Materials Literature
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Etude par diffraction RX de la phase (1) desordonnee, des phases (III-IV) modulees commensurables et de la phase (V) a basse temperature, pour une temperature respectivement egale a 293, 273, 261 et 168 K. La phase (I), cristallise dans Pmcn avec affinement jusqu'a 0,050. La phase (III) cristallise dans P2 1/c avec af…
Abstract The effect of chlorination on the corrosion resistance of different stainless steels in North Sea water has been studied, the sea‐water exposures being performed at two Norwegian seawater laboratories. In one laboratory test specimens, simulating various components used in a seawater cooling system, were imme…
The structural gene for the allosteric citrate synthase of Pseudomonas aeruginosa has been cloned from a genomic library by using the Escherichia coli citrate synthase gene as a hybridization probe under conditions of reduced stringency. Subcloning of portions of the original 10-kilobase-pair (kbp) clone led to isolat…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of boron nitride ceramics from 2,4,6-triaminoborazineChaitanya K. Narula, Riley Schaeffer, Ahbaya Datye, and Robert T. PaineCite this: Inorg. Chem. 1989, 28, 21, 4053–4055Publication Date (Print):October 1, 1989Publication History Published online1 May 2002Publishe…
X-ray absorption spectra at the O 1s edge are presented for O(2\ifmmode\times\else\texttimes\fi{}2)/Ni(111), O(2\ifmmode\times\else\texttimes\fi{}1)/Cu(110), and O/Si(111)-(7\ifmmode\times\else\texttimes\fi{}7). The spectra yield information on the distribution of O 2p and np state character in the unoccupied states.…
Several experiments have been conducted to investigate the preparation of barium titanyl oxalate tetrahydrate (BTO). Differential thermal analysis and thermogravimetric analysis were employed to investigate the thermal decomposition, and an X‐ray diffractometer and a transmission electron microscope were used to analy…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe chemistry of rhenium and tungsten porphyrin complexes in low oxidation states. Synthesis and characterization of rhenium and tungsten porphyrin dimers containing metal-metal multiple bondsJames P. Collman, James M. Garner, and L. Keith WooCite this: J. Am. Chem. Soc. 198…
Abstract The crystallization and the thermal behaviour of thin films of isotactic polypropylene/hydrogenated oligo(cyclopentadiene) of low molecular weight (iPP/HOCP) are studied using optical microscopy and differential scanning calorimetry (DSC). The spherulite growth rate, the overall crystallization rate and the e…
Pre-micellar and micellar sodium perfluorooctanoate solutions (SPFO) were examined conductometrically with added α-cyclodextrin(α-CD), β-cyclodextrin (β-CD), and γ-cyclodextrin (γ-CD). The order of stability of the 1:1 inclusion complex was (β-CD > γ-CD > α-CD determined largely by the goodness of fit of the flu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA high-potential mononuclear manganese(IV) complex. Synthesis, structure, and properties, including EPR spectroscopy and electrochemistry, of [Mn(HB(3,5-Me2pz)3)2] (ClO4)2 (pz = pyrazolyl)Michael K. Chan and William H. ArmstrongCite this: Inorg. Chem. 1989, 28, 20, 3777–3779…
The structural gene for AMP deaminase (AMD) from Saccharomyces cerevisiae has been cloned and characterized. A yeast strain deficient in AMP deaminase activity was produced and shown to be deficient in AMP deaminase protein by Western blot analysis. The gene for AMP deaminase was located in a lambda gt11 library of ye…
Basic symmetry properties of domain states, domain pairs, domain twins and walls in KSCN crystals are examined by group theoretical methods. Relations between domain states and domain pairs are expressed in matrix form and by permutation representation. Black and white space groups describing the symmetry of domain pa…
The degradation mechanisms of four polyolefins of differing molecular weight were studied by thermogravimetric analysis in order to identify the material properties which facilitate the extraction of ceramic injection molding vehicles. Three weight‐loss processes were identified and the corresponding activation energi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal structure and magnetic susceptibility of the dinuclear manganese(IV) complex Mn2O2(pic)4.cntdot.MeCN (picH = picolinic acid)Eduardo Libby, Robert J. Webb, William E. Streib, Kirsten Folting, John C. Huffman, David N. Hendrickson, and George ChristouCite this: Inorg.…
Intermetallic compounds with compositions in the vicinity of Al0·6 (Cu, Zn), (Li, Mg)0·3, namely the so-called R, Z, C and τ phases, have been selected for structural studies because of their presumed relation with the Al-Cu-Li quasicrystal. Neutron diffraction data strongly suggest unicity for short- and medium-range…
The anodic current‐voltage characteristics of P silicon which are obtained in electrolyte in the conditions corresponding to porous layer formation are studied in detail and analyzed according to an elementary model which accounts for the depletion layer at the silicon surface and the Helmholtz layer in the electrolyt…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelf assembly and dioxygen reactivity of an asymmetric, triply bridged diiron(II) complex with imidazole ligands and an open coordination siteWilliam B. Tolman, Avi Bino, and Stephen J. LippardCite this: J. Am. Chem. Soc. 1989, 111, 22, 8522–8523Publication Date (Print):Octo…
Fluorescein-labeled dextrans (FITC-D) from 3 to 5000 kDa (Stokes' radii from 1 to 40 nm) were used to study influx from the plasma into the peritoneum and efflux from the peritoneal cavity into the plasma in normal and ascites tumor-bearing mice and in mice whose peritoneal vessels had been rendered hyperpermeable by…
The fundamental aspects of the structure, the energies of the formation and of the activation of domain walls are summarized for several one-dimensional model systems. The effect of discreteness of atomic lattices on the activation energy of domain wall is described. The motion of walls will be also mentioned.
The first polyoxomolybdates with an MoIINO instead of an MoIV O group are compounds 2 and 3. They were obtained by reductive nitrosylation of complex 1 with hydroxylamine in methanol. Pentamolybdate 2 is transformed into hexamolybdate 3 upon dissolution, for example in CH2Cl2. The structures of both title compounds ar…