Based on prior investigation,this work defined a new thermodynamic shear advection parameter,which combines the vertical component of convective vorticity vector,horizontal divergence,and vertical gradient of generali...Based on prior investigation,this work defined a new thermodynamic shear advection parameter,which combines the vertical component of convective vorticity vector,horizontal divergence,and vertical gradient of generalized potential temperature.The interaction between waves and fundamental states was computed for the heavyrainfall event generated by landfalling typhoon“Morakot”.The analysis data was produced by ADAS[ARPS(Advanced Regional Prediction System)Data Analysis System]combined with the NCEP/NCAR final analysis data(1°×1°,26 vertical pressure levels and 6-hour interval)with the routine observations of surface and sounding.Because it may describe the typical vertical structure of dynamical and thermodynamic fields,the result indicates that the parameter is intimately related to precipitation systems.The parameter’s positive high-value area closely matches the reported 6-hour accumulated surface rainfall.And the statistical analysis reveals a certain correspondence between the thermodynamic shear advection parameter and the observed 6-hour accumulated surface rainfall in the summer of 2009.This implies that the parameter can predict and indicate the rainfall area,as well as the initiation and evolution of precipitation systems.展开更多
目的:从有效性及安全性比较3种不同手术入路治疗髋臼骨折的临床疗效.方法:回顾性搜集2015年1月-2020年1月在我院住院手术治疗的髋臼骨折患者病历资料,按手术入路分为改良Stoppa入路组,腹直肌旁入路组和髂腹股沟入路组,专人搜集各组病例...目的:从有效性及安全性比较3种不同手术入路治疗髋臼骨折的临床疗效.方法:回顾性搜集2015年1月-2020年1月在我院住院手术治疗的髋臼骨折患者病历资料,按手术入路分为改良Stoppa入路组,腹直肌旁入路组和髂腹股沟入路组,专人搜集各组病例的基线指标、临床观察指标及并发症,采用改良的Merle D'Aubigne and Postel评分系统随访评估术后6个月、12个月关节功能.结果:腹直肌旁入路组切口长度、手术时间小于改良Stoppa入路组,改良Stoppa入路组小于髂腹股沟入路组(P<0.05),3组入路手术患者术后骨折复位优良率、住院时间、骨折愈合时间、6个月及末次随访功能评分比较上差异无统计学意义(p>0.05).髂腹股沟入路组有1例术后伤口愈合不良.结论:髋臼前方3组入路均是治疗髋臼骨折的有效途径,腹直肌旁入路和改良Stoppa入路损伤更小,手术效率更高,尤其是腹直肌旁入路,更有助于后柱骨折的复位和螺钉置入.选择手术入路需综合考虑骨折形态、术者对于各手术入路的熟悉程度、各手术入路下骨折复位固定技巧等因素.展开更多
基金National Key R&D Program of China(2017YFC1501604)Key Laboratory of South China Sea Meteorological Disaster Prevention and Mitigation of Hainan Province(SCSF202101)+1 种基金Open Grants of the State Key Laboratory of Severe Weather(2022LASW-B09)National Natural Science Foundation of China(41405049)。
文摘Based on prior investigation,this work defined a new thermodynamic shear advection parameter,which combines the vertical component of convective vorticity vector,horizontal divergence,and vertical gradient of generalized potential temperature.The interaction between waves and fundamental states was computed for the heavyrainfall event generated by landfalling typhoon“Morakot”.The analysis data was produced by ADAS[ARPS(Advanced Regional Prediction System)Data Analysis System]combined with the NCEP/NCAR final analysis data(1°×1°,26 vertical pressure levels and 6-hour interval)with the routine observations of surface and sounding.Because it may describe the typical vertical structure of dynamical and thermodynamic fields,the result indicates that the parameter is intimately related to precipitation systems.The parameter’s positive high-value area closely matches the reported 6-hour accumulated surface rainfall.And the statistical analysis reveals a certain correspondence between the thermodynamic shear advection parameter and the observed 6-hour accumulated surface rainfall in the summer of 2009.This implies that the parameter can predict and indicate the rainfall area,as well as the initiation and evolution of precipitation systems.
文摘目的:从有效性及安全性比较3种不同手术入路治疗髋臼骨折的临床疗效.方法:回顾性搜集2015年1月-2020年1月在我院住院手术治疗的髋臼骨折患者病历资料,按手术入路分为改良Stoppa入路组,腹直肌旁入路组和髂腹股沟入路组,专人搜集各组病例的基线指标、临床观察指标及并发症,采用改良的Merle D'Aubigne and Postel评分系统随访评估术后6个月、12个月关节功能.结果:腹直肌旁入路组切口长度、手术时间小于改良Stoppa入路组,改良Stoppa入路组小于髂腹股沟入路组(P<0.05),3组入路手术患者术后骨折复位优良率、住院时间、骨折愈合时间、6个月及末次随访功能评分比较上差异无统计学意义(p>0.05).髂腹股沟入路组有1例术后伤口愈合不良.结论:髋臼前方3组入路均是治疗髋臼骨折的有效途径,腹直肌旁入路和改良Stoppa入路损伤更小,手术效率更高,尤其是腹直肌旁入路,更有助于后柱骨折的复位和螺钉置入.选择手术入路需综合考虑骨折形态、术者对于各手术入路的熟悉程度、各手术入路下骨折复位固定技巧等因素.
