本研究探讨不同途径给羊接种布鲁氏菌S2菌苗后抗体消长规律,以及用4种方法检测菌苗抗体结果的符合程度。选取44只在相同饲养条件下的北京土种绵羊进行单次免疫,分为注射组20只,50×108CFU/只;灌喂组24只,100×108CFU/只。在免...本研究探讨不同途径给羊接种布鲁氏菌S2菌苗后抗体消长规律,以及用4种方法检测菌苗抗体结果的符合程度。选取44只在相同饲养条件下的北京土种绵羊进行单次免疫,分为注射组20只,50×108CFU/只;灌喂组24只,100×108CFU/只。在免疫后的第3、7、13、17、21、25周采血分离血清,用虎红平板凝集试验(RBPT),试管凝集试验(SAT),微量凝集试验(MAT)和酶联免疫吸附试验(ELISA)方法,对这44份血清抗体进行检测并分析。结果显示:注射组在第7周仍能保持一定的抗体水平,直至第25周仍能检测到抗体,而灌喂组在第13周阳性率已为0。3种检测方法与ELISA比较κ值分别为:κRBPT vs ELISA=0.805,κSAT vs ELISA=0.760,κMAT vs ELISA=0.899。肌肉注射比灌喂接种方式有更高的抗体阳性率,且该抗体能维持半年。微量凝集试验与酶联免疫吸附试验抗体检测结果的一致性最高。展开更多
The epidemiology of highly pathogenic porcine reproductive and respiratory syndrome( HP-PRRS) in Changping District,Beijing City was investigated from 2010 to 2015. Through statistics of vaccine,immune procedure and a...The epidemiology of highly pathogenic porcine reproductive and respiratory syndrome( HP-PRRS) in Changping District,Beijing City was investigated from 2010 to 2015. Through statistics of vaccine,immune procedure and antibody levels,the epidemic prevention effect of HP-PRRS in Changping District was scientifically assessed.展开更多
[Objective] The paper was to verify the disinfeelion effect of ozone on livesioek and poultry houses. [Method] The empty chicken house was disinfected by ozone with the help of ozone disinfector. [Result] As the ozone...[Objective] The paper was to verify the disinfeelion effect of ozone on livesioek and poultry houses. [Method] The empty chicken house was disinfected by ozone with the help of ozone disinfector. [Result] As the ozone disinfeelor was worked for 60 min, the average sterilizing rate of air was 85.33%; Ihe average sterilizing rale on the surface of chicken coop was 86.77%; and the average sterilizing rate of wall was 89.13%. The disinfection effect was obvious. [Conclusion] The results will providc references for promotion and application of ozone disinfector in breeding in- dustry.展开更多
In the context of multivariate regular variation,the authors establish the first-order asymptotics of the spectral risk measure of portfolio loss.Furthermore,by the notion of second-order regular variation,the second-...In the context of multivariate regular variation,the authors establish the first-order asymptotics of the spectral risk measure of portfolio loss.Furthermore,by the notion of second-order regular variation,the second-order asymptotics of the spectral risk measure of portfolio loss is also presented.In order to illustrate the derived results,a numerical example with Monte Carlo simulation is carried out.展开更多
In this paper,an exponential inequality for weighted sums of identically distributed NOD （negatively orthant dependent） random variables is established,by which we obtain the almost sure convergence rate of which re...In this paper,an exponential inequality for weighted sums of identically distributed NOD （negatively orthant dependent） random variables is established,by which we obtain the almost sure convergence rate of which reaches the available one for independent random variables in terms of Berstein type inequality. As application,we obtain the relevant exponential inequality for Priestley-Chao estimator of nonparametric regression estimate under NOD samples,from which the strong consistency rate is also obtained.展开更多
基金supported by the Guangxi Natural Science Foundation(Grant No.2022GXNSFAA035516)the National Natural Science Foundation of China(Grant No.11461009)the Important Natural Science Foun-dation of Colleges and Universities of Anhui Province(Grant No.KJ2020A0122).
文摘本研究探讨不同途径给羊接种布鲁氏菌S2菌苗后抗体消长规律,以及用4种方法检测菌苗抗体结果的符合程度。选取44只在相同饲养条件下的北京土种绵羊进行单次免疫,分为注射组20只,50×108CFU/只;灌喂组24只,100×108CFU/只。在免疫后的第3、7、13、17、21、25周采血分离血清,用虎红平板凝集试验(RBPT),试管凝集试验(SAT),微量凝集试验(MAT)和酶联免疫吸附试验(ELISA)方法,对这44份血清抗体进行检测并分析。结果显示:注射组在第7周仍能保持一定的抗体水平,直至第25周仍能检测到抗体,而灌喂组在第13周阳性率已为0。3种检测方法与ELISA比较κ值分别为:κRBPT vs ELISA=0.805,κSAT vs ELISA=0.760,κMAT vs ELISA=0.899。肌肉注射比灌喂接种方式有更高的抗体阳性率,且该抗体能维持半年。微量凝集试验与酶联免疫吸附试验抗体检测结果的一致性最高。
基金Supported by National Natural Science Foundation of China(30870109)
文摘The epidemiology of highly pathogenic porcine reproductive and respiratory syndrome( HP-PRRS) in Changping District,Beijing City was investigated from 2010 to 2015. Through statistics of vaccine,immune procedure and antibody levels,the epidemic prevention effect of HP-PRRS in Changping District was scientifically assessed.
文摘[Objective] The paper was to verify the disinfeelion effect of ozone on livesioek and poultry houses. [Method] The empty chicken house was disinfected by ozone with the help of ozone disinfector. [Result] As the ozone disinfeelor was worked for 60 min, the average sterilizing rate of air was 85.33%; Ihe average sterilizing rale on the surface of chicken coop was 86.77%; and the average sterilizing rate of wall was 89.13%. The disinfection effect was obvious. [Conclusion] The results will providc references for promotion and application of ozone disinfector in breeding in- dustry.
基金supported by the Important Natural Science Foundation of Colleges and Universities of Anhui Province under Grant No.KJ2020A0122the Scientific Research Start-up Foundation of Hefei Normal University。
文摘In the context of multivariate regular variation,the authors establish the first-order asymptotics of the spectral risk measure of portfolio loss.Furthermore,by the notion of second-order regular variation,the second-order asymptotics of the spectral risk measure of portfolio loss is also presented.In order to illustrate the derived results,a numerical example with Monte Carlo simulation is carried out.
基金Supported by the National Natural Science Foundation of China ( 11061007)
文摘In this paper,an exponential inequality for weighted sums of identically distributed NOD （negatively orthant dependent） random variables is established,by which we obtain the almost sure convergence rate of which reaches the available one for independent random variables in terms of Berstein type inequality. As application,we obtain the relevant exponential inequality for Priestley-Chao estimator of nonparametric regression estimate under NOD samples,from which the strong consistency rate is also obtained.
