Uk Lee、Yukiyoshi Sasaki1994-01-01Bulletin of the Korean Chemical Society
have been synthesized and their molecular structures have been also determined by single-crystal X-ray diffraction technique. The space groups, unit cell parameters, and R factors are as follows: Compound A, monoclinic, , a= 19.074 (3), b=21.490 (3), c=15.183 (2) =109.67 (1) ; z=8; R=0.075($IF_0I>4{\sigma}(IF_0I);$ Co…
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsNanomaterials for catalytic reactions
David Jiles、Lasse Suominen1994-01-01IEEE Transactions on Magnetics
The detection of surface stress in materials is becoming increasingly important in failure analysis. In the case of ferromagnetic steels, the Barkhausen effect provides a practical tool for surface stress evaluation. However, one of the drawbacks of the method has been the lack of an underlying model theory for use in…
Magnetic properties of thin filmsMicrostructure and Mechanical Properties of SteelsMagnetic Properties and Applications
Young Ho Kim1994-01-01Macromolecular Symposia
Abstract Highly branched polyphenylenes, polyphenylene ethers, aromatic polyesters and polyamides synthesized from AB 2 type monomers are reviewed. Polyphenylenes were obtained by aryl‐aryl coupling reactions of 3,5‐dihalo‐phenyl organometallic reagents. 13 C NMR indicates about 70% branching efficiency. A T g at 236°…
Chemical Synthesis and AnalysisSynthetic Organic Chemistry MethodsDendrimers and Hyperbranched Polymers
I. Hubert Joe、G. Aruldhas、S. Anbukumar 等 4 位作者1994-01-01Crystal Research and Technology
Abstract Infrared and single crystal Raman spectra for various polarization geometries of Triglycine Sulpho‐Phosphate (TGSP) have been recorded and analysed. The bonds of hydrogen atoms in H 2 SO 4 and H 3 PO 4 groups are shown to be weak and the possibility of proton transfer from H 2 SO 4 /H 3 PO 4 group is indicate…
Nonlinear Optical Materials ResearchSolid-state spectroscopy and crystallographyMolecular spectroscopy and chirality
Tooru Imokawa、Ryutaro Fujisawa、Arata SUDA 等 4 位作者1994-01-01Corrosion engineering digest
The photoelectrochemical behavior of 304 stainless steel coated with TiO2 by sputtering was studied in NaCl solutions at ambient temperature. It was confirmed that the coating from 30 to 100nm thick could protect 304 stainless steel cathodically under illumination. The coating defects don't hinder the protection perfo…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsConcrete Corrosion and Durability
Richard W. Wagner、Jonathan S. Lindsey、Ilona Turowska‐Tyrk 等 4 位作者1994-01-01Tetrahedron
Synthetic models of the photosynthetic antenna complexes must achieve long-range 3-dimensional order encompassing a large number of porphyrinic pigments with limited direct contact of the pigments. In order to develop solid-state antenna complexes, we have synthesized porphyrins bearing benzyloxy groups projecting ove…
Porphyrin and Phthalocyanine ChemistryLuminescence and Fluorescent MaterialsPorphyrin Metabolism and Disorders
H.R. Van Der Wal1994-01-01Journal of Reinforced Plastics and Composites
The majority of polyurethanes are crosslinked thermoset polymers, which cannot be recycled by melting and extrusion processes without excessive degradation. Sev eral recycling techniques for polyurethanes have been described in technical and scientific literature and are used industrially, such as rebonding of flexibl…
Polymer composites and self-healingCarbon dioxide utilization in catalysisPolymer Foaming and Composites
Weiliang Wu、Hiroyuki Hamada、Zenichiro MAEKAWA1994-01-01Journal of the Textile Institute
A new method for predicting the deformation behaviour and the related mechanical properties of weft-knitted fabrics is presented. A two-dimensional hexagonal mechanical model is derived, which is based on the geometrical structure of plain-stitch fabric. An analytical method of converting the experimental data of the…
Mechanical Behavior of CompositesDyeing and Modifying Textile FibersTextile materials and evaluations
B. G. Ateya、Elsayed A. Ashour、S.M. Sayed1994-01-01CORROSION
α-Aluminum bronze (Copper [Cu]-7% Al) (UNS C61400) was found to be susceptible to stress corrosion cracking (SCC) in 3.4% NaCl under relatively high anodic potentials (≥ 300 mVNHE), i.e., greater than 200 mV more positive than the free-corrosion potential. The time to failure and stress ratio (σ soln/σ air) were mildl…
Intermetallics and Advanced Alloy PropertiesAdvanced materials and compositesMetallurgical and Alloy Processes
Yan Xiao、G.R. Slemon、Mohammad Reza Iravani1994-01-01IEEE Transactions on Energy Conversion
This paper elaborates on a new approach introduced in an earlier paper for the steady-state and transient analysis of synchronous machines and demonstrates the validity and accuracy of this model for system studies. The approach is based on developing an equivalent flux linkage circuit model from the dimensions and ma…
Electric Motor Design and AnalysisMagnetic Properties and ApplicationsMagnetic Field Sensors Techniques
Sarah J. Angus‐Dunne、Robert C. Burns、Donald C. Craig 等 4 位作者1994-01-01Journal of the Chemical Society Chemical Communications
The first well-characterised example of a heteropolymetalate involving palladium, [Pd2W10O36]8–, contains two W5O186–‘ligands’, each bridging between two four-coordinate palladium(II) ions in square-planar environments, defined by an X-ray crystal structure analysis.
