Placido Neri、Mario C. Foti、George B. Ferguson 等 9 位作者1992-09-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTp-tert-Butylcalix[6]arene symmetrically tetrasubstituted with pyridine pendant groups: synthesis, x-ray crystal structure, and conformational analysis by dynamic NMR spectroscopy and molecular mechanics calculationsPlacido Neri, Mario Foti, George Ferguson, John F. Gallagher…
Supramolecular Chemistry and ComplexesMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Baojun Qu、Yunhua Xu、Wenfang Shi 等 4 位作者1992-09-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoinitiated crosslinking of low-density polyethylene. 6. Spin-trapping ESR studies on radical intermediatesBaojun Qu, Yunhua Xu, Wenfang Shi, and Bengt RaanbyCite this: Macromolecules 1992, 25, 20, 5215–5219Publication Date (Print):September 1, 1992Publication History Pub…
Conducting polymers and applicationsPhotochemistry and Electron Transfer StudiesElectrochemical Analysis and Applications
Roger Uhrhammer、Donna J. Crowther、Jeffrey D. Olson 等 5 位作者1992-09-01Organometallics
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and characterization of tantalum(V) dicarbollide complexesRoger Uhrhammer, Donna J. Crowther, Jeffrey D. Olson, Dale C. Swenson, and Richard F. JordanCite this: Organometallics 1992, 11, 9, 3098–3104Publication Date (Print):September 1, 1992Publication History Publ…
Organometallic Complex Synthesis and CatalysisAdvanced Electron Microscopy Techniques and ApplicationsMachine Learning in Materials Science
H. Behner、J. Wecker、Th. Matthée 等 4 位作者1992-09-01Surface and Interface Analysis
Abstract In this work we have studied the interface reactions during e‐beam evaporation of yttria‐stabilized zirconia (YSZ), yttria (Y 2 O 3 ) and Y on Si(100) substrates by means of x‐ray photoelectron spectroscopy (XPS). A deposition process was developed for the heteroepitaxial growth of YSZ and Y 2 O 3 . A high am…
ZnO doping and propertiesElectron and X-Ray Spectroscopy TechniquesElectronic and Structural Properties of Oxides
M. Pardavi‐Horváth、L. Takács1992-09-01IEEE Transactions on Magnetics
Small magnetic particles of iron embedded in an insulating alumina matrix have been prepared by ball milling, either by direct milling of a mixture of iron and alumina powders or indirectly by ball-milling enhanced displacement reaction between magnetite and aluminum metal. The average particle size could be reduced t…
Magnetic properties of thin filmsMetallic Glasses and Amorphous AlloysMagnetic Properties of Alloys
M. Endoh、Keisuke Nakamura、H. Mikami1992-09-01IEEE Transactions on Magnetics
The Mo-substituted Nd(Fe,Mo)/sub 12/N/sub x/ compounds are investigated. The ThMn/sub 12/ crystal structure has been obtained for the RFe/sub 11/Mo composition by optimizing the solution treatment temperature, and the magnetic properties of RFe/sub 11/MoN/sub x/ have been measured. The NdFe/sub 11/MoN/sub x/ shows lar…
Magnetic properties of thin filmsRare-earth and actinide compoundsMagnetic Properties of Alloys
Ivan Gitsov、Karen L. Wooley、Jean M. J. Fréchet1992-09-01Angewandte Chemie
Aus hifunktionellen Polyethylenglycolen und dendritischen aromatischen Polyethern 1 mit Bromsubstituenten am Zentrum des Makromoleküls entstehen in einer quantitativ verlaufenden Reaktion Blockcopolymere. Diese bilden in Lösungsmitteln, in denen sich beide Blöcke sehr schlecht oder sich ein Block selektiv gut löst, Mi…
Advanced Polymer Synthesis and CharacterizationDendrimers and Hyperbranched PolymersSynthesis and properties of polymers
M. Bark、H. G. Zachmann、Rufina G. Alamo 等 4 位作者1992-09-01Die Makromolekulare Chemie
Abstract The isothermal crystallization of linear polyethylene fractions was studied by means of simultaneous measurements of wide‐angle X‐ray scattering (WAXS) and small‐angle X‐ray scattering (SAXS) employing synchrotron radiation. From WAXS the overall degree of crystallinity x c was determined. From SAXS, the scat…
Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties
Ursula Pieper、Alexander Steinbà ⁄ chel1992-09-01FEMS Microbiology Letters
The first polyhydroxy acid (PHA) synthase gene (phbCRr) of a Gram-positive bacterium was cloned from a genomic library of Rhodococcus ruber in the broad-host-range plasmid vector pRK404. The hybrid plasmid harboring phbCRr allowed the expression of polyhydroxybutyric acid (PHB) synthase activity and restored ability o…
biodegradable polymer synthesis and propertiesEnzyme Structure and FunctionBiopolymer Synthesis and Applications
Subhash B. Deshpande、H.S. Potdar、Prakash D. Godbole 等 4 位作者1992-09-01Journal of the American Ceramic Society
Stoichiometric quantities of AR‐grade chemicals, e.g., Ba(NO 3 ) 2 , Sr(NO 3 ) 2 , and Nb 2 O 5 , were used to synthesize Sr 0.5 Ba 0.5 Nb 2 O 6 (SBN:50) by the solid‐state reaction route. The reaction mixture was characterized by DTA/TG/DTG to locate the formation temperature of SBN:50. X‐ray diffrction was used to i…
Ferroelectric and Piezoelectric MaterialsAdvanced ceramic materials synthesisMicrowave Dielectric Ceramics Synthesis
