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第 297274 / 315037 页 · 当前展示 5,945,461–5,945,480 / 6,300,729 条匹配结果 · 摘要仅作预览

Three-dimensional cell culture array using magnetic force-based cell patterning for analysis of invasive capacity of BALB/3T3/v-src

Mina Okochi、Sho Takano、Yayoi Isaji 等 6 位作者2009-01-01Lab on a Chip

A three-dimensional (3D) cell culture system has been fabricated using a magnetic force based cell patterning method, demonstrating a facile approach for the analysis of invasive capacity of BALB/3T3/v-src using an magnetic force and magnetite nanoparticles. The 3D cell patterning was performed using an external magne…

Cellular Mechanics and Interactions3D Printing in Biomedical ResearchSilk-based biomaterials and applications

Relation between Inclusion Surface and Acicular Ferrite in Low Carbon Low Alloy Steel Weld

Tomonori Yamada、Hidenori Terasaki、Yu‐ichi Komizo2009-01-01ISIJ International

The inclusion of low carbon submerged arc weld metals of a Ti–B system with different aluminum contents has been studied. The inclusions contributing to acicular ferrite nucleation were multi-phase consisting of MnS, MnAl2O4 and amorphous phases. In the energy dispersive X-ray spectroscopy mapping analysis, inclusions…

Microstructure and Mechanical Properties of SteelsWelding Techniques and Residual StressesMetal Alloys Wear and Properties

The influence of support and particle size on the platinum catalysed oxygen reduction reaction

Brian E. Hayden、Derek Pletcher、Jens‐Peter Suchsland 等 4 位作者2009-01-01Physical Chemistry Chemical Physics

A range of platinum deposits, equivalent thicknesses (delta) 0.2-2.5 nm, have been synthesised on carbon and reduced titania (TiO(x)) supports using physical vapour deposition on (10 x 10) arrays of electrodes. For delta < 1.0 nm, discrete platinum centres are formed and the TiO(x) supported platinum show two distinct…

Electrocatalysts for Energy ConversionCatalytic Processes in Materials ScienceFuel Cells and Related Materials

Nitrogen diffusion in doped TiO2 (110) single crystals: a combined XPS and SIMS study

Robert G. Palgrave、David J. Payne、R.G. Egdell2009-01-01Journal of Materials Chemistry

Rutile TiO2 (110) single crystals were doped with nitrogen by heating at 675 °C in flowing NH3 gas. This caused a red shift in the band edge and an increase in visible region absorption. Nitrogen depth profiles obtained using dynamic secondary ion mass spectrometry (SIMS) could best be fitted by assigning three distin…

Advanced Photocatalysis TechniquesLuminescence Properties of Advanced MaterialsIon-surface interactions and analysis

Template-free synthesis of closed-microporous hybrid and its application in quasi-solid-state dye-sensitized solar cells

Zhang Lan、Jihuai Wu、Sancun Hao 等 6 位作者2009-01-01Energy & Environmental Science

A kind of closed-microporous hybrid with poly(acrylic acid)-poly(ethylene glycol)-polypyrrole (PAA-PEG-PPy) was synthesized template-free by in situ polymerization and micro-phase separation of PPy in PAA-PEG gel. This novel structure hybrid was used as a matrix in preparing polymer gel electrolytes for quasi-solid-st…

TiO2 Photocatalysis and Solar CellsAdvanced Photocatalysis TechniquesQuantum Dots Synthesis And Properties

Blob Transport in the Plasma Edge: a Review

O. E. ̃Garcia2009-01-01Plasma and Fusion Research

A brief review is presented of transport in the boundary region of magnetized plasmas by blob-like filaments. Such structures have enhanced levels of particles and heat, are elongated along the magnetic field lines and are localized in the drift plane across the field. The motion of an isolated blob structure is descr…

Ionosphere and magnetosphere dynamicsMagnetic confinement fusion researchFusion materials and technologies

Temperature-dependence of hydrogen oxidation reaction rates and CO-tolerance at carbon-supported Pt, Pt–Co, and Pt–Ru catalysts

Hiroyuki Uchida、Kenji Izumi、Koichi Aoki 等 4 位作者2009-01-01Physical Chemistry Chemical Physics

