A new continuous catalytic reforming model was configured by using a molecule-based reactor module. Themodel was based on the Sinopec Research Institute of Petroleum Processing Co., Ltd. continuous catalytic reformer ...A new continuous catalytic reforming model was configured by using a molecule-based reactor module. Themodel was based on the Sinopec Research Institute of Petroleum Processing Co., Ltd. continuous catalytic reformer fullmodel, and was reduced to a size of 157 naphtha molecules (C1−C12) that underwent 764 reactions. The new model inheritedthe advantages of the original model, and had better solving performance and flexibility owing to support by the AspenHYSYS environment. Typical commercial plant data were selected for model validation, which showed advantages in theaccuracy of detailed predictions and the range of its application. In addition, the solving time was reduced from minutes toseconds. Therefore, the simplified model proved to be feasible for industrial application.展开更多
Since SINOPEC carried out the action plan of dramatically improving oil and gas exploration and development in 2019,oilfield development front has actively overcome the impact of disadvantage factors such as sharp flu...Since SINOPEC carried out the action plan of dramatically improving oil and gas exploration and development in 2019,oilfield development front has actively overcome the impact of disadvantage factors such as sharp fluctuations in oil prices,recurrent COVID-19 and withdrawal of nature reserves,fully implemented the decision and deployment of company group’s party leadership,focused on improving productivity,controlling decline,increasing recoverable capacity and reducing cost,adhered to the detailed reservoir understanding,precise plan deployment,detailed supporting processes and actuarial development benefits for strengthening the construction of production efficiency,paid close attention to the detailed development of old oilfields,enhanced the promotion and application of significantly improved oil recovery technology,put forth effort on consolidating the foundation of stable production,to make sure the production stable and rising,and oil production exceeded the planned target during the period from 2019 to 2022.In 2022,35.32 million tons oil were produced,with an increase of 0.16 million tons,marking the largest increase in the nearly past four years.展开更多
目的:比较宫颈癌盆腔照射螺旋断层放射治疗(Helical Tomotherapy,HT)计划与七野-静态调强放疗(7F-IMRT)计划的靶区和危及器官的剂量学差异。方法:选取2015年3月～2017年10月行HT治疗的25例宫颈癌患者,均采用俯卧位,憋尿状态。分别进行HT...目的:比较宫颈癌盆腔照射螺旋断层放射治疗(Helical Tomotherapy,HT)计划与七野-静态调强放疗(7F-IMRT)计划的靶区和危及器官的剂量学差异。方法:选取2015年3月～2017年10月行HT治疗的25例宫颈癌患者,均采用俯卧位,憋尿状态。分别进行HT和7F-IMRT两种计划设计,比较两种计划模式之间靶区和危及器官之间的剂量学参数及机器输出跳数。结果:(1)计划靶区(PTV):HT组CI和HI均优于7F-IMRT组,具有统计学差异(0.898±0.017 vs 0.834±0.013,P<0.001;0.062±0.012 vs 0.109±0.019,P<0.001);HT组PTV的D_1、D_2均低于7F-IMRT组(P<0.001),D_(mean)、D_(98)、D_(95)均较7F-IMRT组高(P=0.048,P<0.001,P=0.015)。(2)对于正常组织,HT组小肠、结肠、直肠和膀胱的D_(max)、D_(mean)、V_(30)、V_(40)以及直肠V_(50)均显著低于7F-IMRT组(P<0.001,P<0.001,P<0.001,P=0.001,P=0.006),其余V_(50)略低,无统计学差异(P=0.130);HT组双侧股骨头V_(25)、D_5、D_(mean)、D_(max)也显著低于7F-IMRT组(P<0.001);但是,HT组的机器输出量明显高于7F-IMRT组。结论:HT计划在适形度、均匀性及周围正常组织保护上显著优于7F-IMRT计划,在充分保证靶区剂量的同时又不增加患者放疗毒副反应;但其机器输出量高于7F-IMRT计划,对射束的利用率不高。在后续治疗实施过程中,HT系统作为影像引导放射治疗技术,确保每次治疗过程中的精准度,值得临床应用。展开更多
基金The authors acknowledge collaboration with and support from AspenTech via the National Key R&D Program of China(2021YFA1501201).
文摘A new continuous catalytic reforming model was configured by using a molecule-based reactor module. Themodel was based on the Sinopec Research Institute of Petroleum Processing Co., Ltd. continuous catalytic reformer fullmodel, and was reduced to a size of 157 naphtha molecules (C1−C12) that underwent 764 reactions. The new model inheritedthe advantages of the original model, and had better solving performance and flexibility owing to support by the AspenHYSYS environment. Typical commercial plant data were selected for model validation, which showed advantages in theaccuracy of detailed predictions and the range of its application. In addition, the solving time was reduced from minutes toseconds. Therefore, the simplified model proved to be feasible for industrial application.
