目的构建共表达羊布氏菌胞质结合蛋白P39基因和增强型绿色荧光蛋白(Enhanced green fluorescent protein,EGFP)基因的逆转录病毒质粒。方法提取羊布氏菌全基因组DNA,PCR扩增P39基因,连接至pMD19-T载体中,转化感受态大肠杆菌DH5α,经克...目的构建共表达羊布氏菌胞质结合蛋白P39基因和增强型绿色荧光蛋白(Enhanced green fluorescent protein,EGFP)基因的逆转录病毒质粒。方法提取羊布氏菌全基因组DNA,PCR扩增P39基因,连接至pMD19-T载体中,转化感受态大肠杆菌DH5α,经克隆筛选并进行序列测定后,将P39基因连接至逆转录病毒载体pRevIRES-EGFP的多克隆位点上,转化感受态大肠杆菌DH5α,提取重组逆转录病毒质粒pRevP39-IRES-EGFP,进行酶切鉴定。结果从羊布氏菌基因组中扩增出约1 400 bp的P39基因,与GenBank中登录的羊布氏菌16M菌株P39基因序列同源性达99%;重组逆转录病毒质粒pRevP39-IRES-EGFP经双酶切鉴定构建正确。结论已成功构建了共表达羊布氏菌P39基因和EGFP基因的重组逆转录病毒质粒pRevP39-IRES-EGFP,为后续研究奠定了基础。展开更多
Manual reduction, splint external fixation and rehabilitation were all applied to 18 cases with turnover type of fracture of ateralcondylar of humerus. Significant result was obtained in 9 cases, good in 6 and improve...Manual reduction, splint external fixation and rehabilitation were all applied to 18 cases with turnover type of fracture of ateralcondylar of humerus. Significant result was obtained in 9 cases, good in 6 and improved in 3, with the total effective rate being 83.33%. The follow up observation was between 1 to 5 years. The curative effect was closely related to the timely treatment, plexus brachialis block anesthesia and proper fixation.展开更多
The compression behaviour of Pd39Ni10Cu30P21 bulk metallic glass is ivestigated at room temperature up to 23.5GPa using in situ high pressure energy dispersive x-ray diffraction with a synchrotron radiation source.Pre...The compression behaviour of Pd39Ni10Cu30P21 bulk metallic glass is ivestigated at room temperature up to 23.5GPa using in situ high pressure energy dispersive x-ray diffraction with a synchrotron radiation source.Pressure induced strucural relaxation of the bulk metallic glass is exhibited within the pressure range.It is found that below about 5GPa,the existence of excess free volume contributes to rapid structural relaxation,which gives rise to rapid volumetic change.Under higher pressure,further relaxation results in structural stiffness.展开更多
文摘Manual reduction, splint external fixation and rehabilitation were all applied to 18 cases with turnover type of fracture of ateralcondylar of humerus. Significant result was obtained in 9 cases, good in 6 and improved in 3, with the total effective rate being 83.33%. The follow up observation was between 1 to 5 years. The curative effect was closely related to the timely treatment, plexus brachialis block anesthesia and proper fixation.
文摘The compression behaviour of Pd39Ni10Cu30P21 bulk metallic glass is ivestigated at room temperature up to 23.5GPa using in situ high pressure energy dispersive x-ray diffraction with a synchrotron radiation source.Pressure induced strucural relaxation of the bulk metallic glass is exhibited within the pressure range.It is found that below about 5GPa,the existence of excess free volume contributes to rapid structural relaxation,which gives rise to rapid volumetic change.Under higher pressure,further relaxation results in structural stiffness.