Ayako Sasaki、Yoshihiro Furukawa、Daiyû Nakamura1989-10-01Berichte der Bunsengesellschaft für physikalische Chemie
Abstract The spin‐lattice relaxation time T 1 and the NMR second moment M 2 of 1 H and 19 F nuclei were determined at various temperatures above 77 K for (NH 4 ) 3 [InF 6 ] and (NH 4 ) 3 [GaF 6 ] crystals. From the fact that small M 2 values observed for both nuclei from fairly low temperatures, it is concluded that t…
Advanced NMR Techniques and ApplicationsSolid-state spectroscopy and crystallographyInorganic Fluorides and Related Compounds
D. N. Bose、M.S. Hedge、S. Basu 等 4 位作者1989-10-01Semiconductor Science and Technology
The composition of n- and p-type CdTe surfaces before and after chemical modification by Ru have been examined using X-ray photoelectron spectroscopy (XPS). While the chemically etched unmodified surfaces were found to be covered by a thin layer of oxide due to ambient oxidation of a Te layer, Ru-modified surfaces wer…
Chalcogenide Semiconductor Thin FilmsAdvanced Semiconductor Detectors and MaterialsElectron and X-Ray Spectroscopy Techniques
Kwangkyoung Liou、Michael Y. Ogawa、Timothy P. Newcomb 等 9 位作者1989-10-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation, characterization, and low-temperature transition of (triazatetrabenzoporphyrinato)copper(I) iodide, a new porphyrinic conductor with local moments coupled to itinerant charge carriersKwangkyoung Liou, Michael Y. Ogawa, Timothy P. Newcomb, Guy Quirion, Moohee Lee…
Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryOrganic and Molecular Conductors Research
Walter Brockmann1989-10-01The Journal of Adhesion
Adequate adhesion between metals and polymers is primarily the result of chemical bonds in the boundary layer. This region, however, is subject to degradation by moisture. Three modes of deterioration are observed. The first is a largely reversible weakening effect in the polymer layer near the metal oxide surface. Th…
Corrosion Behavior and InhibitionSurface Modification and SuperhydrophobicityHigh voltage insulation and dielectric phenomena
A. Weickenmeier、Helmut Kohl1989-10-01Philosophical Magazine B
Analytical electron microscopes are well suited for producing energy spectroscopic diffraction (ESD) patterns. In particular, an ESD pattern recorded at an element-specific energy loss yields information about the position of impurity atoms within the unit cell of a crystal lattice. Any quantitative information can on…
Semiconductor materials and devicesX-ray Spectroscopy and Fluorescence AnalysisElectron and X-Ray Spectroscopy Techniques
X. Quan1989-10-01Polymer Engineering and Science
Abstract Post‐curing of vinyl‐addition cured siloxane networks can take place due to the presence of excess silicon hydride. The reaction of these groups, which leads to increased crosslink density especially at elevated temperatures, can be retarded by treatment with ammonia gas or eliminated by exposure to ethylene…
Polymer composites and self-healingEpoxy Resin Curing ProcessesSilicone and Siloxane Chemistry
Mikhail Dzugutov、U. Dahlborg1989-10-01Physical Review A
A molecular-dynamics simulation of liquid Bi at 578 K using a system of 16 384 particles, supported by neutron-scattering measurements, shows that the side peaks of its dynamical structure factor S(Q\ensuremath{\omega}), attributed to the collective density excitations, are unobservable beyond wave vector Q=0.6 A${\r{…
High-pressure geophysics and materialsMaterial Dynamics and PropertiesThermodynamic and Structural Properties of Metals and Alloys
J.M.C. Thornton、R H Williams1989-10-01Semiconductor Science and Technology
Hydrogen-terminated silicon surfaces produced by etching in solutions of HF have been studied using photoelectron spectroscopy and LEED. They have been found to be remarkably free from contamination, locally ordered and electrically passivated. The hydrogen may be removed from the (100) surface by annealing in UHV at…
Plasma Diagnostics and ApplicationsElectron and X-Ray Spectroscopy TechniquesPhotocathodes and Microchannel Plates
J. Chapple-Sokol、Carmen J. Giunta、Roy G. Gordon1989-10-01Journal of The Electrochemical Society
A mechanistic study of oxide deposition from silane and nitrous oxide between 495°C and 690°C was performed in a laminar flow, cool wall reactor. Results indicated the existence of two distinct chemical pathways. At high nitrous oxide concentrations, the deposition reaction is dominated by radical chain chemistry init…
Catalytic Processes in Materials ScienceAdvancements in Solid Oxide Fuel CellsSemiconductor materials and devices
Takamasa Kudo、H. Tsuge、Taishi Moroishi1989-10-01CORROSION
Effect of nickel and nitrogen contents on stress corrosion cracking (SCC) of 22%Cr–3%Mo-base duplex stainless steel was investigated in simulated sour environments with respect to both the base metal and the heat-affected zone (HAZ) of welding. The threshold stress and the critical chloride concentration for SCC were…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsWelding Techniques and Residual Stresses
