黄孢原毛平革菌胞外过氧化物酶系的固定化及性质研究   总被引：1，自引：0，他引：1  

刘东华  张朝晖  吴叶明 《科技通报》2009,25(1)

通过共价结合法将木素过氧化物酶(Lip)与锰过氧化物酶(Mnp)固定于聚氨酯泡沫上.固定化酶的Lip与Mnp活力分别为1.45 U/g(泡沫干重)和0.49 U/g(泡沫干重),酶活回收率分别达到34.79%和27.78%.固定化酶Lip和Mnp热稳定性提高,在温度达到50℃时酶活损失均少于20%.与游离酶相比,固定化酶稳定的pH范围前后都扩大了0.5个单位.固定化酶重复利用性好,连续使用6次,酶活力损失少于3%.  相似文献   

煤矿无线瓦斯监测仪设计     

吴叶明 《科技风》2013,(19)

煤矿井下环境复杂多变,为了更加灵活的实现瓦斯监测目的,本文设计了一种无线瓦斯监测仪。监测仪由数据采集单元、处理器单元、无线通信单元和能量供应管理单元组成。本监测仪能够适用于现有井下环境,更好地保证瓦斯数据监测的正确性和准确性。  相似文献   

Reviewing the Model of Communicative Competence in English Teaching     

杨丽冬  吴叶明 《海外英语》2013,(4X):267-268

English communicative competence is growingly important,however,many college graduates can’t communicate smoothly in English.Therefore,the English teacher is supposed to know clearly what abilities English communicative competence should contain,namely:what ability a person needs to be able to use English to communicate effectively.To that end,a large number of relevant literatures is carefully read;the evolution of English communicative competence model is reviewed;and then an English communicative competence model,inclusive,open-ended and dynamic,is put forward to guide English teaching and learning.  相似文献