Brenda M. Furphy、J.M. Harrowfield、Mark I. Ogden 等 6 位作者1989-01-01Journal of the Chemical Society Dalton Transactions
Reaction of europium(III) with p-t-butylcalix[4]arene (H4L) under the same conditions as used for reactions with larger calixarenes yields a yellow crystalline complex structurally characterised as [Eu2(HL)2(dmf)4].7dmf, where dmf =N,N-dimethylformamide. The crystals are monoclinic, space group C2/c with a= 35.03(2),…
Organometallic Complex Synthesis and CatalysisRadioactive element chemistry and processingLanthanide and Transition Metal Complexes
Kenneth S. Suslick、Dominick J. Casadonte、Stephen J. Doktycz1989-01-01Chemistry of Materials
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUltrasonic irradiation of copper powderKenneth S. Suslick, Dominick J. Casadonte, and Stephen J. DoktyczCite this: Chem. Mater. 1989, 1, 1, 6–8Publication Date (Print):January 1, 1989Publication History Published online1 May 2002Published inissue 1 January 1989https://pubs.a…
Ultrasound and Cavitation PhenomenaMaterial Properties and Applications
Michel Pigeon、Patrick Plante、Michel Pigeon 等 5 位作者1989-01-01ACI Materials Journal
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Concrete Corrosion and DurabilityGeotechnical Engineering and Underground StructuresEngineering and Material Science Research
K. L. Chrzan、Z. Pohl、T. Kowalak1989-01-01IEEE Transactions on Electrical Insulation
The mechanisms of moisture absorption by an insulator surface contaminated with different salts is described. A list of some salts depending on their hygroscopicity is given. Measurements of surface conductivity and leakage current on flat insulator models at different relative humidities and with different types of s…
High voltage insulation and dielectric phenomenaLightning and Electromagnetic PhenomenaPower Transformer Diagnostics and Insulation
Mary A. Krenceski、Julian F. Johnson1989-01-01Polymer Engineering and Science
Abstract The effect of polymeric molecular weight and molecular weight distribution on pressure‐sensitive adhesive performance was studied in a model system of commercial polyisobutylenes. Molecular weight was characterized by size exclusion chromatography and membrane osmometry. Pressure sensitive adhesive performanc…
Polymer crystallization and propertiesRheology and Fluid Dynamics StudiesMaterial Properties and Processing
N. Karl1989-01-01Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics
First, a brief overview is given on literature dealing with purification, purity assessment, and crystal growth methods which are applicable to organic photoconductors and semiconductors under the aspect of the required high purity. Then some recent examples are presented of purification, material handling and crystal…
Nonlinear Optical Materials ResearchPhase-change materials and chalcogenidesOrganic and Molecular Conductors Research
Osamu Terasaki、John Meurig Thomas、G. Robert Millward 等 4 位作者1989-01-01Chemistry of Materials
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRole of high-resolution electron microscopy in the identification and characterization of new crystalline, microporous materials: "reading off" the structure and symmetry elements of pentasil molecular sievesOsamu Terasaki, John M. Thomas, G. Robert Millward, and D. Watanabe…
Zeolite Catalysis and SynthesisRadioactive element chemistry and processingX-ray Diffraction in Crystallography
S. Zahir、M. A. Chaudhari、Jinn‐Shing King1989-01-01Makromolekulare Chemie Macromolecular Symposia
Abstract A novel high temperature thermosetting resin system based on the addition polymerization of bis (4‐maleimidophenyl)methane and o, o′‐diallyl‐bisphenol A is presented in this paper. This system offers the combination of easy solventless processing and the high temperature and toughness performance characterist…
Epoxy Resin Curing ProcessesSynthesis and properties of polymersPhotopolymerization techniques and applications
Clément Sire、Rémy Mosseri1989-01-01Journal de physique
A tight binding model on the general 1D quasiperiodic chain is studied in the framework of perturbation theory, near the corresponding periodic chain, using a new set of coordinates. The main gaps are well described, whereas the very small ones are correctly given, only for a very small perturbation. For a given irrat…
Quasicrystal Structures and Properties
M. Fazelian、Chao Wu、Tao Cheng 等 5 位作者1989-01-01IEEE Transactions on Electrical Insulation
The results of flashover tests on insulator models with various geometrical configurations under DC field are presented. Dimensional parameters are used to describe the influence of the insulator profile on the flashover performance. The effects of both the surface contamination level and the geometrical shape on the…
High voltage insulation and dielectric phenomenaLightning and Electromagnetic PhenomenaHigh-Voltage Power Transmission Systems
