利用2006年1月～2009年4月间的高频地波雷达观测分析了台湾海峡南部浅滩以西区域表层海流的季节与年际变化特征.结果表明,台湾浅滩西侧水道的表层海流主要由明显的季节波动分量和相对稳定的北向常流两部分组成.受季风的影响,表层顺岸流速的周年变化与风速之间存在明显的线性关系.在季节信号的背后则存在一支大约10 cm/s量级的稳定的北向常流.观测还表明,研究海域表层海流有明显的年际差异,2007/2008年冬季表层南向流明显比其他年份增强.锚系海床基ADCP海流剖面观测亦表明该年冬季台湾海峡西侧顺岸流与2006/2007年冬季不同,北向流明显减弱,各观测水层多为南向流,年际差异贯穿整个水柱.同期的水文观测表明闽浙沿岸水的大规模南侵是造成上述年际差异的直接原因.2007/2008年La Ni a事件导致东亚冬季风增强应是造成研究海域冬季流场异常的主因.
Molecularly imprinted polymers(MIPs) are artificial, template-made receptors with the ability to recognize and to specially bind the target molecule. The advantage of stability of the polymer, ease of the preparation ...
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Molecularly imprinted polymers(MIPs) are artificial, template-made receptors with the ability to recognize and to specially bind the target molecule. The advantage of stability of the polymer, ease of the preparation and low cost of these MIPs have led to their assessment as substitutes for antibodies or enzymes in chemical sensors, catalysis and separations. Although creating a MIPs against small molecules is straightforward now, imprinting of large structures, such as proteins and other biomacromolecules, is still a challenge. The major problem associated with the imprinting of such large structures lies on the restricted mobility of them within highly cross-linked polymer networks and the poor efficiency in rebinding. In this paper, we present a technique for the preparation of polymer nanowires with the protein molecule imprinted and binding sites on surface. These surface imprinting nanowires exhibit highly selective recognition for a variety of template proteins, including albumin, hemoglobin and cytochrome c. Since the protein imprinted sites are located on, or close to, the surface, these imprinted nanowires have a good site accessibility towards the target protein molecules. Furthermore, the large surface area of the nanowires results in larger protein molecules binding capacity of the imprinted nanowires compared to previously report surface imprinting MIPs.
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