Currently, most of MT （magnetotelluric） data are still collected on sparse survey lines and interpreted using 2D inversion methods because of the field work cost, the work area environment, and so on. However, there...Currently, most of MT （magnetotelluric） data are still collected on sparse survey lines and interpreted using 2D inversion methods because of the field work cost, the work area environment, and so on. However, there are some 2D interpretation limitations of the MT data from 3D geoelectrical structures which always leads to wrong geological interpretations. In this paper, we used the 3D inversion method to interpret the MT sparse lines data. In model testing, the sparse lines data are the MT full information data generated from a test model and processed using the 3D conjugate gradients inversion code. The inversion results show that this inversion method is reasonable and effective. Meanwhile, we prove that for inversion results with different element parameters, the results by joint inversion of both the impedance tensor data and the tipper data are more accurate and closer to the test model.展开更多
目的探讨成都地区老年急性ST段抬高型心肌梗死(STEMI)患者临床特征及治疗现状。方法选择2017年1月~2019年6月就诊于成都地区11家综合医院胸痛中心的老年STEMI患者1017例,根据本研究医院2018年3月通过中国胸痛中心认证分为时间段1组498例...目的探讨成都地区老年急性ST段抬高型心肌梗死(STEMI)患者临床特征及治疗现状。方法选择2017年1月~2019年6月就诊于成都地区11家综合医院胸痛中心的老年STEMI患者1017例,根据本研究医院2018年3月通过中国胸痛中心认证分为时间段1组498例(2017.01.01~2018.03.31)和时间段2组519例(2018.04.01~2019.06.30)。分析2组临床特征及治疗现状。结果与时间段1组比较,时间段2组年龄、院外转诊比例明显增加,自行来院、血脂异常和外周动脉疾病比例明显降低(P<0.05,P<0.01)。与时间段1组比较,时间段2组患者到达医院大门至导丝通过时间、首次医疗接触到导丝通过时间明显缩短[74.0(50.0,108.0)min vs 92.5(65.0,132.0)min,P=0.001;110.5(73.0,182.8)min vs 126.5(87.3,179.0)min,P=0.004],出院带药他汀类药物比例明显降低(77.5%vs 80.3%,P=0.010)。多因素logistic回归分析显示,Killip≥Ⅱ级、心率、收缩压、血糖、≥2支血管病变和PCI是院内死亡的独立影响因素(P<0.01)。结论对于成都地区老年STEMI住院患者,再灌注治疗已经成为主要的治疗手段,院外带药亦基本符合指南要求。展开更多
基金supported by the National Hi-Tech Research and Development Program of China (863 Program) (No. 2007AA09Z310)National Natural Science Foundation of China (No. 40677037, 40774029, 41004028)+1 种基金Fundamental Research Funds for the Central Universities (No. 2010ZY53) Program for New Century Excellent Talents in University (NCET)
文摘Currently, most of MT （magnetotelluric） data are still collected on sparse survey lines and interpreted using 2D inversion methods because of the field work cost, the work area environment, and so on. However, there are some 2D interpretation limitations of the MT data from 3D geoelectrical structures which always leads to wrong geological interpretations. In this paper, we used the 3D inversion method to interpret the MT sparse lines data. In model testing, the sparse lines data are the MT full information data generated from a test model and processed using the 3D conjugate gradients inversion code. The inversion results show that this inversion method is reasonable and effective. Meanwhile, we prove that for inversion results with different element parameters, the results by joint inversion of both the impedance tensor data and the tipper data are more accurate and closer to the test model.
文摘目的探讨成都地区老年急性ST段抬高型心肌梗死(STEMI)患者临床特征及治疗现状。方法选择2017年1月~2019年6月就诊于成都地区11家综合医院胸痛中心的老年STEMI患者1017例,根据本研究医院2018年3月通过中国胸痛中心认证分为时间段1组498例(2017.01.01~2018.03.31)和时间段2组519例(2018.04.01~2019.06.30)。分析2组临床特征及治疗现状。结果与时间段1组比较,时间段2组年龄、院外转诊比例明显增加,自行来院、血脂异常和外周动脉疾病比例明显降低(P<0.05,P<0.01)。与时间段1组比较,时间段2组患者到达医院大门至导丝通过时间、首次医疗接触到导丝通过时间明显缩短[74.0(50.0,108.0)min vs 92.5(65.0,132.0)min,P=0.001;110.5(73.0,182.8)min vs 126.5(87.3,179.0)min,P=0.004],出院带药他汀类药物比例明显降低(77.5%vs 80.3%,P=0.010)。多因素logistic回归分析显示,Killip≥Ⅱ级、心率、收缩压、血糖、≥2支血管病变和PCI是院内死亡的独立影响因素(P<0.01)。结论对于成都地区老年STEMI住院患者,再灌注治疗已经成为主要的治疗手段,院外带药亦基本符合指南要求。
