Highly thermostable white-emitting CaZnK(PO):Ce,Dy single-phase phosphor with tunable photoluminescence and energy transfer.

White light-emitting diodes (WLEDs) fabricated with single-phase white phosphor are currently widely used in lighting and displays. Herein, we describe the development of a single-component white-emitting micro-sized powder CaZnK(PO) (CZKP):Ce,Dy with high thermal stability. Theoretical and experimental investigations confirmed that the phosphate CZKP with a whitlockite-like structure was suitable as a phosphor host.

Effects of epithelial cell injury of the lower respiratory tract in the pathogenesis of allergic responses in a rat model.

Background: Asthma is a complex disease involving genetic and environment interactions. Atopy is a strong risk factor for asthma. The airway epithelium not only forms a physical barrier but also provides immune defense against harmful materials.

Involvement of TLR2 and TLR4 and Th1/Th2 shift in inflammatory responses induced by fine ambient particulate matter in mice.

Epidemiologic studies have reported the association between fine particles (aerodynamic diameter ≤ 2.5 μm; PM2.5) and health effects, but the immunological mechanisms are not clear.