Jingyang Niu、Dongjie Guo、Jingping Wang 等 4 位作者2004-01-29Crystal Growth & Design
Two composite compounds, [{Ce(DMF) 4 (H 2 O) 3 }{Ce(DMF) 4 (H 2 O) 4 }(P 2 W 18 O 62 )]·H 2 O ( 1 ) (DMF = N, N -dimethylformamide) and [{La(DMF) 6 (H 2 O)}{La(DMF) 4.5 (H 2 O) 2.5 }·(P 2 W 18 O 62 )] ( 2 ), have been constructed at room temperature and characterized by single crystal X-ray structural analyses, ESR sp…
Polyoxometalates: Synthesis and ApplicationsVanadium and Halogenation ChemistryMetal-Organic Frameworks: Synthesis and Applications
Meng‐Yen Chou、Man‐kit Leung、Yuhlong Oliver Su 等 8 位作者2004-01-29Chemistry of Materials
Starburst triarylamines 2 and 3 were electropolymerized to form electrochromic thin films. Film from 2 showed intense absorption at 372 nm before voltage was applied. There were two absorption bands at 496 nm and 1000−2000 nm at 0.3 V, and a broad band, which peaked at 807 nm at 0.6 V. Film from 3 showed intense absor…
Organic Light-Emitting Diodes ResearchConducting polymers and applicationsOrganic Electronics and Photovoltaics
Anke Behnke、Thomas Friedl、Victor A. Chepurnov 等 4 位作者2004-01-29Journal of Phycology
We tested whether internal transcribed spacer (ITS) rDNA sequence differences are correlated with sexual compatibility in the Sellaphora pupula complex, a model system for investigations of the species concept and speciation in diatoms. The phylogenetic relationships among the demes and the systematic position of the…
Aquatic Invertebrate Ecology and BehaviorDiatoms and Algae ResearchGenomics and Phylogenetic Studies
Nadya Mason、Michael J. Biercuk、C. M. Marcus2004-01-29Science
We have measured carbon nanotube quantum dots with multiple electrostatic gates and used the resulting enhanced control to investigate a nanotube double quantum dot. Transport measurements reveal honeycomb charge stability diagrams as a function of two nearly independent gate voltages. The device can be tuned from wea…
Quantum and electron transport phenomenaGraphene research and applicationsCarbon Nanotubes in Composites
Asya Shpiro2004-01-29arXiv
Transport properties of magnetic multilayers in current perpendicular to the plane of the layers geometry are defined by diffusive scattering in the bulk of the layers, and diffusive and ballistic scattering across the interfaces. Due to the short screening length in metals, layer by layer treatment of the multilayers…
Mesoscale and Nanoscale PhysicsMaterials Science
V. R. Coluci、S. F. Braga、Sérgio B. Legoas 等 5 位作者2004-01-29Nanotechnology
Electronic properties of proposed new families of carbon single walled nanotubes are investigated. These nanotubes, called graphynes, result from the elongation of covalent interconnections of graphite-based nanotubes by the introduction of yne groups. Analogous to ordinary nanotubes, armchair, zigzag and chiral graph…
Carbon Nanotubes in CompositesGraphene research and applicationsBoron and Carbon Nanomaterials Research
Kausik Sengupta、S. Rayaprol、E. V. Sampathkumaran 等 5 位作者2004-01-29arXiv
The results of dc magnetization, heat capacity, electrical resistivity (rho) and magnetoresistance measurements are reported in detail for the compounds, RCuAs2 for R= Pr, Nd, Sm, Gd, Tb, Dy, Ho, and Er, crystallizing in HfCuSi2-type tetragonal structure, with the aim of bringing out anomalies among 'normal' (that is,…
Materials ScienceStrongly Correlated Electrons
Sara E. Mason、Ilya Grinberg、Andrew M. Rappe2004-01-29arXiv
We show that a simple first-principles correction based on the difference between the singlet-triplet CO excitation energy values obtained by DFT and high-level quantum chemistry methods yields accurate CO adsorption properties on a variety of metal surfaces. We demonstrate a linear relationship between the CO adsorpt…
Materials Science
Yuval Yaish、J.-Y. Park、Sami Rosenblatt 等 6 位作者2004-01-29Physical Review Letters
We use an atomic force microscope (AFM) tip to locally probe the electronic properties of semiconducting carbon nanotube transistors. A gold-coated AFM tip serves as a voltage or current probe in three-probe measurement setup. Using the tip as a movable current probe, we investigate the scaling of the device propertie…
Force Microscopy Techniques and ApplicationsCarbon Nanotubes in CompositesMechanical and Optical Resonators
Tatiana A. Rynearson、E. Virginia Armbrust2004-01-29Journal of Phycology
Population genetic structure was determined for the planktonic diatom Ditylum brightwellii (West) Grunow in two connected estuaries—Puget Sound and the Strait of Juan de Fuca (WA, USA). Three genetically distinct populations were detected that were characterized by different microsatellite allele distributions and uni…
