目的建立基于缓冲蛋白胨水(Buffer protein sputum water,BPW)培养法的沙门菌H抗原诱导方法。方法将H抗原缺失的沙门菌加入缓冲蛋白胨水中,通过培养离心收集菌体沉淀,直接用于H抗原缺失的沙门菌血清分型;未凝集样本再次以BPW培养诱导后...目的建立基于缓冲蛋白胨水(Buffer protein sputum water,BPW)培养法的沙门菌H抗原诱导方法。方法将H抗原缺失的沙门菌加入缓冲蛋白胨水中,通过培养离心收集菌体沉淀,直接用于H抗原缺失的沙门菌血清分型;未凝集样本再次以BPW培养诱导后鉴定;并同时采用软琼脂法诱导H抗原,进行2种方法的比对。结果采用BPW培养法和软琼脂法分别诱导40株H抗原缺失的沙门菌,BPW培养法诱导1、2次累计成功率分别为82.5%、100.0%;软琼脂法需1~5次诱导出H抗原,诱导1、2次累计成功率分别为20.0%、47.5%。诱导后H因子的凝集效价BPW培养法以"+++"或以上为主(占82.5%),软琼脂法以"++"或以上为主(占82.5%)。凝集时间BPW培养法<10s,软琼脂法为30~120s。结论BPW培养法诱导沙门菌H抗原速度快、凝集效果好,可用于H抗原缺失的沙门菌血清型鉴定。展开更多
The optimized molecular structure and harmonic vibrational frequencies of a 1,4-bis [ 2-（4-pyridyl）ethenyl]- benzene（BPENB） molecule were calculated via five popular density functional theory（DFI＇） methods. On ...The optimized molecular structure and harmonic vibrational frequencies of a 1,4-bis [ 2-（4-pyridyl）ethenyl]- benzene（BPENB） molecule were calculated via five popular density functional theory（DFI＇） methods. On the basis of the comparison between calculated and experimental results, it is concluded that the B3PW91 and B3LYP methods are superior to the others in optimizing structures, and the BPW91 method reproduces the observed fundamental fre-quencies most satisfactorily.展开更多
文摘目的建立基于缓冲蛋白胨水(Buffer protein sputum water,BPW)培养法的沙门菌H抗原诱导方法。方法将H抗原缺失的沙门菌加入缓冲蛋白胨水中,通过培养离心收集菌体沉淀,直接用于H抗原缺失的沙门菌血清分型;未凝集样本再次以BPW培养诱导后鉴定;并同时采用软琼脂法诱导H抗原,进行2种方法的比对。结果采用BPW培养法和软琼脂法分别诱导40株H抗原缺失的沙门菌,BPW培养法诱导1、2次累计成功率分别为82.5%、100.0%;软琼脂法需1~5次诱导出H抗原,诱导1、2次累计成功率分别为20.0%、47.5%。诱导后H因子的凝集效价BPW培养法以"+++"或以上为主(占82.5%),软琼脂法以"++"或以上为主(占82.5%)。凝集时间BPW培养法<10s,软琼脂法为30~120s。结论BPW培养法诱导沙门菌H抗原速度快、凝集效果好,可用于H抗原缺失的沙门菌血清型鉴定。
基金Supported by the National Natural Science Foundation of China(No.20473029)the Open Project Program of the Key Labora-tory for Supramolecular Structure and Materials of Ministry of EducationJilin University and the Fund for Doctor of Yantai University.
文摘The optimized molecular structure and harmonic vibrational frequencies of a 1,4-bis [ 2-（4-pyridyl）ethenyl]- benzene（BPENB） molecule were calculated via five popular density functional theory（DFI＇） methods. On the basis of the comparison between calculated and experimental results, it is concluded that the B3PW91 and B3LYP methods are superior to the others in optimizing structures, and the BPW91 method reproduces the observed fundamental fre-quencies most satisfactorily.
