本文利用作者研究的26科56属63种现代花粉的测量统计资料,对醋酸酐的分解作用与花粉形状体积变化的相互关系作了一些初步的探讨。应用小样本的 t 检验方法,对醋酸酐分解前后花粉粒的大小形状差异进行分析,发现:形状变化有趋长倾向,即 P...本文利用作者研究的26科56属63种现代花粉的测量统计资料,对醋酸酐的分解作用与花粉形状体积变化的相互关系作了一些初步的探讨。应用小样本的 t 检验方法,对醋酸酐分解前后花粉粒的大小形状差异进行分析,发现:形状变化有趋长倾向,即 P/E 值增加;体积变化符合伍德豪斯效应(Wodehouse effect),即本身个体小的花粉粒体积变化小,个体大的花粉粒体积变化大。球形具散孔花粉,超长球形个体很小的花粉一般不发生明显的形状和体积的变化。具沟花粉极轴增长明显;扁球形花粉较长球形花粉变化显著。外壁厚的、纹饰粗的花粉变化较大。花粉粒形体变化是醋酸酐分解破坏花粉粒内含物引起外壁张力变化的结果。展开更多
The rate of respiratory allergic diseases is high. Statitics show that with the people in the United States, the rate of the diseases caused by pollen grains alone is as high as 10％. The rate of the asthmatic bronchi...The rate of respiratory allergic diseases is high. Statitics show that with the people in the United States, the rate of the diseases caused by pollen grains alone is as high as 10％. The rate of the asthmatic bronchitis is 5％ and it often causes complications. The health and work of people have been highly impaired. Pollen grains are the main aspiratory allergens in atmosphere. Therefore, to effectively prevent, diagnose and cure respiratory allergic diseases, we should, first of all,展开更多
文摘The rate of respiratory allergic diseases is high. Statitics show that with the people in the United States, the rate of the diseases caused by pollen grains alone is as high as 10％. The rate of the asthmatic bronchitis is 5％ and it often causes complications. The health and work of people have been highly impaired. Pollen grains are the main aspiratory allergens in atmosphere. Therefore, to effectively prevent, diagnose and cure respiratory allergic diseases, we should, first of all,
