Luciano Antolini、A.C. Fabretti、Dante Gatteschi 等 5 位作者1991-12-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, crystal and molecular structure, and magnetic properties of bis[(.mu.-3,5-diamino-1,2,4-triazole-N1,N2-bis(.mu.-3,5-diamino-1,2,4-triazolato-N1,N2)triaquacobalt(II))]cobalt(III) trichloride nonahydrateL. Antolini, A. C. Fabretti, D. Gatteschi, A. Giusti, and R. Se…
Metal complexes synthesis and propertiesMagnetism in coordination complexesSynthesis and Characterization of Heterocyclic Compounds
Steven Holdcroft1991-12-01Journal of Polymer Science Part B Polymer Physics
Abstract Intrinsic viscosities and gel permeation chromatography data were used to evaluate the Mark–Houwink constants of the soluble electronically conducting polymer, poly(3‐hexylthiophene) (P3HT): K and a are 2.28 × 10 ‐3 cm 3 /g and 0.96, respectively, in tetrahydrofuran (THF) at 25°C. Mark–Houwink constants were…
Organic Electronics and PhotovoltaicsConducting polymers and applicationsAnalytical Chemistry and Sensors
Balwant Singh、R. J. Gilkes1991-12-01Clay Minerals
Abstract The Kämpf & Schwertmann (1982) procedure for concentrating iron oxides in soil clays by dissolution of kaolin and gibbsite by boiling for 1 h in 5 m NaOH may not dissolve all kaolin, and also results in the precipitation of sodalite. For the complete dissolution of kaolin in kaolin-rich soil clays a boili…
Soil and Unsaturated FlowClay minerals and soil interactionsIron oxide chemistry and applications
V. C. Farmer、G. S. R. Krishnamurti、Pan Huang1991-12-01Clays and Clay Minerals
Abstract Solutions containing AlCl 3 and Si(OH) 4 (concentrations ≤ 1.5 mM with molar Si:Al ratios of 1:2, 1:1 and 3:1) and FeCl 2 (0, 0.5 and 1.0 mM) were adjusted to pH 8 with Ca(OH) 2 , and incubated at 23°C and 89°C without exclusion of air in the presence of CaCO 3 for 8–12 weeks. The products were characterized…
Clay minerals and soil interactionsIron oxide chemistry and applicationsLayered Double Hydroxides Synthesis and Applications
H. Lange、G. Wötting、Gerhard Winter1991-12-01Angewandte Chemie
Abstract Aufgrund der günstigen Eigenschaftskombination von Siliciumnitridkeramik ‐ hohe Festigkeit bei hohen Temperaturen, Korrosions‐ und Verschleißbeständigkeit, große Härte und geringe Dichte ‐ist dieser Werkstoff von großem Interesse für Hochleistungsanwendungen im Maschinen‐, Motoren‐ und Turbinenbau. Die Basis…
Advanced ceramic materials synthesisMetal and Thin Film MechanicsMXene and MAX Phase Materials
J. J. Fay、Charles J. Murphy、D. A. Thomas 等 4 位作者1991-12-01Polymer Engineering and Science
Abstract The areas under the linear loss modulus versus temperature curves (loss area, LA) and tan δ versus temperature curves (TA) were evaluated for a number of acrylic, methacrylic, styrenic and butadiene based copolymers and interpenetrating polymer networks, IPNs, as a function of crosslink density and comliositi…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesPolymer composites and self-healing
C. Breen1991-12-01Clay Minerals
Abstract Four 15 g samples of an unsedimented Wyoming bentonite were treated with 200 cm 3 of 0·025, 0·050, 0·100 and 0·250 mol dm −3 H 2 SO 4 for 1 h at room temperature (samples I–IV, respectively). Three further 15 g samples were treated with 200 cm 3 of 50% (v/v) H 2 SO 4 for 1 h at 20°C (sample V), and 1 and 2 h…
Adsorption and biosorption for pollutant removalClay minerals and soil interactionsThermal and Kinetic Analysis
D. Freitag、Gerd Fengler、L. Morbitzer1991-12-01Angewandte Chemie International Edition in English
Abstract Polycarbonate together with the acrylonitrile/butadiene/styrene copolymers, and the poly amides constitute the leading groups of engineering thermoplastics; for polycarbonate in particular, continued dynamic growth is prophesized. The underlying reason for this lies not only in its outstanding combination of…
Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties
Colin J. Schaverien、A.G. Orpen1991-12-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemistry of (octaethylporphyrinato)lutetium and -yttrium complexes: synthesis and reactivity of (OEP)MX derivatives and the selective activation of O2 by (OEP)Y(.mu.-Me)2AlMe2Colin J. Schaverien and A. Guy OrpenCite this: Inorg. Chem. 1991, 30, 26, 4968–4978Publication Date…
Organometallic Complex Synthesis and CatalysisMetal complexes synthesis and propertiesPorphyrin and Phthalocyanine Chemistry
B. P. van West、R. Byron Pipes、Suresh G. Advani1991-12-01Polymer Composites
Abstract Commingled fabrics composed of yarns containing both the reinforcement and the matrix in fiber form are an innovative preform for thermoplastic composite materials. The material is consolidated into a rigid structure by the application of heat and pressure. A mathematical model of the consolidation process fo…
