用7种有代表性物质在广域温度和压力范围内的液体物性实验值，对2个不同程度上修正的van der Waals模型进行比较和评价，结果表明，从统计力学出，进一步引入Lennard-Jones位能函数对内压项进行修正的 vaa der Waals模型，较仅对已占体积项进行修正的van der Waals模型明显更优。
On the basis of low density lipoprotein (LDL) adsorption on matrix-bound tryptophan,a new LDL adsorbent was prepared with indole-3-acetic acid (IAA) as a ligand,which had indole group in its chemical structure just as tryptophan. Macroporous polyvinyl alcohol (PVA) beads were obtained by suspension copolymerization of vinyl acetate and triallyl isocyanurate in the presence of porogen,followed by subsequent alcoholysis step. The PVA beads were allowed to react with epichlorohydrin,and the thus obtained epoxidized beads were then reacted with several polyamines to introduce space arms with different lengths. IAA was then coupled to the spacer-attaching beads by using DCC/HOBt method employed usually in polypeptide synthesis. The primary in vitro adsorption tests show that the resultant adsorbents provide a satisfactory binding capacity for LDL,and manifest much larger capacity than the adsorbent prepared by direct immobilization of tryptophan on the epoxy-activated PVA beads. This proves that indole groups do play an important part in binding LDL. [WT5HZ]
