摘要：Graphene oxide nanomaterials are increasingly used in various fields due to their superior *** order to study the influence of graphene oxide additives on the performance of modified asphalt,in this study,graphene oxide modified asphalt was prepared and characteristics was studied including the high deformation resistance performance and the self-healing property of modified *** groups and morphology of graphene oxide modified asphalt were described by Fourier transform infrared *** high deformation resistance performance and self-healing effect of asphalt samples were obtained through dynamic slear rheometer(DSR)*** shows that graphene oxide dispersions improve the performance of asphalt relatively well compared to graphene oxide *** is no chemical reaction between graphene oxide and asphalt,but physical *** addition of graphene oxide improved the high deformation resistance of modified asphalt and expedited the self-healing ability of asphalt under fatigue load.

摘要：通过调研国内公路隧道套拱加固技术,分析了UHPC套拱的应用场景,提出了适用于两车道公路运营隧道的UHPC套拱预制单元划分,并依托实际工程分析了套拱装配施工中的质量控制等关键问题。研究表明:UHPC套拱的应用场景为衬砌结构厚度不足伴随衬砌裂缝等严重病害缺陷,既有建筑限界富余不足以使用传统混凝土套拱加固的公路隧道;两车道公路隧道UHPC套拱宜划分为拱顶、左右拱肩、左右拱腰、左右墙脚共7个单元进行预制,叠合式套拱应增加与既有衬砌的连接;套拱单元精准安装就位技术是套拱装配施工的关键技术,直接决定了套拱加固的成败,研发一款适用于装配式套拱加固施工的公路隧道专业设备是保证施工质量的关键。10 cm厚度UHPC套拱在柏垭子隧道中加固效果良好,可为同类型病害运营公路隧道的维修加固提供借鉴。

摘要：目的利用Excel软件设计体外循环电子记录模块并评价其功能。方法利用Excel 2013内置宏、函数、数据验证等功能,针对体外循环记录特点设计相应电子记录单用于350例(电子记录组)手术,同期术中传统纸质记录260例(手工记录组),在术中记录、收费管理、数据提取、术中提醒、耗材品控等方面进行比较。结果电子记录组在记录、收费的差错率更低(P<0.01),而在数据提取、术中提醒及耗材品控等方面拥有更高的成功率(P<0.01)。结论针对体外循环记录特点、基于Excel构建的体外循环电子记录模块既满足低成本、高兼容、开源式设计的特性要求,又有良好的临床应用效果,值得推广。