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Abstract This paper presents the results of an experimental study of muscovite solid solutions in the system K 2 O- M 2+ O-Al 2 O 3 -SiO 2 -H 2 O-(HF), with M 2+ = Mg 2+ or Fe 2+ in the temperature range 300-700°C under 2 kbar P H 2 O . Muscovite solid solutions can be described, in this system, as the result of two s…
In 1925, H. S. Taylor [1] hypothesized that a heterogeneously catalyzed reaction occurs predominantly at a few distinct places on the catalyst's surface called “active sites.” Many models of the active site have been proposed [1–32] over the years. However, at present there is little agreement about what causes the ac…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTautomerism in 2-substituted 5,10,15,20-tetraphenylporphyrinsMaxwell J. Crossley, Margaret M. Harding, and Sever. SternhellCite this: J. Am. Chem. Soc. 1986, 108, 13, 3608–3613Publication Date (Print):June 1, 1986Publication History Published online1 May 2002Published inissu…
The crystal structure of high cordierite and that of high cordierite solid solutions containing either Mn or Ga or Ge were refined. The structural changes caused by substitutions and the characteristic features of deformations of each T1O 4 , T2O 4 tetrahedron and MO 6 octahedron were clarified. Thorough crystal chemi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPrimary thermal decomposition processes in aliphatic polyesters investigated by chemical ionization mass spectrometryDomenico Garozzo, Mario Giuffrida, and Giorgio MontaudoCite this: Macromolecules 1986, 19, 6, 1643–1649Publication Date (Print):June 1, 1986Publication Histor…
We show that the velocity and shape of two-dimensional dendritic crystals can be determined by solving the steady-state evolution equation at finite surface tension. We find that in the zero undercooling limit, crystal anisotropy is necessary to obtain finite velocities. Furthermore, the "solvability" condition at zer…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal decomposition of benzene on the rhodium(111) crystal surfaceB. E. Koel, J. E. Crowell, B. E. Bent, C. M. Mate, and G. A. SomorjaiCite this: J. Phys. Chem. 1986, 90, 13, 2949–2956Publication Date (Print):June 1, 1986Publication History Published online1 May 2002Publis…
Acetaldehyde oxidation has been studied in experiments at temperatures of 553 and 713 K carried out in a low pressure, static reactor and in numerical modeling calculations using a detailed chemical kinetic reaction mechanism. The results of the experimental study were used to construct and validate the reaction mecha…
Component B, the heat-stable low-molecular-weight cofactor required for methane production by dialyzed cell-free extracts of Methanobacterium thermoautotrophicum, has been purified to homogeneity and its structure assigned. Results of low-resolution fast-atom-bombardment and field-desorption mass spectrometry indicate…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTrichlorotitanium and alkoxytitanium homoenolates. Preparation, characterization, and utilization for organic synthesisEiichi. Nakamura, Hiroji. Oshino, and Isao. KuwajimaCite this: J. Am. Chem. Soc. 1986, 108, 13, 3745–3755Publication Date (Print):June 1, 1986Publication Hi…
Existing experimental evidence strongly suggests that the mechanism of activity of the Antarctic AFGP molecules is the inhibition of ice growth by competitive adsorption onto the growth sites of ice. The data further suggest the blocking of the formation of large critical nuclei for ice growth. Experiments showing tha…
Dendrites of a solid growing steadily in an undercooled melt have a shape given by the solution of certain nonlinear integrodifferential equations. If one does not take account of the Gibbs‐Thomson condition, these equations have an exact solution due to Ivantsov and to Cahn and Horway. For elementary dimensional reas…
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 P. Moldenaers, J. Mewis; Transient Behavior of Liquid Crystalline Solutions of Poly(benzylglutama…
Poly(organophosphazenes) have been synthesized with alkyl-ether-alkoxy groups attached to the phosphorus atoms of the skeleton. These species are water-stable and either water-soluble or hydrophilic polymers. Specific members of this series form complexes with metal salts, which are excellent solid electrolyte materia…
Diamond thin films have been formed by thermal chemical vapor deposition (thermal CVD) using the organic compounds such as CH 3 OH, C 2 H 5 OH, CH 3 COCH 3 C 2 H 5 OC 2 H 5 , and (CH 3 ) 3 N. The films are grown on the silicon substrates with high growth rate (8–10 µm/h) under the pressure ranging 1–800 Torr. This gro…
Cloned bovine aortic endothelial cells were cultured with [35S]Na2SO4 and proteolyzed extensively with papain. Radiolabeled heparan sulfate was isolated by DEAE-Sephacel chromatography. The mucopolysaccharide was then affinity fractionated into two separate populations utilizing immobilized antithrombin. The heparan s…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTheoretical aspects of metal atom clustersJaroslav Koutecky and Piercarlo FantucciCite this: Chem. Rev. 1986, 86, 3, 539–587Publication Date (Print):June 1, 1986Publication History Published online1 May 2002Published inissue 1 June 1986https://pubs.acs.org/doi/10.1021/cr0007…
The fracture repair of reptilian dermal bones has not previously been reported. Moreover, repair of fractured dermal bones in birds and mammals involves secondary chondrogenesis whereas that of amphibians does not. Therefore an investigation into the repair of fractured reptilian dermal bones could reveal the stage du…
Mechanoelectrical conversion properties of dry human skin have been examined and their origin investigated in dermis, epidermis and horny layer. Shear stress piezoelectricity is observed in all three cutaneous sections. Piezoelectric properties of dermis can be ascribed to its collagen structural network, while the pi…
A M Stoneham 1985 Oxford: Oxford University Press xix + 954 pp price £19.50 (paperback) ISBN 0 19 851378 X Most solid state physicists will inevitably be concerned in their research with the various types of defect present in the materials they deal with and will need to know something of their electronic properties.…