Roland Contant、René Thouvenot1991-10-01Canadian Journal of Chemistry
The di-, tri-, and hexavacant lacunary tungstoarsenates α-[HAs 2 W 16 O 59 ] 11− , α-[As 2 W 15 O 56 ] 12− , and α-[H 2 As 2 W 12 O 48 ] 12− were prepared by controlled alkaline degradation of the Dawson-type anion α-[As 2 W 18 O 62 ] 6− . The relationships between all these anions and the two α-[As 2 W 17 O 61 ] 10−…
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsChemical Synthesis and Characterization
Takaki Kanbara、Nobuo Saito、Takakazu Yamamoto 等 4 位作者1991-10-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and properties of poly(quinolinediyl)s and poly(isoquinoline-1,4-diyl) with new π-conjugation systemsTakaki Kanbara, Nobuo Saito, Takakazu Yamamoto, and Kenji KubotaCite this: Macromolecules 1991, 24, 21, 5883–5885Publication Date (Print):October 1, 1991Publicati…
Conducting polymers and applicationsSynthesis and properties of polymersSynthesis of Organic Compounds
P. Boltenhagen、Oleg D. Lavrentovich、M. Kléman1991-10-01Journal de Physique II
Observations with the polarizing microscope of defects in the lyotropic Lα(SmA) phase of the quasi-ternary system cetylpiridinium chloride/hexanol/brine give evidence that oily streaks are chains of focal conic domains. The chains are stable in the vicinity of the Lα-L3 phase transition. Such a model of oily streaks w…
Liquid Crystal Research AdvancementsSurfactants and Colloidal SystemsFood Chemistry and Fat Analysis
Dietmar Seyferth、Nathan Bryson、David P. Workman 等 4 位作者1991-10-01Journal of the American Ceramic Society
Pyrolysis of preceramic polymer/metal powder composites resulted in formation of ceramic products containing the metal as well as element present in the polymer. Prepared in this manner were ceramics containing crystalline phases of metal silicides, metal carbides, metal nitrides, metal borides, and silicon carbide. T…
Advanced ceramic materials synthesis
B. J. Pestman、J. Th. M. De Hosson、V. Vítek 等 4 位作者1991-10-01Philosophical magazine. A/Philosophical magazine. A. Physics of condensed matter. Structure, defects and mechanical properties
The interaction of ½<110> screw and 60° dislocations with symmetric [110] tilt boundaries was investigated by atomistic simulations using many-body potentials representing a pure f.c.c. metal and ordered intermetallic compounds. The calculations were performed with and without an applied shear stress. The observations…
Microstructure and mechanical propertiesHigh Temperature Alloys and CreepBoron and Carbon Nanomaterials Research
Yasuyuki Sakata、Yasutaka Ishii1991-10-01The Journal of Organic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA versatile transformation of vic-diols into .alpha.-hydroxy ketones with hydrogen peroxide catalyzed by peroxotungstophosphatesYasuyuki Sakata and Yasutaka IshiiCite this: J. Org. Chem. 1991, 56, 21, 6233–6235Publication Date (Print):October 1, 1991Publication History Publi…
Polyoxometalates: Synthesis and ApplicationsChemical Synthesis and ReactionsOxidative Organic Chemistry Reactions
Roman F. Renneke、Miryam Kadkhodayan、Marzia Pasquali 等 4 位作者1991-10-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRoles of surface protonation on the photodynamic, catalytic, and other properties of polyoxometalates probed by the photochemical functionalization of alkanes. Implications for irradiated semiconductor metal oxidesRoman F. Renneke, Miryam Kadkhodayan, Marzia Pasquali, and Cr…
Advanced Photocatalysis TechniquesPolyoxometalates: Synthesis and Applications
T. M. Shaw、P. R. Duncombe1991-10-01Journal of the American Ceramic Society
Experiments in which the disperson and flocculation behavior of aluminum oxide grains in a Ca‐Al‐Si‐O silicate liquid are examined have been used to determine the nature of the forces between oxide grains in a silicate melt. From observations of the way in which the melt penetrates grain boundaries in a high‐purity po…
Advanced ceramic materials synthesisAluminum Alloys Composites PropertiesSolidification and crystal growth phenomena
C. LiCalsi、T.S. Crocenzi、Ernesto Freire 等 4 位作者1991-10-01Journal of Biological Chemistry
Enzyme I, the first in the sequence of phosphocarrier proteins of the bacterial phosphoenolpyruvate:glycose phosphotransferase system, is a potential critical point for regulating sugar uptake. The thermal stability of Enzyme I was studied by high sensitivity differential scanning calorimetry. At pH 7.5, thermal unfol…
Protein Structure and DynamicsBacterial Genetics and BiotechnologyEnzyme Structure and Function
Somnath Dutta、Partha Basu、Animesh Chakravorty1991-10-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMononuclear manganese(IV) in tridentate ONO coordination. Synthesis, structure, and redox regulation via oxygen donor variationSomnath Dutta, Partha Basu, and Animesh ChakravortyCite this: Inorg. Chem. 1991, 30, 21, 4031–4037Publication Date (Print):October 1, 1991Publicatio…
Metal-Organic Frameworks: Synthesis and ApplicationsMetal complexes synthesis and propertiesMagnetism in coordination complexes
