Craig R. Johnson、Colleen M. Jones、Sanford A. Asher 等 4 位作者1991-05-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEvaluation of the .pi.-bonding ability of imidazole: structure determination and characterization of catena-(H2O)2(1-CH3im)2Mg(.mu.-CN)(CN)4(1-CH3im)Fe(III).cntdot.H2O (1-CH3im = 1-methylimidazole)Craig R. Johnson, Colleen M. Jones, Sanford A. Asher, and Jaime E. AbolaCite t…
Metal-Organic Frameworks: Synthesis and ApplicationsCorrosion Behavior and InhibitionMagnetism in coordination complexes
T.C. Chou、A. Joshi1991-05-01Journal of Vacuum Science & Technology A Vacuum Surfaces and Films
Interfacial reactions of SiC with selected high temperature metals have been studied at temperatures between 1000 and 1200 °C for various times. The metals include Nb, a strong carbide former, Ni, Co, and stainless steel. Reactions of the metals with SiC in this temperature range were extensive; various metal silicide…
Advanced ceramic materials synthesisSilicon Carbide Semiconductor TechnologiesAluminum Alloys Composites Properties
Takahide Minami、Naoto Tamai、Tomoko Yamazaki 等 4 位作者1991-05-01The Journal of Physical Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPicosecond time-resolved fluorescence spectroscopy of the photochromic reaction of spiropyran in Langmuir-Blodgett filmsTakahide Minami, Naoto Tamai, Tomoko Yamazaki, and Iwao YamazakiCite this: J. Phys. Chem. 1991, 95, 10, 3988–3993Publication Date (Print):May 1, 1991Public…
Photochromic and Fluorescence ChemistryPhotoreceptor and optogenetics research
Gordon W. Gribble、Daniel J. Keavy、Erik R. Olson 等 8 位作者1991-05-01Magnetic Resonance in Chemistry
Abstract 19 F chemical shifts are reported for a series of alkyl‐substituted fluoronaphthalenes and related compounds that exhibit steric crowding around the fluorine atom due to the proximity of methyl groups. Comparisons of these chemical shifts with others measured in similar compounds but without the corresponding…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesInorganic Fluorides and Related Compounds
David Guzonas、D. Boils、Michael L. Hair1991-05-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface force measurements of polystyrene-block-poly(ethylene oxide) adsorbed from a nonselective solvent on micaDavid Guzonas, Daniele Boils, and Michael L. HairCite this: Macromolecules 1991, 24, 11, 3383–3387Publication Date (Print):May 1, 1991Publication History Publishe…
Polymer Nanocomposites and PropertiesAnalytical Chemistry and SensorsLubricants and Their Additives
Edward T. Seidl、Henry F. Schaefer1991-05-01The Journal of Physical Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA new configuration of 12-crown-4Edward T. Seidl and Henry F. Schaefer IIICite this: J. Phys. Chem. 1991, 95, 9, 3589–3590Publication Date (Print):May 1, 1991Publication History Published online1 May 2002Published inissue 1 May 1991https://pubs.acs.org/doi/10.1021/j100162a02…
Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryLanthanide and Transition Metal Complexes
Kuiming Liang、György Bánhegyi、Frank E. Karasz 等 4 位作者1991-05-01Journal of Polymer Science Part B Polymer Physics
Abstract Thermal, dielectric, and mechanical relaxation measurements on miscible blends of polybenzimidazole (PBI) and a polyetherimide (PEI, Ultem 1000) prepared by solution casting from dimethylacetamide (DMAc) reveal a number of structurally related features. Annealing below the glass transition temperature induces…
Polymer Nanocomposites and PropertiesDielectric materials and actuatorsSynthesis and properties of polymers
R. A. M. Hikmet、B. H. Zwerver1991-05-01Molecular crystals and liquid crystals
Two-component liquid crystalline (LC) mixtures containing LC diacrylates and chiral molecules with no reactive groups were made. Upon photopolymerisation of the mixtures, cholesteric networks containing up to 28% w/w chiral molecules which were not chemically attached to the networks were created. Temperature dependen…
Liquid Crystal Research AdvancementsPorphyrin and Phthalocyanine ChemistryNonlinear Optical Materials Research
Armin de Meijere、Frank Jaekel、Arndt Simon 等 7 位作者1991-05-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCyclynes. 9. Regioselective coupling of ethynylcyclopropane units: hexaspiro[2.0.2.4.2.0.2.4.2.0.2.4]triaconta-7,9,17,19,27,29-hexayneArmin De Meijere, Frank Jaekel, Arndt Simon, Horst Borrmann, Jurgen Koehler, Dan Johnels, and Lawrence T. ScottCite this: J. Am. Chem. Soc. 1…
Advanced Chemical Physics StudiesPorphyrin and Phthalocyanine ChemistrySynthesis and Properties of Aromatic Compounds
Spencer Knapp、T. G. Murali Dhar、Jennifer Albaneze 等 7 位作者1991-05-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoinduced porphyrin-to-quinone electron transfer across oligospirocyclic spacersSpencer Knapp, T. G. Murali Dhar, Jennifer Albaneze, Steve Gentemann, Joseph A. Potenza, Dewey Holten, and Harvey J. SchugarCite this: J. Am. Chem. Soc. 1991, 113, 10, 4010–4013Publication Dat…
Porphyrin and Phthalocyanine ChemistryPhotochemistry and Electron Transfer StudiesSurface Chemistry and Catalysis
