Synthesis and photoluminescent properties of NaYF4:Eu3+ core and NaYF4:Eu3+/NaYF4 core/shell nanocrystals.

NaYF4:Eu3+ core and NaYF4:Eu3+/NaYF4 core/shell nanocrystals (NCs) were synthesized via a wet chemical method. The transmission electron microscope photographs show that the core and core/shell nanoparticles are monodisperse and uniform NCs with average diameters of 22 and 26 nm respectively. The photoluminescence (PL) properties of the samples, including the PL excitation and emission spectra, and luminescent decay curves, are investigated in detail.

[Expressions and significance of IL-17 and IL-23 in intestinal mucosa of mice infected with Blastocystis hominis].

Objective: To study the expressions of interleukin-17 (IL-17) and interleukin-23 (IL-23) in the intestinal mucosa of BABL/C mice infected with Blastocystis hominis.

Methods: A total of 30 BABL/C mice were randomly divided into different groups: an experimental group, an immunosuppressant group and a normal group. Each mouse of the experimental group and immunosuppressant group was administered intraperieneally with dexamethasone (2 mg, gd, for 5 days) and one of the control group was given physiological saline (0.

Synthesis and luminescent properties of LuAG : Ce3+ transparent ceramics by solvo-thermal method.

The precursor powders of LuAG : Ce3+ transparent ceramics were synthesized by solvo-thermal method. The crystal structure and morphology of powders were analyzed by means of Fourier transform infra-red spectroscopy, X-ray diffraction and scanning electron microscopy. The precursor powders were sintered into transparent ceramics in vacuum and then in nitrogen without any additive.