Simulation of Blast and Fragment Loading Using a Coupled Multi-Solver Approach

Simulating blast and fragment loading simultaneously in a single computation requires the combined use of multiple states of the art solvers. A pipe bomb is an example of simple improvised explosive device (IED) that consists of a piece of pipe filled with explosive material and capped at both ends. To simulate the explosion of a pipe bomb and the damage it causes, a coupled multisolver approach based upon finite element and finite volume methods is applied. The numerical calculation presented demonstrates the ability of ANSYS AUTODYN(?) to correctly simulate the threats of lEDs and provides insight into how the most significant physical phenomena affect the results.     

变频器在恒温水暖系统中的应用

本系统采用PLC控制,运行稳定性好,维修成本低,保证了使用的连续性。通过进出口温度传感器实现双系统用变频器自动调速控制,保证了共暖,达到了燃煤最优化,确保锅炉内水温为65℃左右,减少了锅炉的结垢现象,相对增强了热传导,提高了热效率,也延长了锅炉的使用寿命,真正做到节约能源的目的。     

Enamel insert restorations on Limoges painted enamels: A study on a remarkable nineteenth-century restoration technique with particular attention to the original paillon designs

Two sixteenth-century Limoges painted enamel plaques by Léonard Limosin in the collection of the J. Paul Getty Museum, Los Angeles, show a remarkable restoration technique consisting of separately enameled pieces that have been inserted into areas where original enamel was lost. A detailed investigation of the two plaques brought information about this former restoration method and the materials used. Investigation included optical microscopy, UV-A examination, and X-radiography for identification and mapping of the insert restorations, scanning electron microscopy with energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, and gas chromatography-mass spectroscopy for analyzing organic restoration material as well as X-ray fluorescence for studying the enamel compositions. A survey of six other Limoges painted enamel collections in the USA was carried out, which revealed many more of these insert restorations and indicated particular damages related to the so-called paillon designs on silver or gold foils. A literature review was undertaken focusing on possible causes of the damage as well as on persons and workshops that may have executed the insert restorations.     

Scopus数据库眼科学期刊热点论文分析

分析了Scopus数据库2011年收录的7种SCI眼科学期刊共计175篇高下载量论文,结果表明：视网膜（病）、黄斑水肿、青光眼、新生血管、Ranibizumab、视网膜血管阻塞、光学相干断层扫描、角膜、人工晶状体、糖尿病视网膜病变、纳米医学/纳米技术等主题的被关注度最高,研究发展方向由眼前节扩展到了眼后节,合著论文比高达92％,文献综述比较高（51．42％）且篇均下载量最高。     

卒中意识与救治研究热点及演进趋势的知识图谱

目的：展示卒中意识与救治的研究热点及演进趋势。方法：检索WebofScience数据库中有关卒中意识与救治研究的文献,用关键词词频分析和共词分析方法绘制知识图谱。结果：自1996年始,相关论文数量逐年增长,卒中意识与救治受到越来越多的关注,说明卒中意识与救治问题仍然严峻,且在该研究领域尚未取得突破性进展。结论：卒中意识与救治的研究重点在急性缺血性卒中,特别是tPA治疗;研究视角从治疗为主转为防治结合。     

法律非学术,此热点非彼热点——新《档案法》第五章“档案信息化建设”热词梳理与分析

通过对《档案法》“档案信息化建设”专章中档案信息化十大热词与2000年以来我国档案信息化研究TOP40的主题词进行比较分析发现,面向档案法律关系调整的新《档案法》档案信息化建设相关规定的关注点并不完全同于以前沿理论与实践问题为导向的档案信息化学术研究的关注点。     

高炉热风围管发红、开裂原因分析和处理

针对二铰总厂2#高炉后期热风围管发红、开裂原因进行分析采取专业设备开孔,可调节压力灌浆处理方法使围管温度由原来的500℃-700℃降到250℃以内允许范围内.     

本钢六号高炉热风炉烘炉实践

对本钢6号高炉热风炉烘炉实践进行了阐述.根据热风炉运行情况证明,本次无恒温正压快速烘炉是成功的,满足了生产需要.