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RANKL delivery from calcium phosphate containing PLGA microspheres

Rosa P. Félix Lanao、Ruggero Bosco、Sander C.G. Leeuwenburgh 等 7 位作者2013-03-25Journal of Biomedical Materials Research Part A

Ideally, bone substitute materials would undergo cell-mediated degradation during the remodeling process of the host bone tissue while being replaced by newly formed bone. In an attempt to exploit the capacity of Receptor Activator of Nuclear factor Kappa-B Ligand (RANKL) to stimulate osteoclast-like cells formation,…

Bone Tissue Engineering MaterialsOrthopaedic implants and arthroplastyTitanium Alloys Microstructure and Properties

Magnetic susceptibility studies of the spin-glass and Verwey transitions in magnetite nanoparticles

K. L. López Maldonado、Patricia de la Presa、Edith Flores-Tavizón 等 7 位作者2013-03-25Journal of Applied Physics

Magnetite nanostructured powder samples were synthesized by aging chemical method. Phase, structural, and magnetic properties were characterized. X-ray diffraction patterns showed cubic magnetite pure phase, with average crystallite size, 〈D〉, equal to 40 nm. Susceptibility measurements showed the well-known Verwey tr…

Magnetic Properties and Synthesis of FerritesIron oxide chemistry and applicationsPigment Synthesis and Properties

Changes in the quaternary structure and function of MjHSP16.5 attributable to deletion of the IXI motif and introduction of the substitution, R107G, in the α -crystallin domain

Roy A. Quinlan、Yan Zhang、Andrew Lansbury 等 6 位作者2013-03-25Philosophical Transactions of the Royal Society B Biological Sciences

The archael small heat-shock protein (sHSP), MjHSP16.5, forms a 24-subunit oligomer with octahedral symmetry. Here, we demonstrate that the IXI motif present in the C-terminal domain is necessary for the oligomerization of MjHSP16.5. Removal increased the in vitro chaperone activity with citrate synthase as the client…

Heat shock proteins researchEnzyme Structure and FunctionConnexins and lens biology

Interplay Between Bromine and Iodine in Oxidative Dehydrogenation

Kunlun Ding、Horia Metiu、Galen D. Stucky2013-03-25ChemCatChem

Abstract Oxidative dehydrogenation is a promising way to produce olefins, diolefins and aromatics. However, the product yield is limited by the consecutive oxidation of the product to oxygenated products. The highest yield reported for propane oxidative dehydrogenation is only about 30 %. Alternatively, halogens can b…

Catalytic Processes in Materials ScienceCatalysis and Oxidation ReactionsOxidative Organic Chemistry Reactions

Dye Degradation by Layer‐by‐Layer Immobilised Peroxidase/Redox Mediator Systems

Raffaele Saladino、Melissa Guazzaroni、Claudia Crestini 等 4 位作者2013-03-25ChemCatChem

Abstract Horseradish peroxidase (HRP) was immobilised on Eupergit C 250 L resin coated with poly‐electrolytes, or by entrapment inside pre‐formed layer‐by‐layer (LbL) micro‐capsules of poly‐electrolytes. In these systems, namely HRP/E‐LbL, HRPm/LbL and HRPm/LbLp, the native enzyme retained its catalytic activity. Immo…

Electrochemical sensors and biosensorsEnzyme-mediated dye degradationAdvanced Nanomaterials in Catalysis

SIMULATION OF NORMAL PERFORATION OF ALUMINUM PLATES USING AXISYMMETRIC SMOOTHED PARTICLE HYDRODYNAMICS WITH CONTACT ALGORITHM

Yihua Xiao、Dean Hu、Xu Han 等 5 位作者2013-03-25International Journal of Computational Methods

An axisymmetric smoothed particle hydrodynamics (ASPH) with contact algorithm is presented to simulate the normal perforation of aluminum plates. Traditional ASPH considering contact implicitly by conservation equations has the problem of virtual tensile stresses and shear stresses for perforation simulation. To overc…

Dynamics and Control of Mechanical SystemsFluid Dynamics Simulations and InteractionsHigh-Velocity Impact and Material Behavior

Effect of High Strain Rate on Indentation in Pure Aluminum

Hiroyuki YAMADA、Nagahisa OGASAWARA、Yoko Shimizu 等 6 位作者2013-03-25Journal of Engineering Materials and Technology

