Materials Literature
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Spectrally resolved thermostimulated-luminescence (TSL) measurements have been carried out on samples of synthetic quartz, submitted to different treatments in order to change the type of charge compensation at the substitutional aluminum sites. Near-infrared (NIR) optical absorption, electron paramagnetic resonance (…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnalyzing Lanthanide-Induced Shifts in the NMR Spectra of Lanthanide(III) Complexes Derived from 1,4,7,10-Tetrakis(N,N-diethylacetamido)-1,4,7,10-tetraazacyclododecaneJohn H. Forsberg, Robert M. Delaney, Qian Zhao, George Harakas, and Rubin ChandranCite this: Inorg. Chem. 19…
Medium voltage (2300V to 4160V) motor stator insulation has been designed to withstand voltage surges from circuit breaker operation for many decades. It is probable that the surges created by ASDs will not pose a threat to properly designed and manufactured insulation. However, as ASDs become more popular in the high…
Abstract LiBC ist eine neue, nur aus den leichten Elementen der Hauptgruppen bestehende Verbindung. Sie entsteht aus den Elementen in verschweißten Niobampullen bei 770 K und anschließendem kurzzeitigen Tempern bei 1 770 K in Form goldglänzender, hexagonaler Plättchen. Entsprechend Li + (BN) − bilden Bor und Kohlensto…
Although selection of corrosion control optimization strategies is more art than science, utility experiences can provide a basis for rational decision‐making. Utility experience under the Lead and Copper Rule was examined to provide improved insight into corrosion control. Average 90th percentile lead concentrations…
Abstract High‐resolution core and valence band photoemission as well as photoinduced Auger spectra of metallic Sn, polycrystalline SnO and SnO 2 ((110) natural single‐crystal cassiterite and polycrystalline) samples were measured in order to give information on local electronic and geometric structures around the core…
The perovskites L${\mathrm{VO}}_{3}$ (L=La, Lu, or Y) are canted-spin antiferromagnets. Magnetic susceptibility measurements made on cooling from room temperature in a field of 1 kOe or on heating after cooling in 1 kOe give rise to a sample magnetization M that is oriented in opposition to the magnetizing field below…
Physical phenomena underlying failure due to electromigration and stress-induced voiding in fine Al and Al-alloy thin-film conducting lines are examined in the context of accelerated testing methods and structures. Aspects examined include effects due to line isolation (the absence of reservoirs at conductor ends), so…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChromic Phenomena in Regioregular and Nonregioregular Polythiophene DerivativesKarim Faied, Martin Frechette, Maxime Ranger, Louise Mazerolle, Isabelle Levesque, Mario Leclerc, Tian-An Chen, and Reuben D. RiekeCite this: Chem. Mater. 1995, 7, 7, 1390–1396Publication Date (Pr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGadolinium complex of tris[(3-hydroxy-1-methyl- 2-oxo-1,2-didehydropyridine-4-carboxamido)ethyl]-amine: A New Class of gadolinium magnetic resonance relaxation agentsJide Xu, Sonya J. Franklin, Donald W. Whisenhunt Jr., and Kenneth N. RaymondCite this: J. Am. Chem. Soc. 1995…
Transmission electron microscopy studies have been performed on a series of Pb(${\mathrm{Zr}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Ti}}_{\mathit{x}}$)${\mathrm{O}}_{3}$ compositions for 0\ensuremath{\le}x\ensuremath{\le}0.2. These studies revealed several important features of the phase transformational sequ…
The magneto-impedance (MI) effect is a phenomenon in which the voltage induced by a high frequency current source in a ferromagnetic wire changes with the application of an external field. A giant MI effect was found in amorphous magnetic wires having a composition of (Fe/sub 0.06/Co/sub 0.94/)/sub 72.5/Si/sub 12.5/B/…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolubilization of Aromatic Solutes in Block CopolymersFrederic Gadelle, William J. Koros, and Robert S. SchechterCite this: Macromolecules 1995, 28, 14, 4883–4892Publication Date (Print):July 1, 1995Publication History Published online1 May 2002Published inissue 1 July 1995h…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAsymmetric Synthesis of MK-0499David M. Tschaen, Lee Abramson, Dongwei Cai, Richard Desmond, Ulf-H. Dolling, Lisa Frey, Sandor Karady, Yao-Jun Shi, and Thomas R. VerhoevenCite this: J. Org. Chem. 1995, 60, 14, 4324–4330Publication Date (Print):July 1, 1995Publication History…
The steadily increasing number of high-resolution human immunodeficiency virus (HIV) 1 protease complexes has been the impetus for the elaboration of knowledge-based mean field ligand-protein interaction potentials. These potentials have been linked with the hydrophobicity and conformational entropy scales developed o…
The basic ideas and approximations underlying the derivation of the mode coupling theory of structural relaxation in simple liquids are summarized. We explain why in disordered many particle systems the infinite set of density fluctuation products constitutes slow modes whose interactions lead to bifurcation singulari…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPorphyrins: Powerful Chromophores for Structural Studies by Exciton-Coupled Circular DichroismStefan Matile, Nina Berova, Koji Nakanishi, Snejana Novkova, Irena Philipova, and Blagoy BlagoevCite this: J. Am. Chem. Soc. 1995, 117, 26, 7021–7022Publication Date (Print):July 1,…
We report detailed x-ray powder-diffraction measurements on a sample consisting of \ensuremath{\sim}60% carbon nanotubes and \ensuremath{\sim}40% carbon nanoparticles. These measurements demonstrate the existence of short-range interlayer stacking correlations. Our calculations show that such correlations should not b…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectroactive and Photoactive Rod-Coil Copolymers: Design, Synthesis, and Supramolecular Regulation of Photophysical PropertiesJohn A. Osaheni and Samson A. JenekheCite this: J. Am. Chem. Soc. 1995, 117, 28, 7389–7398Publication Date (Print):July 1, 1995Publication History P…
Abstract Novel supramolecular liquid‐crystalline materials have been obtained by the hydrogen bond formation between different and independent molecules. The self‐assembly of carboxylic acid and pyridine moieties that function as H‐bond donors and acceptors, respectively, results in the formation of mesogenic complex…