volume change) on the yield stress of polystyrene was found. Direct dilatometric measurements were made on polystyrene, poly(methyl metha…
Integrated Intensities of Absorption Bands in Infrared Spectroscopy
(1967). Integrated Intensities of Absorption Bands in Infrared Spectroscopy. Applied Spectroscopy Reviews: Vol. 1, No. 1, pp. 29-98.
Crystal structure of syndiotactic polypropylene
Abstract Double oriented fiber spectra of syndiotactic polypropylene were obtained. It was possible to redetermine with greater accuracy the unit cell constants, which are: a = 14.50, b = 5.60, c = 7.40 A. Space group: C222 1 . It was proved that the chain has s (2/1)2 symmetry, corresponding to a succession of intern…
The theory of paramagnetic relaxation
The spin-lattice relaxation of paramagnetic ions in ionic crystals takes place via thermal modulations of the complex consisting of the ion and its immediate neighbours. The standard theory is that due to Van Vleck, who used a crystal-field model to describe the complex. In recent years there have been extensive devel…
Study of the Structure of Vanadium in Soda—Boric Oxide Glasses
The EPR and optical spectra of vanadium in the Na2O–B2O3 glass system have been analyzed. It is found that the data can best be interpreted in terms of a vanadyl-type structure in a ligand field of fourfold symmetry. Good correlation of the optical and EPR data is achieved through molecular orbital calculations, which…
The Classification of Non-Euclidean Plane Crystallographic Groups
This paper deals with the algebraic classification of non-euclidean plane crystallographic groups (NEC groups, for short) with compact quotient space. The groups considered are the discrete groups of motions of the Lobatschewsky or hyperbolic plane, including those which contain orientation-reversing reflections and g…
Mixed Conduction in Zr[sub 0.85] Ca[sub 0.15] O[sub 1.85] and Th[sub 0.85]Y[sub 0.15]O[sub 1.925] Solid Electrolytes
The d‐c polarization technique according to Wagner was applied for the first time at elevated temperatures for the determination of σ ⊖ and σ ⊕ in the Zr 0.85 Ca 0.15 O 1.85 and Th 0.85 Y 0.15 O 1.925 electrolytes over a range of oxygen activity and temperature. The applicability of the technique and an improved metho…
The Structure and Properties of Materials
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Molecular hyperpolarisabilities
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Measurement of Diffusion Lengths in Direct-Gap Semiconductors by Electron-Beam Excitation
In semiconductors having high efficiency for radiative recombination, the voltage dependence of cathodoluminescence may be used to determine the diffusion length and to estimate the surface recombination velocity of excess carriers. Theoretical calculations are based on a knowledge of the Laplace transform of the dist…
Elastic moduli of the crystal lattices of polymers
Abstract Elastic moduli of the crystalline regions in high polymers have been studied. Oriented specimens were used throughout. Lattice strains were measured by an x‐ray technique in the direction of the fiber axis as well as in that perpendicular to the fiber axis. The moduli for both directions were calculated on th…
Reactions of Glasses with Aqueous Solutions
The kinetics of the reactions of various glasses with water and aqueous solutions with pH from 1 to 13 was studied. Simple binary alkali oxide‐silica glasses were examined as well as some ternary glasses derived from the binary compositions by substituting alkaline‐earth oxides for silica. All components of the glass…