Shuang Liu、Li Wei Yang、Steven J. Rettig 等 4 位作者1993-06-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBulky ortho 3-methoxy groups on N4O3 amine phenol ligands producing six-coordinate bis(ligand)lanthanide complex cations [Ln(H3L)2]3+ (Ln = Pr, Gd; H3L = tris(((2-hydroxy-3-methoxybenzyl)amino)ethyl)amine)Shuang Liu, Li Wei Yang, Steven J. Rettig, and Chris OrvigCite this: I…
Metal-Organic Frameworks: Synthesis and ApplicationsMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Devendra Goyal、Chitra Agashe、B. R. Marathe 等 5 位作者1993-06-01Journal of Applied Physics
Antimony-doped tin oxide films were deposited by spray pyrolysis technique. The effect of antimony doping on structural and electrical properties was investigated in detail using the x-ray diffraction technique and room-temperature Hall measurements. Antimony doping did not affect the preferred growth along [200] to a…
ZnO doping and propertiesGas Sensing Nanomaterials and SensorsTransition Metal Oxide Nanomaterials
George G. Harrigan、Ateeque Ahmad、Nina J. Baj 等 6 位作者1993-06-01Journal of Natural Products
Bioassay-directed fractionation of the MeCOEt extract of Porella cordeana yielded drimenin [1] and aristolone [4], which were moderately toxic towards DNA-repair-deficient mutants of Saccharomyces cerevisiae. Three inactive sesquiterpenes, 7-ketoisodrimenin [2], 7-ketoisodrimenin-5-ene [3], and norpinguisanolide, were…
Polymer Synthesis and Characterization
M. S. Abd El Keriem、D. P. van der Werf、F. Pleiter1993-06-01Physical review. B, Condensed matter
The helium-decorated In-vacancy complex In${\mathit{V}}_{2}$${\mathrm{He}}_{\mathit{n}}$ in tungsten was studied with the aid of the perturbed-angular-correlation technique, using $^{111}\mathrm{In}$ as a probe. The release steps In${\mathit{V}}_{2}$${\mathrm{He}}_{\mathit{n}}$\ensuremath{\rightarrow}In${\mathit{V}}_{…
Fusion materials and technologiesNuclear Materials and PropertiesNuclear Physics and Applications
Joseph F. Bringley、B. A. Scott、S. J. La Placa 等 7 位作者1993-06-01Physical review. B, Condensed matter
The high-pressure synthesis and electric and magnetic properties of the ${\mathrm{LaCuO}}_{3\mathrm{\ensuremath{-}}\mathrm{\ensuremath{\delta}}}$ system have been studied. The copper valence can be varied in this oxygen-defect perovskite almost continuously from +3 to +2, and three distinct ordered phases are observed…
Physics of Superconductivity and MagnetismMagnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter Physics
M.-I Baraton、T. Merle、P. Quintard 等 4 位作者1993-06-01Langmuir
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface activity of a boron nitride powder: a vibrational studyM. I. Baraton, T. Merle, P. Quintard, and V. LorenzelliCite this: Langmuir 1993, 9, 6, 1486–1491Publication Date (Print):June 1, 1993Publication History Published online1 May 2002Published inissue 1 June 1993http…
Graphene research and applicationsThermal properties of materialsBoron and Carbon Nanomaterials Research
Philippe Marcus、Élie Protopopoff1993-06-01Journal of The Electrochemical Society
The principle of equilibrium potential‐pH diagrams for two‐dimensional species adsorbed on metals 3 is applied to the case of sulfur and oxygen adsorbed on nickel in water. Standard Gibbs energies of formation for sulfur and oxygen adsorbed on nickel are calculated from literature thermodynamic data for chemisorption…
Corrosion Behavior and InhibitionElectrochemical Analysis and Applications
Yu Xiangrong、Harald Hantsche1993-06-01Surface and Interface Analysis
Abstract Differential charging (DC) is a charging effect in x‐ray photoelectron spectroscopy (XPS or ESCA) that results from the spatial variation of sample potentials in the XPS sampling volume. It can be conceptually categorized into two different aspects—lateral (LDC) and vertical (VDC)—according to the difference…
Advancements in Photolithography TechniquesX-ray Spectroscopy and Fluorescence AnalysisElectron and X-Ray Spectroscopy Techniques
M. Ishaque Khan、Qin Chen、Håkon Hope 等 6 位作者1993-06-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydrothermal synthesis and characterization of hexavanadium polyoxo alkoxide anion clusters: crystal structures of the vanadium(IV) species Ba[V6O7(OH)3{(OCH2)3CCH3}3].3H2O and Na2[V6O7{(OCH2)3CCH2CH3}4], of the mixed-valence complex (Me3NH)[VIV5VVO7(OH)3{(OCH2)3CCH3}3], and…
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsVanadium and Halogenation Chemistry
George E. Christidis、A. C. Dunham1993-06-01Clay Minerals
Abstract The chemistry of smectites from some bentonite deposits derived from intermediate rocks has been examined by electron microprobe methods. A large variation in chemical composition within very short distances, principally controlled by a well-defined negative relationship between Si and A1, and between A1 VI a…
Geological and Geochemical AnalysisClay minerals and soil interactionsTherapeutic Uses of Natural Elements
