Habib Nasri、Yaning Wang、Huynh Boi Hanh 等 5 位作者1991-04-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReactions of bis(nitro)(.alpha.,.alpha.,.alpha.,.alpha.-tetrakis(o-pivalamidophenyl)porphinato)ferrate(III) with pyridine and imidazole. EPR and Moessbauer spectra and molecular structures of the mixed-ligand speciesHabib Nasri, Yaning Wang, Huynh Boi Hanh, F. Ann Walker, an…
Metal complexes synthesis and propertiesPorphyrin and Phthalocyanine ChemistryLanthanide and Transition Metal Complexes
Enrique Colacio、Jean Pierre Costes、Raikko Kivekäs 等 6 位作者1991-04-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA new hydrogen-bonded dinuclear complex involving copper(II) ions in a pseudotetrahedral N3O environment: molecular and crystal structure and magnetic and spectroscopic propertiesEnrique Colacio, Jean Pierre Costes, Raikko Kivekas, Jean Pierre Laurent, Jose Ruiz, and Markku…
Metal-Organic Frameworks: Synthesis and ApplicationsMagnetism in coordination complexesInorganic Fluorides and Related Compounds
Katy Pat Johansson、George McLendon、Alfred P. Marchetti1991-04-01Chemical Physics Letters
The effect of size restriction on the low temperature emission of silver bromide is examined. The critical size for the onset of detectable free exciton emission is determined. The effect of deliberately introduced iodide traps on free exciton luminescence was examined. Several reasons for the enhancement of the free…
Semiconductor Quantum Structures and DevicesQuantum Dots Synthesis And PropertiesNanocluster Synthesis and Applications
Daniel P. Heberer、Stephen Z. D. Cheng、Jeffrey S. Barley 等 6 位作者1991-04-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystallization and morphology of semicrystalline polyimidesDaniel P. Heberer, Stephen Z. D. Cheng, Jeffrey S. Barley, Shawn H. S. Lien, Robert G. Bryant, and Frank W. HarrisCite this: Macromolecules 1991, 24, 8, 1890–1898Publication Date (Print):April 1, 1991Publication His…
Epoxy Resin Curing ProcessesSynthesis and properties of polymersSilicone and Siloxane Chemistry
Rumiko Yamaguchi、Susumu Sato1991-04-01Japanese Journal of Applied Physics
A new type of memory effect is observed in polymer-dispersed-liquid-crystal (PDLC) film with UV-curable polymer. The transmittance of the memory state is preserved for a long time after an applied voltage is removed. In this state, the resistivity of the film decreases and the dielectric constant increases comparing t…
Photonic and Optical DevicesLiquid Crystal Research AdvancementsPhotochemistry and Electron Transfer Studies
Rajiv Vohra、G.J.L. Thomson、H.M.H. Carr 等 5 位作者1991-04-01British journal of surgery
Thin-walled expanded polytetrafluoroethylene (ePTFE), woven Dacron and gelatin-impregnated Dacron (Gelseal) vascular grafts were compared, the grafts being coated with three different matrices: collagen IV, fibronectin and preclot matrix. In addition, untreated ePTFE and Gelseal were examined. The graft segments, coat…
Electrospun Nanofibers in Biomedical ApplicationsAortic aneurysm repair treatmentsHemostasis and retained surgical items
R. Ben-Michael、D. S. Tannhauser、J. Genossar1991-04-01Physical review. B, Condensed matter
Stabilized zirconia, when exposed at high temperature to a reducing atmosphere, becomes colored, and a pronounced room-temperature ESR signal appears. The concentration of the color centers was determined by optical absorption in the uv--visible range, and the concentration of the paramagnetic centers was determined b…
Luminescence Properties of Advanced MaterialsPerovskite Materials and ApplicationsGlass properties and applications
Mathias Jucker、Hynda K. Kleinman、Donald K. Ingram1991-04-01Journal of Neuroscience Research
Responses of rat embryonic septal cells to reconstituted basement membrane, laminin, and laminin A chain-derived synthetic peptides were studied in culture. Dissociated fetal E16/17 septal cells were grown for three days on differently coated plastic substrata. Reconstituted basement membrane (Matrigel), laminin, and…
Nerve injury and regenerationSupramolecular Self-Assembly in MaterialsAnesthesia and Neurotoxicity Research
Liang Xue、Xin Wu、I‐Wei Chen1991-04-01Journal of the American Ceramic Society
Superplastic deformation of alumina ceramics was studied at 1400° to 1450°C and at a strain rate of 4 × 10 −5 to 5 × 10 −4 s −1 . MgO and ZrO 2 were introduced to suppress dynamic grain growth. The latter was especially effective; grain growth was minimal in 10‐vol%‐ZrO 2 ‐containing material. Both materials were supe…
Advanced ceramic materials synthesisMetal and Thin Film MechanicsAluminum Alloys Composites Properties
Michael J. McGeary、Paul S. Coan、Kirsten Folting 等 5 位作者1991-04-01Inorganic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTYttrium and lanthanum silyloxide complexesMichael J. McGeary, Paul S. Coan, Kirsten Folting, William E. Streib, and Kenneth G. CaultonCite this: Inorg. Chem. 1991, 30, 8, 1723–1735Publication Date (Print):April 1, 1991Publication History Published online1 May 2002Published i…
Lanthanide and Transition Metal Complexes
