Sang Ihn Kang、Rama S. Ranganathan、John Emswiler 等 7 位作者1993-06-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, characterization, and crystal structure of the gadolinium(III) chelate of (1R,4R,7R)-.alpha.,.alpha.',.alpha.''-trimethyl-1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (DO3MA)Sang I. Kang, Rama S. Ranganathan, John E. Emswiler, Krishan Kumar, Jack Z. Gougout…
Crystal structures of chemical compoundsMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Isamu Yasuda、Tomoji Hikita1993-06-01Journal of The Electrochemical Society
Electrical conductivity of calcium‐doped lanthanum chromites, , was determined as a function of composition, temperature, and oxygen partial pressure, , to determine its defect structure and understand its redox behavior. The conductivity was independent of and was proportional to the dopant concentration at high . Th…
Advancements in Solid Oxide Fuel CellsGlass properties and applicationsNuclear materials and radiation effects
Douglas G. Johnson、Mark P. Niemczyk、David W. Minsek 等 7 位作者1993-06-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemical electron transfer in chlorophyll-porphyrin-quinone triads: the role of the porphyrin-bridging moleculeDouglas G. Johnson, Mark P. Niemczyk, David W. Minsek, Gary P. Wiederrecht, Walter A. Svec, George L. Gaines III, and Michael R. WasielewskiCite this: J. Am. C…
Photosynthetic Processes and MechanismsPorphyrin and Phthalocyanine ChemistryPhotochemistry and Electron Transfer Studies
R. J. Ward、H.A. Willis、Graeme A. George 等 7 位作者1993-06-01Textile Research Journal
The surface of untreated wool has been investigated using x-ray photoelectron spec troscopy (XPS) and static secondary ion mass spectrometry (SSIMS). The wool surface is covered in a thin layer of lipid estimated to be approximately 0.9 nm thick. Mass spectral peaks are consistent with the presence in the lipid layer…
X-ray Spectroscopy and Fluorescence AnalysisElectron and X-Ray Spectroscopy TechniquesIon-surface interactions and analysis
Galen T. Pickett、Thomas A. Witten、S. R. Nagel1993-06-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEquilibrium surface orientation of lamellaeG. T. Pickett, T. A. Witten, and S. R. NagelCite this: Macromolecules 1993, 26, 12, 3194–3199Publication Date (Print):June 1, 1993Publication History Published online1 May 2002Published inissue 1 June 1993https://pubs.acs.org/doi/10…
Mesoporous Materials and Catalysis
Michel W. Barsoum、Boen Houng1993-06-01Journal of the American Ceramic Society
Ceramic/ceramic composites in the Ti‐B‐C system were fabricated by a novel process referred to as transient plastic phase processing (TPPP). The basic concept is based on the following reaction: “soft” transient plastic matrix + reactant phase → hard matrix + reinforcement phase where the transient plastic phase is a…
Advanced ceramic materials synthesisMXene and MAX Phase MaterialsAdvanced materials and composites
Dean W. Blinn1993-06-01Ecology
Relationships between diatom assemblages and physiocochemical factors were examined in 63 saline lakes in western North America. Sodium was the overwhelmingly dominant cation in the lakes examined; lakes above 47° latitude were dominated by SO 4 — 2 , and lakes below 47° were dominated by CO 3 — 2 and Cl — 1 . This la…
Marine and coastal ecosystemsDiatoms and Algae ResearchAquatic Invertebrate Ecology and Behavior
Juergen Poppe、Michael Moscherosch、Wolfgang Kaim1993-06-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn unusually weak intervalence transition in a very stable bis chelate analog of the ruthenium mixed-valent Creutz-Taube ion. UV/visible/near-IR and EPR spectroelectrochemistry of [(NH3)4Ru(.mu.-bptz)Ru(NH3)4]n+ (bptz = 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine; n = 3 - 5)Juergen…
Organometallic Complex Synthesis and CatalysisMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Ning Pan1993-06-01Textile Research Journal
A critical problem in the study by Komori and Makishima about the microstructural characterization of general fiber assemblies is analyzed, and a modified approach is presented in this paper. The modified theory is able to predict satisfactorily such , parameters as the mean values of the number of fiber contacts and…
Mechanical Behavior of CompositesTextile materials and evaluationsMaterial Properties and Processing
Ulises Martin、H. Boysen、F. Frey1993-06-01Acta Crystallographica Section B Structural Science
A comparative study of tetragonal (Y-TZP, 3 mol% Y 2 O 3 ) and cubic (CSZ, 15 mol% CaO) zirconia powder samples was carried out to learn about a possible structural origin of the superior ionic conductivity of TZP at low temperatures. Structure refinements including anharmonic temperature factors and oxygen occupancie…
Advancements in Solid Oxide Fuel CellsHigh-pressure geophysics and materialsNuclear materials and radiation effects
Wolfgang Schnick1993-06-01Angewandte Chemie
