Anatomical societies find new ways to come together in a post-Covid world     

Rafael Boscolo-Berto  Andrea Porzionato  Carla Stecco  Veronica Macchi  Raffaele De Caro 《Anatomical sciences education》2021,14(6):739-751

The world has been turned upside down by a global health emergency caused by the Covid-19. Given the high contagiousness of the virus and the need to contain its spread, social distancing rules, self-isolation policies, and geographical lockdowns have been enforced globally. Over the pandemic emergency the majority of the planned in-person meetings and congresses of national and international anatomical societies have been postponed or canceled. It is unclear what the future holds, but times of crisis often present possibilities for re-thinking old ways to achieve a more critical approach. It has become increasingly clear that traditional in-person congress formats of scientific societies need to be reevaluated. Over the past year and a half, two types of congressional modalities have been trialed to address the challenge of the pandemic as far as scientific meetings are concerned: the fully virtual congress, in which case the conference program is live streamed to all of the attendees, and the hybrid congress, in which case some of the attendees physically participate at the congress's venue while others interact via a virtual platform. The current study set out to investigate the technical difficulties, social challenges, costs and sustainability, logistics and management issues linked to holding various types of congresses in the post-Covid world. Anatomical societies throughout the world are actively striving to reshape their response to the current global emergency and to uncover new types of conference modalities in the effort to keep scientific exchange alive and flourishing in the post-Covid era.  相似文献   

2CUL Slavic: The View So Far     

Robert Davis 《Slavic & East European Information Resources》2017,18(1-2):67-73

In fall 2016, the Columbia-Cornell collaboration in the area of Slavic & East European resource coordination and sharing celebrated its sixth year. The author reviews particulars of the development, implementation, and function of this program as well as some of the challenges that face such cross-institutional efforts.  相似文献   

Science Letters:Discovery of ultrahigh-T spinel-garnet granulite with pure CO_2 fluid inclusions from the Altay orogenic belt, NW China     

厉子龙  陈汉林  杨树锋  SANTOSH M. 《Journal of Zhejiang University. Science. B》2004,(10)

We first report discovery of the spinel-garnet-orthopyroxene granulite with pure CO2 fluid inclusions from the Fuyun region of the late Paleozoic Altay orogenic belt in Central Asia, NW China. The rock is characterized by an assemblage of garnet, orthopyroxene, spinel, cordierite, biotite, plagioclase and quartz. Symplectites of orthopyroxene and spinel, and orthopyroxene and cordierite indicate decompression under UHT conditions. Mineral chemistry shows that the or-thopyroxenes have high XMg and A12O3 contents (up to 9.23 wt%). Biotites are enriched in TiO2 and XMg and are stable under granulite facies conditions. The garnet and quartz from the rock carry monophase fluid inclusions which show peak melting temperatures of around -56.7℃, indicating a pure CO2 species being presented during the ultrahigh-T metamorphism in the Altay orogenic belt. The inclusions homogenize into a liquid phase at temperatures around 15.3-23.8℃ translating into CO2 densities of the order of 0.86-0.88 g/cm3. Based on prelim  相似文献   

单核细胞增多性李斯特菌RsbR抗酸应激机制（英文）     

Ke He  Yong-Ping Xin  Ying Shan  Xian Zhang  Hou-Hui Song  Wei-Huan Fang 《Journal of Zhejiang University. Science. B》2019,(8):660-669

目的:探明单增李斯特菌RsbR的两个保守磷酸化位点是否影响SigB(sigmaB)的表达.创新点:解析了RsbR在单增李斯特菌中SigB网络调控中的作用.方法:通过基因缺失、定点突变和回补技术构建rsbR基因缺失株、回补株和回补突变菌株,进行酸应激条件下的生长能力和强酸条件下的存活能力试验,并检测在酸应激下菌株中的SigB基因和蛋白表达的改变情况.结论:RsbR缺失能够显著降低单增李斯特菌的抗酸应激能力和下调SigB表达,RsbR-175位点是SigB调控途径中RsbT释放的先决条件.  相似文献   

企业数据库安全技术研究     

胡永波  林财兴 《上海大学学报(英文版)》2004,8(Z1)

本文分析了数据库系统的不安全因素.在简要介绍JAVA安全体系结构基础上结合JAAS来实现对用户身份的验证和授权以达到保护用户连接的目的、利用JSSE实现SSL隧道封装保护JDBC的传输,接着讨论了利用数据库管理系统提供的一些安全机制来加强数据库的安全.文章最后还提出了对高度机密的数据采用数据库加密的解决方案.  相似文献   

"3+2"——法国教师教育新模式   总被引：2，自引：0，他引：2  

陈永明 《外国中小学教育》2007,(4):5-12

“3 2”是法国推进面向21世纪教师教育改革的一种新模式。本文介绍了法国“3 2”新模式实施的背景,剖析了一元化承担初等学校教师和中等学校教师培养与研修的法国“教师教育大学院”(IUFM)的运作特点及其课程设置,并在此基础上探讨了“3 2”模式对我国教师教育模式改革的若干启示。  相似文献   

经济全球化与社会主义政治文明建设     

李见顺 《湖南第一师范学报》2004,4(3):25-28

经济全球化对社会主义政治文明建设产生了深刻的影响,它既对社会主义政治文明建设提出了诸多挑战,又给社会主义政治文明建设提供了很多机遇。我们要从国情出发。积极应对经济全球化,稳妥地推进社会主义政治文明建设,建设中国特色社会主义的新型政治文明。  相似文献   

乙烯式卤代烃亲核取代历程讨论     

孙喜龙  李岩 《河北北方学院学报(社会科学版)》2001,(3)

乙烯式卤代烃难发生亲核取代反应,反应历程研究受到限制.在双键碳中引入超离去基,反应顺利进行,且立体构型发生反转,证明该反应为SN2历程.  相似文献   

"A,但B"的类别及构成方法     

盛新华 《唐山师范学院学报》2003,25(6):1-6,77

从研究“A，但B”为代表的转折句的类别及构成方法入手，为对转折句进行语义分析提供方法和途经．根据A、B所表达的概念之间是否具有属种关系，将“A，但B”分为属种关系转折句和非属种关系转折句；根据A、B所断定的两种事物情况是否在同一个语义层面上，将“A，但B”类转折句分为相同语义层面上的相反相对和不同语义层面上的相反相对；根据A、B之间的逻辑联系来分类，将“A，但B”分为并列式、连贯式、递进式、选择式、因果式等转折句。“A，但B”类转折句构成的逻辑方法主要有求同法、求异法、限制法，概括法、排除法、对照法等．  相似文献   

基于J2EE应用的数据库访问方法研究     

王爱冬  张涛 《台州学院学报》2005,27(6):21-24

针对J2EE数据库访问环境,在实践的基础上,具体研究和分析了影响数据库操作性能的因素,提出了应当注意的一些主要问题,并讨论了J2EE环境中数据库的不同访问方式,以及对这些方式的选择。  相似文献