Materials Literature
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This work concerns three questions: How can one decide whether a particular liquid metal will wet a given oxide substrate? What does analysis of experimental data tell one about the nature of the metal-substrate interactions? Is there correlation with strong metal-support intereactions in catalysis? Comparison of the…
Adenylate cyclase of Escherichia coli K12 has been purified 17,000-fold to near homogeneity from a 5-fold overproducing strain. One major band of Mr = 92,000 and several minor bands are seen on sodium dodecyl sulfate-polyacrylamide electrophoresis of the purest fractions. Identification of the enzyme with the 92,000-D…
Abstract Fibers of poly( L ‐lactide) (PLLA) with a tensile strength up to 1.2 GPa and Young's modulus in the range of 12–15 GPA were obtained by a hot drawing of fibers spun from solution of PLLA in good solvents such as dichloromethane and trichloromethane. The tensile strength of fibers was strongly dependent on the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffects of annealing and prior history on enthalpy relaxation in glassy polymers. 3. Experimental and modeling studies of polystyreneIan M. Hodge and G. S. HuvardCite this: Macromolecules 1983, 16, 3, 371–375Publication Date (Print):March 1, 1983Publication History Published…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCofacial assembly of partially oxidized metallamacrocycles as an approach to controlling lattice architecture in low-dimensional molecular solids. Chemical and architectural properties of the "face-to-face" polymers [M(phthalocyaninato)O]n, where M = Si, Ge, and SnCarl W. Di…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTToward tricyclo[2.2.2.2]decane. 1. [n.2.2.2]Paddlane systems, n = 10-14Philip E. Eaton and Bernard D. LeipzigCite this: J. Am. Chem. Soc. 1983, 105, 6, 1656–1658Publication Date (Print):March 1, 1983Publication History Published online1 May 2002Published inissue 1 March 1983…
Mixtures of α‐A1 2 O 3 and NaAlO 2 corresponding to the eutectic composition 65 mot % A1 2 O 3 were heated in sealed platinum crucibles above the eutectic temperature (measured to be 1572°C in this study). Once melting was complete, the liquid was quenched and the resultant solid examined by X‐ray diffraction. Sodium…
An accurate intermolecular potential of the HFD-C form is proposed which appears to be the best representation of the Ar–Kr interaction. The potential, which possesses the correct long range behavior, predicts a wide variety of macroscopic and microscopic data. It is consistent with accurate second virial, viscosity,…
Abstract Nylon resins and CPE rubber can be melt-blended to give compositions which have useful properties. If the rubber is cured by dynamic vulcanization, high strength oil resistant thermoplastic elastomers result. Cold milling of melt-mixed compositions results in nylon-reinforced rubber which can be mixed with cu…
"Nuclear Chemical Engineering (2nd ed.)." Nuclear Technology, 60(3), pp. 439–440
Abstract Several metallophthalocyanines (MPc: M=Ni(II), Co(II), Zn(II), Pb(II), Fe(II), Sn(II), Cd(II), Mg(II), and Mn(III)) were obtained by heating phthalonitrile with metal salts in alcohols in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene. Metal acetylacetonates as well as metal halides were available as meta…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and molecular structure of a nitrido(porphyrinato)chromium(V) complexJohn T. Groves, Tadashi Takahashi, and William M. ButlerCite this: Inorg. Chem. 1983, 22, 6, 884–887Publication Date (Print):March 1, 1983Publication History Published online1 May 2002Published in…
Potentiodynamic cyclic polarization of four orthodontic alloys (wires), namely Permachrome, Elgiloy, a beta-titanium alloy and Nitinol in a 1% NaCl solution within -500 mV and +300 mV (SCE) indicated the first three alloys to be passive whereas breakdown of passivity was observed on Nitinol. The SEM examination of the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUnique high-spin-low-spin transition of the central ion in a linear, trinuclear iron(II) triazole compoundGer Vos, Rob A. Le Febre, Rudolf A. G. De Graaff, Jaap G. Haasnoot, and Jan ReedijkCite this: J. Am. Chem. Soc. 1983, 105, 6, 1682–1683Publication Date (Print):March 1,…
Four basic lead carbonates were prepared and identified by X-ray powder diffractometry. These were hydrocerussite (Pb 3 (OH) 2 (CO 3 ) 2 ), plumbonacrite (Pb 10 O(OH) 6 (CO 3 ) 6 ), and the two adducts MOH•2PbCO 3 (M = Na, K). New diffraction data are presented for the latter two compounds; they both have primitive he…
ADVERTISEMENT RETURN TO ISSUEPREVArticleTrivacant heteropolytungstate derivatives. 2. Synthesis, characterization, and tungsten-183 NMR of P4W30M4(H2O)2O11216- (M = Co, Cu, Zn)Richard G. Finke and Michael W. DroegeCite this: Inorg. Chem. 1983, 22, 6, 1006–1008Publication Date (Print):March 1, 1983Publication History P…
The pharmacokinetics of iohexol, a new nonionic, water-soluble contrast medium, have been determined after intravenous injection in 20 healthy volunteers, at four different dose levels (125-500 mg I/kg). The apparent volume of distribution was 0.27 1/kg, indicating distribution in the extracellular water. The biologic…
The infrared and Raman spectra of disordered paraelectric and ordered ferroelectric phases of CsH2PO4 and CsD2PO4 single crystals have been investigated at various temperatures in the 4000–10 and 4000–0 cm−1 range, respectively. An assignment of lattice and internal vibrations in terms of symmetry species and approxim…
The thermal expansion behavior of lithium, sodium, potassium, and rubidium borate glasses was measured. The results indicate that the “borate anomaly” in the thermal expansion coefficient occurs at ∼20 mol% alkali oxide. A maximum in the glass transformation and dilatometric softening temperatures also occurs at ∼27 m…
Using mean field free energy functionals of the type employed by Sullivan, we have investigated the nature of the transition from partial to complete wetting that occurs at a solid-gas interface. We show that this wetting transition can be a first or a second order phase transition. If it is first order, as predicted…