L. Simkhovich、Atif Mahammed、Israel Goldberg 等 4 位作者2001-03-02Chemistry - A European Journal
The germanium(IV), tin(IV). and phosphorus(v) complexes of tris(pentafluorophenyl)corrole were prepared and investigated by electrochemistry for elucidation of the electrochemical HOMO-LUMO gap of the corrole and the spectroscopic characteristics of the corrole pi radical cation. This information was found to be highl…
Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms
Dipa Ray、B. K. Sarkar2001-03-02OpenAlex
Abstract Changes occurring in jute fibers when treated with a 5% concentration of a NaOH solution for 0, 2, 4, 6, and 8 h were characterized by weight loss, linear density, tenacity, modulus, FTIR, and X‐ray measurements. A 9.63% weight loss was measured during 2 h of treatment with a drop of hemicellulose content fro…
Nanocomposite Films for Food PackagingNatural Fiber Reinforced CompositesAdvanced Cellulose Research Studies
Masahiro Irie、Seiya Kobatake、M. Horichi2001-03-02OpenAlex
The surface morphology of a diarylethene single crystal [1,2-bis(2,4-dimethyl-5-phenyl-3-thienyl)perfluorocyclopentene] determined by atomic force microscopy changed reversibly upon photoirradiation. The crystal underwent a thermally irreversible but photochemically reversible color change (colorless to blue) upon alt…
Neurobiology and Insect Physiology ResearchPhotochromic and Fluorescence ChemistryPhotoreceptor and optogenetics research
C. Yalamas、Rudolf Heinisch、Michel Cournil 等 4 位作者2001-03-01Chemical Engineering & Technology
In a catalysts screening for the nitrous oxide decomposition, three groups of catalysts (metals on supports, hydrotalcites, and perovskites) were studied relating to their activity in the presence of vapor or sulfur dioxide, in the temperature range from 200 to 500 °C. It was found that the water vapor strongly inhiba…
Catalytic Processes in Materials ScienceAdvancements in Solid Oxide Fuel CellsCatalysis and Hydrodesulfurization Studies
B. Commerscheidt、R. Gruehn2001-03-01Zeitschrift für anorganische und allgemeine Chemie
Gleichgewichtspartialdrücke pi von heterogenen Reaktionen lassen sich im Bereich 0,1 bar < pi < 15 bar bei Temperaturen bis 1000 °C bestimmen, indem die Massenänderung der Gasphase aufgrund der Reaktion mit einem Bodenkörper, der an einem Ende einer zugeschmolzenen Ampulle aus Quarzglas plaziert ist, mit einer Wägevor…
Radioactive element chemistry and processingSolid-state spectroscopy and crystallographyChemical Thermodynamics and Molecular Structure
R. Laiho、E. Lähderanta、L. S. Vlasenko 等 5 位作者2001-03-01Physics of the Solid State
A change in the electrical conductivity, σ, is observed in the manganese perovskite La 1− x Ca x MnO 3 , with x =0 and 0.3 under saturation of the magnetic resonance transitions of Mn ions. This effect has a maximum in the temperature range of the magnetic phase transition of the compounds. Two contributions to the ch…
Magnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter PhysicsSolid-state spectroscopy and crystallography
L.C. Cadwallader2001-03-01Fusion Technology
This paper presents the results of a study of the qualitative aspects of plasma facing component (PFC) reliability for actively cooled solid wall and liquid wall concepts for magnetic fusion reactor vessels. These two designs have been analyzed for component failure modes. The most important results of that study are…
Fusion materials and technologiesNuclear reactor physics and engineeringNuclear Materials and Properties
M. Aigle、H. Pascher、M. Pinczolits 等 7 位作者2001-03-01physica status solidi (b)
Photoluminescence (PL) experiments have been performed on self-organized PbSe/Pb1—xEuxTe (x = 0.05 to 0.1) quantum dot superlattices grown by molecular beam epitaxy (MBE). At a temperature of 1.7 K, several PL lines were observed in the spectral range from 200 to 230 meV with a relatively narrow width of typically 1 t…
Semiconductor Quantum Structures and DevicesQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films
Iskander Akhatov、Damir B. Khismatullin2001-03-01Acoustical Physics
A two-dimensional interaction between long-wave (sound) and short-wave (ultrasound) pressure perturbations in a rarefied monodisperse mixture of a weakly compressible liquid with gas bubbles is considered. The conditions at which this interaction leads to a singular focusing (an explosive instability) of ultrasound ar…
Seismic Imaging and Inversion TechniquesOcean Waves and Remote SensingUltrasound and Cavitation Phenomena
Fengchao Xie、Zhijun Hu、Jie-Ping Liu 等 9 位作者2001-03-01Macromolecular Rapid Communications
An alignment study of a liquid crystalline copolyether TPP-7/11(5/5) thin films has been carried out in a 10 kV·cm–1 electrostatic field parallel to the thin film surface normal. This copolyether possesses a negative dielectric anisotropy. The chain molecules are homogeneously aligned in the electric field and they fo…
Liquid Crystal Research AdvancementsNonlinear Dynamics and Pattern FormationAdvanced Materials and Mechanics
Takeshi Kawai、Takehisa Konishi、Takashi Fujikawa 等 6 位作者2001-03-01Journal of Synchrotron Radiation
