Β. Eisenmann、Roland Zagler1989-03-01Zeitschrift für Naturforschung B
Abstract The crystal structures of Na 3 SbSe 4 , K 3 SbSe 4 and [Ba(en) 4 ] 2 [Ba(en) 3 ](SbSe 4 ) 2 contain isolated tetrahedral anions SbSe 4 3- , which are the first examples of selenoantimonates(V). Na 3 SbSe 4 (space group 143m , a = 750.1(2) pm, Z = 2) is an isotype of the (NH 4 ) 3 SbS 4 -structure type; K 3 Sb…
Crystal Structures and PropertiesSolid-state spectroscopy and crystallographyInorganic Chemistry and Materials
Adam V. Ratner、Steven C. Quay、Holde H. Muller 等 6 位作者1989-03-01Investigative Radiology
RATNER, ADAM V. MD; QUAY, STEVEN MD, PhD; MULLER, HOLDE H. MS; SIMPSON, BEVERLY BRADLEY BS; HURD, RALPH PhD; YOUNG, STUART W. MD Author Information
Organic Light-Emitting Diodes ResearchLanthanide and Transition Metal ComplexesElectron Spin Resonance Studies
G. M. Choi、Harry L. Tuller、J. S. Haggerty1989-03-01Journal of The Electrochemical Society
Nonstoichiometry and charge transport properties of have been investigated as functions of doping level, temperature, and thermal history. Undoped and single‐crystals and undoped, , , , , , and polycrystalline specimens of have been characterized using complex impedance techniques. The magnitude of ionic conductivitie…
Advanced Battery Materials and TechnologiesAdvancements in Solid Oxide Fuel CellsNuclear materials and radiation effects
Takashi Tatsumi、Nakamura Makoto、Hiro-o Tominaga1989-03-01Chemistry Letters
Abstract Immobilization of Mn(TPP)Cl (TPP = tetraphenylporphyrin) onto 3-imidazolylpropyl-modified SiO2 resulted in enhancement of its activity for hydroxylation of cyclohexane; the support prevented the complex from forming a dimer leading to oxidative destruction.
Electrochemical sensors and biosensorsMesoporous Materials and CatalysisPorphyrin and Phthalocyanine Chemistry
David R. Parker、Donald L. Sparks、G. J. Hendricks 等 4 位作者1989-03-01Soil Science Society of America Journal
Abstract Corn ( Zea mays L.) grown on sandy Atlantic Coastal Plain soils is often unresponsive to applications of K fertilizer. As part of a field study on the response of irrigated, intensively managed corn to K applications, we characterized four representative Hapludults from the Delaware Coastal Plain and evaluate…
Soil Carbon and Nitrogen DynamicsSoil and Unsaturated FlowClay minerals and soil interactions
P. N. Sanda、D. B. Dove、Hiap Liew Ong 等 5 位作者1989-03-01Physical Review A
The alignment of a nematic liquid crystal, 4'-n-pentyl-4-cyanobiphenyl (5CB), on several smooth metal (Cr, Cu, Ag, and Au) surfaces was observed experimentally. Perpendicular (homeotropic) induced alignment was observed for Cu and Ag boundary layers, whereas parallel alignment was observed for Cr and Au. These differe…
Liquid Crystal Research AdvancementsForce Microscopy Techniques and ApplicationsMolecular spectroscopy and chirality
Rosamaría Fong、J. R. Dahn、Raymond J. Batchelor 等 5 位作者1989-03-01Physical review. B, Condensed matter
${\mathrm{Li}}_{2\mathrm{\ensuremath{-}}\mathrm{x}}$${\mathrm{Cu}}_{\mathrm{x}}$${\mathrm{FeS}}_{2}$ forms a solid solution for 0\ensuremath{\le}x\ensuremath{\le}1. The crystal structures of ${\mathrm{LiCuFeS}}_{2}$ [a=3.807(2) A\r{} and c=6.352(1) A\r{}] and ${\mathrm{Li}}_{1\mathrm{\ensuremath{-}}\mathrm{\ensuremath…
Chalcogenide Semiconductor Thin FilmsMetal Extraction and BioleachingIron-based superconductors research
J. Rabier、M. P. Püls1989-03-01Philosophical magazine. A/Philosophical magazine. A. Physics of condensed matter. Structure, defects and mechanical properties
Point-defect-dislocation interaction and migration energies within the core of an edge dislocation have been calculated using atomistic models. Point-ion as well as shell and breathing-shell models have been used. For vacancies, the greatest binding energies are at the dislocation's edge and are from three to four tim…
Advanced ceramic materials synthesisFusion materials and technologiesNuclear Materials and Properties
A. D. Karathanasis、Kenneth L. Wells1989-03-01Soil Science Society of America Journal
Abstract This study was an attempt to predict potential long‐term mineralogical transformation trends in soils under continuous no‐tillage management using the in situ soil solution composition as a sensitive index of changes occurring in the soil system. Mineralogical and soil solution compositions of surface and sub…
Soil and Unsaturated FlowSoil Geostatistics and MappingClay minerals and soil interactions
D. P. Armstrong、Robert J. Jarabek、William H. Fletcher1989-03-01Applied Spectroscopy
Micro-Raman spectroscopy has been utilized to examine the spectra of solid samples of α-UF 5 , β-UF 5 , UF 6 , three types of UO 2 F 2 , the powder residue from a static UF 6 release, and γ-UO 3 . The spectra are presented and compared to previous literature values, with new features indicated where appropriate. With…
Nuclear Materials and PropertiesMolten salt chemistry and electrochemical processesInorganic Fluorides and Related Compounds
