28 research outputs found
Design and Implementation of Automatic Monitoring and Early Warning Analysis System for an Oilfield
生产自动化技术发展日新月异,特别是近十年,大型石油企业持续不断地提升生产自动化技术水平,加大生产自动化应用深度,实现石油生产“过程可视化”的同时,消除数据孤岛,实现信息共享,提高信息利用率,提高企业决策水平和实效性,实现管控一体化,已成为石油企业发展综合自动化系统的发展方向。 随着油田现场计算机网络、生产自动化建设不断深入,生产自动化技术和网络技术在油田生产现场各个原油处理站库的应用,促进了油田生产的发展。但随着生产流程的不断改造完善,生产管理人员在使用系统的过程中也不断产生新的应用需求。 本文以某油田原油处理站为对象,采集生产过程实时数据,通过统计计算和事故处理知识库联动,设计并研发基于...With the rapid development of production automation technology, especially in the last ten years, large oil companies have continuously enhanced the level of production automation technology and increased the depth of production automation application to realize the oil production process visualization. Meanwhile, eliminating data silos to achieve information sharing and utilization, improving dec...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X201323134
CT三维成像诊断寰枢关节不全脱位的临床价值
目的 评价CT三维成像对寰枢关节不全脱位的显示及诊断价值 ,探讨最佳三维成像方法。 方法 回顾性分析 4 1例寰枢关节不全脱位的CT影像学表现 ,比较横断面图像、多层面重建 (multiplanarreformatting ,MPR)法、表面遮盖 (surfaceshadedisplay ,SSD)法、最大强度投影(maximumintensityprojection ,MIP)法及容积重建 (volumerendering,VR)法三维图像显示的病变情况。 结果 寰枢关节不全脱位 4 1例 ,其中旋转型脱位 31例 ,前脱位 5例 ,后脱位 5例。影像学表现为上、下关节面错位 4 1例 ,其中错位 2~ 5mm 2 9例、5~ 9mm 12例 ;齿突侧距不对称 15例 ;寰齿间隙增宽合并骨折 8例。SSD法三维影像直观显示移位的寰枢关节上、下关节面 ,齿突侧距不对称及寰齿间隙增宽 ;横断面图像和MPR、MIP及VR法三维图像显示移位的上、下关节面差、不直观。 结论 运用CT三维成像能准确显示及诊断寰枢关节不全脱位 ,并以SSD法三维成像最佳
涂塑钢管海水海砂混凝土构件受弯性能研究
将海水海砂混凝土填入涂塑钢管,利用内涂塑层防止氯盐腐蚀钢管,可实现海水海砂混凝土在结构工程中的合理利用,但涂塑层对组合构件力学性能的影响尚不明确。为探究涂塑钢管海水海砂混凝土构件的受弯性能,明晰涂塑层对构件承载变形能力的影响,进行了12根试件的弯曲加载试验,主要参数为海水海砂混凝土强度。研究结果表明,涂塑层对受弯构件破坏形态和受力性能的影响不显著。涂塑钢管海水海砂混凝土受弯构件的破坏形态与传统钢管混凝土的破坏形态相似,均为钢管受压区发生压曲、受拉区达到屈服,核心混凝土产生均匀分布的多条裂缝,整体构件表现出良好的承载能力和变形能力。随着海水海砂混凝土强度的提高,组合构件的受弯承载力随之提高。利用现有钢管混凝土的相关规范可较好地预测涂塑钢管海水海砂混凝土构件的受弯承载力
Improvement of Efficiency Roll-Off of Yellow Phosphorescent Organic Light-Emitting Devices by N-Doping
高生物量经济植物修复重金属污染土壤研究进展
植物修复是重金属污染土壤修复的重要方法之一。利用高生物量经济植物修复重金属污染土壤,能够兼顾生态和经济效益,具有很大的应用前景。本文系统分析了植物修复现状及存在的问题,提出利用高生物量经济植物修复重金属污染土壤的优势,总结了近年来利用高生物量经济植物吸收重金属的研究进展,探讨了改善高生物量经济植物修复重金属污染土壤效率的方法,以期为提高植物修复经济效益、促进植物修复广泛应用提供参考
Improvement of Efficiency Roll-Off of Yellow Phosphorescent Organic Light-Emitting Devices by N-Doping
Report on the advances in Fisheries Engineering and Equipment research in Fujan province
渔业工程与装备是渔业生产现代化水平的重要标志之一,也是推进渔业生产方式转变的重要途径,是现代渔业科技不可或缺的重要组成。本文报道了福建省近年来所涉及的渔业工程与装备学科的发展现状,包括陆基养殖、港湾鱼类及鲍网箱养殖、深水区抗风浪网箱养殖、微孔增氧技术、湿颗粒饲料加工机械、大型网箱养殖安全监控技术、新型锚技术开发、闭式循环活鱼运输船、浮筏式消波堤、人工鱼礁、休闲渔业和风(能)光(太阳能)互补型海水淡化装置等。分析学科目前存在的问题并提出中期发展目标及“十二五“主攻方向。The technical level of Fisheries Engineering and Equipment is one of the most important factors to indicate the modernization of Fisheries.The researches and studies on Fisheries Engineering and Equipment is an indispensable branch of modern fisheries science and is an important measure to change fisheries production mode.Notability progresses have been achieved in researches and studies on Fisheries Engineering and Equipment in Fujian Province since 2000 year.The research advances about the facilities and Equipments and Engineering and their problems existed are reported in this paper.The facilities and engineering reported here include facilities and engineering applied in the land-based sea-farming such as pond and factory;the new cages made of HDPE for culturing fishes and for culturing abalone with new structure for abalone to adsorb;the equipments reported include the machinery for manufacturing the granule of soft feed;the monitor for detecting the escape of fishes in offshore cages;new kind anchors and their anchoring technology;the boats equipped with water circle recycling to transport live fishes;the HDPE raft for the abatement of waves;recreational fisheries and the small dissalting device driven by wind power and solar energy;the technology to increase oxygen in water with mini holes in the pipes which pressure air are pumped etc
