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Lead halide perovskite have attracted world-wide attention regarding their serious hazards on ecological environment and human health. To improve both the emission intensity and stability of Cs 2 AgInCl 6 , this study explores using SiO 2 to structurally adjust Cs 2 AgInCl 6 . Note that including SiO 2 changed the growth style and crystal morphology of Cs 2 AgInCl 6 from an octahedron to a truncated octahedron. After structural adjustment, the unit cells scattered, and the absorption limit broke. Moreover, SiO 2 was demonstrated to passivate the material's surface to form an anti-oxidation protective layer. Consequently, the photoluminescence emission intensity increased by 181.5% and the stability of Cs 2 AgInCl 6 improved by 83.11%. This work provides a methodology and reference for future improvements to the luminescence of Cs 2 AgInCl 6 . Furthermore, a novel double-emission phenomenon (λ ex = 365 nm: λ em ≈ 580 nm; λ ex = 325 nm: λ em ≈ 505 nm) of Cs 2 AgInCl 6 at cryogenic temperatures (20 K) was discovered; this phenomenon explains the shoulder emission problem of 400-450 nm at room temperature and clarifies the luminescence mechanism of Cs 2 AgInCl 6 ., (Copyright © 2020 Elsevier B.V. All rights reserved.)

Objective: To investigate the protective effect of Dansheng injection on experimental rabbits' in spinal cord injury., Methods: Thirty-two New Zealand rabbits were impacted between T12-T1 with a force of 150 g.cm-1 (10 g x 15 cm). The rabbits were randomly divided into the injury group, monitor group, L-NAME group and Dansheng group. The blood was obtained at 0 h, 4 h, 6 h to separate the serum at the end the injured spinal cord. Cord tissues were obtained for histological examination. Methyl-di-aldehyde (MDA), superoxide dismutase (SOD) and nitro oxide (NO) from the serum and spinal tissues homogenated were tested., Results: MDA and NO increased in the injury group compared with the others, but SOD significantly decreased in the injury group compared with the others. Histological examination showed that neurons were degenerated and necrosed. The injury group displayed serious changes while the Dansheng group less changes. iNOS expressed in all the groups., Conclusion: Dansheng injection has some protective effect on spinal cord injury in the early stage.

Objective: To confirm the capability of ectopic bone induction of the bovine bone morphogenetic protein (bBMP), and investigate the bBMP combined with sintered bone (SB) in the treatment of bone defects., Methods: bBMP was separated from the bovine cortical bone and implanted into the muscle pouches of the balb/c mouses. 4 mouses were killed at the 1st, 2nd, 3rd and 4th week, and their tissues were fixed in 4% formalin for histologic examination. The bBMP was combined with sintered bovine cancellons bone (SB), and segmental defects were made at raddi in 16 New Zealand rabbits. One side of the rabbits was implanted with bBMP-SB, and another side implanted with SB. The animals were killed in the 2nd, 4th, 6th and 8th week after operation for X-ray and histologic examination., Results: One week after bBMP implantation, the chondrocyte was induced in muscle pouches, the woven bone was seen in 2 weeks, and the trabecular bone was formed in 4 weeks. In bone defects models, the X-ray and histologic examination showed that all parameters (chondrocyte induction, the mount of the trabecular bone, defects heal) were better in the animals treated with bBMP-SB than that with SB., Conclusion: 1. bBMP can induce ectopic bone formation. 2. bBMP-SB can improve the healing of the bone defects.