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsNanocluster Synthesis and Applications
Yeong‐Soon Gal1994-01-01Journal of the Chemical Society Chemical Communications
A novel conjugated polyelectrolyte, poly(propynyltriphenylphosphonium bromide) has been synthesised using transition metal catalysts in quantitative yield.
Fuel Cells and Related MaterialsCatalytic Cross-Coupling ReactionsDendrimers and Hyperbranched Polymers
Kenji Mizuguchi、Akinori Kidera、Nobuhiro Gō1994-01-01Proteins Structure Function and Bioinformatics
We have developed theoretical models for analysis of X-ray diffuse scattering from protein crystals. A series of models are proposed to be used for experimental data with different degrees of precision. First, we propose the normal mode model, where conformational dynamics of a protein is assumed to occur mostly in a…
Protein Structure and DynamicsEnzyme Structure and FunctionX-ray Spectroscopy and Fluorescence Analysis
Lars Wadsö1994-01-01Wood and Fiber Science (Society of Wood Science and Technology)
This paper concerns transient sorption measurements in two intervals (54 to 75% and 75 to 84% relative humidity) made on samples of pine, spruce, ash, aspen, cherry, and willow, with the flow in different directions.In the lower interval, the sorption behavior is quite Fickian; but in the higher interval, it is largel…
Wood Treatment and PropertiesTextile materials and evaluationsMaterial Properties and Processing
E.S. Thomas、John G. Thompson、Ray L. Withers 等 6 位作者1994-01-01Journal of the American Ceramic Society
Chemical stabilization of β‐cristobalite has been achieved using two methods: (1) incorporating “stuffing” cations Na, Ca, Cu, and Sr into the cavities in the tectosilicate framework, as previously reported, and (2) without “stuffing” cations, by substituting AlPO 4 into the framework. XRD, TEM, FTIR, DSC, and solid‐s…
Zeolite Catalysis and SynthesisGlass properties and applicationsClay minerals and soil interactions
Timothy J. McCarthy、Mercouri G. Kanatzidis1994-01-01Journal of the Chemical Society Chemical Communications
The layered compounds, KMP2Se6(M = Sb, Bi), have been prepared by the reaction of Bi(Sb) with a molten alkali-metal polyselenophosphate flux.
Rare-earth and actinide compoundsCrystal Structures and PropertiesInorganic Chemistry and Materials
Xindong Wang、Vladimir Antropov、B. N. Harmon1994-01-01IEEE Transactions on Magnetics
Within the local spin density approximation (LSDA) of density functional theory, calculations of both the diagonal and off-diagonal conductivity of NiMnSb and PtMnSb are presented. The similar electronic structures of these two materials yield similar diagonal conductivities while the larger spin-orbit coupling of Pt…
Advanced Thermoelectric Materials and DevicesChalcogenide Semiconductor Thin FilmsHeusler alloys: electronic and magnetic properties
Zuo-G. Ye、O. Crottaz、F. Vaudano 等 6 位作者1994-01-01Ferroelectrics
With a view to studying the optical, structural and magnetoelectric properties, single crystals of the hausmannite CuCr2O4 have been grown by a high temperature solution method, based on the thermal decomposition of K2Cr2O7 in the presence of CuO. X-ray powder refinements at room temperature indicate that the crystal…
Multiferroics and related materialsCrystal Structures and PropertiesAdvanced Condensed Matter Physics
John R. Meyer1994-01-01Phytopathology
Soils suppressive to Thielaviopsis basicola typically have low pH values and high levels of exchangeable aluminum (Al). A series of experiments was conducted to determine the sensitivity of T. basicola to Al. All experiments were conducted in Al-amended carrot agar medium buffered at pH 5.0, except for experiments to…
Soil Carbon and Nitrogen DynamicsClay minerals and soil interactionsAgriculture, Soil, Plant Science
Mohammad A. S. Masoum、E.F. Fuchs1994-01-01IEEE Transactions on Power Delivery
The problem of modifying the harmonic power flow analysis to permit the inclusion of nonlinear anisotropic transformers and computation of their iron-core (and copper) losses are discussed. The nonlinear model used for transformers is capable of simulating saturation of iron-cores, anisotropy of laminations, and the i…
Power Quality and HarmonicsMagnetic Properties and ApplicationsHigh-Voltage Power Transmission Systems