Materials Literature
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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…
Decomposition of trimethylgallium (TMG) and triethylgallium (TEG) in hydrogen and nitrogen atmospheres was studied by a quadrupole mass analyzer. The decomposition reactions of TMG in H 2 and in N 2 and of TEG in H 2 and in N 2 take place in the temperature ranges 370°–460°, 450°–570°, 220°–330°, and 270°–380°C, respe…
Abstract Heat capacity data of semicrystalline poly(oxymethylene) samples. Delrin and Celcon, are analysed in order to discuss the glass transition behaviour of this polymer. There are two types of non‐crystalline poly(oxymetheylene). the mobile and rigid amorphous parts. The glass transition of the former occurs in a…
The biodegradation of the copolymer 50:50 poly(DL-lactide-co-glycolide)-lypressin microcapsules was studied by light and electron microscopic methods and 14C release. Intramuscular injection sites of microcapsules in rats were studied by dissecting and conventional light microscopy as well as scanning (SEM) and transm…
Abstract The Al chemistry of seeps, soil solutions and soils was evaluated at the Hubbard Brook Experimental Forest in New Hampshire. Alumino‐organic substances predominated in solutions and in the free Al fraction of soils. Concentrations of both organic and inorganic forms of Al were highest at the higher elevations…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation A. Koma, K. Sunouchi, T. Miyajima; Summary Abstract: Fabrication of ultrathin heterostructures wi…
The variance in the sedimentation speed for a homogeneous suspension of solid spheres in a Stokes fluid is calculated for a particular choice of the distribution function of the spheres. In the infinite particle number limit, the variance is found to be infinite.