Phalguni Chaudhuri、Manuela Winter、Peter Fleischhauer 等 6 位作者1990-01-01Journal of the Chemical Society Chemical Communications
A series of linear heterotrinuclear complexes with a tris(dimethylglyoximato) metal(II) as bridging ligand, [LFeIII{µ-(dmg)3MII}FeIIIL](ClO4)2(M = Zn, Cu, Ni, Co, Fe, Mn), where L represents the cyclic triamine 1,4,7-trimethyl-1,4,7-triazacyclononane, has been synthesized and characterized by X-ray crystallography and…
Magnetism in coordination complexesMetal-Catalyzed Oxygenation MechanismsPorphyrin Metabolism and Disorders
John E. Frey、Anne M. Andrews、Daniel G. Ankoviac 等 10 位作者1990-01-01The Journal of Organic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharge-transfer complexes of tetracyanoethylene with cycloalkanes, alkenes, and alkynes and some of their aryl derivativesJohn E. Frey, Anne M. Andrews, Daniel G. Ankoviac, Douglas N. Beaman, Louis E. Du Pont, Thomas E. Elsner, Susan R. Lang, Marian A. Oosterbaan Zwart, Rona…
Magnetism in coordination complexesOrganic and Molecular Conductors ResearchOrganic Chemistry Cycloaddition Reactions
F. A. Lewis1990-01-01Pure and Applied Chemistry
Abstract
Hydrogen embrittlement and corrosion behaviors in metals
D. Damidot、S. A. Stronach、Andrew Kindness 等 5 位作者1990-01-01Cement and Concrete Research
The solubilities of calcium hemicarboaluminate, calcium monocarboaluminate and calcium tricarboaluminate have been determined and the equilibrium phase diagram for the CaO-Al 2 O 3 -CaCO 3 -H 2 O closed system at 25°C has been calculated. Six isothermally invariant points have been located involving six stable hydrate…
Hydrocarbon exploration and reservoir analysisMethane Hydrates and Related PhenomenaCalcium Carbonate Crystallization and Inhibition
Y. Ikenoue、Yoshihiro Saida、Masa-Aki Kira 等 6 位作者1990-01-01Journal of the Chemical Society Chemical Communications
A self-doped conducting polymer having alkanesulphonic acid groups on polythiophene has been directly synthesized from sodium 3-(3-thienyl)propanesulphonate 3 by chemical polymerization with FeCl3 in an aqueous medium; the resulting acid form of this polymer after work-up shows highly self-doped behaviour both in wate…
Conducting polymers and applicationsPolyoxometalates: Synthesis and ApplicationsSynthesis and properties of polymers
Joseph H. Boyer、Vayalakkavoor T. Ramakrishnan、M. Vedachalam1990-01-01Heterocycles
Glyoxal condensed with 1,4-diformyl-2,3,5,6-tetrahydroxypiperazie in the presence of sulfuric and nitric acids to give the title compound.We wish to repon 4.10-diniuo-2,6,8,12-letraoxa-4,lO-diazatetracyclo[5.5.0.~~~O~~'~ldodecan (2) as the fxst example of a dioxaazepane and the densest dinitramine (including dinitrami…
Crystal structures of chemical compoundsLanthanide and Transition Metal ComplexesElectron Spin Resonance Studies
A. Gordon、I. D. Vagner、P. Wyder1990-01-01Physical review. B, Condensed matter
The kinetics of first-order diamagnetic phase transitions into a Condon domain phase, which may occur in normal metals under a strong magnetic field, is considered. Expressions for profile, velocity, and width of the interface between the homogeneous and diamagnetic domain phase are obtained. Critical sizes of cluster…
Solidification and crystal growth phenomenaMagnetic Properties and ApplicationsMagnetic Properties of Alloys
Katsumi UNE、Shinji KASHIBE1990-01-01Journal of Nuclear Science and Technology
Uranium dioxide fuels irradiated in a commercial BWR during 1 to 4 cycles (burn-up: 6–28 GWd/t) have been annealed in an out-of-pile condition and the release rate of 85Kr was measured continuously. The annealing temperature ranged 1,500–1,800°C. The effects of temperature and burn-up have been studied on burst releas…
Nuclear reactor physics and engineeringHigh Temperature Alloys and CreepNuclear Materials and Properties
Naohiro Hozumi、Masatoshi Ishida、Tatsuki Okamoto 等 4 位作者1990-01-01IEEE Transactions on Electrical Insulation
AC and impulse voltages were applied to needle electrode specimens modeling the interface of the semiconducting layer and insulation of XLPE (cross-linked polyethylene) cables. TEM (transmission electron microscope) photographs of minute trees (>
High voltage insulation and dielectric phenomenaPower Transformer Diagnostics and InsulationElectrostatic Discharge in Electronics
Kiyotaka Asakura、Kyoko K. Bando、Yasuhiro Iwasawa1990-01-01Journal of the Chemical Society Faraday Transactions
The structure and behaviour of Ru3(CO)12 supported on inorganic oxides such as V2O5, SiO2, TiO2, Al2O3, K-Al2O3, MgO and MnO2 have been studied by means of EXAFS, IR and TPD. Ru3(CO)12 was physisorbed on V2O5, SiO2, and TiO2, whereas [Ru3(CO)10(µ-H)(µ-O)] and [HRu3(CO)11]– were formed on Al2O3 and the basic supports M…
Catalytic Processes in Materials ScienceMesoporous Materials and CatalysisCatalysis and Oxidation Reactions
Jürgen Dahlmann、G. Rafler、Klaus Fechner 等 4 位作者1990-01-01British Polymer Journal
