PengLai Mountain

In the summer holiday my classmates and I paid a visit to Penglai Mountain, which lies in the south of our hometown, Youxi. It is about one thousand metres high. It is said that the mountain is the highest one in Youxi.Singing and laughing all the way, we arrived at the foot of the hill on the early morning. The narrow road winds around the mountain. On both sides of it, we also saw     

HPLC法测定众生片中黄芩苷的含量

目的:采用高效液相法测定众生片中黄芩苷的含量。方法:色谱柱为HypersilC18(4.6mm×200mm,5μm;流动相为甲醇-水-磷酸(45:55:0.2);流速为:1ml.min-1;检测波长为278nm.。结果:黄芩苷进样量在0.0150.15ug之间,与峰面积呈良好的线性关系(r=0.9999),平均加样回收率为96.57%,RSD=1.3%(n=5)。结论:本方法操作简单,快捷,可用于测定众生片中黄芩苷的含量。     

Penglai Mountain

One day in the summer vacation my classmates and I paid a visit to Penglai Mountain, which lies in the south of my hometown, Youxi. It is about one thousand metres far. It is said that the mountain is the highest one in Youxi.     

提高山区初中学生学习兴趣探索与实践

二十四个春秋的教海拼搏,耗尽了我美好的青春。一回首,教训如重峦叠嶂,经验嘛,却象笔尖上的墨水,只有点滴。在这漫长的岁月里,使我体会最深的一点是:要教好学生,必须注意培养学生的学习兴趣和良好的学习方法,再辅以教师正确的辅导。在全面实施素质教育的今天,只有努力提高教学质量,才能使受教育者既能掌握“双基”知识,又能充分发展智力和提高语文能力。然而,多数山区学生知识基础差,学习条件差,又没有良好的学习习惯。怎样来弥补上述不足,提高教学质量呢?我在语文教学中做了如下探讨,取得了一定的成效。一、培养学习兴趣及主动性学生进入初…     

对初中几何专题复习的探讨

通常,中考复习的黄金方案是“三轮复习”,第一轮复习往往是模清初中数学内容的脉络,理解与掌握基础知识;第二轮复习往往是实现知识点综合、归纳、糅合,常分专题进行讲解,总结每一种类型题目的常用方法;第三轮复习往往就是回扣教材,查漏补缺,强化训练。