|个人防护设备||Eyeshields,Gloves,type N95 (US),type P1 (EN143) respirator filter|
Antiapoptotic effects of cerium oxide and yttrium oxide nanoparticles in isolated rat pancreatic islets.
Type I diabetes mellitus is a metabolic disease caused by the impairment of pancreatic β-cells mainly mediated through oxidative stress and related apoptosis. Islets transplantation seems a promising...Read More
Magnetic nanoparticles based hyperthermia therapy is a possible low cost and effective technique for killing cancer tissues in the human body. Fe3O4 and Fe3O4@YPO4:5Eu hybrid magnetic nanoparticles ar...Read More
Reactivity of metal oxide clusters with hydrogen peroxide and water--a DFT study evaluating the performance of different exchange-correlation functionals.
We have performed a density functional theory (DFT) investigation of the interactions of H2O2, H2O and HO radicals with clusters of ZrO2, TiO2 and Y2O3. Different modes of H2O adsorption onto the clus...Read More
Modification of electronic properties of top-gated graphene devices by ultrathin yttrium-oxide dielectric layers.
We report the structure characterization and electronic property modification of single layer graphene (SLG) field-effect transistor (FET) devices top-gated using ultrathin Y(2)O(3) as dielectric laye...Read More
A multifunctional biphasic suspension of mesoporous silica encapsulated with YVO(4):Eu(3+) and Fe(3)O(4) nanoparticles: synergistic effect towards cancer therapy and imaging.
Polyol mediated synthesized luminescent YVO(4):Eu(3+) nanoparticles (NPs) have been encapsulated in mesoporous silica nanoparticles (MSNs) using the sol-gel process. X-ray diffraction and Fourier tra...Read More
Efficacy of surface treatments on the bond strength of resin cements to two brands of zirconia ceramic.
Purpose: To compare the shear bond strengths (SBS) of two cements to two Y-TZP ceramics subjected to different surface treatments. Materials and Methods: Zirconia specimens were made from Lava (n = 36...Read More
The clinical performance of three- and four-unit fixed partial dentures (FPDs) with frameworks made of yttria partially stabilized zirconia was determined after a mean observational period of 84 month...Read More
Contrasting behaviour of the co-activators in the luminescence spectra of Y(2)O(2)S:Tb(3+),Er(3+) nanometre sized particles under UV and red light excitation.
Nanometre sized particles of terbium and erbium co-doped yttrium oxysulfide up-converting phosphors were prepared by a urea homogeneous-precipitation method. Results from X-ray powder diffraction (XRP...Read More
Biochemical investigation of yttrium(III) complex containing 1,10-phenanthroline: DNA binding and antibacterial activity.
Characterization of the interaction between yttrium(III) complex containing 1,10-phenanthroline as ligand, [Y(phen)2Cl(OH2)3]Cl2?H2O, and DNA has been carried out by UV absorption, fluorescence spectr...Read More
Magneto-optical properties of cerium substituted yttrium iron garnet films with reduced thermal budget for monolithic photonic integrated circuits.
Thin films of polycrystalline cerium substituted yttrium iron garnet (CeYIG) were grown on an yttrium iron garnet (YIG) seed layer on Si and Si-on-insulator substrates by pulsed laser deposition, and ...Read More
Ferrites are extremely important magnetic ceramics in the production of electronic components because they reduce the energy losses by the induced currents acting as electrical insulators. Similarly, ...Read More
Multifunctional magnetic-fluorescent eccentric-(concentric-Fe3O4@SiO2)@polyacrylic acid core-shell nanocomposites for cell imaging and pH-responsive drug delivery.
Multifunctional fluorescent-magnetic pH-responsive eccentric-(concentric-FeO@SiO)@polyacrylic acid core-double shell nanocomposites (NCs) have been prepared for simultaneous cell imaging and pH-respon...Read More
Novel multifunctional NaYF(4):Er(3+),Yb(3+)/PEGDA hybrid microspheres: NIR-light-activated photopolymerization and drug delivery.
By utilizing multicolor upconversion luminescence of rare earth-doped nanophosphors (UCNPs), NIR-light-activated photopolymerization and controlled drug delivery is achieved for PEGDA hydrogels. The l...Read More
Luminescence properties of europium ions-doped yttrium silicate (Y2SiO5:Eu3+) nanocrystalline phosphors: effect of Eu3+ ion concentration and thermal annealing.
The trivalent europium ions-doped yttrium silicate (Y2SiO5:Eu3+) nanocrystalline phosphors were synthesized via a sol-gel method, followed by post thermal annealing. The effects of thermal annealing t...Read More
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Momentum-dependent charge correlations in YBa2Cu3O6+δ superconductors probed by resonant X-ray scattering: evidence for three competing phases.
We use resonant x-ray scattering to determine the momentum-dependent charge correlations in YBa(2)Cu(3) O(6.55) samples with highly ordered chain arrays of oxygen acceptors (ortho-II structure). The r...Read More
Silica-based nano-coating on zirconia surfaces using reactive magnetron sputtering: effect on chemical adhesion of resin cements.
To compare the effect of silica (Si)-based nano-coating deposited by reactive magnetron sputtering (RMP) with that of conventional surface conditioning using metal/zirconia primer alone or after air-p...Read More
Purpose: To evaluate the microshear bond strength of resin cements to yttrium-stabilized tetragonal zirconium oxide surfaces after water storage for 24 h or 1 year. Materials and Methods: Four self-ad...Read More
Dependence of the up-conversion properties of NaYF4:Yb3+/Er3+ nanopowders on the structure and particle size.
NaYF4:Yb3+/Er3+ powders were synthesized by a solvothermal method. The effects of an amount of NaF, solvothermal temperatures, and solvothermal time on the up-conversion emission and the phase transit...Read More
In the last years white light emitting devices have received increased attention and have been used in a wide range of applications due to their long lifetime, high luminescence efficiency, low power ...Read More
Different types of CAD/CAM systems are currently available, but information regarding which system produces the best marginal fit is lacking.The purpose of this study was to evaluate the effect of 2 d...Read More
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We present an interesting case of a post-Y radioembolization PET scan acquired with the aide of respiratory gating. We postulated that respiratory gating would allow accurate tracking of the tumor pos...Read More
Magnesium alloys possess many desirable properties for biodegradable orthopedic implants. Unfortunately, magnesium degrades too rapidly in vivo. This rapid degradation reduces the alloys' mechani...Read More
The fabrication of zirconium dioxide (ZrO2) dental prosthetic substructures requires an extended sintering process (8 to 10 hours) in a conventional oven. Microwave sintering is a shorter process (2 h...Read More
Cationic half-sandwich yttrium alkyl complexes catalyze the ortho-selective benzylic C?H addition of dialkyl pyridines to various olefins, such as ethylene, 1-hexene, styrenes, and 1,3-conjugated dien...Read More
Treatment Modification of Yttrium-90 Radioembolization Based on Quantitative Positron Emission Tomography/CT Imaging.
Treatment activity for yttrium-90 ((90)Y) radioembolization when calculated by using the manufacturer-recommended technique is only partially patient-specific and may result in a subtumoricidal dose i...Read More