Peter S. Brzović、Elizabeth L. Holbrook、Ronald C. Greene 等 4 位作者1990-01-01Biochemistry
Cystathionine gamma-synthase catalyzes a pyridoxal phosphate dependent synthesis of cystathionine from O-succinyl-L-homoserine (OSHS) and L-cysteine via a gamma-replacement reaction. In the absence of L-cysteine, OSHS undergoes an enzyme-catalyzed, gamma-elimination reaction to form succinate, alpha-ketobutyrate, and…
Folate and B Vitamins ResearchEnzyme Structure and FunctionBiochemical and Molecular Research
Hubert Lobo、Claude Cohen1990-01-01Polymer Engineering and Science
Abstract An apparatus has been developed for the measurement of thermal conductivity of polymer melts. Based on the transient “line source method,” it is ideally suited to these materials because measurements can be made quickly, before the onset of thermal degradation. Also, little or no sample preparation is require…
High voltage insulation and dielectric phenomenaThermal properties of materialsThermography and Photoacoustic Techniques
Chan‐Gyu Lee、Yoshiaki Iijima、Tatsuhiko Hiratani 等 4 位作者1990-01-01Materials Transactions JIM
Tracer diffusion coefficient of 51Cr in α-iron has been determined by a serial radio-frequency sputter-microsectioning method in the temperature range 885 to 1174 K. In α-iron of the paramagnetic state from the Curie temperature to the α-γ transformation temperature the diffusion coefficient of chromium shows a linear…
Fusion materials and technologiesNuclear Materials and PropertiesThermodynamic and Structural Properties of Metals and Alloys
啓司 上野、幸一朗 斉木、篤 小間1990-01-01Institutional Repositories DataBase (IRDB)
We have grown ultrathin films of layered transition metal dichalcogenides (MoSez,NbSe z ) heteroepitaxially on cleaved faces of mica (muscovite).This is the first success in the heteroepitaxial growth between highly heterogeneous layered materials having different crystal structures and lattice constants that differ b…
2D Materials and ApplicationsChalcogenide Semiconductor Thin FilmsCrystal Structures and Properties
Peter G. Pickup1990-01-01Journal of the Chemical Society Faraday Transactions
The ac impedance of poly-[1-methyl-3-(pyrrol-1-ylmethyl)pyridinium]+(poly-MPMP+) as a function of potential has been investigated in acetonitrile solutions. When the polymer is reduced it acts merely as a barrier to the migration of ions to the double layer of the underlying electrode. Thus the ionic conductivity of t…
Electrochemical sensors and biosensorsConducting polymers and applicationsElectrochemical Analysis and Applications
Stephen J. Lombardi、David L. Kaplan1990-01-01Biodiversity Heritage Library (Smithsonian Institution)
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Silk-based biomaterials and applicationsInsect Utilization and EffectsSilkworms and Sericulture Research
T. A. Ramanarayanan、S.N. Smith1990-01-01CORROSION
The corrosion of alloy 4130 (UNS(1) G41300) steel has been investigated at temperatures up to 400°F in gaseous environments containing varying amounts of H2S and CO2 and in gas-saturated aqueous environments having dissolved chlorides. Thermogravimetric techniques have been used for establishing the kinetics of corros…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsMaterial Properties and Failure Mechanisms
William L. Mankins、Stephen Lamb1990-01-01ASM International eBooks
Abstract Nickel in elemental form or alloyed with other metals and materials has made significant contributions to our present-day society and promises to continue to supply materials for a demanding future. This article provides a historical overview and physical metallurgy of nickel and nickel alloys. It lists and d…
Material Properties and Applications
S. Washko、G. N. Aggen1990-01-01ASM International eBooks
Abstract This article discusses the composition, characteristics, and properties of the five groups of wrought stainless steels: martensitic stainless steels, ferritic stainless steels, austenitic stainless steels, duplex stainless steels, and precipitation-hardening stainless steels. The selection of stainless steels…
Microstructure and Mechanical Properties of SteelsFatigue and fracture mechanicsHydrogen embrittlement and corrosion behaviors in metals
Thierry Ondarçuhu、Pascale Fabre、Élie Raphaël 等 4 位作者1990-01-01Journal de physique
We present a theoretical and experimental study of amphiphilic particles : these are small solid spheres treated so that one part of the solid is hydrophilic whereas the other is hydrophobic. These beads have a specific behaviour at the interface between two fluids of different polarities since they are anchored at th…
Enhanced Oil Recovery TechniquesSurfactants and Colloidal SystemsPickering emulsions and particle stabilization
Kazuhiko Seki、Hiroshi Tanaka、Toshiaki Ohta 等 8 位作者1990-01-01Physica Scripta
