Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProduction of KH2PO4 from KCI and H3PO4 in an Organic Liquid MediumEliezer Rubin, Edward Szpruch, and Aluf OrellCite this: Ind. Eng. Chem. Process Des. Dev. 1978, 17, 4, 460–468Publication Date (Print):October 1, 1978Publication History Published online1 May 2002Published in…
The low-temperature magnetic structure of the hexagonal modification of FeGe has been determined by neutron diffraction methods. Below a transition temperature of 30.5+or-0.5K, the iron moments cant away from the (001) direction to form a double-coned structure in which alternate antiferromagnetically aligned (001) sh…
Epitaxy is the phenomenon in which the orientation of a crystal 0 which grows on a crystalline substrate S, usually different from 0, is related to that of S, even though their normal lattices do not match at their common interface. Apart from its fundamental interest, epitaxy is important in view of its application i…
Abstract The course of the chlorination reaction of cis ‐1,4‐polybutadiene is dependent on the choice of solvent. When methylene chloride is used, a pure addition reaction of chlorine leads to a polymer with the structure of head‐to‐head, tail‐to‐tail PVC. The thermal stability of the head‐to‐head PVC polymer has been…
An electro-optic display mechanism is described which uses a smectic A liquid crystal of positive dielectric anisotropy. Information can be written on the display, stored there without a sustaining voltage i.e. has a memory, and subsequently can be erased electrically. The erase mechanism involves a dielectric re-orie…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTApplication of the UNIQUAC Equation to Calculation of Multicomponent Phase Equilibria. 2. Liquid-Liquid EquilibriaT. F. Anderson and J. M. PrausnitzCite this: Ind. Eng. Chem. Process Des. Dev. 1978, 17, 4, 561–567Publication Date (Print):October 1, 1978Publication History Pu…
Abstract Reflection, emission, and excitation spectra of CaS:Pb 2+ and CaSe:Pb 2+ are measured at 300, 80, and 6K. At higher concentrations of Pb 2+ ions, the emission and exeitation bands due to the Pb 2+ dimer are observed besides those of the Pb 2+ monomer. Theoretical calculation of energy levels of the dimer of T…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Yu Chan, James L. White, Yasushi Oyanagi; A Fundamental Study of the Rheological Properties of Gl…
In Sossi's formulation of the Fourier transform method of optical multilayer design the refractive-index profile is derived for an inhomogeneous layer of infinite extent having the desired spectral transmittance. This layer is then approximated by a finite system of discrete homogeneous layers. Because it does not mak…
Small-angle scattering studies on biological structures provide low-resolution models. More detailed models need a more elaborate analysis in order to show their uniqueness. The representation of small-angle scattering of both in Cartesian coordinates and polar coordinates is discussed. The degree of non-uniqueness of…
The A isozyme of yeast hexokinase (ATP:D-hexose 6-phosphotransferase, EC 2.7.1.1) crystallized as a complex with glucose has a conformation that is dramatically different from the conformation of the B isozyme crystallized in the absence of glucose. Comparison of the high-resolution structures shows that one lobe of t…
In a previous paper [Levitt, M., and Greer, J. (1977), J. Mol. Biol. 114, 181--239], an objective compilation of the secondary-structure regions in more than 50 different globular proteins was produced automatically. In the present paper, these assignments of secondary structure are analyzed to give the frequency of o…
A review is given of the present state of the theory of dynamic nuclear polarization (DNP) by the dipole electron-nucleus interaction in solids. The two-particle (solid effect), three-particle (electron-nucleus cross relaxation), and many-particle (dynamic cooling) mechanisms of DNP are discussed both for idealized co…
The EPR and optical absorption spectra of X-ray irradiated single crystal of Na beta -alumina have been examined. The most prominent absorptions are tentatively ascribed to an F + centre at the O(5) oxygen ion site in the conduction plane. To this defect the authors assign an axially symmetric EPR spectrum which shows…
Studies were carried out all the effects oj chemical com/Jositioll, mallu-Jacturing condition and heat-treatment oj lo w-carboll rimmed hot-rolled steel sheets on its susceptibility to stress corrosion cracking in 60C reagent methanol containing O.Olwt % Jormic acid and O.l wt O o water by using a constant strain-rate…
The nonlinear formalism developed by Zwanzig and Mori is utilized to derive a kinetic equation for the distribution of monomer phase space coordinates and a coarse-grained momentum density. Several simplifying approximations are then introduced into the exact kinetic equation. The resulting approximate description is…
An edge effect observed in high-resolution scanning Auger-electron microscopy is modeled by Monte Carlo methods based on the direct simulation of individual inelastic scattering processes. The Monte Carlo method permits the simulation of the spatial distribution of excited electrons generated by inelastic scattering.…
The response of an fcc crystal to unconstrained [110] uniaxial loading has been studied theoretically. Numerical calculations were made of load, stress (${\ensuremath{\sigma}}_{110}$), lattice parameters, and elastic moduli (${C}_{\mathrm{rs}}$) along the primary loading path, and the domain of $M$ stability (as defin…
Compared are recent EPR, susceptibility, and neutron measurements of both $S$-state (${b}_{4}^{0}$) and non-$S$-state (${A}_{4}^{0}〈{r}^{4}〉$) lanthanide-ion crystal-field splittings in metals. The ratio of the $S$-state to the non-$S$-state fields $\mathcal{R}=\frac{{b}_{4}^{0}}{{A}_{4}^{0}〈{r}^{4}〉}$ in some metals…
The infrared spectrum of the semimetal Ti${\mathrm{Se}}_{2}$ has been recorded over a broad range of energies, above and below its distortion temperature ${T}_{d}=202\ifmmode^\circ\else\textdegree\fi{}$K, a distortion for which electron-hole coupling is the likely source. Interpretation of the spectrum is immediately…