Silicon: the promising material for phontonic integrated circuits platform

The development of optical network demands integrated arid multiple functionality modules to lowing cost and acquire highly reliability. Among the various contender materials to be photonic integrated circuits platform, silicon exhibits dominant characteristics and is the most promising platform materials. The paper compares the characteristics of some candidate materials with silicon and reviews recent progress in silicon based photonic integration technology. Tile challenges to silicon for optical integration for optical networking application arc also indicated.

整合素-ICAM-1相互作用的二维反应动力学研究

<正>_2整合素(LFA-1和Mac-1)与其配体细胞间粘附分子-1(ICAM-1)的相互作用在诸如肿瘤转移、炎症反应等许多病理生理过程中起着重要的作用。研究表明,中性粒细胞(PMN)在特定环境下可通过_2整合素与ICAM-1的相互作用而增强黑色素瘤细胞的转移能力,但是其动力学调控机制还不清楚。受体-配体键结合和解离的二维反应动力学定量描述了分子结合的快慢和强弱,是回答_2整合素与ICAM-1相互作用如何调

萨拉乌苏河流域mgs3地层段腹足类动物化石种类及气候环境

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