Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUnimolecular reactions of nitrogen oxides (NO, N2O, NO2) and ammonia on rhodium and platinumG. A. Papapolymerou and Lanny D. SchmidtCite this: Langmuir 1985, 1, 4, 488–495Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1 J…
Recent research into the formation, growth, and wear-off of pills is summarized. A sequential staining process is described allowing the identification of the pull-out/ roll-up mechanism of pill growth. A number of common pilling situations are considered with reference to five pilling rate differentials; if pill form…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular aspects of rubberlike elasticityJames E. MarkCite this: Acc. Chem. Res. 1985, 18, 7, 202–206Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1 July 1985https://pubs.acs.org/doi/10.1021/ar00115a002https://doi.org/1…
An electrochemical study of hydroxide- and methoxide-ligated iron(III) tetraphenylporphyrins possessing ortho-phenyl substituents that block mu-oxo dimer formation has been carried out. Ligation by these strongly basic oxyanions promotes the formation of iron(IV)-oxo porphyrins upon one-electron oxidation. Further one…
Abstract Eleven olefins were oxidized with tris(2,4-pentanedionato)manganese(III) at the reflux temperature to give the corresponding 3-acetyl-2-methyl-4,5-dihydrofurans in good yields. The oxidation of 9-benzylidene-9,10-dihydroanthracene under the same reaction conditions did not produce the corresponding dihydrofur…
Abstract A new method of producing microcellular polyester composites is developed. The microcellular foam which is produced by supersaturating the polyester resin with nitrogen is cured by dielectric heating. The lightweight composite contains about 10 μm size bubbles. By substituting the microcells for the particula…
Pressure tubes were initially made of Zircaloy-2 but for Pickering Unit 3 and all subsequent power reactors, pressure tubes have been made from Zr-2,5 wt %Nb, The current tubes have a design life of 30 yr and are made by the same extrusion and cold drawing process used to make the Zircaloy-2 tubes, Recent developments…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnalysis of trigonal-prismatic and octahedral preferences in hexaamine cage complexesPeter Comba, Alan M. Sargeson, Lutz M. Engelhardt, Jack MacB. Harrowfield, Allan H. White, Ernst Horn, and Michael R. SnowCite this: Inorg. Chem. 1985, 24, 15, 2325–2327Publication Date (Pri…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT.pi.-Cation-radical formation following visible light photolysis of porphyrins in frozen solution using alkyl chlorides or quinones as electron acceptorsZbigniew Gasyna, William R. Browett, and Martin J. StillmanCite this: Inorg. Chem. 1985, 24, 15, 2440–2447Publication Date…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparison of the molecular and electronic structures of (2,3,7,8,12,13,17,18-octaethylporphyrinato)iron(II) and (trans-7,8-dihydro-2,3,7,8,12,13,17,18-octaethylporphyrinato)iron(II)Steven H. Strauss, Michael E. Silver, Kim M. Long, Ronald G. Thompson, Robert A. Hudgens, K.…
This paper reviews some current developments in fabrics which are both water proof and water vapour-permeable. Outer garments manufactured from these materials can improve wearer comfort by reducing the buildup of perspiration in side the clothing. Tightly-woven fabrics and microporous polymer membranes transmit water…
ABSTRACT The pendant drop method, the current method of choice for interfacial tension measurement, was used to obtain the interfacial tensions of a number of vegetable oils with water. Contrary to the reports of earlier workers, all triglycerides examined had similar interfacial tensions with water, all values being…
Controlled microwave heating and melting of silica, alumina, and aluminosilicate gels were achieved in a 600‐W domestic‐type oven. The microwave absorption mechanism of these gels is not yet clear. However, parameters were defined whereby rapid heating (including melting) is achieved for these gels. Empirical results…
Using either normal formic acid in H 2 18 O or 18 O‐labeled formic acid in H 2 16 O , the following results were obtained: the oxygen atoms of formic acid are homogeneously exchanged with water; the strongly bound intermediate however does not exchange oxygen with water; the 18 O‐labeled intermediate is oxidized in H…
Abstract The humidity sensitivities of SrSnO3 and BaSnO3 were enhanced slightly By means of calcining their hydroxides, which were prepared by a coprecipitation method. The partial substitution of the A site element of the perovskite-type oxides with lanthanum was more useful for the enhancement of the sensitivity. Th…
Azospirillum brasilense Cd was grown in ammonium–malate mineral salts medium in batch culture and in chemostat continuous culture. It was found that poly-β-hydroxybutyrate synthesis was favored under oxygen limitation in chemostat culture and under high C/N ratios towards the end of exponential growth in batch culture…
Abstract The tensile crazing and Charpy impact behavior of polypropylene modified with styrene‐butadiene copolymer (SBR) and ethylene‐propylene‐diene monomer (EPDM) was studied. Various rubber particle size distributions were obtained by varying the relative viscosities between rubbery phase and PP matrix. Transmissio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydrodynamic and thermodynamic behavior of short-chain polystyrene in toluene and cyclohexane at 34.5.degree.CKlaus Huber, Siegfried Bantle, Pierre Lutz, and Walther BurchardCite this: Macromolecules 1985, 18, 7, 1461–1467Publication Date (Print):July 1, 1985Publication Hist…
The ADAGE computer graphics system has been used to develop a modified Devonshire form for the elastic Gibbs function to describe the simple proper ferroelectric phases in the PbZrO3:PbTiO3 family of crystalline solid solutions. The unusual morphotropic phase boundary between tetragonal and rhombohedral forms has been…
The surface flashover of Teflon, plexiglass, quartz, Pyrex glass, Macor glass-ceramic, and sapphire solid insulators has been measured in vacuum (∼10−8 Torr, ∼10−6 Pa) and in atmospheric air using dc, ac (60 Hz), and 1.2/50-μsec lightning impulse voltages. The dependence of the flashover voltage on the following param…