<正> A series of novel β-cyclodextrin polymers was synthesized by immobilization of β-cyclodextrin on the chloromethylated crosslinked polystyrene carriers. The synthetic conditions such as reaction time, temp...<正> A series of novel β-cyclodextrin polymers was synthesized by immobilization of β-cyclodextrin on the chloromethylated crosslinked polystyrene carriers. The synthetic conditions such as reaction time, temperature, molar feeding ratio of reactants, the degree of crosslinking of polystyrene and the catalysts used were studied in detail and the chemical and physical structures of the formed β-CDpolymers were characterized. Results show that the preparation method is simple and the amount of β-CD immobilized is high. As biomedical adsorbents, they were tested for removal of various endogenous and exogenous toxins such as phenols, aromatic amins, barbitals and unconjugated bilirubin. Results indicate that the adsorptión capacity for those toxins can be enhanced by the inclusion interaction among the β-CD, the substrate molecules and the β-CD polymers.展开更多
Opened to traffic in August 2004,the RionAntirion Bridge crosses the Gulf of Corinth near Patras in western Greece.It consists of an impressive multi cablestayed span bridge connected to the land by two approaches.An ...Opened to traffic in August 2004,the RionAntirion Bridge crosses the Gulf of Corinth near Patras in western Greece.It consists of an impressive multi cablestayed span bridge connected to the land by two approaches.An exceptional combination of physical conditions made this project quite unusual:high water depth,deep strata of weak soil,strong seismic activity and fault displacements.In addition a risk of heavy ship collision had to be taken into account.The structure has been designed in view of challenging severe earthquakes and ensuring the everyday serviceability of the link as well.To make the bridge feasible,innovative techniques had to be developed:The strength of the in situ soil has been improved by means of inclusions;the bridge deck has been suspended on its full length,and therefore isolated as much as it can be.展开更多
文摘<正> A series of novel β-cyclodextrin polymers was synthesized by immobilization of β-cyclodextrin on the chloromethylated crosslinked polystyrene carriers. The synthetic conditions such as reaction time, temperature, molar feeding ratio of reactants, the degree of crosslinking of polystyrene and the catalysts used were studied in detail and the chemical and physical structures of the formed β-CDpolymers were characterized. Results show that the preparation method is simple and the amount of β-CD immobilized is high. As biomedical adsorbents, they were tested for removal of various endogenous and exogenous toxins such as phenols, aromatic amins, barbitals and unconjugated bilirubin. Results indicate that the adsorptión capacity for those toxins can be enhanced by the inclusion interaction among the β-CD, the substrate molecules and the β-CD polymers.
文摘Opened to traffic in August 2004,the RionAntirion Bridge crosses the Gulf of Corinth near Patras in western Greece.It consists of an impressive multi cablestayed span bridge connected to the land by two approaches.An exceptional combination of physical conditions made this project quite unusual:high water depth,deep strata of weak soil,strong seismic activity and fault displacements.In addition a risk of heavy ship collision had to be taken into account.The structure has been designed in view of challenging severe earthquakes and ensuring the everyday serviceability of the link as well.To make the bridge feasible,innovative techniques had to be developed:The strength of the in situ soil has been improved by means of inclusions;the bridge deck has been suspended on its full length,and therefore isolated as much as it can be.
