Carlos J. Gómez‐García、Eugenio Coronado、Pedro Gómez‐Romero 等 4 位作者1993-01-01Inorganic Chemistry
We report the structural and magnetic characterization of the crystalline product obtained from a solution containing Δ-(PW9O34)9- and Cu2+ ions (molar ratio 1/2) after standing a long period of time at room temperature. Three complementary techniques were used: X-ray diffraction, magnetic susceptibility measurements,…
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsNanocluster Synthesis and Applications
Keith J. Bowman、I‐Wei Chen1993-01-01Journal of the American Ceramic Society
The large shear component of the tetragonal‐to‐monoclinic transformation in zirconia causes a stress‐induced preferred orientation of the tetragonal and monoclinic variants. The resultant texture, which is dependent on the loading condition, has been analyzed in terms of stress assistance to transformation and experim…
Advanced ceramic materials synthesisMicrostructure and mechanical propertiesAdvanced materials and composites
Andrew J. Swift、Alan J. Paul、John C. Vickerman1993-01-01Surface and Interface Analysis
Abstract X‐ray photoelectron spectroscopy (XPS), time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS) and infrared spectroscopy (IR) have been used to study the interaction of two corrosion inhibitor blends of unknown composition with an iron surface. The analysis has precisely identified quaternary ammonium and…
Corrosion Behavior and InhibitionElectron and X-Ray Spectroscopy TechniquesIon-surface interactions and analysis
Hiroaki Misawa、Keiji Sasaki、Masanori Koshioka 等 5 位作者1993-01-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLaser manipulation and assembling of polymer latex particles in solutionHiroaki Misawa, Keiji Sasaki, Masanori Koshioka, Noboru Kitamura, and Hiroshi MasuharaCite this: Macromolecules 1993, 26, 2, 282–286Publication Date (Print):January 1, 1993Publication History Published o…
Diatoms and Algae Research
A. Vourdas1993-01-01Physica Scripta
Phase states are defined as eigenkets of the "exponential of the phase" operator E − . It is shown that they are SU(1, 1) Perelomov coherent states corresponding to the k = ½ representation. The properties of these states are discussed and used for the calculation of the phase distribution of coherent, squeezed and ph…
Quantum optics and atomic interactionsSolid-state spectroscopy and crystallographyOptical and Acousto-Optic Technologies
Andreas Schönhals、E. Schlosser1993-01-01Physica Scripta
Broadband dielectric spectroscopy in the frequency range from 10 −5 Hz to 10 6 Hz is employed to study the relation between α-relaxation and normal mode process for oligomeric polyisoprene and polypropylene glycol samples of different molecular weight. It is shown that relaxation time of the α-relaxation has a much st…
Polymer crystallization and propertiesMaterial Dynamics and PropertiesRheology and Fluid Dynamics Studies
K Furumura、Yasuo Murakami、T Abe1993-01-01OpenAlex
Nearly ten years have passed since the LF-RH-CC process was adopted in the production of bearing steels. This process has become a common system for steelmakers, regardless of using EFs or BOFs as melting furnaces. The current cleanliness level of bearing steels shows a remarkable improvement when compared to that of…
Gear and Bearing Dynamics AnalysisTribology and Lubrication EngineeringMetal Alloys Wear and Properties
Michael Cavaluzzo、Qin Chen、Jon Zubieta1993-01-01Journal of the Chemical Society Chemical Communications
The reaction of (Et4N)2MnCl4 with MeC(CH2OH)3 in acetonitrile in the presence of atmospheric oxygen yields the oxoalkoxomanganese cluster (Et4N)2[Mn10O2Cl8{(OCH2)3CMe}6]·4MeOH·2H2O, a MnII,III mixed valence species exhibiting the decametallate core geometry, {M10O2L26}.
Metal-Organic Frameworks: Synthesis and ApplicationsMagnetism in coordination complexesPolyoxometalates: Synthesis and Applications
R. B. Ramgulam、J. Amirbayat、I. Porat1993-01-01Journal of the Textile Institute
The paper describes the method of using a laser sensor for the measurement of surface roughness and compares the results with those obtained by conventional contact methods. It goes further to study the anisotropy of roughness in ten plain woven fabrics.
