The administration of drugs via the buccal route has attracted much attention in recent years.However,the development of delivery systems that adhere well in moist conditions while releasing drugs successfully across ...The administration of drugs via the buccal route has attracted much attention in recent years.However,the development of delivery systems that adhere well in moist conditions while releasing drugs successfully across the buccal mucosa remains challenging[1].Currently,the gold standard for determining buccal drug permeability is the vertical Franz diffusion cell(FDC),which is using freshly excised tissue[2].展开更多
对传统的DCS与新型的FCS进行了比较,阐述了FCS与DCS相结合的控制系统,称之为FDCS,并将其应用在火电厂烟气脱硫过程控制系统中。还阐述了该控制系统的特点和优越性。探讨了S7-300和PROF IBU S-DP在烟气脱硫工程中的具体应用。解决了液位...对传统的DCS与新型的FCS进行了比较,阐述了FCS与DCS相结合的控制系统,称之为FDCS,并将其应用在火电厂烟气脱硫过程控制系统中。还阐述了该控制系统的特点和优越性。探讨了S7-300和PROF IBU S-DP在烟气脱硫工程中的具体应用。解决了液位控制易失灵、pH值难控制等问题,提高了系统的稳定性,保证了脱硫效率,降低了综合投资成本。展开更多
文摘铁蛋白是生物体内的球形铁储存蛋白,由两种类型的24个亚基组合而成。它们自然地自动组装成一个球形中空纳米笼,外径为12 nm,内腔直径为8 nm。近年来,随着安全性问题的不断出现,传统纳米药物的均一性差、体内行为不确定等问题日益受到关注。天然铁蛋白纳米笼的独特结构、良好的安全性、易于修饰和明确的体内行为等特点,使得基于铁蛋白药物载体(Ferritin Drug Carrier,FDC)的纳米药物制剂成为纳米药物开发的独特热点。本文综述了铁蛋白药物载体发展历程、铁蛋白载药方法以及对不同类型癌症的治疗效果,铁蛋白在一系列属性上表现出优越性,可能是癌症靶向治疗的新方向。
文摘The administration of drugs via the buccal route has attracted much attention in recent years.However,the development of delivery systems that adhere well in moist conditions while releasing drugs successfully across the buccal mucosa remains challenging[1].Currently,the gold standard for determining buccal drug permeability is the vertical Franz diffusion cell(FDC),which is using freshly excised tissue[2].
文摘对传统的DCS与新型的FCS进行了比较,阐述了FCS与DCS相结合的控制系统,称之为FDCS,并将其应用在火电厂烟气脱硫过程控制系统中。还阐述了该控制系统的特点和优越性。探讨了S7-300和PROF IBU S-DP在烟气脱硫工程中的具体应用。解决了液位控制易失灵、pH值难控制等问题,提高了系统的稳定性,保证了脱硫效率,降低了综合投资成本。
