光学显微镜和扫描电镜下的星肋小环藻(新种)的研究     

谢淑琦  林碧琴  蔡石勋 《中国科学院研究生院学报》1985,23(6):473-475

A new diatom species, Cyclotella asterocostata is described in the paper. The species was collected from Miyan Reservoir in Beijing, Tangshan in Hebei, Shanyang in Liaoning, Suzhou in Jiangsu, Guilin in Guangxi.  It is characterized by a wide marginal region, with the width of the marginal region about half of the valve radius.  There are radiate rows of costa alternate with alveola on the surface of valve central region and marginal one.  The species has not an isolated punctum, but has some scattered puncta, on the surface of valve central region.  相似文献   

技校英语教学中实施分层教学的思考和探究     

林碧琴 《中国科教创新导刊》2010,(14):58-58

由于技校学生英语水平和基础的差异,传统的统一教学目标无法使英语教学达到最优效果。为了使不同层次的学生都能取得英语成绩的进步和提高,实行分层教学是重要的措施和关键。分层教学对于培养学生学习兴趣以及推动学生整体英语水平的进步有重要意义。本文将对技校英语教学中实施分层教学进行探讨,力求寻找出适合技校英语教学的最佳方案。  相似文献