Abstract The ring‐opening polymerization of D, L ‐dilactide and an equimolar dilactide‐diglycolide mixture has been investigated. Conversion and molecular weight in the lactide bulk polymerization are determined not only by the kinetics of the primary ring‐opening reaction, but also by the concentration and extent of…
Advanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and propertiesMaterial Properties and Applications
Gabriele Centi、Virginia Lena、Ferruccio Trifirò 等 7 位作者1990-01-01Journal of the Chemical Society Faraday Transactions
The catalytic behaviour of H5PV2Mo10O40 heteropoly acid in the oxidation of n-butane to maleic anhydride is analysed in relation to that of its partially salified Cs salt and their FTIR spectra, UV–VIS diffuse reflectance spectra, thermogravimetry and reducibility tests as well as solid state 51V NMR and EPR character…
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsCatalysis and Oxidation Reactions
R. Bartnikas1990-01-01IEEE Transactions on Electrical Insulation
The development of the various partial-discharge test methods as applied to cables, capacitors transformers, and rotating machines is examined in an historical context. Special emphasis is placed on various discharge pulse analysis techniques, although it is pointed out that integrated charge measurements should recei…
High voltage insulation and dielectric phenomenaPower Transformer Diagnostics and InsulationElectrostatic Discharge in Electronics
Wayne C. Tucker、Richard J. P. Brown、Laureen Russell1990-01-01Journal of Composite Materials
A graphite/polymer composite material was directly coupled with: 2014 aluminum (bare and hard-anodized), pure grade titanium, 316 stainless steel and monel. Samples were then immersed in natural seawater. The titanium couple was inactive. Stain less steel and monel changed behavior from noncorroding to crevice and pit…
Graphite, nuclear technology, radiation studies
Yoshinori Naruta、Fumito Tani、Kazuhiro Maruyama1990-01-01Journal of the Chemical Society Chemical Communications
Iron porphyrins that are modified on both faces by chiral binaphthalenes catalysed asymmetric oxidation of sulphides in fair to good enantiomeric excesses and excellent turnover numbers of the catalysts in the presence of 1-methylimidazole.
Porphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation MechanismsOxidative Organic Chemistry Reactions
Anders Reimann、Roland Mörck、Hirohisa Yoshida 等 5 位作者1990-01-01Journal of Applied Polymer Science
Abstract Polyurethane (PU) films were prepared by solution casting using a three‐component system consisting of a low molecular weight fraction of softwood kraft lignin (KL), polyethylene glycol (PEG) of various molecular weights, and crude diphenylmethane diisocyanate (MDI) as starting materials. All films were prepa…
Polymer Nanocomposites and PropertiesPolymer composites and self-healingLignin and Wood Chemistry
Richard M. Pollastro1990-01-01OpenAlex
Abstract Clay minerals provide information on the burial and thermal history of sedimentary rocks that is useful in the exploration, evaluation, and production of hydrocarbons. In particular, changes in clay minerals may be used as geothermometers that record temperatures corresponding to various stages of hydrocarbon…
Geological and Geochemical AnalysisClay minerals and soil interactionsGeological and Geophysical Studies Worldwide
M. Kerkar、James B. Robinson、Adrian Forty1990-01-01Faraday Discussions of the Chemical Society
The structure of the passive film that protects iron and iron/chromium alloys from corrosion has been investigated in situ in an aqueous environment using X-ray absorption spectroscopy, with fluorescence yield detection. From an analysis of the EXAFS and XANES it has been shown that the film formed on iron consists of…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsElectron and X-Ray Spectroscopy Techniques
Philippe Ribière、P. Oswald1990-01-01Journal de physique
We have studied the behavior of a cholesteric liquid crystal sandwiched between two plates, with homeotropic anchoring, in the presence of an electric field. By changing two control parameters, namely the sample thickness and the electric field magnitude, we were able to characterize different types of solutions : a n…
Liquid Crystal Research AdvancementsAdvanced Materials and MechanicsPlant Reproductive Biology
R. Jalil、J. R. Nixon1990-01-01Journal of Microencapsulation
Poly (L-lactic acid) microcapsules were prepared using an emulsification and organic solvent evaporation technique (w/o system) with phenobarbitone as a reference core. Three polymers of different molecular weight (61,300; 43,200, 2400), were used to prepare different core loaded microcapsules. Microcapsule size incre…
Drug Solubulity and Delivery Systemsbiodegradable polymer synthesis and propertiesAdvanced Drug Delivery Systems