The indentation properties of pure aluminum (99.9%, 3N aluminum) and high purity aluminum (99.999%, 5N aluminum) with respect to the strain rate dependence of strength are experimentally investigated in order to clarify the effect of strain rate on the micro-indentation test. A micro-indentation test using a Berkovich…

Advanced ceramic materials synthesisMetal and Thin Film MechanicsAdvanced Surface Polishing Techniques

A review of zinc oxide photoanode films for dye-sensitized solar cells based on zinc oxide nanostructures

M. D. Tyona、Rose U. Osuji、Fabian I. Ezema2013-03-25Advances in nano research

Zinc oxide (ZnO) is a unique semiconductor material that exhibits numerous useful properties for dye-sensitized solar cells (DSSCs) and other applications. Various thin-film growth techniques have been used to produce nanowires, nanorods, nanotubes, nanotips, nanosheets, nanobelts and terapods of ZnO. These unique nan…

TiO2 Photocatalysis and Solar CellsAdvanced Photocatalysis TechniquesZnO doping and properties

Dissipation of Film Drainage Resistance by Hydrophobic Surfaces in Aqueous Solutions

Louxiang Wang、Zhenghe Xu、Jacob H. Masliyah2013-03-25The Journal of Physical Chemistry C

Understanding and minimizing the film drainage resistance (forces) from a moving fluid are of great importance both scientifically and technologically. The direct and accurate measurement of film drainage resistance was made possible by integrating a speaker diaphragm of large displacement range and rapid responses wi…

Surface Modification and SuperhydrophobicityMicrofluidic and Bio-sensing TechnologiesMinerals Flotation and Separation Techniques

Spatiotemporal Control of Vascular Endothelial Growth Factor Expression Using a Heat-Shock-Activated, Rapamycin-Dependent Gene Switch

Francisco M. Martín-Saavedra、Christopher G. Wilson、Richard Voellmy 等 5 位作者2013-03-25Human Gene Therapy Methods

A major challenge in regenerative medicine is to develop methods for delivering growth and differentiation factors in specific spatial and temporal patterns, thereby mimicking the natural processes of development and tissue repair. Heat shock (HS)-inducible gene expression systems can respond to spatial information pr…

Cellular Mechanics and InteractionsHeat shock proteins researchSilk-based biomaterials and applications

Magnetic order and low-energy excitations in the quasi-one-dimensional antiferromagnet CuSe 2 O 5 with staggered fields

Mirta Herak、A. Zorko、M. Pregelj 等 12 位作者2013-03-25Physical Review B

Ground-state and low-energy excitations of the quasi-one-dimensional antiferromagnet CuSe${}_{2}$O${}_{5}$ where finite interchain interactions promote long-range antiferromagnetic order below ${T}_{N}=17$ K, were experimentally studied using bulk magnetization, neutron diffraction, muon spin relaxation, and antiferro…

Physics of Superconductivity and MagnetismMultiferroics and related materialsAdvanced Condensed Matter Physics

Effects of Single and Double Post Injections on Diesel PCCI Combustion

Young-Soo Park、Choongsik Bae2013-03-25SAE technical papers on CD-ROM/SAE technical paper series

In this study, single and double post injections were applied to diesel premixed charge compression ignition (PCCI) combustion to overcome the drawbacks those are high level of hydrocarbons (HC) and carbon monoxide (CO) emissions in a single-cylinder direct-injection diesel engine. The operating conditions including e…

Advanced Combustion Engine TechnologiesCatalytic Processes in Materials ScienceBiodiesel Production and Applications

Photoelectron spectroscopy of the aluminum hydride anions: AlH2−, AlH3−, Al2H6−, Al3H9−, and Al4H12−

Xinxing Zhang、Haopeng Wang、Evan Collins 等 9 位作者2013-03-25The Journal of Chemical Physics

We report measurements of the negative ion photoelectron spectra of the simple aluminum hydride anions: AlH2(-), AlH3(-), Al2H6(-), Al3H9(-), and Al4H12(-). From these spectra, we measured the vertical detachment energies of the anions, and we estimated the electron affinities of their neutral counterparts. Our result…

Advanced Chemical Physics StudiesAtomic and Molecular PhysicsHydrogen Storage and Materials

Fatigue behavior and lifetime distribution of impact-damaged carbon fiber/toughened epoxy composites under compressive loading

Toshio Ogasawara、Sunao Sugimoto、Hisaya Katoh 等 4 位作者2013-03-25Advanced Composite Materials

