The Qilian Orogenic belt is one of the typical orogenic belts globally and a natural laboratory for studying plate tectonics.Many researchers have studied the ophiolite and high pressure and ultra-high pressure metamo...The Qilian Orogenic belt is one of the typical orogenic belts globally and a natural laboratory for studying plate tectonics.Many researchers have studied the ophiolite and high pressure and ultra-high pressure metamorphic rocks in the Qilian orogen and obtained valuable achievements.However,a hot debate exists on the basement property,the distribution of ophiolite,and the boundaries of tectonic units.Large-scale high-precision aeromagnetic surveys have recently been conducted in the Qilian Orogenic belt and adjacent areas.In this study,we are trying to analysis the tectonic framework of the Qilian Orogen using 1:500,000 aeromagnetic data.The results provide geophysical perspectives for studying the structural framework and deformation of this area.According to the aeromagnetic∆T anomaly map,the central and Southern Qilian have the same magnetic anomaly feature that noticeably differs from the North Qilian Orogenic belt and the Qaidam Block.This result indicates that the central and Southern Qilian have a unified magnetic basement and differ from the North Qilian orogenic belt and Qaidam Block.The map shows the distribution of ophiolite in the North Qilian orogenic belt.Linear magnetic anomalies represent the ophiolites because the mafic–ultramafic rocks usually have high magnetic susceptibility.The ophiolite belts are continuously distributed in the western part of North Qilian orogenic belt and have a large scale.However,the scale of the ophiolite belt and the outcropping of mafic–ultramafic rocks reduces when they pass through Qilian County to the east.The results indicate differences in the evolution process between the eastern and western parts of North Qilian,with Qilian County as the transition zone.This study also systematically defines the geophysical boundaries of the Qaidam Block,Qilian Block,North Qilian Orogenic belt,and Alxa block.It is proposed that the sinistral displacement of the Altun Fault is adjusted and absorbed by the series of NE-trending faults in the Qilian orogen and merge into the Longshoushan–Gushi Fault.The extension of the North Qilian Orogenic belt is strengthened by the neotectonics movement along the shearing direction,which separated the North Qilian Orogenic belt into several segments and formed a series of northeast-trending faults.展开更多
目的构建食管癌患者术后静脉血栓栓塞症风险预测模型。方法采用便利抽样选取2020年1月-2022年4月在某三级甲等医院行食管静脉血栓栓塞症癌根治术的220例患者作为建模组,分为静脉血栓栓塞症组60例和非静脉血栓栓塞症组160例。采用Logisti...目的构建食管癌患者术后静脉血栓栓塞症风险预测模型。方法采用便利抽样选取2020年1月-2022年4月在某三级甲等医院行食管静脉血栓栓塞症癌根治术的220例患者作为建模组,分为静脉血栓栓塞症组60例和非静脉血栓栓塞症组160例。采用Logistic回归分析建立食管癌患者术后静脉血栓栓塞症风险预测模型并对模型验证。结果年龄≥60岁、基础疾病、新辅助化疗、手术时长、术后使用凝血酶原复合物(prothrombin complex concentrates,PCC)、术后12 h D-D是食管癌患者术后静脉血栓栓塞症危险因素。HL检验P=0.250,受试者工作曲线特征曲线下面积(area under curve,AUC)为0.766,最佳临界值为0.445,灵敏度为0.783,特异度为0.662。验证组AUC为0.738,灵敏度为0.682,特异度为0.769,正确率为80.0%。结论该预测模型的预测效果良好,可为临床评估食管癌患者术后静脉血栓栓塞症发生风险提供参考。展开更多
基金supported by the National Natural Science Foundation of China grant(U2244220)China Geological Survey Project grant(DD20190551,DD20230351)。
文摘The Qilian Orogenic belt is one of the typical orogenic belts globally and a natural laboratory for studying plate tectonics.Many researchers have studied the ophiolite and high pressure and ultra-high pressure metamorphic rocks in the Qilian orogen and obtained valuable achievements.However,a hot debate exists on the basement property,the distribution of ophiolite,and the boundaries of tectonic units.Large-scale high-precision aeromagnetic surveys have recently been conducted in the Qilian Orogenic belt and adjacent areas.In this study,we are trying to analysis the tectonic framework of the Qilian Orogen using 1:500,000 aeromagnetic data.The results provide geophysical perspectives for studying the structural framework and deformation of this area.According to the aeromagnetic∆T anomaly map,the central and Southern Qilian have the same magnetic anomaly feature that noticeably differs from the North Qilian Orogenic belt and the Qaidam Block.This result indicates that the central and Southern Qilian have a unified magnetic basement and differ from the North Qilian orogenic belt and Qaidam Block.The map shows the distribution of ophiolite in the North Qilian orogenic belt.Linear magnetic anomalies represent the ophiolites because the mafic–ultramafic rocks usually have high magnetic susceptibility.The ophiolite belts are continuously distributed in the western part of North Qilian orogenic belt and have a large scale.However,the scale of the ophiolite belt and the outcropping of mafic–ultramafic rocks reduces when they pass through Qilian County to the east.The results indicate differences in the evolution process between the eastern and western parts of North Qilian,with Qilian County as the transition zone.This study also systematically defines the geophysical boundaries of the Qaidam Block,Qilian Block,North Qilian Orogenic belt,and Alxa block.It is proposed that the sinistral displacement of the Altun Fault is adjusted and absorbed by the series of NE-trending faults in the Qilian orogen and merge into the Longshoushan–Gushi Fault.The extension of the North Qilian Orogenic belt is strengthened by the neotectonics movement along the shearing direction,which separated the North Qilian Orogenic belt into several segments and formed a series of northeast-trending faults.
文摘目的构建食管癌患者术后静脉血栓栓塞症风险预测模型。方法采用便利抽样选取2020年1月-2022年4月在某三级甲等医院行食管静脉血栓栓塞症癌根治术的220例患者作为建模组,分为静脉血栓栓塞症组60例和非静脉血栓栓塞症组160例。采用Logistic回归分析建立食管癌患者术后静脉血栓栓塞症风险预测模型并对模型验证。结果年龄≥60岁、基础疾病、新辅助化疗、手术时长、术后使用凝血酶原复合物(prothrombin complex concentrates,PCC)、术后12 h D-D是食管癌患者术后静脉血栓栓塞症危险因素。HL检验P=0.250,受试者工作曲线特征曲线下面积(area under curve,AUC)为0.766,最佳临界值为0.445,灵敏度为0.783,特异度为0.662。验证组AUC为0.738,灵敏度为0.682,特异度为0.769,正确率为80.0%。结论该预测模型的预测效果良好,可为临床评估食管癌患者术后静脉血栓栓塞症发生风险提供参考。
