Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotosensitive monolayers. Studies of surface-active spiropyrans at the air-water interfaceDavid A. Holden, Helmut Ringsdorf, Veerle Deblauwe, and Georges SmetsCite this: J. Phys. Chem. 1984, 88, 4, 716–720Publication Date (Print):February 1, 1984Publication History Publishe…
The temperature dependences of the conductivity CsHSO4, CsHSeO4, RbHSO4, RbHSEO4, and NH4HSO4 have been measured and optical investigation was also made. It was found that the high temperature phase transitions in CsHSO4, CsHSeO4, and RbHSeO4 at 413, 400 and 446 K, respectively are the transitions to the superionic st…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhase equilibria and transition in mixtures of a homopolymer and a block copolymer. 1. Small-angle x-ray scattering studyWang Cheol Zin and Ryong Joon RoeCite this: Macromolecules 1984, 17, 2, 183–188Publication Date (Print):February 1, 1984Publication History Published onli…
Abstract ZnS sols containing alcohol or formate as reactants for positive holes and nitrous oxide or carbon dioxide as reactants for electrons were illuminated and the yields of the various products determined. Alcohols are oxidized via a one‐hole mechanism, the product being an 1‐hydroxyalkyl radical which undergoes…
Abstract A computer program based on the use of Gaussian expressions for the x‐ray distribution with depth [ϕ(ρz)curves] was tested on its usefulness for quantitative electron probe microanalysis. As the good results originally claimed for a similar program could not be reproduced initially, it was subjected to a deta…
A densifcation algorithm for irradiated UO 2 fuel, modified to reflect a rapid densification rate from 0 to 10 MW.h/kg U, is presented. Included in a fuel performance code, the algorithm gives improved agreement between measured and calculated sheath strains.
Diamagnetic and paramagnetic amine derivatives of cellulose have been prepared from selectively oxidized cellulose precursors via the reductive amination method using sodium cyanoborohydride. 4-Amino-2,2,6,6-tetramethylpiperidine-1-oxyl was employed in the syntheses of nitroxide spin labelled cellulose derivatives 4 a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDesign, synthesis, and testing of potential antisickling agents. 3. Ethacrynic acidPaul E. Kennedy, Franki L. Williams, and Donald J. AbrahamCite this: J. Med. Chem. 1984, 27, 2, 103–105Publication Date (Print):February 1, 1984Publication History Published online1 May 2002Pu…
Abstract The CHCl 3 ‐soluble fraction of polythiophene, prepared by catalytic coupling of thienyl Grignard reagent, was characterized by VPO, GPC, TLC, 1 H NMR, and WAXS measurements. Iodine doping of this polymer shows a maximum conductivity of the order of 5 Ω −1 · cm −1 , much higher than that of I 2 ‐doped compact…
Anodized thin film samples of single phase nickel 13 w/o (weight percent) molybdenum have been analyzed by scanning transmission electron microscopy using a variety of examination modes. It is established that the anodic film comprises a fine mosaic of almost epitaxial crystalline nickel oxide particles of 3 nm diamet…
Abstract With particular reference to the use of Na2HPO4 as nucleation catalyst for crystallization of CH3CO2Na·3H2O, influences of preheating temperature and time were studied on the crystallization of CH3CO2Na·3H2O from three kinds of CH3CO2Na aqueous solutions, whose concentrations were 58.0, 60.3, and 62.8 wt%. In…
The mechanical behaviour of one or both shell valves of five species of pectinacean and one anomiacean was determined using strain gauge rosettes attached to the inner surfaces of the valves. A multiple linear regression analysis accounted for over 64% of the total vanance in tensile shell compliance. The important sh…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetallotetraphenylporphyrin-catalyzed oxidation of 2,6-di-tert-butylphenolXian Yuan Wang, Ramunas J. Motekaitis, and Arthur E. MartellCite this: Inorg. Chem. 1984, 23, 3, 271–275Publication Date (Print):February 1, 1984Publication History Published online1 May 2002Published…
Bowman's membrane, seen as a homogeneous layer in light microscopy, is demonstrated by transmission electron microscopy as a layer with fibrils in random distribution, for which reason the term used at present is Bowman's layer. Frozen resin cracking demonstrates that the fibrils of the layer run in certain patterns a…
Systematic variations in sericite composition are present in each of the areas studied. In the Roosevelt geothermal system, Si increases and tetrahedral Al decreases with increasing depth in the system. Sericites from Southwest Tintic increase in Si and decrease in interlayer cations from biotite through quartz-serici…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of ammonia-nitric oxide reactions on vanadium oxide catalystsMilton Farber and Sigmund P. HarrisCite this: J. Phys. Chem. 1984, 88, 4, 680–682Publication Date (Print):February 1, 1984Publication History Published online1 May 2002Published inissue 1 February 1984http…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe photoreversible oxidative-addition, reductive-elimination reactions iron + molecular hydrogen .dblharw. iron hydride (FeH2) in low-temperature matrixesGeoffrey A. Ozin and John G. McCaffreyCite this: J. Phys. Chem. 1984, 88, 4, 645–648Publication Date (Print):February 1,…
A method for spectroscopically detecting interstellar graphite grains is proposed. If pure crystalline graphite grains constitute an appreciable portion of the interstellar grain mixture, they will produce a spectral feature at 11.52 microns which may be detected in either emission or absorption along suitable lines o…
In the laboratory the planulae of Cyanea are exposed to a choice of substrates. Their behavior, the length of time required for them to attach, and the size they attain after attachment differs between glass (hydrophilic) and plastic (hydrophobic) surfaces. The correlation of these differences with wettability is show…
Abstract Single‐crystal x‐ray diffraction analysis is performed on a model compound (bisurethane of diphenylmethane‐4–monoisocyanate and butanediol‐1,4) for the thermoplastic polyurethane (TPU) hard segment formed from diphenylmethane‐4,4′‐diisocyanate and butanediol‐1,4. The resulting structure is compared to structu…