Clémence Veith、Robert E. Cohen1989-03-01Journal of Polymer Science Part A Polymer Chemistry
Abstract Use of promoter dimethylsulfoxide (DMSO) in conjunction with initiator normal butyllithium has resulted in rapid and controllable ring‐opening polymerization of 1,3,5‐tris‐(3′,3′,3′‐trifluoro‐propyl)1,3,5‐trimethylcyclotrisiloxane at 40°C; monomer consumption rate can be varied by at least four orders of magn…
biodegradable polymer synthesis and propertiesSynthesis and properties of polymersSilicone and Siloxane Chemistry
В. В. Бражкин、V.I. Larchev、С. В. Попова 等 4 位作者1989-03-01Physica Scripta
The results of the rapid quenching from the melt of the pure metals (In, Pb) at high pressures 0.7-8.0 GPa with a cooling rate ~ 10 3 K s −1 are presented. The supercooling of the melt was measured, and the high pressure influence on the basic parameters of the solidification process are analysed. The short-range orde…
Material Dynamics and PropertiesChalcogenide Semiconductor Thin FilmsPhase-change materials and chalcogenides
G. P. Johari、Andreas Hallbrucker、Erwin Mayer1989-03-01The Journal of Physical Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal behavior of several hyperquenched organic glassesG. P. Johari, Andreas Hallbrucker, and Erwin MayerCite this: J. Phys. Chem. 1989, 93, 6, 2648–2652Publication Date (Print):March 1, 1989Publication History Published online1 May 2002Published inissue 1 March 1989https:…
Conducting polymers and applicationsLuminescence and Fluorescent MaterialsSolid-state spectroscopy and crystallography
Daniel L. Reger、Mark F. Huff、Thomas A. Wolfe 等 4 位作者1989-03-01Organometallics
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA novel copper(I) complex with bridging alkyne ligands. The synthesis and structural characterization of [Cu4(O2CCF3)4(.mu.-EtC.tplbond.CEt)2]Daniel L. Reger, Mark F. Huff, Thomas A. Wolfe, and Richard D. AdamsCite this: Organometallics 1989, 8, 3, 848–850Publication Date (P…
Metal complexes synthesis and propertiesMagnetism in coordination complexesMetal-Catalyzed Oxygenation Mechanisms
Stefan R. Witek、Gary A. Miller、Martin P. Harmer1989-03-01Journal of the American Ceramic Society
Fully dense, undoped AIN is found to have the following average mechanical properties: hardness, 12.2 GPa; strength, 377 MPa; and fracture toughness (based on the fracture load sustained by indented disks), 3.6 MPa·m½. The addition of 2 wt% CaO to AIN changes the fracture mode from transgranular to intergranular while…
Advanced ceramic materials synthesisMetal and Thin Film MechanicsBoron and Carbon Nanomaterials Research
Robert A. Schoonheydt、Hugo Leeman1989-03-01The Journal of Physical Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFormation of the silver hexameric (Ag6x+) cluster in zeolite ARobert A. Schoonheydt and Hugo LeemanCite this: J. Phys. Chem. 1989, 93, 5, 2048–2053Publication Date (Print):March 1, 1989Publication History Published online1 May 2002Published inissue 1 March 1989https://doi.or…
Quantum Dots Synthesis And PropertiesNanocluster Synthesis and ApplicationsSurface Chemistry and Catalysis
Hiroshi Nagai、Ken Ohbayashi1989-03-01Journal of the American Ceramic Society
The effect of TiO 2 addition on the sintering behavior and the electrical conductivity of Cr 2 O 3 was studied at 1473 K at various oxygen pressures, 10 5 > P o 2 > 10 −10 Pa. TiO 2 addition of more than 1 wt% drastically enhanced the sintering of Cr 2 O 3 in the oxygen pressure range 10 −3 Pa > P o 2 because…
Advanced ceramic materials synthesisAdvanced materials and compositesNuclear materials and radiation effects
Claudius Feger1989-03-01Polymer Engineering and Science
Abstract The imidization of films of the polyamic acid obtained from reaction of pyromellitic dianhydride (PMDA) with oxydianiline (ODA) was studied by dynamic mechanical thermal analysis (with the Polymer Labs DMTA), Two process regions are observed. The first process is characterized by decomplexation of the NMP/pol…
Epoxy Resin Curing ProcessesSynthesis and properties of polymersSilicone and Siloxane Chemistry
David Gagnon1989-03-01IEEE Transactions on Antennas and Propagation
A procedure is derived for proper refocusing of a dielectric-filled Rotman lens with beam port locations determined according to Snell's law. The theoretical performance of such a lens is compared with that of a conventional design at wide scan angle and the design equations for correct refocusing of the refracting le…
Microwave Engineering and WaveguidesElectromagnetic Simulation and Numerical MethodsOptical Coatings and Gratings
Kenji Ema、George Nounesis、C. W. Garland 等 4 位作者1989-03-01Physical Review A
Binary mixtures of octyloxyphenyl-nitrobenzoyloxy benzoate (${\mathrm{DB}}_{8}$${\mathrm{ONO}}_{2}$) and decycloxyphenyl-nitrobenzoyloxy benzoate (${\mathrm{DB}}_{10}$${\mathrm{ONO}}_{2}$) exhibit a rich variety of smectic polymorphism. An ac calorimetric study has been carried out on six mixtures with mole percent X…
Liquid Crystal Research AdvancementsPhotochemistry and Electron Transfer StudiesMolecular spectroscopy and chirality