Textile materials and evaluationsIndustrial Vision Systems and Defect DetectionSurface Roughness and Optical Measurements
Naomi E. Chayen、Jonathan Radcliffe、D. M. Blow1993-01-01Protein Science
This work investigates the influence of storage of lysozyme in solution on its crystallization. The crystallization of hen egg-white lysozyme exhibits a storage effect (aging) that depends on the length of time the lysozyme solution is stored, after dissolving from freeze-dried powder, before being brought to crystall…
Proteins in Food SystemsEnzyme Structure and FunctionCrystallization and Solubility Studies
Shigehiko Iwai、Mineyuki Hattori、Daiyû Nakamura 等 4 位作者1993-01-01Journal of the Chemical Society Faraday Transactions
1 H NMR, electrical conductivity and thermal measurements have been performed on the rotator phase of n-alkylammonium chlorides CnH2n+1 NH3Cl (n= 6–10). Rapid two-dimensional self-diffusion and uniaxial rotation of the long rod-like cations were observed in all salts studied by measuring 1H NMR spin–lattice relaxation…
Liquid Crystal Research AdvancementsMaterial Dynamics and PropertiesSolid-state spectroscopy and crystallography
Mohini Sain、B. V. Kokta、D. Maldas1993-01-01Journal of Adhesion Science and Technology
The role of boron compounds on the flame retardance characteristics of unmodified as well as surface-modified wood fiber-filled polypropylene composites is discussed. The effect of three different additives, m-phenylene bismaleimide (BMI), BMI-modified polypropylene (BPP), and a mixture of borax and boric acid, on the…
Polymer Nanocomposites and PropertiesNatural Fiber Reinforced CompositesFlame retardant materials and properties
Pik‐Yin Lai1993-01-01The Journal of Chemical Physics
By introducing a head-group energy of adsorption with the grafting surface, we simulate the grafted polymer layer including chain exchange with the bulk solution using the bond-fluctuation model. The kinetics of adsorption is relatively rapid in short times and becomes much slower in later time as the layer is formed.…
Surface Modification and SuperhydrophobicityPolymer Surface Interaction StudiesMolecular Junctions and Nanostructures
Rajiv M. Ginde、Allan S. Myerson1993-01-01Journal of Crystal Growth
Previous measurements of concentration gradients formed in long columns of supersaturated glycine solutions [1] indicate that small amounts of impurities, such as valine, can lead to an increase in the magnitude of the gradient. This might indicate that the impurity enhances the degree of cluster formation. The concen…
Spectroscopy and Quantum Chemical StudiesCrystallization and Solubility Studiesnanoparticles nucleation surface interactions
Robert Mokaya、William Jones、Mary E. Davies 等 4 位作者1993-01-01Journal of Materials Chemistry
Acid-activated clays (montmorillonites) have been cation-exchanged with aluminium chloride pentahydroxide dihydrate (aluminium chlorhydrate, ACH) solutions of different concentrations to yield expanded materials. Various Al:clay (a/c) ratios have been used. The effect of changing the degree of polymerisation of the pi…
Mesoporous Materials and CatalysisClay minerals and soil interactionsLayered Double Hydroxides Synthesis and Applications
S. Srinivasa Murthy、Gangasharan、Santanu Kumar Nayak1993-01-01Journal of the Chemical Society Faraday Transactions
The glass-forming tendency of a large number of organic liquids of varying molecular shapes has been examined using differential scanning calorimetry (DSC) and a sharp distinction between spherical and non-spherical molecular liquids as regards their glass-forming efficiency is observed. Calorimetric evidence has been…
Material Dynamics and PropertiesGlass properties and applicationsPhase-change materials and chalcogenides
R. Roesky、A. Meerschaut、J. Rouxel 等 4 位作者1993-01-01Zeitschrift für anorganische und allgemeine Chemie
Abstract The new misfit layer compound (LaSe) 1.14 (NbSe 2 ) 2 has been synthesized from the elements at 1050‐ and its structure has been determined by a composite approach. The structure has an alternating stacking sequence of [LaSe] and two [NbSe 2 ] layers along the c direction. The misfit of the two different laye…
Rare-earth and actinide compoundsIron-based superconductors researchInorganic Chemistry and Materials
Toshihiro Ando、Junzo Tanaka、Motohiko Ishii 等 7 位作者1993-01-01Journal of the Chemical Society Faraday Transactions
Species chemisorbed on diamond surfaces, which had been treated under CF4-plasma conditions, have been investigated by diffuse reflectance Fourier-transform infrared spectroscopy. Both oxidized and hydrogenated diamond surfaces were fluorinated at temperatures in the range 300–1000 °C. The C—F bond was observed on the…
Metal and Thin Film MechanicsDiamond and Carbon-based Materials ResearchPlasma Diagnostics and Applications
Luis Javier Álvarez、Javier Fdez. Sanz、M. J. Capitán 等 5 位作者1993-01-01Journal of the Chemical Society Faraday Transactions
Molecular dynamics simulations for γ-Al2O3 and La3+-doped γ-Al2O3 crystals have been performed. From bulk simulations a description of the crystal-terminating layers in both doped and pure alumina solids is reported. The molecular dynamics simulations allow us to describe systematically for the first time the surface…
Advanced ceramic materials synthesisGlass properties and applicationsX-ray Diffraction in Crystallography
C. Morterra、Giuliana Magnacca、G. Cerrato 等 6 位作者1993-01-01Journal of the Chemical Society Faraday Transactions
Three alumina preparations, doped with ca. 3% CaO and corresponding to the γ-, δ,θ- and α-Al2O3 phases, respectively, have been studied by XRD, TEM and FTIR spectroscopy. Owing to the presence of Ca, no bulk phase stabilization/destabilization effects were observed, but the particle morphology of the γ- and α-phases w…
Advanced ceramic materials synthesisMicrowave Dielectric Ceramics SynthesisMagnesium Oxide Properties and Applications