Materials Literature
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Silver imidazolate has been synthesized and its solid-state structure determined, ab initio, from conventional X-ray powder diffraction data only. The crystals are orthorhombic, space group P212121, with a= 5.5759(4), b= 6.7452(4), c= 22.174(1)Å, U= 834.0(1)Å3, Z= 8, Dc= 2.786 g cm–3. The structure was solved by a rea…
In this paper we describe an experimental study on ferroelectric non-volatile memory. The test devices using a MFMIS (metal-ferroelectric-metal-insulator-semiconductor) structure were developed for 1-Tr-type NDRO (non-destructive readout) memory. PZT (Lead-zirconate-titanate) and PT (lead-titanate) thin films were dep…
"Aging and Life Extension of Major Light Water Reactor Components." Nuclear Technology, 109(1), pp. 163–164
In this paper, the authors report the results of laboratory experiments on NO/sub x/ removal (DeNOx) using a nonthermal plasma process. Studies were conducted on a dry-type plasma reactor and several wet-type reactors to evaluate DeNOx efficiency. The reactor geometry was coaxial with an inner discharge electrode and…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNO Reduction by Activated Carbons. 3. Influence of Catalyst Loading on the Catalytic Effect of PotassiumM. Jose Illan-Gomez, Angel Linares-Solano, Ljubisa R. Radovic, and Concepcion Salinas-Martinez de LeceaCite this: Energy Fuels 1995, 9, 1, 104–111Publication Date (Print):…
The local environment of metal ions in a series of spin-sprayed Ni/sub 0.15/Zn/sub y/Fe/sub 2.85-y/O/sub 4/ (y=0.16, 0.23, 0.40, 0.60) films have been studied using extended X-ray absorption fine structure (EXAFS). Fourier transforms of the EXAFS data show peaks which are identified with specific local atom correlatio…
Microcapsules of poly(3-hydroxybutyric acid) [PHB] and its copolymers with hydroxyvalerate [HV] were prepared by the solvent evaporation technique and loaded with a model drug, 2,7-dichlorofluorescein. Microcapsules were also prepared from the same polymers by incorporating a polyphosphate-Ca+2 complex into the membra…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn Unusual Near-Eclipsed Porphyrin Ring Orientation in Two Crystalline Forms of (.mu.-Oxo)bis[(octaethylporphinato)iron(III)]. Structural and Molecular Mechanics StudiesBeisong Cheng, J. David Hobbs, Peter G. Debrunner, Jonah Erlebacher, John A. Shelnutt, and W. Robert Schei…
The fluorescence and chirality of photoswitchable inherently dissymmetric alkenes cis1 and trans-2-nitro-7-dimethylamino-9-(2′,3′-dihydro-1′H-naphtho[2,1-b]thiopyran-1′-ylidene)-9H-thioxanthene 2 are reversibly modulated by irradiation whereas photoresponsive effects and emission are regulated by reversible protonatio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInclusional Complexation by Cyclodextrins at the Surface of Silver As Evidenced by Surface-Enhanced Resonance Raman SpectroscopyYasushi Maeda and Hiromi KitanoCite this: J. Phys. Chem. 1995, 99, 2, 487–488Publication Date (Print):January 1, 1995Publication History Published…
Bifunctional aluminosilicate catalysts containing framework Ti are prepared, with two different topologies and pore sizes; these samples contain both acid and oxidizing catalytic sites and are highly selective for carrying out multistep reactions with selectivities close to those obtained with epoxidases, this is show…
Dendritic growth is the common mode of solidification encountered when metals and alloys freeze under low thermal gradients. The growth of dendrites in pure melts is generally acknowledged to be controlled by the transport of latent heat from the moving crystal-melt interface into its supercooled melt. The Ivantsov fo…
Skeletal isomerization of n-butane to isobutane has been studied with a flow reactor, mainly at 573 K, over caesium hydrogen salts of 12-tungstophosphoric acid (trihydrogen phosphododecatungstate), CsxH3–xPW12O40. The activity was highly dependent on the caesium content, being a maximum for x= 2.5 where the number of…
Covalently linked polyoxometalate clusters are produced in the reaction of organic diisocyanates with [Bu4N]2[Mo6O19], suggesting the development of extended interconnected networks incorporating polyoxometalate ions.
An electrochemical impedance study was made for a platinum working electrode in ‐10 mole percent melts in a temperature range of 1150 to 1200 K. The principal electroactive oxidant is a solute of , which has a lower Warburg coefficient than that for the major oxidant , in pure melts in contact with 0.1 and environment…
Using vacuolar membranes from Neurospora crassa, we observed that sulfite prevented the loss of vacuolar ATPase activity that otherwise occurred during 36 h at room temperature. Sulfite neither activated nor changed the kinetic behavior of the enzyme. Further, in the presence of sulfite, the vacuolar ATPase was not in…
We found that ibuprofen (IPF) became amorphous when the crystalline powder was merely mixed with polyvinylpyrrolidone (PVP), using a test tube mixer, and allowed to stand at appropriate temperatures. The crystallinity of the mixture was evaluated from the X-ray diffraction spectra by Ruland's method. The degree of dec…
Abstract The polymerization of ε‐caprolactone (εCL) initiated with aluminium triisopropoxide (Al(O i Pr) 3 ) trimer ( A 3 ) and/or tetramer ( A 4 ) was studied. The rate of A 3 ⇔︁ A 4 interconversions in the diluted (≤0,1 mol · L ‐1 ) C 6 D 6 , C 6 D 6 /εCL, and THF/εCL solutions were found to be slow, when compared w…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Generic Approach to Functionalizing Aromatic Polyimides for Second-Order Nonlinear OpticsDong Yu, Ali Gharavi, and Luping YuCite this: Macromolecules 1995, 28, 3, 784–786Publication Date (Print):January 1, 1995Publication History Published online1 May 2002Published inissue…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Definitive Investigation of the Gas-Phase Two-Center Three-Electron Bond in [H2S-SH2]+, [Me2S-SMe2]+, and [Et2S-SEt2]+: Theory and ExperimentYing Deng, Andreas J. Illies, Mary A. James, Michael L. McKee, and Michael PeschkeCite this: J. Am. Chem. Soc. 1995, 117, 1, 420–428…