Boar Spermatidal Transition Protein 2 (TP2; 137 amino acid residues) is supposed to play an important role in initiation of chromatin condensation and cessation of transcriptional activity during mammalian spermniogenesis. Boar TP2 has three potential zinc finger motifs and binds three atoms of zinc per molecule. Howe…
Sperm and Testicular FunctionDNA and Nucleic Acid ChemistryEnzyme Structure and Function
Ewa Schab‐Balcerzak、Danuta Sęk、Eugenia Grabiec 等 5 位作者2001-03-01High Performance Polymers
A series of copolymers from 3,3′,4,4′-benzophenonetetracarboxylic di-anhydride and 3,3′,4,4′-biphenyltetracarboxylic dianhydride and two diamines, 4,4′-diaminodiphenylether and 3,5-diaminobenzoic acid, were synthesized. The influence of various ratios of diamines on the properties of polymers were investigated. A prel…
Nonlinear Optical Materials ResearchSynthesis and properties of polymersSynthesis of heterocyclic compounds
В. В. Кривенцов、Dmitrii I. Kochubey、J.A. Navı́o 等 8 位作者2001-03-01Journal of Synchrotron Radiation
The local Zr and Fe arrangements in the nanocomposite system Fe(x)/ZrO2 (x=0-0.2) obtained by sol-gel method were studied by EXAFS. The phase composition was found to vary significantly on iron loading. For the samples calcined at 500 or 600 degrees C, at x< or =0.01, the formed ZrO2 is a mixture of monoclinic and tet…
Thermal and Kinetic AnalysisX-ray Diffraction in CrystallographyChemical and Physical Properties of Materials
Patrick Lagonotte、Marc Broussely、Yves Bertin 等 4 位作者2001-03-01The European Physical Journal Applied Physics
The objective of the present study is to improve the modelling of heat transfer by elementary cells, aiming to increase the quality of their representation in the Laplace space. From the twoport representation and its connections with the classical nodal method, we show that the systematic increase of the order leads…
Heat Transfer and OptimizationMagnetic Properties and ApplicationsThermal properties of materials
Dietrich Braun、Rainer Disselhoff、C. Guckel 等 4 位作者2001-03-01Chemie Ingenieur Technik
Es ist schon lange bekannt, dass man Polyamid-6 (PA-6) mit Hilfe von Phosphorsäure zu seinem Monomeren, dem Caprolactam, abbauen und damit einem rohstofflichen Recycling zuführen kann. Allerdings kann dieses Verfahren, das auch in der industriellen Praxis — vor allem für Faserabfälle aus Polyamid-6 — eingesetzt wird,…
biodegradable polymer synthesis and properties
Sakumitsu Sakagami、Toshiaki Koga、Minoru Nakamizo 等 4 位作者2001-03-01Liquid Crystals
New homologous series of N-[4-(4-n-alkoxybenzoyloxy)-2-hydroxybenzylidene]hydroxyanilines were synthesized. All 4-hydroxyaniline derivatives exhibited a nematic phase, while 3-hydroxyaniline and 2-hydroxyaniline derivatives exhibited only a nematic phase as the terminal alkoxy group was lengthened. Infrared spectra su…
Liquid Crystal Research AdvancementsPhotochemistry and Electron Transfer StudiesMolecular spectroscopy and chirality
Yoshihisa Nagasaki、Toshiaki Yoshihara、Yukihiro Ozaki2001-03-01Liquid Crystals
Temperature-dependent polarized infrared spectra were measured over the temperature range 105-30°C for a ferroelectric liquid crystal with a naphthalene ring (FLC-1) in the isotropic, smectic A (SmA), and chiral smectic C (SmC*) phases to investigate its molecular conformation, interactions, and alignment in each phas…
Liquid Crystal Research AdvancementsSurfactants and Colloidal SystemsMolecular spectroscopy and chirality
Jin-Man Jeoung、Jae-Yong Lim、Young-Guon Kim 等 6 位作者2001-03-01Japanese Journal of Applied Physics
The secondary electron emission coefficient (γ) of vacuum-annealed MgO films has been investigated using a γ-focused ion beam (γ-FIB) system. The vacuum-annealed MgO films have been found to have higher γ values from 0.05 to 0.12 than those from 0.03 to 0.06 for as-deposited MgO films for operating Ne + ions whose acc…
Metal and Thin Film MechanicsPlasma Diagnostics and ApplicationsElectron and X-Ray Spectroscopy Techniques
A. A. EL WARRAKY2001-03-01British Corrosion Journal
The films formed on Cu surfaces in 4% NaCl with 10 ppm FeSO4 solution for short immersion times of up to 4 h were analysed using X-ray photoelectron spectroscopy and Auger electron spectroscopy. Iron was detected on the copper surface after immersion for 30 min. The presence of Fe(OH)2 and α-FeOOH species on the surfa…
Corrosion Behavior and InhibitionElectron and X-Ray Spectroscopy TechniquesNon-Destructive Testing Techniques
K. Takenaka、Sae Kashima、Atsuhiro Osuka 等 7 位作者2001-03-01Physical review. B, Condensed matter
Polarized optical reflectivity is studied in single crystals of ${\mathrm{BaCo}}_{1\ensuremath{-}x}{\mathrm{Ni}}_{x}{\mathrm{S}}_{2}$ over a wide compositional range $0<~x<~0.28$ from the antiferromagnetic insulating to the paramagnetic metallic phase. ${\mathrm{BaCoS}}_{2}$ is a charge-transfer-type Mott insula…
Physics of Superconductivity and MagnetismMagnetic and transport properties of perovskites and related materialsIron-based superconductors research