Jacques Pécaut、Y. Le Fur、R. Masse1993-06-01Acta Crystallographica Section B Structural Science
The aim of studying the encapsulation of 2-amino-5-nitropyridinium cations in (HSO 4 - ) n and (H 2 AsO 4 - ) n polymeric host matrices is to build acentric frameworks that are efficient for quadratic nonlinear optical applications. Evidence is given for the role of inorganic polyanions in the formation of polar packi…
Crystal structures of chemical compoundsNonlinear Optical Materials ResearchSolid-state spectroscopy and crystallography
D. L. Bish、Cliff T. Johnston1993-06-01Clays and Clay Minerals
Abstract The full structure of dickite from St. Claire, Pennsylvania, including hydrogen atoms, was refined in space group Cc using time-of-flight neutron powder diffraction data obtained at 12 K and Rietveld refinement/difference-Fourier methods (R wp = 2.62%, reduced χ 2 = 1.915, 113 variables, a = 5.1474(6)Å, b = 8…
Crystal Structures and PropertiesAdvanced Condensed Matter PhysicsX-ray Diffraction in Crystallography
W. Pitschke、H. Hermann、N. Mattern1993-06-01Powder Diffraction
Measurements of X-ray diffraction patterns of high- T c superconductor and tungsten–carbide powder samples using a Bragg–Brentano diffractometer showed systematic variations of the intensities for different preparation conditions. For specimens with high surface roughness, an angle-dependent decrease of the intensitie…
Microstructure and Mechanical Properties of SteelsHigh-pressure geophysics and materialsX-ray Diffraction in Crystallography
I.V. Singh1993-06-01CORROSION
The thiourea group of sulfur compounds has important theoretical and practical applications. Thioureas have been studied extensively, but their inhibition mechanism is not fully understood. The effect of thiourea; allylthiourea; N,N´-diethylthiourea; N,N´-di-isopropylthiourea; phenylthiourea; thiocarbanilide; and symd…
Corrosion Behavior and InhibitionThermal and Kinetic AnalysisIndustrial Gas Emission Control
Azzedine Bousseksou、F. Varret、J. Nasser1993-06-01Journal de Physique I
We present a two-sublattice Ising-type model, involving one intramolecular interaction treated rigorously and intermolecular interactions treated in the mean-field approach, in order to describe the two-step transition exhibited by a bi-nuclear spin-crossover complex. Spontaneous symmetry breakings can be obtained acc…
Magnetism in coordination complexesOrganic and Molecular Conductors ResearchElectron Spin Resonance Studies
AA Bolzan、Celesta Fong、Brendan J. Kennedy 等 4 位作者1993-06-01Australian Journal of Chemistry
The powder neutron diffraction pattern of pyrolusite, ß-MnO2 [P42/mnm, No. 136, a = 4.4041(1), c = 2.8765(1)?], has been refined by the Rietveld method to give values for both the oxygen position parameter u=0.3046(1) and the anisotropic thermal parameters. The data confirm the MnO6 octahedra to be elongated with two…
Nuclear Physics and ApplicationsThermal and Kinetic AnalysisX-ray Diffraction in Crystallography
Sang Ihn Kang、Rama S. Ranganathan、John Emswiler 等 7 位作者1993-06-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, characterization, and crystal structure of the gadolinium(III) chelate of (1R,4R,7R)-.alpha.,.alpha.',.alpha.''-trimethyl-1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (DO3MA)Sang I. Kang, Rama S. Ranganathan, John E. Emswiler, Krishan Kumar, Jack Z. Gougout…
Crystal structures of chemical compoundsMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Isamu Yasuda、Tomoji Hikita1993-06-01Journal of The Electrochemical Society
Electrical conductivity of calcium‐doped lanthanum chromites, , was determined as a function of composition, temperature, and oxygen partial pressure, , to determine its defect structure and understand its redox behavior. The conductivity was independent of and was proportional to the dopant concentration at high . Th…
Advancements in Solid Oxide Fuel CellsGlass properties and applicationsNuclear materials and radiation effects
Douglas G. Johnson、Mark P. Niemczyk、David W. Minsek 等 7 位作者1993-06-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemical electron transfer in chlorophyll-porphyrin-quinone triads: the role of the porphyrin-bridging moleculeDouglas G. Johnson, Mark P. Niemczyk, David W. Minsek, Gary P. Wiederrecht, Walter A. Svec, George L. Gaines III, and Michael R. WasielewskiCite this: J. Am. C…
Photosynthetic Processes and MechanismsPorphyrin and Phthalocyanine ChemistryPhotochemistry and Electron Transfer Studies
R. J. Ward、H.A. Willis、Graeme A. George 等 7 位作者1993-06-01Textile Research Journal
The surface of untreated wool has been investigated using x-ray photoelectron spec troscopy (XPS) and static secondary ion mass spectrometry (SSIMS). The wool surface is covered in a thin layer of lipid estimated to be approximately 0.9 nm thick. Mass spectral peaks are consistent with the presence in the lipid layer…
X-ray Spectroscopy and Fluorescence AnalysisElectron and X-Ray Spectroscopy TechniquesIon-surface interactions and analysis