文摘【目的】利用网络药理学和分子对接技术发现莪术醇抗脑心肌炎病毒(Encephalomyocarditis virus,EMCV)的作用靶点及机制。【方法】利用PharmMapper、GeneCards数据库获得莪术醇抗EMCV的相关靶点;通过Cytoscape 3.7.2软件、STRING和DAVID数据库构建靶蛋白互作(PPI)网络并筛选关键靶点,对靶点进行GO功能和KEGG通路富集分析,并构建莪术醇抗EMCV靶点-通路网络;通过AutoDock Vina 1.1.2分析莪术醇与靶蛋白的结合能及结合模式。【结果】网络药理学分析结果显示,莪术醇抗EMCV的潜在靶点有9个,其中丝裂原活化激酶14(mitogen-activated protein kinase 14,MAPK14)、信号转导与转录激活因子1(signal transducer and activator of transcription 1,STAT1)、白蛋白(albumin,ALB)、白细胞介素2(interleukin 2,IL2)可能是莪术醇抗EMCV的核心靶点,所得靶点参与C型凝集素受体信号通路、神经营养素信号通路和JAK-STAT信号通路等代谢通路,功能涉及调节炎症反应细胞因子的产生、蛋白激酶活性和药物结合等;分子对接结果显示,4种核心靶蛋白与莪术醇之间存在较强的结合能,均存在疏水形式的结合,其中ALB、STAT1和IL2与莪术醇之间还存在氢键结合。【结论】本研究结果表明,MAPK14、STAT1、ALB和IL2是莪术醇发挥抗EMCV作用的潜在靶点,本研究为莪术醇作为抗EMCV药物的研发提供理论依据和线索。
文摘Since SINOPEC carried out the action plan of dramatically improving oil and gas exploration and development in 2019,oilfield development front has actively overcome the impact of disadvantage factors such as sharp fluctuations in oil prices,recurrent COVID-19 and withdrawal of nature reserves,fully implemented the decision and deployment of company group’s party leadership,focused on improving productivity,controlling decline,increasing recoverable capacity and reducing cost,adhered to the detailed reservoir understanding,precise plan deployment,detailed supporting processes and actuarial development benefits for strengthening the construction of production efficiency,paid close attention to the detailed development of old oilfields,enhanced the promotion and application of significantly improved oil recovery technology,put forth effort on consolidating the foundation of stable production,to make sure the production stable and rising,and oil production exceeded the planned target during the period from 2019 to 2022.In 2022,35.32 million tons oil were produced,with an increase of 0.16 million tons,marking the largest increase in the nearly past four years.
文摘目的:比较宫颈癌盆腔照射螺旋断层放射治疗(Helical Tomotherapy,HT)计划与七野-静态调强放疗(7F-IMRT)计划的靶区和危及器官的剂量学差异。方法:选取2015年3月～2017年10月行HT治疗的25例宫颈癌患者,均采用俯卧位,憋尿状态。分别进行HT和7F-IMRT两种计划设计,比较两种计划模式之间靶区和危及器官之间的剂量学参数及机器输出跳数。结果:(1)计划靶区(PTV):HT组CI和HI均优于7F-IMRT组,具有统计学差异(0.898±0.017 vs 0.834±0.013,P<0.001;0.062±0.012 vs 0.109±0.019,P<0.001);HT组PTV的D_1、D_2均低于7F-IMRT组(P<0.001),D_(mean)、D_(98)、D_(95)均较7F-IMRT组高(P=0.048,P<0.001,P=0.015)。(2)对于正常组织,HT组小肠、结肠、直肠和膀胱的D_(max)、D_(mean)、V_(30)、V_(40)以及直肠V_(50)均显著低于7F-IMRT组(P<0.001,P<0.001,P<0.001,P=0.001,P=0.006),其余V_(50)略低,无统计学差异(P=0.130);HT组双侧股骨头V_(25)、D_5、D_(mean)、D_(max)也显著低于7F-IMRT组(P<0.001);但是,HT组的机器输出量明显高于7F-IMRT组。结论:HT计划在适形度、均匀性及周围正常组织保护上显著优于7F-IMRT计划,在充分保证靶区剂量的同时又不增加患者放疗毒副反应;但其机器输出量高于7F-IMRT计划,对射束的利用率不高。在后续治疗实施过程中,HT系统作为影像引导放射治疗技术,确保每次治疗过程中的精准度,值得临床应用。