Soae L. Paek1989-10-01Textile Research Journal
This study investigates the flex abrasion, stress-strain, and pilling performance of test fabrics woven from open-end and ring spun yams. The propensity of test fabrics to pilling is evaluated after repeated exposure to random tumble pilling (RTP) and the elastomeric pad method (EPM), using scanning electron micrograp…
Mechanical Behavior of CompositesDyeing and Modifying Textile FibersTextile materials and evaluations
Hiroyuki Mashiyama、Naohiro Koshiji1989-10-01Acta Crystallographica Section B Structural Science
Etude par diffraction RX de la phase (1) desordonnee, des phases (III-IV) modulees commensurables et de la phase (V) a basse temperature, pour une temperature respectivement egale a 293, 273, 261 et 168 K. La phase (I), cristallise dans Pmcn avec affinement jusqu'a 0,050. La phase (III) cristallise dans P2 1/c avec af…
Crystal structures of chemical compoundsSolid-state spectroscopy and crystallographyChemical Thermodynamics and Molecular Structure
B. Wallén、S. Henrikson1989-10-01Materials and Corrosion
Abstract The effect of chlorination on the corrosion resistance of different stainless steels in North Sea water has been studied, the sea‐water exposures being performed at two Norwegian seawater laboratories. In one laboratory test specimens, simulating various components used in a seawater cooling system, were imme…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsConcrete Corrosion and Durability
Lynda J. Donald、Gilles Francois Molgat、Harry W. Duckworth1989-10-01Journal of Bacteriology
The structural gene for the allosteric citrate synthase of Pseudomonas aeruginosa has been cloned from a genomic library by using the Escherichia coli citrate synthase gene as a hybridization probe under conditions of reduced stringency. Subcloning of portions of the original 10-kilobase-pair (kbp) clone led to isolat…
Bacterial Genetics and BiotechnologyMicrobial Natural Products and BiosynthesisEnzyme Structure and Function
Chaitanya K. Narula、Riley Schaeffer、Ahbaya Datye 等 4 位作者1989-10-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of boron nitride ceramics from 2,4,6-triaminoborazineChaitanya K. Narula, Riley Schaeffer, Ahbaya Datye, and Robert T. PaineCite this: Inorg. Chem. 1989, 28, 21, 4053–4055Publication Date (Print):October 1, 1989Publication History Published online1 May 2002Publishe…
Advanced ceramic materials synthesisBoron and Carbon Nanomaterials ResearchMXene and MAX Phase Materials
M. Pedio、J. C. Fuggle、J. Somers 等 12 位作者1989-10-01Physical review. B, Condensed matter
X-ray absorption spectra at the O 1s edge are presented for O(2\ifmmode\times\else\texttimes\fi{}2)/Ni(111), O(2\ifmmode\times\else\texttimes\fi{}1)/Cu(110), and O/Si(111)-(7\ifmmode\times\else\texttimes\fi{}7). The spectra yield information on the distribution of O 2p and np state character in the unoccupied states.…
ZnO doping and propertiesCatalytic Processes in Materials ScienceCopper-based nanomaterials and applications
Tsang‐Tse Fang、Horng‐Bin Lin1989-10-01Journal of the American Ceramic Society
Several experiments have been conducted to investigate the preparation of barium titanyl oxalate tetrahydrate (BTO). Differential thermal analysis and thermogravimetric analysis were employed to investigate the thermal decomposition, and an X‐ray diffractometer and a transmission electron microscope were used to analy…
Silicone and Siloxane Chemistry
James P. Collman、James M. Garner、L. Keith Woo1989-10-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe chemistry of rhenium and tungsten porphyrin complexes in low oxidation states. Synthesis and characterization of rhenium and tungsten porphyrin dimers containing metal-metal multiple bondsJames P. Collman, James M. Garner, and L. Keith WooCite this: J. Am. Chem. Soc. 198…
Porphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation MechanismsCO2 Reduction Techniques and Catalysts
E. Martuscelli、Clara Silvestre、Maurizio Canetti 等 6 位作者1989-10-01Die Makromolekulare Chemie
Abstract The crystallization and the thermal behaviour of thin films of isotactic polypropylene/hydrogenated oligo(cyclopentadiene) of low molecular weight (iPP/HOCP) are studied using optical microscopy and differential scanning calorimetry (DSC). The spherulite growth rate, the overall crystallization rate and the e…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesConducting polymers and applications
Ramamurthy Palepu、Vincent C. Reinsborough1989-10-01Canadian Journal of Chemistry
Pre-micellar and micellar sodium perfluorooctanoate solutions (SPFO) were examined conductometrically with added α-cyclodextrin(α-CD), β-cyclodextrin (β-CD), and γ-cyclodextrin (γ-CD). The order of stability of the 1:1 inclusion complex was (β-CD > γ-CD > α-CD determined largely by the goodness of fit of the flu…
Analytical Chemistry and ChromatographyFluorine in Organic ChemistrySynthesis and properties of polymers