微RNA(microRNA,miRNA)和Piwi作用RNA(Piwi-interacting RNA,piRNA)是动物体内具有重要调控作用的两类内源小RNA分子。最近科学家相继从动物体细胞和生殖细胞中发现了一种新型内源小RNA——内源干扰小RNA(endogenous small interfering ...微RNA(microRNA,miRNA)和Piwi作用RNA(Piwi-interacting RNA,piRNA)是动物体内具有重要调控作用的两类内源小RNA分子。最近科学家相继从动物体细胞和生殖细胞中发现了一种新型内源小RNA——内源干扰小RNA(endogenous small interfering RNA,endo-siRNA)。研究表明endo-siRNA分子在结构、分布及其功能上均与miRNA和piRNA分子存在着显著的异同点。展开更多
We prepared a novel pitch-based activated carbon microsphere（ACM）and studied its in vitro adsorption characteristics for biological molecules.The original spherical asphalt particles were prepared through bitumen em...We prepared a novel pitch-based activated carbon microsphere（ACM）and studied its in vitro adsorption characteristics for biological molecules.The original spherical asphalt particles were prepared through bitumen emulsification.After oxidation and burning,ACMs with a range of parameters were prepared.In vitro adsorption experiments of ACMs for biological molecules were carried out.The prepared ACMs possessed a BET specific surface of 1566 m^2/g with a voidage of 0.653 cm^3/g and a volume of micropores of 0.478 cm^3/g.They showed high adsorption for glucose and creatintine.Compared with the medically used carbon powder,the prepared ACMs exhibited significantly lower adsorption for digestion enzymes.In conclusion,the prepared ACMs,as an oral adsorbent candidate,possessed higher BET specific surface area and larger volume of micropores;they also exhibited favorable selective adsorption features for biological molecules.展开更多
文摘微RNA(microRNA,miRNA)和Piwi作用RNA(Piwi-interacting RNA,piRNA)是动物体内具有重要调控作用的两类内源小RNA分子。最近科学家相继从动物体细胞和生殖细胞中发现了一种新型内源小RNA——内源干扰小RNA(endogenous small interfering RNA,endo-siRNA)。研究表明endo-siRNA分子在结构、分布及其功能上均与miRNA和piRNA分子存在着显著的异同点。
文摘We prepared a novel pitch-based activated carbon microsphere（ACM）and studied its in vitro adsorption characteristics for biological molecules.The original spherical asphalt particles were prepared through bitumen emulsification.After oxidation and burning,ACMs with a range of parameters were prepared.In vitro adsorption experiments of ACMs for biological molecules were carried out.The prepared ACMs possessed a BET specific surface of 1566 m^2/g with a voidage of 0.653 cm^3/g and a volume of micropores of 0.478 cm^3/g.They showed high adsorption for glucose and creatintine.Compared with the medically used carbon powder,the prepared ACMs exhibited significantly lower adsorption for digestion enzymes.In conclusion,the prepared ACMs,as an oral adsorbent candidate,possessed higher BET specific surface area and larger volume of micropores;they also exhibited favorable selective adsorption features for biological molecules.
