Structure of a chelated dinuclear peroxytitanium(IV)
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Effect of Alloy Composition on Stress Corrosion Cracking of Fe-Cr-Ni Base Alloys
This study investigated the effect of alloying on the behavior of Fe-Cr-Ni base alloys in boiling MgCl2 solutions. Alloys included commercial Fe-Cr-Ni alloys; ternary Fe-Cr-Ni alloys to 40% Cr; fourth-component alloys with specific alloy bases; fourth-, fifth-, and sixth-component alloys. The primary experimental meas…
Reflection and Transmission by Single-Domain Cholesteric Liquid Crystal Films: Theory and Verification
We have developed a fast and essentially exact numerical technique for computing propagation, reflection and transmission of light by a flat layer of any linear optical medium in which the dielectric tensor varies only in a direction normal to the surfaces. Using this technique with Oseen's spiraling-dielectric-tensor…
Binding energy of the "2p" electrons of silicon in various compounds
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBinding energy of the "2p" electrons of silicon in various compoundsRagnar Nordberg, Heinz Brecht, Royal G. Albridge, Anders Fahlman, and John R. Van WazerCite this: Inorg. Chem. 1970, 9, 11, 2469–2474Publication Date (Print):November 1, 1970Publication History Published onl…
Electrical Properties and Defect Structure of ThO 2
The electrical conductivity and thermoelectric power of highpurity polycrystalline ThO 2 in thermodynamic equilibrium with the gas phase were measured as a function of temperature from 1000° to 1600°C and as a function of oxygen partial pressure from 1 to 10 −22 atm. An n ‐type electronic contribution to the conductiv…
Inelastic Neutron Scattering from Single-Domain BaTiO3
The lattice dynamics of tetragonal BaTi${\mathrm{O}}_{3}$ have been investigated by inelastic neutron scattering from a single-domain crystal. Measurements were carried out on two projections, ($\mathrm{hk}0$) and ($h0l$); the study revealed extreme anisotropy in energy and damping of the soft optic mode, depending up…
X-Ray Photographic Studies of Liquid Crystals: II. Apparent Molecular Length and Thickness in Three Phases of Ethyl-p-ethoxybenzal-p-aminobenzoate
A general theory is developed for the relation between the molecular length and the position of a diffraction maximum found at diffraction angles of the order of 4°, for nematic and isotropic phases containing elongated molecules. Using this theory and a previously developed one for the relation between the intermolec…
Elastic Properties of Oxide Solid Solutions: The System Al 2 O 3 −Cr 2 O 3
Sound velocities, densities, and lattice parameters of hot‐pressed bodies of the solid‐solution series Al 2 O 3 −Cr 2 O 3 were investigated. Measured lattice parameters deviated slightly from Vegard's law. The compositional dependence of the longitudinal sound velocity agreed well with the predictions of Birch; the ob…
AC Flashover Tests at Project UHV on Ice-Coated Insulators
This paper presents results of experimental studies on the flashover strength of ice-coated insulators. Two types of flashover have been found on ice-covered insulators. One is caused by hard and dry ice formed in temperatures lower than 15 °F. Another is caused by mixed conditions of ice and misty rain in relatively…
The Fourier Transform of an Electron Micrograph: Effects of Defocussing and Aberrations, and Implications for the Use of Underfocus Contrast Enhancement
Abstract The effects of defocussing and spherical aberration in the electron microscope image are most simply and directly displayed in the Fourier transform of the image. We have investigated the process of image formation by determining the changes in the transform of the image of thin crystals of catalase, which ha…
Color Centers and the Thermoluminescence Mechanism in LiF
Color-center transformations in pure and dosimetry grade LiF have been studied over the wavelength range 105–750 nm. Both impurity- and irradiation-induced optical absorption were measured, the latter by a relatively high x-ray exposure at room temperature. Thermal and optical treatments were chosen to induce transfor…
Mössbauer-Effect Studies of Iron-Tin Alloys
Solid solutions $\mathrm{Fe}\mathrm{Sn}$ and the compounds ${\mathrm{Fe}}_{3}$Sn, ${\mathrm{Fe}}_{5}$${\mathrm{Sn}}_{3}$, ${\mathrm{Fe}}_{3}$${\mathrm{Sn}}_{2}$, FeSn, and Fe${\mathrm{Sn}}_{2}$ have been studied by the M\"ossabauer effect in both Fe and Sn nuclei. Also, standard x-ray diffraction and magnetization stu…
Critical Behavior of the Mott Transition in Cr-DopedV2O3
The metal-insulator (M-I) transition in Cr-doped ${\mathrm{V}}_{2}$${\mathrm{O}}_{3}$, which has been shown to be a Mott transition, was investigated by following the resistance as a function of pressure at temperatures above 298 \ifmmode^\circ\else\textdegree\fi{}K. This study has shown that the M-I phase boundary te…
Physical Properties of Poly(β-hydroxy butyrate). II. Conformational Aspects in Solution
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhysical Properties of Poly(β-hydroxy butyrate). II. Conformational Aspects in SolutionR. H. Marchessault, Keizo Okamura, and C. J. SuCite this: Macromolecules 1970, 3, 6, 735–740Publication Date (Print):November 1, 1970Publication History Published online1 May 2002Published…
The Role of Impurities in Cavitation-Threshold Determination
We have extended the theoretical work of Harvey et al. [J. Cellular Comp. Physiol. 24, 1–22 (1944)] and Strasberg [J. Acoust. Soc. Amer. 31, 163–176 (1959)] in order to consider the conditions that must exist in a liquid for a vapor cavity to be nucleated from an imperfectly wetted solid impurity (mote) in the liquid.…
Resistivity and Temperature Coefficient of Thin Metal Films with Rough Surface
The thickness dependence of resistivity and its temperature coefficient of thin metal films has been studied. A theory is proposed to include, the surface roughness in determining the film resistivity, in addition to the reduced mean free path to conduction electrons. The ratio of the roughness to the mean free path,…
Absorption corrections for neutron diffraction
Absorption corrections for cylindrical and spherical crystals have been evaluated by numerical integration for values of μR in the range 0 to 1.0, where μ is the mean linear absorption coefficient and R is the radius of the crystal. For this range of μR, which is that normally required for neutron diffraction data, in…
Crystal Structure of the Low-Temperature Antiferromagnetic Phase ofV2O3
At \ensuremath{\sim} 155 \ifmmode^\circ\else\textdegree\fi{}K, the metallic corundum structure of ${\mathrm{V}}_{2}$${\mathrm{O}}_{3}$ distorts to an insulating monoclinic one. Structural refinements of this low-temperature phase by x-ray diffraction techniques show an increase in the nearest-neighbor vanadium --- van…
Peroxo complexes of titanium
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPeroxo complexes of titaniumGerold Schwarzenbach, J. Muehlebach, and Klaus MuellerCite this: Inorg. Chem. 1970, 9, 11, 2381–2390Publication Date (Print):November 1, 1970Publication History Published online1 May 2002Published inissue 1 November 1970https://doi.org/10.1021/ic5…
Measurement of Human Serum Ceruloplasmin by Its p-Phenylenediamine Oxidase Activity
Abstract Optimum reaction conditions were evaluated for assay of serum ceruloplasmin by measurement of its p-phenylenediamine oxidase activity. The pH optima of p-phenylenediamine oxidase activities of human and rat ceruloplasmins were 5.45 and 5.2, respectively. The p-phenylenediamine oxidase activity of rat cerulopl…