Th. Binkert、J. Oberreich、M. Meewes 等 5 位作者1991-10-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCoil-globule transition of poly(N-isopropylacrylamide): a study of segment mobility by fluorescence depolarizationT. Binkert, J. Oberreich, M. Meewes, R. Nyffenegger, and J. RickaCite this: Macromolecules 1991, 24, 21, 5806–5810Publication Date (Print):October 1, 1991Publica…
Polymer Nanocomposites and Propertiesbiodegradable polymer synthesis and propertiesAdsorption, diffusion, and thermodynamic properties of materials
Jangmi Ryu、Tomiji Wakida、Toru Takagishi1991-10-01Textile Research Journal
Corona discharge has been widely used to modify polymer surfaces because it can be operated at an atmospheric pressure in air. In this study, wool fiber and fabric were corona discharged, and afterwards wettability, laundry shrinkage, and frictional coef ficients were determined. An ESCA analysis was done to elucidate…
Surface Modification and SuperhydrophobicityElectrospun Nanofibers in Biomedical ApplicationsTextile materials and evaluations
Jeffrey S. Moore、Zhifu Xu1991-10-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of rigid dendritic macromolecules: enlarging the repeat unit size as a function of generation, permitting growth to continueJeffrey S. Moore and Zhifu XuCite this: Macromolecules 1991, 24, 21, 5893–5894Publication Date (Print):October 1, 1991Publication History Pub…
RNA Interference and Gene DeliveryClick Chemistry and ApplicationsDendrimers and Hyperbranched Polymers
Takahiro Hashimoto、Mikihito Takenaka、Hiroshi Jinnai1991-10-01Journal of Applied Crystallography
Structure self-assembling in the spinodal decomposition (SD) of polymer blends in its late stage has been explored for a near-critical mixture of polybutadiene and polyisoprene by a time-resolved light scattering technique, with a particular emphasis on the time evolution of the interface structure. By analysis of a s…
Material Dynamics and PropertiesPolymer Nanocomposites and PropertiesBlock Copolymer Self-Assembly
Stephen Z. D. Cheng、Fred E. Arnold、Anqiu Zhang 等 5 位作者1991-10-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrganosoluble, segmented rigid-rod polyimide film. 1. Structure formationStephen Z. D. Cheng, Fred E. Arnold Jr., Anqiu Zhang, Steve L. C. Hsu, and Frank W. HarrisCite this: Macromolecules 1991, 24, 21, 5856–5862Publication Date (Print):October 1, 1991Publication History Pub…
Dendrimers and Hyperbranched PolymersSynthesis and properties of polymersSilicone and Siloxane Chemistry
Andreas Goerling、Notker Roesch、D. E. Ellis 等 4 位作者1991-10-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic structure of main-group-element-centered octahedral gold clustersA. Goerling, N. Roesch, D. E. Ellis, and H. SchmidbaurCite this: Inorg. Chem. 1991, 30, 21, 3986–3994Publication Date (Print):October 1, 1991Publication History Published online1 May 2002Published in…
Catalytic Processes in Materials ScienceNanocluster Synthesis and ApplicationsAdvanced Materials Characterization Techniques
Axel T. Brünger1991-10-01Annual Review of Physical Chemistry
X-ray crystallography (see Refs. 1 , 2 for reviews) is an increasingly impor tant tool for understanding structure, function, and control of biological macromolecules. Developments in genetics, data collection, and computer hardware have produced an unprecedented growth of macromolecular crystallographic studies. X-r…
Enzyme Structure and FunctionAdvanced X-ray Imaging TechniquesX-ray Diffraction in Crystallography
Shigeyoshi Makino、M Harada、Koichi Akashi 等 7 位作者1991-10-01PubMed
A simplified method was established for cryopreservation of peripheral blood stem cells (PBSCs) using hydroxyethyl starch (HES) and dimethylsulfoxide (DMSO) as a cryoprotective agent at -80 degrees C without rate-controlled freezing. The data indicate that a cryoprotective solution consisting of 6% HES and 5% DMSO pro…
Reproductive Biology and FertilityElectrospun Nanofibers in Biomedical ApplicationsTissue Engineering and Regenerative Medicine
Ryoji Nakayama、Toru Takeshita、Masaru Itakura 等 5 位作者1991-10-01Journal of Applied Physics
The hydrogen treatment of the Nd-Fe-B alloy ingots was found to produce magnet powders with good magnetic properties. Typical magnetic properties of these powders are as follows; 4πIs = 9.5 kG, Br = 7.7 kG, iHc = 9.4 kOe, and (BH)max = 12.2 MGOe. Microstructural studies of these powders showed that they are made of fi…
Rare-earth and actinide compoundsHydrogen Storage and MaterialsMagnetic Properties of Alloys
Juan Colmenero、A. Alegr�a、J. M. Alberdi 等 5 位作者1991-10-01Physical review. B, Condensed matter
The dynamics of the \ensuremath{\alpha} relaxation in a glass-forming polymeric system, poly(vinyl methyl ether) (PVME) has been studied by means of dielectric and mechanical spectroscopies and nuclear magnetic resonance, as well as by means of quasielastic neutron scattering. By using these techniques we have covered…
Material Dynamics and PropertiesGlass properties and applicationsNMR spectroscopy and applications