Chest wall abscess due to Prevotella bivia     

Gwo-jong Hsu  Cheng-ren Chen  Mei-chu Lai  Shi-ping Luh 《Journal of Zhejiang University. Science. B》2009,10(3):233-236

Prevotella bivia is associated with pelvic inflammatory disease. A 77-year-old man developed a rapidly growing chest wall abscess due to P. bivia within days. He underwent surgical resection of the infected area; his postoperative course was uneventful. This is the first case of chest wall abscess due to P. bivia infection. Its correct diagnosis cannot be underestimated because fulminant infections can occur in aged or immunocompromised patients if treated incorrectly. Prompt, appropriate surgical management, and antibiotic therapy affect treatment outcome.   相似文献   

基于能量变分的短肢剪力墙力学性能研究     

张建新  李辉 《武汉职业技术学院学报》2009,8(1):96-98

考虑了短肢剪力墙翼板的剪力滞后效应,构造了新的截面位移模式和剪滞翘曲位移函数,基于能量变分原理和刚度法导出了短肢剪力墙考虑剪滞效应和剪切变形的结构分析平面单元刚度矩阵,从而得到简单易行的短肢剪力墙的力学性能分析方法,通过算例分析结果证实本方法是可行的。  相似文献   

谈Infoserver设备在图书馆网络中的应用     

钟新革 《高校图书馆工作》2005,25(6):37-38,69

Infoserver是一种集防火墙、代理服务器、网站建设与发布、邮箱服务器等多功能为一身的硬件网络产品.它为数字图书馆建设提供了安全、稳定、高性价比的运行平台.本文依据该设备在本馆的工作实际,详细介绍了该设备在数字图书馆网络建设中的功能特点及存在的问题,希望能为同行的数字图书馆建设提供参考与帮助.  相似文献   

论综放工作面自燃火灾特点及防治技术     

方焕明 《河北能源职业技术学院学报》2004,4(2):44-46

本文根据煤炭的自燃发火机理和综放工作面开采特点,分析了综放工作面发火的原因和特点,并提出了防治技术措施。  相似文献   

槽喷混凝土技术在开挖软弱围岩隧道中的应用研究     

张雪亭 《天水师范学院学报》2009,29(2):79-81

针对当前在软弱围岩隧道施工中较常采用的爆破加挂网、立拱架、喷射混凝土技术,提出槽喷混凝土技术和理论计算方法。这种技术是先沿着开挖工作断面周边开挖出一个具有一定厚度与深度的超前单元槽孔,在槽孔内安放钢筋笼或预制的型钢钢架,然后喷射混凝土,逐步形成一道连续的钢筋混凝土拱圈的施工方法,具有人为可控性好、减少喷射混凝土回弹量、对围岩扰动小等优点,可产生较好的经济效益。  相似文献   

防火墙—一Intranet的安全设备     

张文辉  李晋芬 《雁北师范学院学报》2000,(5)

与 Internet这样一个世界范围的开放网络联接 ,在获得利益的同时 ,也要付出安全性代价。为了避免Internet的安全事故 ,应当采取有效的安全措施 ,而解决 Internet安全性问题的最有效的方法就是使用合适的防火墙  相似文献   

挡土墙及类似结构抗倾覆安全问题研究     

范有余  陈越 《长江工程职业技术学院学报》2004,21(1):18-20,24

运用类比法对挡土墙及类似结构传统的抗倾覆稳定验算方法提出质疑.推荐一种直接计算挡土墙基宽的方法,并附以简要图表,不需另行专门验算抗倾覆稳定性.这是将验算地基承载力、抗倾覆一起核算的方法.  相似文献   

Effects of structural parameters and rigidity of driving diaphragm on flow characteristics of micro valveless pump     

谢海波  傅新  杨华勇 《浙江大学学报(A卷英文版)》2003,4(1):53-57

The structure and operating principle of micro valveless pump were investigated theoretically and experimentally. The mathematical model of pressure and flow rate within the micro nozzle/diffuser was established to analyze the effects of nozzle/diffuser parameters on the output flow rate of the micro valveless pump. The experiments were carried out with different structural parameters, driving frequencies, vibration amplitudes and stiffness of the driving diaphragms. Effects of the structural parameters and driving conditions on the operation performance of the pump are discussed in detail. The work provides useful reference for structure optimization selection of the driving diaphragm of micro valveless pump. Project supported by National Natural Science Foundation of China (Nos. 50175098, 59835160)  相似文献   

Monitoring and Mitigating Particulate Matter Deposition on Decorative Surfaces: Current and Future Approaches in the Palace of Westminster     

Sarah-Jane Fox  Caroline Babington  Fiona Macalister  Thomas Bower  Charlotte Martin de Fonjaudran 《文物保护研究》2018,63(5):81-86

ABSTRACT

Research into dust deposition rates on the wall paintings in the State Apartments at the Palace of Westminster, London, UK, began during the restoration of the encaustic floor tiles. The study has broadened to inform day-to-day preventive care for the extensive fine art collections on display and the intricately decorated Gothic interiors, providing a powerful tool for the forthcoming restoration and renewal of the Palace. Different monitoring methods, using optical microscopy, macro-photography and software-based image analysis, were investigated. Qualitative analysis with SEM-EDX and optical microscopy allowed the identification of a number of anthropogenic, geogenic and biological sources of particulate matter, while quantitative results elucidated deposition trends, highlighting both seasonal and works-related impacts. Results indicated that mitigation measures taken to protect works of art and limit the diffusion and deposition of particulate matter on surrounding surfaces were successful. A new dust monitoring method, based on imaging of vertical surfaces and on a recently developed image analysis workflow (CHIJ) operated in open-source software (ImageJ) was trialled alongside more traditional methods for measuring dust deposition through collection of particulate matter on proxies. Results showed significant discrepancies between data acquired directly on wall painting surfaces as compared to horizontal glass slides. The advantages, limitations and complementarity of both monitoring methods were identified, and their potential contributions to the development of data-driven conservation approaches for heritage sites were assessed. The relatively low-tech methods and equipment used present useful and adapted tools for collection managers and conservators to inform their decision-making processes.  相似文献   

现浇砼空心无梁楼盖GBF高强薄壁管安装方法     

陈伟  张德刚  王殿永  郭军生 《中国科技信息》2006,(7):93-94

山东师范大学长清校区理科教学楼工程B1、B2区采用现浇空心无梁楼盖,采用GBF高强薄壁空心管成孔,施工过程中采用Φ14钢筋加工成定型限位插排,使空心管定位准确,安装快捷,同时利用8#钢丝对空心管进行固定,成功解决了混凝土浇筑过程中空心管的上浮问题,提高了工作效率.  相似文献