Abstract Unter den Nichtmetallnitriden sind vor allem die polymer aufgebauten binären Verbindungen BN und Si 3 N 4 für die Entwicklung von Werkstoffen für Hochleistungsanwendungen von Interesse. Herausragende Merkmale beider Substanzen sind ihre thermische, mechanische und chemische Beständigkeit bei gleichzeitig geri…
Boron and Carbon Nanomaterials ResearchMXene and MAX Phase MaterialsInorganic Chemistry and Materials
Itaru Honma、Tsuneji Sano、Hiroshi Komiyama1993-06-01The Journal of Physical Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface-enhanced Raman scattering (SERS) for semiconductor microcrystallites observed in silver-cadmium sulfide hybrid particlesI. Honma, T. Sano, and H. KomiyamaCite this: J. Phys. Chem. 1993, 97, 25, 6692–6695Publication Date (Print):June 1, 1993Publication History Publish…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsCopper-based nanomaterials and applications
V. Šucha、I. Kraust、H. Gerthofferová 等 5 位作者1993-06-01Clay Minerals
Abstract The conversion of smectite to illite has been studied in buried bentonites and shales of the East Slovak Neogene Basin, using X-ray diffraction analysis and transmission electron microscopy. A good correlation was observed in both rock types between the content of expandable layers in interstratified illite-s…
Geological and Geochemical AnalysisSoil and Unsaturated FlowClay minerals and soil interactions
J. D. Van Dyke、Kim L. Kasperski1993-06-01Journal of Polymer Science Part A Polymer Chemistry
Abstract Dried samples of polyacrylamide in an He atmosphere have been subjected to thermogravimetric analysis in the 30–600°C range, and the evolved gases were monitored by FTIR. Water, ammonia, and small quantities of carbon dioxide are released in the first stages of decomposition (220–340°C), where the polymer cha…
Polymer Nanocomposites and Propertiesbiodegradable polymer synthesis and propertiesThermal and Kinetic Analysis
Shyam S. Pandey、S. Annapoorni、Bansi D. Malhotra1993-06-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and characterization of poly(aniline-co-o-anisidine). A processable conducting copolymerS. S. Pandey, S. Annapoorni, and B. D. MalhotraCite this: Macromolecules 1993, 26, 12, 3190–3193Publication Date (Print):June 1, 1993Publication History Published online1 May 20…
Organic Electronics and PhotovoltaicsOrganic Light-Emitting Diodes ResearchConducting polymers and applications
Claire Jalbert、Jeffrey T. Koberstein、İskender Yılgör 等 5 位作者1993-06-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular weight dependence and end-group effects on the surface tension of poly(dimethylsiloxane)Claire Jalbert, Jeffrey T. Koberstein, Iskender Yilgor, Paula Gallagher, and Val KrukonisCite this: Macromolecules 1993, 26, 12, 3069–3074Publication Date (Print):June 1, 1993Pu…
Corrosion Behavior and InhibitionPolymer crystallization and propertiesPolymer Nanocomposites and Properties
Y. Tohmori、Y. Yoshikuni、Hiroyuki Ishii 等 7 位作者1993-06-01IEEE Journal of Quantum Electronics
A broad tuning range is demonstrated in tunable DBR lasers with a novel superstructure grating (SSG). These SSG reflectors were fabricated by electron-beam lithography, and grating performance was evaluated by measuring the transmittance characteristics of a ridge-type SSG reflector. Incorporating this SSG reflector i…
Photonic and Optical DevicesPhotorefractive and Nonlinear OpticsOptical Coatings and Gratings
B. Frick、Dieter Richter1993-06-01Physical review. B, Condensed matter
Incoherent-inelastic-neutron-scattering studies were carried out on polyisobutylene, presumably the least-fragile polymeric glass former known so far. A fast dynamical process on a frequency scale of roughly 500 GHz is measured for temperatures higher than the glass transition essentially without being influenced by t…
Material Dynamics and PropertiesTheoretical and Computational PhysicsNMR spectroscopy and applications
H. B. Bohidar、Sidhartha S. Jena1993-06-01The Journal of Chemical Physics
The sol–gel transition in dilute gels of gelatin are studied by differential scanning calorimetry (DSC) and static light scattering techniques. The sol–gel phase diagram clearly shows the existence of an upper critical solution temperature in this system. In addition, the DSC data conclusively exhibits two more phase…
Phase Equilibria and ThermodynamicsMaterial Dynamics and PropertiesSurfactants and Colloidal Systems
Atsuhiro Osuka、Satoshi Nakajima、Kazuhiro Maruyama 等 9 位作者1993-06-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT1,2-Phenylene-bridged diporphyrin linked with porphyrin monomer and pyromellitimide as a model for a photosynthetic reaction center: synthesis and photoinduced charge separationAtsuhiro Osuka, Satoshi Nakajima, Kazuhiro Maruyama, Noboru Mataga, Tsuyoshi Asahi, Iwao Yamazaki,…
Photosynthetic Processes and MechanismsPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms