Synthesis, Characterization and Applications of Rare-Earth-Element-Doped Nanoparticles

With the excellent optical performance, the rare-earth-element-doped (RE-doped) nanomaterials have been widely applied in biological system and optical engineering. The understanding about effects of rare earth elements on optical properties needs to be further achieved. In the present research, a new approach has been developed to control the morphology and modify the optical performance of engineered RE-doped nanomaterials. Experimental approaches contain synthesis, characterization, and optical and tomographic imaging investigation of nanomaterials: morphology-controlled yttrium oxide doped with erbium and ytterbium (Yv2Ov3:Er^3+,Yb^3+), hydrogen-treated aluminum yttrium oxide (Yv3Al5Ov12 or YAG) doped with cerium (YAG:Ce^3+), and oleic acid coated sodium yttrium fluoride (OA-NaYF4:Er^3+,Yb^3+). The morphology of Yv2Ov3:Er^3+,Yb^3+ were controlled by introducing metal ions during facile hydrothermal synthesis. It was found that the negatively charged aluminum complex ions enabled the evolution of nanotubes through rolling from nanosheets. The positively charged calcium complex ions prohibited the rolling of nanosheets. For hydrogen-treated YAG:Ce^3+, the hydrogenation has been firstly used to induce the defects into the host lattice of YAG, which leads to a red-shift in the emission spectrum of YAG:Ce. This red-shift can make an improvement in warm white LED (light emitting diode). For OA-coated NaYFv4:Er^3+,Y^b3+ , they were firstly applied in lubricant. As mineral oil is a type of nonpolar oil, OA-coated NaYFv4:Er^3+,Yb^3+ NPs would be a potential excellent additives. In fundamental investigation, three approaches and mechanisms in modifying optical performance of RE-doped nanoparticles (NPs) were studied. They are using alternative host lattice, alternative dopants and introducing defects. Optical and tomographic imaging was used to study the effects of NPs on bio-imaging, white LED and lubricating grease. As RE-doped NPs were widely used, once engineered NPs are translocated to the food chains, they could accumulate in organisms and even cause toxicity and biomagnification. In order to investigate the effects of engineered NPs on environment, synchrotron dual-energy X-ray micro-tomography was used to study the uptake pathway, accumulation, distribution and concentration mapping of the engineered NPs in an essential component of ecosystems, the plants

Synthesis, Characterization and Applications of Rare-Earth-Element-Doped Nanoparticles

With the excellent optical performance, the rare-earth-element-doped (RE-doped) nanomaterials have been widely applied in biological system and optical engineering. The understanding about effects of rare earth elements on optical properties needs to be further achieved. In the present research, a new approach has been developed to control the morphology and modify the optical performance of engineered RE-doped nanomaterials. Experimental approaches contain synthesis, characterization, and optical and tomographic imaging investigation of nanomaterials: morphology-controlled yttrium oxide doped with erbium and ytterbium (Yv2Ov3:Er^3+,Yb^3+), hydrogen-treated aluminum yttrium oxide (Yv3Al5Ov12 or YAG) doped with cerium (YAG:Ce^3+), and oleic acid coated sodium yttrium fluoride (OA-NaYF4:Er^3+,Yb^3+). The morphology of Yv2Ov3:Er^3+,Yb^3+ were controlled by introducing metal ions during facile hydrothermal synthesis. It was found that the negatively charged aluminum complex ions enabled the evolution of nanotubes through rolling from nanosheets. The positively charged calcium complex ions prohibited the rolling of nanosheets. For hydrogen-treated YAG:Ce^3+, the hydrogenation has been firstly used to induce the defects into the host lattice of YAG, which leads to a red-shift in the emission spectrum of YAG:Ce. This red-shift can make an improvement in warm white LED (light emitting diode). For OA-coated NaYFv4:Er^3+,Y^b3+ , they were firstly applied in lubricant. As mineral oil is a type of nonpolar oil, OA-coated NaYFv4:Er^3+,Yb^3+ NPs would be a potential excellent additives. In fundamental investigation, three approaches and mechanisms in modifying optical performance of RE-doped nanoparticles (NPs) were studied. They are using alternative host lattice, alternative dopants and introducing defects. Optical and tomographic imaging was used to study the effects of NPs on bio-imaging, white LED and lubricating grease. As RE-doped NPs were widely used, once engineered NPs are translocated to the food chains, they could accumulate in organisms and even cause toxicity and biomagnification. In order to investigate the effects of engineered NPs on environment, synchrotron dual-energy X-ray micro-tomography was used to study the uptake pathway, accumulation, distribution and concentration mapping of the engineered NPs in an essential component of ecosystems, the plants

Fuzzy Determination of Target Shifting Time and Torque Control of Shifting Phase for Dry Dual Clutch Transmission

Based on the independently developed five-speed dry dual clutch transmission (DDCT), the paper proposes the torque coordinating control strategy between engine and two clutches, which obtains engine speed and clutch transferred torque in the shifting process, adequately reflecting the driver intention and improving the shifting quality. Five-degree-of-freedom (DOF) shifting dynamics model of DDCT with single intermediate shaft is firstly established according to its physical characteristics. Then the quantitative control objectives of the shifting process are presented. The fuzzy decision of shifting time and the model-based torque coordinating control strategy are proposed and also verified by simulating under different driving intentions in up-/downshifting processes with the DCT model established on the MATLAB/Simulink. Simulation results validate that the shifting control algorithm proposed in this paper can not only meet the shifting quality requirements, but also adapt to the various shifting intentions, having a strong robustness

MiR-379 inhibits proliferation and induces apoptosis in multiple myeloma by targeting Y-box binding protein 1

Purpose: To determine the effect of miR-379 in multiple myeloma.Methods: Quantitative reverse transcription-polymerase chain reaction (qRT-PCR) was used to evaluate the expression of miR-379 in multiple myeloma cells. The effect of miR-379 on multiple myeloma progression was investigated by cell counting, bromodeoxyuridine staining, flow cytometry and Western blot analysis. A potential target for miR-379 was determined using a luciferase reporter assay.Results: MiR-379 expression was reduced in multiple myeloma cells, while over-expression of miR-379 increased both cell viability and proliferation of these cells (p < 0.05). Moreover, miR-379 blocked cell cycle multiple myeloma cells and promoted apoptosis by decreasing Bcl-2 expression, and increasing the expression of cleaved caspase-3 and Bax. MiR-379 bound to Y-box binding protein 1 (YBX1) and reduced YBX1 mRNA and protein expression in multiple myeloma cells (p < 0.05).Conclusion: A YBX1-mediated tumor-suppressive role for miR-379 in multiple myeloma cells has been identified, suggesting a potential strategy for the treatment of multiple myeloma. Keywords: MiR-379, Y-box binding protein 1, Multiple myeloma, Proliferation, Apoptosi

Tizoxanide pyridine monosolvate

In the title compound [systematic name: 2-hy­droxy-N-(5-nitro-1,3-thia­zol-2-yl)benzamide pyridine monosolvate], C10H7N3O4S·C5H5N, the dihedral angle between the pyridine and benzamide rings is 80.55 (7)°. An intamolecular O—H⋯N hydrogen bond occurs in the tizoxanide. In the crystal, the components are linked by an O–H⋯N hydrogen bond, forming a zigzag chain along the c axis. Aromatic π–π inter­actions between inversion-related pyridine rings [centroid–centroid distance = 3.803 (6) Å] are also observed

Solution Deposition of Conformal Gold Coatings on Knitted Fabric for E-Textiles and Electroluminescent Clothing

The vision for wearable electronics involves creating an imperceptible boundary between humans and devices. Integrating electronic devices into clothing represents an important path to this vision; however, combining conductive materials with textiles is challenging due to the porous structure of knitted textiles. Stretchability depends on maintaining the void structure between the yarns of the fabric; filling these voids with conductive materials stiffens the textile and can lead to detrimental cracking. The authors demonstrate the solution-based metallization of a knitted textile that conformally coats individual fibers with gold, leaving the void structure intact. The resulting gold-coated textile is highly conductive, with a sheet resistance of 1.07 Wsq-1in the course direction. The resistance decreases by 80% when the fabric is stretched to 15% strain, and remains at this value to 160% strain. This outstanding combination of stretchability and conductivity is accompanied by durability to wearing, sweating, and washing. Low-cost screen printing of a wax resist is demonstrated to produce patterned gold textiles suitable for electrically connecting discrete devices in clothing. The fabrication of electroluminescent fabric by depositing layers of device materials onto the gold-coated textile is furthermore demonstrated, intimately merging device functionality with textiles for imperceptible wearable devices

A double salt of iodo­bis­muthate: cis-aqua­iodidobis(1,10-phenanthroline)cobalt(II) tris­(1,10-phenanthroline)cobalt(II) trans-hexa-μ2-iodido-hexa­iodidotribismuthate(III)

In the title complex, [Co(C12H8N2)3][CoI(C12H8N2)2(H2O)][Bi3I12], conventionally abbreviated [Co(phen)3][CoI(phen)2(H2O)][Bi3I12], where phen is 1,10-phenanthroline, the CoII atom in one cation is coordinated by six N atoms from three phen ligands in an octa­hedral coordination while the CoII atom in the other cation is coordinated octa­hedrally by four N atoms from two phen ligands, one water O atom and one I atom. In the anion, three BiIII ions adopt an octa­hedral coordination constructed by six I− ligands. The three BiI6 octa­hedra are fused together through trans face-sharing