This paper presents fatigue lifetime data of impact-damaged carbon fiber/toughened epoxy composites under compressive loading to elucidate the lifetime prediction methodology based on statistical approaches. Drop-weight impact damage was induced to a composite specimen with impact energy of 6.7 J/mm in accordance with…

Mechanical Behavior of CompositesNatural Fiber Reinforced CompositesFiber-reinforced polymer composites

The role of Ag nanoparticles in inverted polymer solar cells: Surface plasmon resonance and backscattering centers

Peng Xu、Liang Shen、Fanxu Meng 等 9 位作者2013-03-25Applied Physics Letters

Here, we demonstrate silver (Ag) nanoparticles (NPs) existing in molybdenum trioxide (MoO3) buffer layers can improve the photocurrent by surface plasmon resonance (SPR) and backscattering enhancement. The device structure is glass/indium tin oxides/titanium dioxide (TiO2)/regioregular poly(3-hexylthiophene):[6,6]-phe…

Organic Electronics and PhotovoltaicsThin-Film Transistor TechnologiesConducting polymers and applications

Three-dimensional mapping of the anisotropic magnetoresistance in Fe3O4 single crystal thin films

Zhaofeng Ding、Junxue Li、Jianguo Zhu 等 6 位作者2013-03-25Journal of Applied Physics

The anisotropic magnetoresistance (AMR) effect with a magnetic field along arbitrary directions in single crystalline (001)-oriented Fe3O4 films was studied. A cubic symmetry term, an in-plane uniaxial term, and an out-of-plane uniaxial term could be quantitatively separated. The cubic term is independent of the curre…

Magnetic properties of thin filmsMagnetic Properties and Synthesis of FerritesMagneto-Optical Properties and Applications

Distinctive contributions of the ribosomal P-site elements m2G966, m5C967 and the C-terminal tail of the S9 protein in the fidelity of initiation of translation in Escherichia coli

Siddharth Arora、Satya Prathyusha Bhamidimarri、Moitrayee Bhattacharyya 等 7 位作者2013-03-25Nucleic Acids Research

The accuracy of pairing of the anticodon of the initiator tRNA (tRNA(fMet)) and the initiation codon of an mRNA, in the ribosomal P-site, is crucial for determining the translational reading frame. However, a direct role of any ribosomal element(s) in scrutinizing this pairing is unknown. The P-site elements, m(2)G966…

RNA and protein synthesis mechanismsEnzyme Structure and FunctionRNA modifications and cancer

Exact surface-plasmon polariton solutions at a lossy interface

Andreas Norrman、Tero Setälä、Ari T. Friberg2013-03-25Optics Letters

Making use of a rigorous electromagnetic treatment, we demonstrate that the approximate results that are customarily employed for the analysis of a plasmon field at a metal/dielectric boundary are incorrect even in some situations in which they are supposed to hold. We show further that a new type of surface-plasmon s…

Plasmonic and Surface Plasmon ResearchPhotonic Crystals and ApplicationsOptical Coatings and Gratings

Impregnation of β‐tricalcium phosphate robocast scaffolds by in situ polymerization

Francisco J. Martínez‐Vázquez、Fidel Hugo Perera、Inge van der Meulen 等 6 位作者2013-03-25Journal of Biomedical Materials Research Part A

Ring-opening polymerization of ε-caprolactone (ε-CL) and L-lactide (LLA) was performed to impregnate β-tricalcium phosphate (β-TCP) scaffolds fabricated by robocasting. Concentrated colloidal inks prepared from β-TCP commercial powders were used to fabricate porous structures consisting of a 3D mesh of interpenetratin…

Bone Tissue Engineering MaterialsDental materials and restorationsbiodegradable polymer synthesis and properties

Topological Phase Transitions Driven by Magnetic Phase Transitions in Fe x Bi 2 Te 3 ( 0 ≤ x ≤ 0.1 ) Single Crystals

Heon‐Jung Kim、Ki‐Seok Kim、J.-F. Wang 等 14 位作者2013-03-25Physical Review Letters

We propose a phase diagram for ${\mathrm{Fe}}_{x}{\mathrm{Bi}}_{2}{\mathrm{Te}}_{3}$ ($0\ensuremath{\le}x\ensuremath{\le}0.1$) single crystals, which belong to a class of magnetically bulk-doped topological insulators. The evolution of magnetic correlations from ferromagnetic to antiferromagnetic gives rise to topolog…

Magnetic and transport properties of perovskites and related materialsTopological Materials and PhenomenaAdvanced Condensed Matter Physics