The temperature-dependence of the hydrogen oxidation reaction (HOR) rate was examined at commercial Pt, Pt3Co, PtRu, and PtRu(1.5) nano-sized catalysts (diameter, d = ca. 3 nm) supported on carbon black in 0.1 M HClO4 solution in the presence and absence of carbon monoxide by use of a channel flow electrode at tempera…

Electrocatalysts for Energy ConversionCatalytic Processes in Materials ScienceFuel Cells and Related Materials

Influence of particle shape on the magnetic and magnetorheological properties of nanoparticle suspensions

Ana Gómez‐Ramírez、Modesto T. López‐López、J.D.G. Durán 等 4 位作者2009-01-01Soft Matter

CoNi nanofibers (56 nm length, 6.6 nm width) and nanospheres (24 nm diameter) were synthesized by reduction of ions in a liquid polyol. These powders were then characterized by means of electron microscopy, N2 adsorption, energy dispersive X-ray spectroscopy, X-ray diffraction and magnetometry. Similar properties were…

Polymer Nanocomposites and PropertiesVibration Control and Rheological FluidsCharacterization and Applications of Magnetic Nanoparticles

Determining Structures of RNA Aptamers and Riboswitches by X-Ray Crystallography

Andrea L. Edwards、Andrew D. Garst、Robert Batey2009-01-01Methods in molecular biology

Structural biology plays a central role in gaining a full understanding of the myriad roles of RNA in biology. In recent years, innovative approaches in RNA purification and crystallographic methods have lead to the visualization of an increasing number of unique structures, providing new insights into its function at…

RNA and protein synthesis mechanismsEnzyme Structure and FunctionRNA modifications and cancer

Monodisperse self-assembly in a model with protein-like interactions.

Wilber, AW、Doye, JP、Louis, AA 等 4 位作者2009-01-01Oxford University Research Archive (ORA) (University of Oxford)

We study the self-assembly behavior of patchy particles with "proteinlike" interactions that can be considered as a minimal model for the assembly of viral capsids and other shell-like protein complexes. We thoroughly explore the thermodynamics and dynamics of self-assembly as a function of the parameters of the model…

Bacteriophages and microbial interactionsPickering emulsions and particle stabilizationDiffusion and Search Dynamics

Multireference ab initio studies of zero-field splitting and magnetic circular dichroism spectra of tetrahedral Co(ii) complexes

Mahesh Sundararajan、Dmitry Ganyushin、Shengfa Ye 等 4 位作者2009-01-01Dalton Transactions

A newly developed multireference (MR) ab initio method for the calculation of magnetic circular dichroism (MCD) spectra was calibrated through the calculation of the ground- and excited state properties of seven high-spin (S = 3/2) Co(II) complexes. The MCD spectra were computed by the explicit treatment of spin-orbit…

Magnetism in coordination complexesMetal-Catalyzed Oxygenation MechanismsMolecular spectroscopy and chirality

Structures, photoluminescence and photocatalytic properties of three new metal–organic frameworks based on non-rigid long bridges

Dong‐E Wang、Kejian Deng、Kangle Lv 等 6 位作者2009-01-01CrystEngComm

Three new metal–organic coordination polymers, [Cd3(5-NO2-bdc)2(5-NO2-bdcH)2(bpyo)2]n (1), [Mn(5-NO2-bdc)(bbim)]n (2) and {[Gd(5-NO2-bdc)(5-NO2-bdcH)](bpyo)0.5·2H2O}n (3) (5-NO2-bdcH2 = 5-nitro-1,3-benzenedicarboxylic acid; bpyo = 4,4′-bipyridine-N,N′-dioxide; bbim = 1,1′-(1,4-butanediyl)bis(benzimidazole)), were obta…

Metal-Organic Frameworks: Synthesis and ApplicationsMagnetism in coordination complexesPolyoxometalates: Synthesis and Applications

Self-assembly of cerium-based metal–organic tetrahedrons for size-selectively luminescent sensing natural saccharides

Yang Liu、Wu Xiao、Cheng He 等 5 位作者2009-01-01Chemical Communications

New Ce-based Werner type tetrahedrons were achieved for size-selectively luminescent detection of natural carbohydrates through incorporating amide groups as both the multiple hydrogen bonding triggers and binding-signalling transductor.

