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In this paper-we describe a comternient method for the synthesis of 3,6-diphenyl-5-phenylamino-1. ,2 ,4-triazines in good yields. The un-reported triazines were identified by elemental analysis, infrared and mass spectra. 相似文献
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研究以AFB1-BSA免疫的小鼠脾脏细胞为试验材料,利用RT-PCR技术,克隆了抗AFB1抗体重链和轻链可变区基因VH和VL,利用连接肽(Gly4Ser)3将VH和VL链接成单链抗体基因scFv,通过噬菌体展示载体pCANTAB-5E携带将其电转化E.coli TG1,经氨苄青霉素平板筛选,构建了库容为2.13×109 cfu/μg DNA的噬菌体单链抗体库,抗体库的克隆阳性率达到100%,且多样性良好,为高活性抗AFB1单链抗体的筛选提供了材料基础。 相似文献
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In this paper, we synthesized nineteen substituent 1-(o-chloro-benzoyl)-3-(phenyl) thiourea derivatives and studied their structure activity relationship, We found that the compounds with electron-withdrawing group (F) would have higher insecticidal activity. 相似文献
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In this paper, we synthesized nineteen substituent 1-(o-chloro-benzoyl)-3-(phenyl) thiourea derivatives and studied their structure activity relationship, We found that the compounds with electron-withdrawing group (F) would have higher insecticidal activity. 相似文献
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阐述光纤的损耗特性,分析光纤在HFC网络中各个节点产生损耗的原因,总结光缆设计、铺设,熔接、维护工作中减少光缆损耗的办法,便于在光缆设计,铺设、熔接、维护过程中减少光纤的损耗,降低有线电视光传输同络的故障率,加快有线电视网络的发展步伐。 相似文献
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应用铁素体区热轧工艺开发超低碳热轧深冲板 总被引:6,自引:2,他引:6
研究了铁素体轧制工艺条件对一种Ti-IF钢的性能,特别是深冲性能的影响.采用铁素体区润滑轧制和高温卷取,r值最高为1.38,延伸率达到50%以上.而奥氏体轧制条件下r值低于1.0.织构分析证实在润滑轧制条件下,强的{111}再结晶织构沿厚度方向较均匀分布,剪切织构较弱,而在无润滑轧制条件下,{111}再结晶织构很弱,并且形成了较强的{110}剪切织构.为获得具有良好深冲性能的热轧板,要求加热温度在1 100-1 150℃之间,终轧温度在750-800℃之间, 卷取温度大于650℃. 相似文献
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