Electronic structure of poly(tetrafluoroethylene) studied by UPS, VUV absorption, and band calculations, Kazuhiko Seki, Hiroshi Tanaka, Toshiaki Ohta, Yuriko Aoki, Akira Imamura, Hitoshi Fujimoto, Hiromichi Yamamoto, Hiroo Inokuchi
Metal and Thin Film MechanicsDiamond and Carbon-based Materials ResearchPolymer Nanocomposite Synthesis and Irradiation
W.J. Sarjeant1990-01-01IEEE Transactions on Electrical Insulation
A review of capacitor fundamentals and technology that is intended for the clarification of the modes of operation of the broad spectrum of capacitors, including paper/polymeric films, electrolytics, and ceramics, is presented. How each class of capacitor performs in both low- and high-power electronics is discussed i…
High voltage insulation and dielectric phenomenaElectrostatic Discharge in ElectronicsMagnetic Field Sensors Techniques
E. Della Torre、J.O. Oti、György Kádár1990-01-01IEEE Transactions on Magnetics
Methods of dealing with reversible magnetization in the context of Preisach modeling are examined. A generalization of the vector product model which includes reversible effects, as well as the usual irreversible effects, is presented.>
Magnetic properties of thin filmsMagnetic Properties and ApplicationsMagnetic Properties of Alloys
Mariangela Angaroni、G. Attilio Ardizzoia、Tiziana Beringhelli 等 7 位作者1990-01-01Journal of the Chemical Society Dalton Transactions
The trinuclear copper(II) complexes [Cu3(OH)(pz)3(Hpz)2Cl2]·solv (Hpz = pyrazole, pz = pyrazolate anion, solv = H2O or tetrahydrofuran) have been obtained by oxidation reactions of [{Cu(Hpz)2Cl}2]. When treated with pyridine(py), both CuII derivatives gave the related compound [Cu3(OH)(pz)3-(py)2Cl2]·py, which has bee…
Metal complexes synthesis and propertiesMagnetism in coordination complexesMetal-Catalyzed Oxygenation Mechanisms
L.E. Lundgaard、M. Runde、B. Skyberg1990-01-01IEEE Transactions on Power Delivery
Loose particles and discharges inside the ducts of a gas-insulated substation (GIS) are considered hazardous to the insulation system. These irregularities or flaws can be detected by using acoustic sensors placed on the enclosure. An elementary review of sound propagation in a GIS together with corresponding experime…
High voltage insulation and dielectric phenomenaUltrasonics and Acoustic Wave PropagationNon-Destructive Testing Techniques
Hansjoachim Matzke1990-01-01Journal of the Chemical Society Faraday Transactions
A critical review is given on self-diffusion, impurity diffusion, chemical diffusion, thermal diffusion and radiation-enhanced diffusion in the ceramic nuclear fuels, i.e. oxides, carbides, nitrides and carbonitrides of uranium and plutonium. Atomic transport in ThO2 is also discussed. Besides experimental results on…
Nuclear reactor physics and engineeringRadioactive element chemistry and processingNuclear Materials and Properties
Claes‐Göran Granqvist1990-01-01Critical reviews in solid state and materials sciences/CRC critical reviews in solid state and materials sciences
Chromogenic materials have optical properties that can be changed in a persistent and reversible manner under the action of an external stimulus. They can regulate the throughput of radiant energy between widely separated extrema, and hence they can be used in future “smart windows” in buildings, cars, etc., and for m…
Transition Metal Oxide NanomaterialsColor Science and ApplicationsAerogels and thermal insulation
Geoffrey O'Brien、A. R. Milnes、H. H. Veeh 等 8 位作者1990-01-01Geological Society London Special Publications
Abstract Detailed sedimentological and geochemical studies of phosphorites and sediments from the East Australian continental margin have shown that both apatite and glauconite are forming at a transition zone between relict, iron oxyhydroxide-rich, organic-poor (TOC<0.3%) outer shelf (200–350 m) sediments and relativ…
Geological and Geochemical AnalysisClay minerals and soil interactionsGeochemistry and Geologic Mapping
B. P. van West、R. Byron Pipes、Michael Keefe1990-01-01Journal of the Textile Institute
The development of a graphical simulation to describe the draping of bidirectional fabrics over arbitrary surfaces is reported. The simulation applies to any surface, described either analytically or numerically, and allows any number of draped configurations on a surface. A unique draped configuration results when on…
Textile materials and evaluationsAdvanced Materials and MechanicsStructural Analysis and Optimization
Takashi Yamashiki、Toshihiko Matsui、Masayoshi Saitoh 等 6 位作者1990-01-01British Polymer Journal
Abstract Steam explosion treatment was carried out on almost pure natural celluloses (wood pulps and purified cotton linter) to obtain alkali‐soluble cellulose and to clarify the effect of cellulose resources on the changes in morphology, viscosity‐average degree of polymerisation P v , solubility towards aqueous alka…
Natural Fiber Reinforced CompositesAdvanced Cellulose Research StudiesLignin and Wood Chemistry