Marine and coastal ecosystemsMarine Biology and Ecology ResearchDiatoms and Algae Research
G. Srinivasan2004-01-29arXiv
The synthesis of layered ferrite-lead titanate zirconate (PZT) and lanthanum nanganite-PZT and the observation of giant magneto-electric interactions are discussed. The ferrites used in our studies included pure and Zn substituted cobalt-, nickel- and lithium ferrites. Ferromagnetic manganites used included both calci…
Materials Science
C. Sen、G. Alvarez、E. Dagotto2004-01-29arXiv
The physics of manganites appears to be dominated by phase competition among ferromagnetic metallic and charge-ordered antiferromagnetic insulating states. Previous investigations (Burgy {\it et al.}, Phys. Rev. Lett. {\bf 87}, 277202 (2001)) have shown that quenched disorder is important to smear the first-order tran…
Materials ScienceStrongly Correlated Electrons
Alexander Mattausch、Michel Bockstedte、Oleg Pankratov2004-01-29Physical Review B
The photoluminescence center ${D}_{\mathrm{II}}$ is a persistent intrinsic defect which is common in all SiC polytypes. Its fingerprints are the characteristic phonon replicas in luminescence spectra. We perform ab initio calculations of vibrational spectra for various defect complexes and find that carbon antisite cl…
Graphene research and applicationsSemiconductor materials and devicesSilicon Carbide Semiconductor Technologies
James M. Holton、Tom Alber2004-01-29Proceedings of the National Academy of Sciences
Efficient determination of protein crystal structures requires automated x-ray data analysis. Here, we describe the expert system ELVES and its use to determine automatically the structure of a 12-kDa protein. Multiwavelength anomalous diffraction analysis of a selenomethionyl derivative was used to image the Asn-16-A…
Mass Spectrometry Techniques and ApplicationsProtein Structure and DynamicsEnzyme Structure and Function
T.D. Fornes、D.L. Hunter、D. R. Paul2004-01-29OpenAlex
Nylon-6−organoclay nanocomposites were prepared by melt processing via twin-screw extrusion for the purpose of comparing the effect of the number alkyl groups attached to the nitrogen of the organic modifier on the level of organoclay exfoliation. Wide-angle X-ray scattering and transmission electron microscopy techni…
Polymer Nanocomposites and PropertiesPolymer crystallization and propertiesbiodegradable polymer synthesis and properties
Troy D. Manning、Ivan P. Parkin、Martyn E. Pemble 等 5 位作者2004-01-29OpenAlex
Thin films of tungsten-doped vanadium(IV) oxide were prepared on glass substrates from the atmospheric pressure chemical vapor deposition of vanadium(IV) chloride, tungsten(VI) ethoxide, and water at 500−600 °C. The films were characterized by Raman microscopy, glancing angle X-ray diffraction (GAXRD), X-ray photoelec…
Gas Sensing Nanomaterials and SensorsTransition Metal Oxide NanomaterialsGa2O3 and related materials
Haimei Zheng、Junling Wang、S. E. Lofland 等 16 位作者2004-01-29OpenAlex
We report on the coupling between ferroelectric and magnetic order parameters in a nanostructured BaTiO3-CoFe2O4 ferroelectromagnet. This facilitates the interconversion of energies stored in electric and magnetic fields and plays an important role in many devices, including transducers, field sensors, etc. Such nanos…
Ferroelectric and Piezoelectric MaterialsMagnetic and transport properties of perovskites and related materialsMultiferroics and related materials
Neil Shear、Jerome Z. Litt2004-01-28OpenAlex
Hypersensitivity Injection-site extravasation (1999): Fleming A+, J Hand Surg [Br] 24, 390 Injection-site inflammation Injection-site necrosis Injection-site reactions (sic) (3-20%) Injection-site ulceration Mucositis (1999): Ormrod D+, Drugs Aging 15, 389 Myalgia (1995): Fountzilas G+, Med Pediatr Oncol 24, 23 (55%)…
Phytochemistry and Bioactive Compounds
Reshef Tenne2004-01-28ChemInform
Abstract For Abstract see ChemInform Abstract in Full Text.
Fullerene Chemistry and ApplicationsBoron and Carbon Nanomaterials ResearchMXene and MAX Phase Materials
彭全岭、Quanling Peng、SM McMurry 等 4 位作者2004-01-28Journal of Material Science and Technology
Permanent magnet rings are presented, which exploit the image effect in the surrounding circular iron shields. The theory is given for a general permanent ring when the magnetization orientation phi at each coordinate angle psi changes by phi =(n+1)psi, where n is a positive or negative integer. For the uniformly magn…
Magnetic Properties of AlloysMagnetic and Electromagnetic EffectsElectric Motor Design and Analysis