Polystyrene-based adsorbents incorporating several poly(α-amino acid)s have been synthesized and evaluated for the resolution of (RS)-5-isopropylhydantoin in order to elucidate the effect of side chain length of the immobilized poly(α-amino acid)s on the resolution effi...

The molecular mechanism of muscle contraction has been elucidated by a combination of electron microscopy, biochemistry and X-ray diffraction from fibres and crystals. Protein crystallography provided the essential molecular anatomy for understanding this problem. Synch...

为了探明新月形沙丘的移动规律及其与气象环境因子之间存在的相互关系，在河西绿洲边缘选取了7个典型的样点，用Goolge Earth对各个样点沙丘的形态参数进行测量，并将所得数据与气象环境因子之间进行相关性分析。结果表明：1) 受风速、大风日数等因子的影响，民勤地区沙丘移动最快，移动速度为6.2 m∙a−1，敦煌地区沙丘移动最慢，移动速度为0.8 m∙a−1河西地区平均移动速度为3.7 m∙a−1；2) 受不同气象因子的影响，与2006年相比，河西大部分新月形沙丘背风坡长度呈增加的趋势，背风坡长呈减小趋势；3) 河西地区新月形沙丘均分布在...

In a context of growing unemployment, new HRM instrumentations outside organizations boundaries appear in order to help all the socio economic actors of a determined geographical area gathering and integrating their HRM policies. However, in spite of a consensus on the ...