Jianlin Shi、Jianhua Gao、Zu‐Xiang Lin 等 4 位作者1991-05-01Journal of the American Ceramic Society
Fully agglomerated superfine zirconia powders were prepared with the coprecipitation and spray‐drying method. The compaction of such powders shows no fragmentation of the agglomerates. The sintering behavior of the compacts was studied and two sintering stages were identified: densification within agglomerates at temp…
Advanced ceramic materials synthesisCatalytic Processes in Materials ScienceMaterial Dynamics and Properties
A. Haoudi‐Mazzah、Ahmed Mazzah、Hans‐Georg Schmidt 等 5 位作者1991-05-01Zeitschrift für Naturforschung B
Reaction of (tBu) 2 Si(OH) 2 with TiCl 4 , TiBr 4 , TiI 4 , and ZrCl 4 affords eight-membered rings 2a-2d. The X-ray structural analysis of 2a, 2b and 2d reveals in 2a and 2b tetrahedral and in 2d octahedral coordination at the transition metal atoms. The octahedral geometry in 2d is due to two additional coordinated…
Synthesis and characterization of novel inorganic/organometallic compoundsCarbon dioxide utilization in catalysisSilicone and Siloxane Chemistry
Jeffrey T. Kohli、James E. Shelby1991-05-01Journal of the American Ceramic Society
The present study is a comparison of the properties of rare‐earth aluminogermanate and rare‐earth aluminosilicate glasses. Several properties have been measured, including density, transformation temperature, softening point, thermal expansion, Vickers hardness, magnetic susceptibility, Verdet constant, and IR transmi…
Luminescence Properties of Advanced MaterialsGlass properties and applicationsNuclear materials and radiation effects
Ajith V. Kamath、G L Vaaler、Esmond E. Snell1991-05-01Journal of Biological Chemistry
The hdc genes encoding the inducible pyridoxal-P-dependent histidine decarboxylase (HisDCase) of Klebsiella planticola and Enterobacter aerogenes were isolated, sequenced, and expressed in Escherichia coli under control of the lac promoter, and the overproduced enzymes were purified to homogeneity from the recombinant…
Enzyme Structure and FunctionPolyamine Metabolism and ApplicationsGABA and Rice Research
Patrick W. Fowler、Andrzej J. Sadlej1991-05-01Molecular Physics
Electric polarizabilities, dipole and quadrupole moments of the molecules LiH, LiF, LiCl, NaH, NaF, NaCl, BeO, BeS, MgO, MgS, BeH, BeF, BeCl, MgH, MgF, MgCl, LiO, LiS, NaO and NaS are computed in a uniform basis at the correlated level of theory. The results are rationalized in terms of the properties of ion pairs, an…
Advanced Chemical Physics StudiesNonlinear Optical Materials ResearchSolid-state spectroscopy and crystallography
J. Kuyama、Haruyuki Inui、Susumu Imaoka 等 6 位作者1991-05-01Japanese Journal of Applied Physics
Mechanical alloying of a mixture of Ag and Fe powders, with initial grain size of about 100 µm, has been performed. Metallography in atomic scale, by the use of a high resolution electron microscopy, reveals the nanometer-sized crystalline structure in a Ag-50 at%Fe alloy. The 57 Fe Mössbauer spectroscopy confirms the…
Microstructure and mechanical propertiesMetallic Glasses and Amorphous Alloysnanoparticles nucleation surface interactions
James Runt、Catherine A. Barron、Xiu Fang Zhang 等 4 位作者1991-05-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal-amorphous interphases in binary polymer blendsJames P. Runt, Catherine A. Barron, Xiu Fang Zhang, and Sanat K. KumarCite this: Macromolecules 1991, 24, 11, 3466–3468Publication Date (Print):May 1, 1991Publication History Published online1 May 2002Published inissue 1…
Polymer crystallization and propertiesMaterial Properties and ApplicationsPolymer Science and Applications
Thom F. Oostendorp、A. van Oosterom1991-05-01IEEE Transactions on Biomedical Engineering
The use of the boundary element technique in the computation of the potential distribution within isotropic inhomogeneous volume conductors of arbitrary shape set up by current injected through surface electrodes is presented. The derived algorithm is validated by comparing its solution to analytical solutions in the…
High voltage insulation and dielectric phenomenaModel Reduction and Neural NetworksElectromagnetic Simulation and Numerical Methods
S. H. Smith、M. D. Judge1991-05-01Journal of Animal Science
Semimembranosus muscle samples were obtained from 49 Holstein beef animals representing different USDA maturities. Intramuscular collagen (IMC) was isolated in the frozen state and evaluated for heat-labile collagen solubility (% Sol), thermal shrinkage temperature (Ts), enthalpy (Hs) changes, and mature crosslink (py…
Meat and Animal Product QualityCollagen: Extraction and Characterization
Herbert E. Huppert、Ross C. Kerr、John R. Lister 等 4 位作者1991-05-01Journal of Fluid Mechanics
When a suspension of small particles is overlain by a clear fluid whose density is greater than that of the interstitial fluid, but less than that of the bulk suspension, the settling of the dense suspended particles can lead to vigorous convection in the overlying fluid. This novel situation is investigated experimen…
Material Dynamics and PropertiesRheology and Fluid Dynamics StudiesHeat and Mass Transfer in Porous Media