Materials Literature
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Test and analytic results from recent EPRI-sponsored programs are organized to explain insights into generator modeling. It is shown how small-signal tests and analysis are related to the nonlinear incremental properties of rotor iron. Changes in rotor circuit topology caused by rotation are identified. The large-sign…
Abstract Quantity‐intensity ( Q/I ) relationships for potassium (K + ) and ammonium (NH 4 + ) in a Maury silt loam soil (fine‐silty, mixed, mesic, Typic Paleudalfs) under long‐term conventional and no‐tillage management were investigated to determine changes in solute‐soil interactions brought about by differential or…
Etching mechanisms of Cu thin films under the exposure of an argon ion beam and halogen molecules (Cl2, Br2) were examined in a UHV system using a quartz crystal oscillator and x-ray photoelectron spectrometer. Chlorine exposure at room temperature produced a very stable chlorine overlayer on the Cu surface. The passi…
SUMMARY: Extracellular polysaccharide (EP) and lipopolysaccharide (LPS) were isolated from three strains of Pseudomonas fluorescens (a wild-type and two mutants) and the adsorption isotherms (relationship between amount of polymer adsorbed and bulk liquid concentration of polymer in solution) of these polymers to hydr…
Expressions are derived for calculating the induced dipole moment of an arbitrary molecule A interacting with an arbitrary system B through first- and second-order Coulomb interaction. The theory is formulated in terms of linear and quadratic charge-density susceptibilities and takes account of charge penetration but…
SUMMARY The origins of physical and chemical metastability in aqueous systems are discussed with particular reference to supersaturated solutions, i.e. those where eutectic phase separation does not normally occur. Such solutions are characterized by high viscosities, and under conditions of rapid cooling to the glass…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTQuantitative intermolecular reaction of hydrolyzed trialkoxysilanes at submonolayer, monolayer, and multilayer surface coveragesJames D. Miller and Hatsuo IshidaCite this: Langmuir 1986, 2, 2, 127–131Publication Date (Print):March 1, 1986Publication History Published online1…
Fructose-1,6-bisphosphatase from the yeast Saccharomyces cerevisiae has properties similar to other gluconeogenic fructose-1,6-bisphosphatases, but an unusual characteristic of the yeast enzyme is that it can be phosphorylated in vitro by cAMP-dependent protein kinase. Phosphorylation also occurs in vivo, presumably a…
A simple model is presented to account for the effect of martensitic nucleation in ZrO 2 particles on theoretical predictions of toughness enhancement during transformation toughening. The model allows for shear and volumetric strain contributions during nucleation, whereas only volumetric strain contributes to toughn…
Diatom species formerly referred to the genus Symbolophora Ehrenb. are herein assigned partly to Symbolophora sensu Hasle & Sims and partly to Stellarima nom. nov. The generitype for Symbolophora is established as S. trinitatis Ehrenb. and that for Stellarima as S. microtrias (Ehrenb.) comb. nov. Symbolophora has been…
Microscopic multichain models of amorphous and crystalline regions of an oriented polymer fiber have been examined using molecular dynamics computer simulation. A lamina model was used in which the chains were suspended between two fixed parallel planes representing the faces of adjacent crystallites. The ordered stru…
It has been recently shown that the system potassium laurate-- decanol--water presents three nematic phases, two uniaxial and one biaxial. We are currently investigating the structure of these phases by scattering methods. The study reported here describes the first experiment, neutron scattering with contrast variati…
Abstract The conditions for the formation of the β‐form of isotactic polypropylene in the presence of a β‐nucleator and the β‐α transition during heating were studied by wide angle X‐ray diffraction. A conditional crystallinity of the β‐form, X′ β , and a structural disorder parameter, S , deduced from WAXD data were…
Analytical expressions for the static structure function for a polydisperse Percus-Yevick fluid with Schulz (gamma) distributed particle diameters have been obtained. Results obtained with the expression for selected width factors and particle densities are presented.
This report describes the release of methotrexate and cis-platinum analogues JM8 and JM9 from phase transition liposomes. Large unilamellar liposomes were able to quickly release the antineoplastic agents employed during in vitro tests. Methotrexate exhibited a 73 per cent release in one second. The cis-platinum analo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEXAFS evidence for direct rhodium-iron bonding in silica-supported rhodium-iron bimetallic catalystsMasaru Ichikawa, Takakazu Fukushima, Toshihiko Yokoyama, Nobuhiro Kosugi, and Haruo KurodaCite this: J. Phys. Chem. 1986, 90, 7, 1222–1224Publication Date (Print):March 1, 198…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTModified taxols. 2. Oxidation products of taxolNeal F. Magri and David G. I. KingstonCite this: J. Org. Chem. 1986, 51, 6, 797–802Publication Date (Print):March 1, 1986Publication History Published online1 May 2002Published inissue 1 March 1986https://pubs.acs.org/doi/10.102…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface-modified electrodes: oxidative electropolymerization and deposition of Ni[Me4(RBzo)2[14]tetraeneN4] complexesCynthia L. Bailey, Robert D. Bereman, D. Paul Rillema, and Robert NowakCite this: Inorg. Chem. 1986, 25, 7, 933–938Publication Date (Print):March 1, 1986Publi…
Abstract Thermodynamics of K‐Ca exchange were compared using equilibrium and kinetic approaches in two Delaware soils. The classical Argersinger theory was employed for the equilibrium approach, while a kinetic approach was studied using miscible displacement, batch, and vigorously mixed batch techniques. These three…
SUMMARY Some key ideas and experimental findings concerning the probability that crystallization of a liquid or its binary solutions will occur at moderate cooling rates are discussed. The use of cryoprotectants and of pressure to favourably influence these probabilities is rationalized, and some of the newer findings…