Emmanuel Cadot、René Thouvenot、André Tézé 等 4 位作者1992-09-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSyntheses and multinuclear NMR characterizations of .alpha.-[SiMo2W9O39]8- and .alpha.-[SiMo3-xVxW9O40](4+x)- (x = 1, 2) heteropolyoxometalatesEmmanuel Cadot, Rene Thouvenot, Andre Teze, and Gilbert HerveCite this: Inorg. Chem. 1992, 31, 20, 4128–4133Publication Date (Print)…
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsAdvanced Nanomaterials in Catalysis
Ming Wah Wong、Kenneth B. Wiberg1992-09-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructures, bonding, and absorption spectra of amine-sulfur dioxide charge-transfer complexesMing Wah Wong and Kenneth B. WibergCite this: J. Am. Chem. Soc. 1992, 114, 19, 7527–7535Publication Date (Print):September 1, 1992Publication History Published online1 May 2002Publis…
Photochemistry and Electron Transfer StudiesOrganic and Molecular Conductors ResearchOrganic Chemistry Cycloaddition Reactions
Makoto Kuwabara、Seiji Takahashi、Koji Goda 等 5 位作者1992-09-01Japanese Journal of Applied Physics
The phase transition behavior in the systems of (1- x )Pb(Mg 1/3 Nb 2/3 )O 3 - x PbTiO 3 (PMN-PT) and 0.99Pb 1- y La 2 y /3 TiO 3 -0.01MnO 2 (PLT) relaxor ferroelectrics has been investigated to explore the nature of diffused phase transitions (DPT) in these materials. All the dielectric constant (ε)-temperature ( T )…
Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesMicrowave Dielectric Ceramics Synthesis
Philippe Blanchard、K. Boubekeur、Marc Sallé 等 11 位作者1992-09-01Advanced Materials
The search for κ‐phases of conducting and superconducting organic cation radical salts is difficult because it is not yet known which characteristics of the donor molecule are required for this structure to be generated. The figure shown the hydroxy‐methyl‐functionalized non‐centroxymmetrical donor EDT‐TTF(CH 2 OH), w…
Magnetism in coordination complexesCrystallography and molecular interactionsOrganic and Molecular Conductors Research
Michael Lang、N. Toyota、T. Sasaki 等 4 位作者1992-09-01Physical review. B, Condensed matter
We present results of the dc magnetization of single-crystalline \ensuremath{\kappa}-(BEDT-TTF${)}_{2}$Cu[N(CN${)}_{2}$]Br. From the slope of the linear M(lnH) dependence of the reversible magnetization, the magnetic penetration depth \ensuremath{\lambda}(T) is estimated. At low temperatures, \ensuremath{\lambda}(T) s…
Physics of Superconductivity and MagnetismMagnetism in coordination complexesOrganic and Molecular Conductors Research
M. Vázquez、C. Gómez‐Polo、D.X. Chen1992-09-01IEEE Transactions on Magnetics
Hysteresis loops and domain structure of as-cast Fe-rich and stress-annealed low magnetostrictive Co-rich bistable wires have been investigated as functions of the distance to the end of wires with different lengths. From the analysis of the changes of the squareness ratio and differential susceptibility at remanence,…
Magnetic properties of thin filmsMetallic Glasses and Amorphous AlloysMagnetic Properties and Applications
Yen‐Ting Lin、Martin Fusek、Xinli Lin 等 6 位作者1992-09-01Journal of Biological Chemistry
The pH dependence of the kinetic parameters of pepsin, rhizopuspepsin, and their active-site hydrogen bond mutants has been determined. These data have permitted the calculation of two active-site ionization constants in the free enzymes (pKe1 and pK32) and in the enzyme-substrate complexes (pKes1 and pKes2). The pKe1…
Protein Structure and DynamicsDNA and Nucleic Acid ChemistryEnzyme Structure and Function
Yong Li、Wayne L. Mattice1992-09-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAtom-based modeling of amorphous 1,4-cis-polybutadieneYong Li and Wayne L. MatticeCite this: Macromolecules 1992, 25, 19, 4942–4947Publication Date (Print):September 1, 1992Publication History Published online1 May 2002Published inissue 1 September 1992https://pubs.acs.org/d…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesPolymer Nanocomposite Synthesis and Irradiation
J. M. D. Coey、R. Skomski、S. Wirth1992-09-01IEEE Transactions on Magnetics
The gas-phase interstitial modification of rare-earth intermetallics is studied. Net reaction energies for nitrogen in Sm/sub 2/Fe/sub 17/ and Nd(Fe/sub 11/Tl) are U/sub 0/=-57 kJ/mole and U/sub 0/=-51 kJ/mole, respectively. The equilibrium nitrogen concentration is calculated as function of temperature and gas pressu…
Rare-earth and actinide compoundsMagnetic Properties of AlloysMetallurgical and Alloy Processes
Kiyoshi Haga、Tsuyoshi Ishii、Jin-ichi Mashiyama Jin-ichi Mashiyama 等 4 位作者1992-09-01Japanese Journal of Applied Physics
Dielectric properties of two-phase mixture systems including rutile (TiO 2 ) have been investigated. One of its binary compounds-MnTiO 3 , ZnTiO 3 , PbTiO 3 and Al 2 TiO 5 -was chosen as the second component. Dielectric constants ε r and their temperature coefficients τ e were first examined at 1 MHz. Dielectric prope…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsMicrowave Dielectric Ceramics Synthesis