This study aims to explore the interdecadal variation of South Asian High(SAH) and its relationship with SST(sea surface temperature) of the tropical and subtropical regions by using the NCEP/NCAR monthly reanalysis d...This study aims to explore the interdecadal variation of South Asian High(SAH) and its relationship with SST(sea surface temperature) of the tropical and subtropical regions by using the NCEP/NCAR monthly reanalysis data from 1948 to 2012, based on the NCAR CAM 3.0 general circulation model. The results show that: 1) the intensity of SAH represents a remarkable interdecadal variation characteristic, the intensity of SAH experienced from weak to strong at the late 1970 s, and after the late 1970 s, its strength is enhanced and the area is expanded in the east-west direction.The expansion degree is greater westward than eastward, while it is opposite in summer. 2) Corresponding to the interdecadal variation of SAH intensity, after the late 1970 s, the divergent component of wind field has two ascending and three descending areas. Of the two ascending areas, one is located in the East Pacific, the other location varies with the season from the Indian Ocean in winter to the South China Sea and West Pacific in summer. Three descending areas are located in the north-central Africa, the East Asia and the Middle Pacific region respectively. 3) Corresponding to the interdecadal variation of SAH intensity, the rotational component of wind field at the lower level is an anomalous cyclone over the South China Sea and West Pacific in summer, while in winter, it is an anomalous cyclone over the Indian Ocean, and an anomalous anticyclone over the equatorial Middle Pacific. 4) Numerical simulations show that the interdecadal variation of SAH is closely related to the SST of the tropical and subtropical regions. The SST of Indian Ocean plays an important role in winter, while in summer, the SST of the South China Sea and West Pacific plays an important role, and the SST of the East Pacific also plays a certain role.展开更多
目的分析生理能力与手术应激评估(estimation of physiologic ability and surgical stress,E-PASS)系统、计数病死率和患病率的生理学和手术严重性评分(physiological and operative severity score for enumeration of mortality and ...目的分析生理能力与手术应激评估(estimation of physiologic ability and surgical stress,E-PASS)系统、计数病死率和患病率的生理学和手术严重性评分(physiological and operative severity score for enumeration of mortality and morbidity,POSSUM)系统预测老年腰椎骨折术后并发症的可行性。方法选取我院2017年12月至2021年5月行腰椎椎弓根螺钉内固定治疗的268例老年腰椎骨折患者。根据患者住院期间临床病历信息及血液检查结果计算E-PASS系统和POSSUM系统分值,在术后1个月内统计并发症发生情况。研究两系统关系与术后并发症关系。结果(1)268例老年腰椎骨折患者中,75例(28.0%)出现术后并发症。主要术后并发症31例,次要术后并发症44例。(2)术后并发症组患者E-PASS系统[术前风险评分(preoperative risk score,PRS)、手术应激评分(surgical stress score,SSS)、综合风险评分(comprehensive risk score,CRS)]及POSSUM系统[生理学评分(physiological score,PS)、手术严重度评分(operative severity score,OSS)、总分]分值高于无术后并发症组患者(P<0.05)。术后并发症的ROC结果显示,E-PASS系统中的PRS、SSS、CRS AUC分别为0.659、0.649、0.778,POSSUM系统中的PS、OSS、总分AUC分别为0.655、0.665、0.732。(3)术后主要并发症组患者E-PASS系统(PRS、SSS、CRS)及POSSUM系统(PS、OSS、总分)分值高于无主要并发症组患者(P<0.05)。术后主要并发症ROC结果显示,E-PASS系统中的PRS、SSS、CRS AUC分别为0.734、0.695、0.834;POSSUM系统中的PS、OSS、总分分别为0.666、0.651、0.735。结论较POSSUM系统,E-PASS系统评估老年腰椎骨折手术治疗患者术后并发症具有更高临床应用价值及可行性,值得推广应用。展开更多
基金National Natural Science Foundation for Yong Scholars(41105059,41305079)General Program of the National Natural Science Foundation of China(41575070,41230422,41575102)Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)
文摘This study aims to explore the interdecadal variation of South Asian High(SAH) and its relationship with SST(sea surface temperature) of the tropical and subtropical regions by using the NCEP/NCAR monthly reanalysis data from 1948 to 2012, based on the NCAR CAM 3.0 general circulation model. The results show that: 1) the intensity of SAH represents a remarkable interdecadal variation characteristic, the intensity of SAH experienced from weak to strong at the late 1970 s, and after the late 1970 s, its strength is enhanced and the area is expanded in the east-west direction.The expansion degree is greater westward than eastward, while it is opposite in summer. 2) Corresponding to the interdecadal variation of SAH intensity, after the late 1970 s, the divergent component of wind field has two ascending and three descending areas. Of the two ascending areas, one is located in the East Pacific, the other location varies with the season from the Indian Ocean in winter to the South China Sea and West Pacific in summer. Three descending areas are located in the north-central Africa, the East Asia and the Middle Pacific region respectively. 3) Corresponding to the interdecadal variation of SAH intensity, the rotational component of wind field at the lower level is an anomalous cyclone over the South China Sea and West Pacific in summer, while in winter, it is an anomalous cyclone over the Indian Ocean, and an anomalous anticyclone over the equatorial Middle Pacific. 4) Numerical simulations show that the interdecadal variation of SAH is closely related to the SST of the tropical and subtropical regions. The SST of Indian Ocean plays an important role in winter, while in summer, the SST of the South China Sea and West Pacific plays an important role, and the SST of the East Pacific also plays a certain role.
文摘目的分析生理能力与手术应激评估(estimation of physiologic ability and surgical stress,E-PASS)系统、计数病死率和患病率的生理学和手术严重性评分(physiological and operative severity score for enumeration of mortality and morbidity,POSSUM)系统预测老年腰椎骨折术后并发症的可行性。方法选取我院2017年12月至2021年5月行腰椎椎弓根螺钉内固定治疗的268例老年腰椎骨折患者。根据患者住院期间临床病历信息及血液检查结果计算E-PASS系统和POSSUM系统分值,在术后1个月内统计并发症发生情况。研究两系统关系与术后并发症关系。结果(1)268例老年腰椎骨折患者中,75例(28.0%)出现术后并发症。主要术后并发症31例,次要术后并发症44例。(2)术后并发症组患者E-PASS系统[术前风险评分(preoperative risk score,PRS)、手术应激评分(surgical stress score,SSS)、综合风险评分(comprehensive risk score,CRS)]及POSSUM系统[生理学评分(physiological score,PS)、手术严重度评分(operative severity score,OSS)、总分]分值高于无术后并发症组患者(P<0.05)。术后并发症的ROC结果显示,E-PASS系统中的PRS、SSS、CRS AUC分别为0.659、0.649、0.778,POSSUM系统中的PS、OSS、总分AUC分别为0.655、0.665、0.732。(3)术后主要并发症组患者E-PASS系统(PRS、SSS、CRS)及POSSUM系统(PS、OSS、总分)分值高于无主要并发症组患者(P<0.05)。术后主要并发症ROC结果显示,E-PASS系统中的PRS、SSS、CRS AUC分别为0.734、0.695、0.834;POSSUM系统中的PS、OSS、总分分别为0.666、0.651、0.735。结论较POSSUM系统,E-PASS系统评估老年腰椎骨折手术治疗患者术后并发症具有更高临床应用价值及可行性,值得推广应用。