Tadashi Maki、Seiichi Furutani、Imao Tamura1989-01-01ISIJ International
Behavior of martensitic transformation and shape memory effect in an Fe–31%Ni–10%Co–3% alloy were studied. The specimen which was ausaged at 873 K for 3.6 ks produces a thin plate martensite (Ms=193 K) with a large thermal hysteresis (i.e., As – Ms=150 K, Af – Ms=315 K). Despite the large thermal hysteresis, the forwa…
Microstructure and Mechanical Properties of SteelsShape Memory Alloy TransformationsMagnetic Properties and Applications
J. Xuan、I. T. Hong、E. C. Fitch1989-01-01Journal of Tribology
Under fluid film lubrication, the particulate contaminants in the fluid cause three-body abrasive wear on critical surfaces. The wear not only depends on the hardness of the wearing surface (Hj), but also on the hardnesses of its opposing surface (Hb) and the involved abrasives (Ha). In this paper, the hardness effect…
Tribology and Lubrication EngineeringTribology and Wear AnalysisMetal Alloys Wear and Properties
Benigno C. Valdez、Brent A. French、Ezzat S. Younathan 等 4 位作者1989-01-01Journal of Biological Chemistry
Arg252 of fructose-6-phosphate 1-kinase (PFK) from Bacillus stearothermophilus has been proposed to be involved in the binding of the substrate Fru-6-P. We demonstrate here that mutation of this residue to alanine converts the enzyme to a form with characteristics similar to those of its allosterically tight form. The…
Enzyme Structure and FunctionMetabolism, Diabetes, and CancerHemoglobin structure and function
B. Velde、J. Espitalié1989-01-01Journal of Petroleum Geology
Kerogen maturation, estimated from pyrolysis Tmax values is compared with the smectite laayer‐content of the illite/smcetite mineral derived from sediments in six suites from different basins with different ranges of statographic age. The most significant correlations are made when camparing Tmax and estimated percent…
Geology and Paleoclimatology ResearchPaleontology and Stratigraphy of FossilsClay minerals and soil interactions
R.G. Cuddihy、Gregory L. Finch、G.J. Newton 等 7 位作者1989-01-01Environmental Science & Technology
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacteristics of radioactive particles released from the Chernobyl nuclear reactorRichard G. Cuddihy, G. L. Finch, G. J. Newton, F. F. Hahn, J. A. Mewhinney, S. J. Rothenberg, and D. A. PowersCite this: Environ. Sci. Technol. 1989, 23, 1, 89–95Publication Date (Print):Janu…
Radioactive contamination and transferGraphite, nuclear technology, radiation studiesNuclear and radioactivity studies
Claude Binet、Ahmed Jadi、J.C. Lavalley1989-01-01Journal de Chimie Physique
La molécule sonde CO est utilisée pour évaluer l’importance relative des faces (100) et (111) ainsi que des discontinuités pour des catalyseurs 0,45 % Pd/Al2O3 de dispersion comprise entre 9 % et 51 %. Le coefficient molaire d’extinction intégré de la vibration v(CO) est mesuré pour un environnement intermoléculaire s…
Catalytic Processes in Materials ScienceMesoporous Materials and CatalysisCatalysis and Oxidation Reactions
CM Eucken、PT Finden、S Trapp-Pritsching 等 4 位作者1989-01-01OpenAlex
The influence of the composition of Zircaloy-type alloys has been evaluated previously with respect to mechanical properties (1973 International Conference Zirconium in the Nuclear Industry, ASTM STP 551) and to nodular corrosion (1985 International ASTM Conference on Zirconium in the Nuclear Industry, ASTM STP 939).…
Fusion materials and technologiesNuclear reactor physics and engineeringNuclear Materials and Properties
David Jiles1989-01-01IEEE Transactions on Magnetics
The author presents the results of measurements of the effect of uniaxial tensile stresses of up to 85 MPa on Barkhausen activity and magnetic properties of AISI 4130 and AISI 4140 steels. The results show that maximum Barkhausen activity occurred very close to the coercive point. The Barkhausen peak height and the to…
Microstructure and Mechanical Properties of SteelsMagnetic Properties and ApplicationsNon-Destructive Testing Techniques
Pavel Krejčı́1989-01-01Applications of Mathematics
Energy functionals for the Preisach hysteresis operator are used for proving the existence of weak periodic solutions of the one-dimensional systems of Maxwell equations with hysteresis for not too large right-hand sides. The upper bound for the speed of propagation of waves is independent of the hysteresis operator.
Force Microscopy Techniques and ApplicationsMagnetic Properties and ApplicationsPiezoelectric Actuators and Control
John J. Lee、Marie E. McEnery、B. ter Kuile 等 9 位作者1989-01-01Micropaleontology
John J. Lee, M. E. McEnery, B. Ter Kuile, J. Erez, , R. F. Rockwell, W. W. Faber Jr., A. Lagziel, Identification and Distribution of Endosymbiotic Diatoms in Larger Foraminifera, Micropaleontology, Vol. 35, No. 4 (1989), pp. 353-366
Marine Biology and Ecology ResearchDiatoms and Algae ResearchCephalopods and Marine Biology