Mechanical Behavior of CompositesTextile materials and evaluationsMaterial Properties and Processing
Sam‐Rok Keum、Mun-Suk Hur、Peter M. Kazmaier 等 4 位作者1991-12-01Canadian Journal of Chemistry
A kinetic and ultraviolet–visible study of a series of thermo- and photochromic dyes is reported. Ultraviolet irradiation of the indolino-benzospiropyran derivatives 1′–4′ leads to their transformation to the open-chain, colored merocyanine forms, which undergo thermal ring closure into the colorless spiro forms. The…
Porphyrin and Phthalocyanine ChemistryPhotochromic and Fluorescence ChemistrySynthesis of Indole Derivatives
C.J. Harding、Vickie McKee、Jane Nelson1991-12-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHighly delocalized Cu(I)/Cu(II); a copper-copper bond?Charlie Harding, Vickie McKee, and Jane NelsonCite this: J. Am. Chem. Soc. 1991, 113, 25, 9684–9685Publication Date (Print):December 1, 1991Publication History Published online1 May 2002Published inissue 1 December 1991ht…
Organometallic Complex Synthesis and CatalysisMagnetism in coordination complexesOrganic and Molecular Conductors Research
Chunnian Shi、Fred C. Anson1991-12-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMultiple intramolecular electron transfer in the catalysis of the reduction of dioxygen by cobalt meso-tetrakis(4-pyridyl)porphyrin to which four Ru(NH3)5 groups are coordinatedChunnian Shi and Fred C. AnsonCite this: J. Am. Chem. Soc. 1991, 113, 25, 9564–9570Publication Dat…
Electrocatalysts for Energy ConversionPorphyrin and Phthalocyanine ChemistryCO2 Reduction Techniques and Catalysts
Eric Blanc、D. Schwarzenbach、H. D. Flack1991-12-01Journal of Applied Crystallography
Methods, implemented into a computer program ( LSABS ), are described which calculate transmission factors and their first derivatives with respect to the positions of the faces of a convex polyhedral monocrystal. Both Gaussian and analytical integration procedures are considered in detail. LSABS has been implemented…
Calcium Carbonate Crystallization and InhibitionCrystallization and Solubility StudiesX-ray Diffraction in Crystallography
D. Balzer1991-12-01Tenside Surfactants Detergents
Article Alkylpolyglucoside - physikochemische Eigenschaften und Anwendung / Alkylpolyglucosides, their Physico-chemical Properties and their Uses was published on December 1, 1991 in the journal Tenside Surfactants Detergents (volume 28, issue 6).
biodegradable polymer synthesis and properties
Wolfgang A. Herrmann、Richard W. Fischer、Dieter W. Marz1991-12-01Angewandte Chemie
Ausgeprägte Lewis‐Acidität ist die Erklärung für die außergewöhnliche Aktivität der Titelverbindung in der katalytischen Olefin‐Epoxidierung mit Wasserstoffperoxid. Das System MTO/ t ‐C 4 H 9 OH/H 2 O 2 epoxidiert selektiv und effizient Olefine unter sehr schonenden Bedingungen (‐ 30 bis + 60°C, in der Regel Raumtempe…
Organometallic Complex Synthesis and CatalysisPolyoxometalates: Synthesis and ApplicationsChemical Synthesis and Reactions
Hideo Hosono、Yoshihiro Abe、Hiroshi Imagawa 等 5 位作者1991-12-01Physical review. B, Condensed matter
We have found a decrease in the intensity of the 7.6-eV band and the appearance of the Si-H band upon heating ${\mathrm{SiO}}_{2}$ glasses, which were prepared by a method involving processes of dehydration with ${\mathrm{Cl}}_{2}$ gas, in ${\mathrm{H}}_{2}$ gas. The absorption cross section of the 7.6-eV band evaluat…
Glass properties and applicationsThin-Film Transistor TechnologiesPhotonic Crystals and Applications
Pamela F. Jones、Teresa Jakubowicz、Brian A. Hemmings1991-12-01Cell Regulation
A novel serine/threonine protein kinase (termed rac-PK) has recently been identified and cloned from cDNA libraries derived from the human cell lines MCF-7 and WI38. A second form of this protein kinase, termed rac protein kinase beta, has been identified from cDNAs derived from the same cell lines. These two closely…
Protein Structure and DynamicsRNA and protein synthesis mechanismsEnzyme Structure and Function
Colin J. Marsden、Kenneth Hedberg、M. Ludwig 等 4 位作者1991-12-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular structure of chromyl nitrate (CrO2(NO3)2) in the gas phase: a novel form of coordination for chromium?Colin J. Marsden, Kenneth Hedberg, M. M. Ludwig, and Gary L. GardCite this: Inorg. Chem. 1991, 30, 25, 4761–4766Publication Date (Print):December 1, 1991Publicatio…
Thermal and Kinetic AnalysisChemical Synthesis and CharacterizationX-ray Diffraction in Crystallography
F. Allan Andersen、Damir Kralj1991-12-01Applied Spectroscopy
Infrarødspektra, vaterit, calcit, analysis
Calcium Carbonate Crystallization and InhibitionCrystallization and Solubility StudiesThermal and Kinetic Analysis