Materials Literature
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SUMMARY A mathematical model for soil profile evolution is developed in three parts; respectively for the weathering profile, the organic profile and for the inorganic profile associated with nutrient cycling. Processes modelled are percolation, equilibrium solution, leaching, ionic diffusion, organic mixing, leaf fal…
Two highly purified syntrophic associations resulting in acetogenesis from stearate (SM) and oleate (OM) were obtained from the sludges of a sewage digestor. In both cases, Methanospirillum hungatei together with short, motile, gram-negative, nonfluorescent rods morphologically similar to Syntrophomonas wolfei were id…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFactors favoring an M...H-C interaction in metal-methyl complexes. An MO analysisOdile Eisenstein and Y. JeanCite this: J. Am. Chem. Soc. 1985, 107, 5, 1177–1186Publication Date (Print):March 1, 1985Publication History Published online1 May 2002Published inissue 1 March 1985…
The thickness of natural air-formed oxides on Al, Si, Fe, Ni, and Ta is determined by Auger electron spectroscopy (AES), depth profiling, and angle-resolved photoelectron spectroscopy (XPS). The sputter rate of the oxides is measured under the same conditions and their values are given with respect to a certified stan…
The synthesis is described and the mesomorphic properties have been tested for two homologous series of compounds with the isothiocyanato (-NCS) terminal group: 4-(trans-4′-n-alkylcyclohexyl)isothiocyanatobenzenes (CHBT—formula 1) and 5-trans-n-alkyl-2-(4′-isothiocyanatophenyl)-1,3-dioxans (DBT—formula 2). CHBT are ne…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacterization and activity of some mixed metal oxide catalystsTetsuro Seiyama, Noboru Yamazoe, and Koichi EguchiCite this: Ind. Eng. Chem. Prod. Res. Dev. 1985, 24, 1, 19–27Publication Date (Print):March 1, 1985Publication History Published online1 May 2002Published iniss…
The mechanical behaviour of a Ti50Ni47Fe3 alloy, which exhibits a well-defined premartensitic transition and a subsequent martensitic transformation, was studied systematically using tensile tests over a wide temperature range covering M s to above T R. Two-stage yielding was observed in the temperature range between…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCatalytic formation of hydrogen and carbon-carbon bonds on illuminated zinc sulfide generated from zinc dithiolenesN. Zeug, J. Buecheler, and Horst KischCite this: J. Am. Chem. Soc. 1985, 107, 6, 1459–1465Publication Date (Print):March 1, 1985Publication History Published on…
We have identified in Bacillus subtilis an analogue of the Escherichia coli RecA protein. Its activities suggest that it has a corresponding role in general genetic recombination and in regulation of SOS (DNA repair) functions. The B. subtilis protein (B. subtilis Rec) has a Mr of 42,000 and cross-reacts with antisera…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure of a heteropoly blue. The four-electron reduced .beta.-12-molybdophosphate anionJulie N. Barrows, Geoffrey B. Jameson, and Michael T. PopeCite this: J. Am. Chem. Soc. 1985, 107, 6, 1771–1773Publication Date (Print):March 1, 1985Publication History Published online1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA further example of a dinuclear copper(II) complex involving monoatomic acetate bridges. Synthesis, crystal structure, and spectroscopic and magnetic properties of bis(.mu.-acetato)bis(7-amino-4-methyl-5-aza-3-hepten-2-onato(1-))dicopper(II)Jean Pierre Costes, Francoise Dah…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCatalytic reaction on both sides of a metalloporphyrin plane. Alternating copolymerization of phthalic anhydride and epoxypropane with an aluminum porphyrin-quaternary salt systemTakuzo Aida and Shohei InoueCite this: J. Am. Chem. Soc. 1985, 107, 5, 1358–1364Publication Date…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTColloidal catalysis: the effect of sol size and concentrationPaul L. Freund and Michael SpiroCite this: J. Phys. Chem. 1985, 89, 7, 1074–1077Publication Date (Print):March 1, 1985Publication History Published online1 May 2002Published inissue 1 March 1985https://pubs.acs.org…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEuropium(III) luminescence excitation spectroscopy. Quantitive correlation between the total charge on the ligands and the 7F0 .fwdarw. 5D0 transition frequency in europium(III) complexesMichael Albin and William D. Horrocks Jr.Cite this: Inorg. Chem. 1985, 24, 6, 895–900Pub…
A solute‐vacancy interaction model (SVIM) is proposed to account for the effects of minor alloying elements ( e.g. , Mo) on the breakdown of passive films. This model, which is an extension of the point‐defect model (15–17) that was previously developed to account for the growth and breakdown of passive films, assumes…
Metal-free copper and cobalt(II) binuclear phthalocyanines, in which the two phthalocyanine nuclci are covalently linked through five-atom bridges, have been prepared and characterized. Some new metal-free, copper, cobalt(II), and zinc 2,9,16,23-tetraalkoxyphthalocyanines, some of which are extremely soluble in organi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMarker displacement measurements of polymer-polymer interdiffusionPeter F. Green, Christopher J. Palmstrom, James W. Mayer, and Edward J. KramerCite this: Macromolecules 1985, 18, 3, 501–507Publication Date (Print):March 1, 1985Publication History Published online1 May 2002P…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydride sponge: 1,8-naphthalenediylbis(dimethylborane)Howard Edan KatzCite this: J. Am. Chem. Soc. 1985, 107, 5, 1420–1421Publication Date (Print):March 1, 1985Publication History Published online1 May 2002Published inissue 1 March 1985https://pubs.acs.org/doi/10.1021/ja0029…
Abstract 1. The structure of the products obtained from the reaction of NR latex with peracetic acid depends on the reaction conditions. 2. Under controlled conditions, specific levels of epoxidized NR (ENR) can be obtained. A random epoxide distribution has been observed. These materials undergo strain crystallizatio…
The formation of metastable t ‐ZrO 2 by thermal treatment was studied in a systematic way on two different samples: a gel (G) and zirconyl acetate (A). The results show that initially nucle‐ation of t ‐ZrO 2 is favored by creation of anionic vacancies with trapped electrons. At higher temperatures the electronic defec…