Naoki Shirakawa、Masayasu Ishikawa1991-04-01Japanese Journal of Applied Physics
We have found that a perovskite LaVO 3 exhibits a cubic-to-orthorhombic transformation, immediately followed by a magnetic transition into a large diamagnetic state below about 135 K. Resistivity measurement revealed that the compound is a semiconductor in the whole temperature range investigated, with a slightly larg…
Magnetic and transport properties of perovskites and related materialsMultiferroics and related materialsAdvanced Condensed Matter Physics
Leonard M. Proniewicz、Insook Rhee Paeng、Kazuo Nakamoto1991-04-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTResonance Raman spectra of two isomeric dioxygen adducts of iron(II) porphyrins and .pi.-cation radical and nonradical oxoferryl porphyrins produced in dioxygen matrixes: simultaneous observation of more than seven oxygen isotope sensitive bandsLeonard M. Proniewicz, Insook…
Porphyrin and Phthalocyanine ChemistryPhotodynamic Therapy Research StudiesAnalytical Chemistry and Sensors
Stephen Z. D. Cheng、Sung Koo Lee、Jeffrey S. Barley 等 5 位作者1991-04-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGel/sol and liquid-crystalline transitions in solution of a rigid-rod polyimideStephen Z. D. Cheng, Sung Koo Lee, Jeffrey S. Barley, Steven L. C. Hsu, and Frank W. HarrisCite this: Macromolecules 1991, 24, 8, 1883–1889Publication Date (Print):April 1, 1991Publication History…
Liquid Crystal Research AdvancementsSurfactants and Colloidal SystemsSynthesis and properties of polymers
Róbert Langer、Marsha A. Moses1991-04-01Journal of Cellular Biochemistry
The development of biocompatible, controlled release systems for macromolecules has provided the opportunity for researchers and clinicians to target and deliver, on site, biologically active factors. This advance has also facilitated the purification and characterization of a number of important biomolecules. These s…
Hydrogels: synthesis, properties, applicationsElectrospun Nanofibers in Biomedical Applications3D Printing in Biomedical Research
J. G. Thompson、A. David Rae、Ray L. Withers 等 4 位作者1991-04-01Acta Crystallographica Section B Structural Science
Cristallisation dans A2 1 am avec a=5,4398, b=5,3941, c=25,099 A, Z=4; affinement jusqu'a R=0,0295. Ce compose se decrit, a temperature ambiante, comme une modulation commensurable d'une structure parent Emmm. Le mode displacif F2mm, associe a la ferroelectricite du compose, est different des autres modes Amam et Abam…
Ferroelectric and Piezoelectric MaterialsMesoporous Materials and CatalysisDiatoms and Algae Research
A. Rhallabi、Y. Catherine1991-04-01IEEE Transactions on Plasma Science
A transport and reaction model of a low-pressure, high-frequency (13.56 MHz) CH/sub 4/ plasma used for diamondlike carbon (a-C:H) deposition was developed. The model includes reactions among four molecular species (CH/sub 4/, C/sub 2/H/sub 6/, C/sub 2/H/sub 4/, and H/sub 2/), five radicals and atom (CH/sub 3/, CH/sub…
Metal and Thin Film MechanicsDiamond and Carbon-based Materials ResearchIon-surface interactions and analysis
Yasutake Teraoka、Hirofumi Kakebayashi、Isamu Moriguchi 等 4 位作者1991-04-01Chemistry Letters
Abstract The hydroxy acid-aided process using citric or malic acid produced a perovskite phase at relatively low calcination temperatures. The adjustment of the starting solution to an appropriate pH value in the malic acid-aided process resulted in reducing the temperature for the formation of single-phase perovskite…
Catalytic Processes in Materials Science
Bing‐Ming Cheng、Jeng Wen Lee、Yuan‐Pern Lee1991-04-01The Journal of Physical Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotolysis of nitric acid in solid argon: the infrared absorption of peroxynitrous acid (HOONO)Bing Ming Cheng, Jeng Wen Lee, and Yuan Pern LeeCite this: J. Phys. Chem. 1991, 95, 7, 2814–2817Publication Date (Print):April 1, 1991Publication History Published online1 May 2002…
Advanced Photocatalysis TechniquesCatalytic Processes in Materials ScienceAmmonia Synthesis and Nitrogen Reduction
Frank J. Feher、John F. Walzer、Rusty L. Blanski1991-04-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOlefin polymerization by vanadium-containing polyhedral oligometallasilsesquioxanesFrank J. Feher, John F. Walzer, and Rusty L. BlanskiCite this: J. Am. Chem. Soc. 1991, 113, 9, 3618–3619Publication Date (Print):April 1, 1991Publication History Published online1 May 2002Publ…
Catalysis and Oxidation ReactionsSilicone and Siloxane ChemistryOrganometallic Compounds Synthesis and Characterization
Paul M. Lahti、A. Ichimura1991-04-01The Journal of Organic Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSemiempirical study of electron exchange interaction in organic high-spin .pi.-systems. Classifying structural effects in organic magnetic moleculesPaul M. Lahti and Andrew S. IchimuraCite this: J. Org. Chem. 1991, 56, 9, 3030–3042Publication Date (Print):April 1, 1991Public…
Magnetism in coordination complexesMolecular Junctions and NanostructuresPhotochemistry and Electron Transfer Studies