Molecular Sensors and Ion DetectionSupramolecular Chemistry and ComplexesLuminescence and Fluorescent Materials

Supported vanadium oxide in heterogeneous catalysis: elucidating the structure–activity relationship with spectroscopy

Ilke Muylaert、Pascal Van Der Voort2009-01-01Physical Chemistry Chemical Physics

In order to design the next generation of catalysts, it is crucial that the insights of researchers in heterogeneous catalysis, materials design and spectroscopy are merged. Since the scientific community started to realize that the molecular pattern of a catalyst at room temperature and in vacuum does by no means ref…

Catalytic Processes in Materials ScienceCatalysis and Oxidation ReactionsOxidative Organic Chemistry Reactions

Cancer, chitosan nanoparticles and catalytic nucleic acids

Mei Lin Tan、Peter Choong、Crispin R. Dass2009-01-01Journal of Pharmacy and Pharmacology

OBJECTIVES: The aim of this review was to examine gene therapy involving DNAzyme and siRNA encapsulation into chitosan nanoparticles, discussing the current and future status of this drug delivery system in enhancing drug delivery and cancer therapy. KEY FINDINGS: Cancer is a disease state in which the cells in our bo…

Nanoparticle-Based Drug DeliveryAdvanced biosensing and bioanalysis techniquesRNA Interference and Gene Delivery

Microwave Dielectric Properties and Low‐Temperature Sintering of Cerium Oxide for LTCC Applications

Prabhakaran Sreekumari Anjana、M. T. Sebastian2009-01-01Journal of the American Ceramic Society

The effect of glass additives on the microstructure, densification, and microwave dielectric properties of cerium oxide for low‐temperature co‐fired applications was investigated. Different weight percentages of quenched glass such as B 2 O 3 , B 2 O 3 –SiO 2 , Al 2 O 3 –SiO 2 , ZnO–B 2 O 3 , BaO–B 2 O 3 –SiO 2 , MgO–…

Ferroelectric and Piezoelectric MaterialsAdvanced ceramic materials synthesisMicrowave Dielectric Ceramics Synthesis

Rheological and Chemical Investigation on the Damage and Healing Properties of Bituminous Binders

Ezio Santagata、Orazio Baglieri、Davide Dalmazzo 等 4 位作者2009-01-01PORTO Publications Open Repository TOrino (Politecnico di Torino)

In order to optimize the performance of flexible pavements, one of the key issues which has to be addressed is the characterization and selection of bituminous binders with respect to their capability of contributing to fatigue resistance. In such a context, there is currently the need of developing and validating tes…

Asphalt Pavement Performance EvaluationInfrastructure Maintenance and MonitoringMaterial Properties and Failure Mechanisms

Crystallographic structure refinement with quadrupolar nuclei: a combined solid-state NMR and GIPAW DFT example using MgBr2

Cory M. Widdifield、David L. Bryce2009-01-01Physical Chemistry Chemical Physics

Solid-state NMR spectroscopy and GIPAW DFT calculations reveal the pronounced sensitivity of (79/81)Br and (25)Mg quadrupolar coupling constants to subtle aspects of solid state structure which were not previously detected by pXRD methods.

Advanced NMR Techniques and ApplicationsSolid-state spectroscopy and crystallographyMuon and positron interactions and applications

Viscoelastic properties of confined polymer films measured via thermal wrinkling

Edwin P. Chan、Kirt A. Page、Se Hyuk Im 等 6 位作者2009-01-01Soft Matter

We present a new wrinkling-based measurement technique for quantifying the viscoelastic properties of confined polymer thin films. This approach utilizes real-time laser-light scattering to observe the kinetics of thermally-induced surface wrinkling, which evolves isothermally as a function of annealing time. Specific…

Liquid Crystal Research AdvancementsAdvanced Sensor and Energy Harvesting MaterialsAdvanced Materials and Mechanics

Eddy-Current Loss Minimization in Conducting Sleeves of Surface PM Machine Rotors With Fractional-Slot Concentrated Armature Windings by Optimal Axial Segmentation and Copper Cladding

Manoj R. Shah、Ayman El‐Refaie2009-01-01IEEE Transactions on Industry Applications

When a nonmagnetic high-strength metallic retaining sleeve offers advantages over a nonmetallic (e.g., carbon fiber) one, it is possible to consider the application of a high-conductivity shield ldquocoatingrdquo on this sleeve to reduce the surface eddy-current losses due to nonsynchronous fields. One can start by us…

Electric Motor Design and AnalysisMagnetic Properties and ApplicationsMagnetic Bearings and Levitation Dynamics