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| 1 | Antibacterial Effects of Chinese Herbal Medicines against Streptococcus iniae in Oreochromis niloticus显示文摘In this study,the antibacterial effects of Chinese herbal medicines against Streptococcus iniae in Oreochromis niloticus were investigated by drug sensitivity test. The results indicated that Streptococcus iniae was extremely sensitive to Galla Chinensis,Fructus Hippophae and Fructus Mume,highly sensitive to Sappan Lignum,Pericarpium Granati,Folium Eucalypti and Radix Scutellariae,moderately sensitive to Rhizoma Coptidis,Radix et Rhizoma Rhei,Flos Caryophyllata,Cortex phellodendri and Rabdosia serra( Maxim.) Hara,and insensitive to Herba Portulacae,Herba Houttuyniae,Polygonum hydropiper L.,Herba Menthae,Radix Glycyrrhizae,Pericarpium Citri Reticulatae,Herba Andrographitis and Rhizoma Acori Tatarinowii. Chinese medicinal herbs which Streptococcus iniae was extremely sensitive or moderately sensitive to were selected and prepared into three Chinese herbal medicine formulae for medicated bath of Oreochromis niloticus infected artificially with Streptococcus iniae. The results showed that medicated bath elicited therapeutic effects on infected Oreochromis niloticus. Formula II exhibited the best therapeutic effect with an effective percentage of 90%. | Guisheng GAO Yanying ZHANG Yongmei SU Qiumei SHI Guangping GAO Yating BAI Hongsheng HAN Jianxin ZHU Qingchun SONG Guanglian REN | 2016 | Agricultural Biotechnology2016，5，1： | 2 |
| 2 | Measurement of air exchange rates in different indoor environments using continuous CO_2 sensors显示文摘A new air exchange rate(AER) monitoring method using continuous CO 2 sensors was developed and validated through both laboratory experiments and field studies.Controlled laboratory simulation tests were conducted in a 1-m 3 environmental chamber at different AERs(0.1-10.0 hr 1).AERs were determined using the decay method based on box model assumptions.Field tests were conducted in classrooms,dormitories,meeting rooms and apartments during 2-5 weekdays using CO 2 sensors coupled with data loggers.Indoor temperature,relative humidity(RH),and CO 2 concentrations were continuously monitored while outdoor parameters combined with on-site climate conditions were recorded.Statistical results indicated that good laboratory performance was achieved:duplicate precision was within 10%,and the measured AERs were 90%-120% of the real AERs.Average AERs were 1.22,1.37,1.10,1.91 and 0.73 hr 1 in dormitories,air-conditioned classrooms,classrooms with an air circulation cooling system,reading rooms,and meeting rooms,respectively.In an elderly particulate matter exposure study,all the homes had AER values ranging from 0.29 to 3.46 hr 1 in fall,and 0.12 to 1.39 hr 1 in winter with a median AER of 1.15. | Yan You Can Niu Jian Zhou Yating Liu Zhipeng Bai Jiefeng Zhang Fei He Nan Zhang | 2012 | Journal of Environmental Sciences2012，24，4： | 2 |
| 3 | Epidemiological survey and genetic characterization of type 3 vaccine-derived poliovirus isolated from a patient with four doses of inactivated polio vaccine in Henan Province,China显示文摘Background:Vaccine-derived poliovirus(VDPV)is a potential threat to polio eradication because they can reintroduce into the general population and cause paralytic polio outbreaks,a phenomenon that has recently emerged as a prominent public health concern at the end of global polio eradication.This study aimed to describe the epidemiology and genetic characteristics of the frst VDPV identifed from a patient with acute faccid paralysis(AFP),with four doses of inactivated polio vaccine immunization in Henan Province,China in 2017.Methods:The patient was diagnosed with type 3 VDPV.Subsequently,a series of epidemiological approaches was implemented,including a retrospective search of AFP cases,rate of vaccination assessment,study of contacts,and supplementary immunization activities.Fecal samples were collected,viral isolation was performed,and the viral isolates were characterized using full-length genomic sequencing and bioinformatic analysis.Results:Phylogenetic analysis showed that the viral isolates from the patient were diferent from other reported genetic clusters of type 3 VDPV worldwide.They were identifed as a Sabin 3/Sabin 1 recombinant VDPV with a crossover site in the P2 region.Nucleotide substitutions,including U→C(472)and C→U(2493),have been identifed,both of which are frequently observed as reversion mutations in neurovirulent type 3 poliovirus.A unique aspect of this case is that the patient had been vaccinated with four doses of inactive polio vaccine,and the serum neutralizing antibody for Sabin types 1 and 3 were 1∶16 and 1∶512,respectively.Thus,the patient was speculated to have been infected with type 3 VDPV,and the virus continued to replicate and be excreted for at least 41 d.Conclusions:The existence of this kind of virus in human population is a serious risk and poses a severe challenge in maintaining a polio-free status in China.To the best of our knowledge,this is the frst report of VDPV identifed in the Henan province of China.Our results highlight the importance of maintaining a high-level vaccination rate and highly sensitive AFP case surveillance system in intercepting VDPV transmission. | Mingyu Zhang Jianhui Yang Yiran Bai Hui Zhu Changshuang Wang Lu Zhang Jin Xu Mingxia Lu Xiaoxiao Zhang Zhanpei Xiao Yating Ma Yan Wang Xiaolei Li Dongyan Wang Shuangli Zhu Dongmei Yan Wenbo Xu Yong Zhang Yanyang Zhang | 2022 | Infectious Diseases of Poverty2022，11，6： | 0 |
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