河北省辣椒(Capsicum frutescens)主要出口基地辣椒病毒病毒源种类鉴定——1.Ⅰ—17、Ⅱ—44、Ⅲ—59和Ⅳ—34分离物的鉴定

从辣椒上分离到的Ⅰ—17、Ⅱ—44、Ⅲ—59、和Ⅳ—34四个病毒分离物,根据其病毒形态、大小、血清反应、蚜虫传毒特性、体外稳定性、寄主范围和症状特点,Ⅰ—17、Ⅱ—44和Ⅲ—59分离物鉴定为黄瓜花叶病毒(CMV)的三个不同分离物,Ⅳ—34鉴定为烟草花叶病毒(CMV)。CMVⅠ—17、Ⅱ—44和Ⅲ—59三个分离物的病毒形态为球状,直径约28nm,免疫琼脂双向扩散试验结果:它们与 CMV 有密切的亲缘关系,三个分离物均由棉蚜、桃蚜以非持久性方式传播;钝化温度:Ⅰ—17为55—60℃,Ⅱ—44为66—70℃,Ⅲ—59为60—65℃,三个分离物的稀释限点均为10^(-4)—10^(-5),体外保毒期均为5天;在辣椒、黄瓜、心叶烟和普通烟等寄主上引起系统花叶,在奎宁藜、豇豆、蚕豆等植物上引起局部枯斑,不侵染十字花科植物。Ⅰ—17、Ⅱ—44和Ⅲ—59三个分离物在心叶烟、黄花烟、普通烟、蚕豆、蕃茄、曼陀罗等寄主上的侵染性及症状反应不同,在不同辣椒(甜椒)品种上的症状反应也存在差异。TMVⅣ—34分离物病毒粒子形态为直杆状,大小约为300×18nm,免疫琼脂双向扩散试验表明它与烟草花叶病毒(TMV)存在亲缘关系;不能由蚜虫传毒,致死温度为95°—100℃,稀释限点为10^(-10)—10^(-11),体外保毒期2个月以上;在普通烟、毛叶烟、三生烟、辣椒、蕃茄等寄主上表现系统花叶,在心叶烟、曼陀罗、奎宁藜、黄色藜、枯斑三生烟等寄主上引起枯斑症状,不侵染黄瓜和蚕豆等植物。

非淋菌性尿道炎患者单纯疱疹病毒感染的研究

目的 研究非淋菌性尿道炎患者单纯疱疹病毒的感染情况。方法 采用聚合酶链反应法对NGU患者组15 6例及对照组 6 0例进行HSV检测。结果 NGU患者组HSV阳性率为 2 1 79% ,对照组阳性率为 5 0 0 % ,患者组与对照组比较差异有显著性意义 (χ2 =8.6 1,P >0 0 0 5 )。结论 HSV是NGU的重要病原体之一 。

Exploration of Infection Prevention and Control Practice of Designated Hospitals in During Corona Virus Disease 2019 Epidemic Period

Corona Virus Disease 2019(COVID-19)is a new infectious disease that appeared in whan in December 2019 Since January23,the national health and fitmess commission has required hospitals to be designated in accordance with the principle of"concentrating patients,experts,resources and treatment".Designated hospitals are often the strength of the general hospital and general hospital complex layers of various kinds of personnel,campus area is large,multi-channel,ordinary outpatient accepts people more,for emergency and severe cases treatment in patients with normal difficulty pressuure big,suspected/confirmed cases,combined with the COVID-19 occurred when the traditional holiday,the country launched the emergency response since,process reform faces a difficult labor,shortage of mampower,protective shortages,short time limit,and many other difficulties,hospital infection prevention and control is facing unprecedented pressure.In this paper,the West China-Guang'an Hospital,Sichuan University(Guang'an people's hospital)as a designated hospital,on the basis of the relevant scheme of the national health committee,epidemic prevention and control of the actual,combined with comprehensive hospital leadership,mampower allocation,protection,security,patient management,disinfection isolation,preview triage,preventive measures,training,monitoring,etc.,with practical experience summary for the COVID-19 diring the hospital infection prevention and control to improve the practice exploration.

开放教育“VIU在线学习空间”构建探索

文章利用演绎法对世界先进开放大学在线学习支持服务系统进行研究,探索其普遍性规律,并结合贵州开放教育在线学习平台的现状,将这些规律推演利用到本地在线学习支持服务系统建设中,并提出了'VIU在线学习空间'(VIU-Online Learning Space)的构建思路、要实现的功能和具体技术设计。