抗胞内菌感染纳米药物研究进展

纳米技术所制备的纳米抗菌药物可有效改善药物胞内转运能力,为提高胞内菌感染的治疗提供新的策略。本文通过总结常见兼性或专性胞内菌的感染以及纳米抗菌药物治疗胞内菌感染的现状,讨论并分析纳米抗菌药物在兽医临床上治疗胞内菌感染所面临的挑战,并展望纳米抗菌药物在治疗胞内感染性疾病的应用前景。     

Developing UV-protective textiles based on electrospun zinc oxide nanocomposite fibers

This research investigates applying zinc oxide nanoparticles to polypropylene nonwoven fabrics via electrospinning for the development of UV-protective materials. Layered fabric systems with electrospun zinc oxide nanocomposite fiber webs were developed at various concentrations of zinc oxide in a range of web area densities. The effects of zinc oxide concentration and web area density on the UV-protective properties of layered fabric systems were examined. Air and moisture vapor transport properties of layered fabric systems were assessed to examine the effect of electrospun web layers on thermal comfort properties of the material. A very thin layer of electrospun zinc oxide nanocomposite fibers significantly increased the UV blocking for both UV-A and UV-B ranges, and exhibited an ultraviolet protection factor (UPF) of greater than 40, indicating excellent UV protection. UV-protective properties of layered fabric systems increased with increasing zinc oxide concentrations of the nanocomposite fiber web. Increasing the electrospun web area density of the zinc oxide nanocomposite fiber web also enhanced UV-protective properties of layered fabric systems. Air and moisture vapor transport properties of layered fabric systems decreased as the electrospun web area density increased for the range of web area densities examined.     

纳米技术在精准农业中的应用研究进展

纳米技术在农药、化肥缓释与精准输送、病虫害防治、植物生长发育、农产品质量安全检测和农产品加工等方面的成功应用，对实现尽可能地从现有资源中获取最大农业产出，缓解全球资源日趋紧张和人口不断增长带来的压力，进而推动精准农业的发展意义深远。纳米技术虽为发展精准农业提供了新路径，但研发的同时，仍需注意纳米技术的安全性，尤其是纳米材料的毒性。