目的:探讨早期微创穿刺引流术治疗高血压性基底节区脑出血的临床效果。方法:回顾性分析石狮市医院收治的84例高血压性基底节区脑出血患者,病例纳入时间为2020年1-6月。依据患者采用的治疗方案进行分组,其中对照组(n=42)以小骨窗开颅术治...目的:探讨早期微创穿刺引流术治疗高血压性基底节区脑出血的临床效果。方法:回顾性分析石狮市医院收治的84例高血压性基底节区脑出血患者,病例纳入时间为2020年1-6月。依据患者采用的治疗方案进行分组,其中对照组(n=42)以小骨窗开颅术治疗,观察组(n=42)以微创穿刺引流术治疗。对比两组手术情况、手术结局、神经功能、预后情况。结果:观察组手术时间、住院时间均短于对照组,术后首次进食时间、首次床上活动时间均早于对照组,术中失血量少于对照组(P<0.05)。两组血肿清除率、再出血率、死亡率比较,差异无统计学意义(P>0.05)。术后14 d,观察组美国国立卫生院卒中量表(National Institute of Health stroke scale,NIHSS)评分低于对照组,格拉斯哥昏迷量表(Glasgow coma scale,GCS)评分高于对照组,差异有统计学意义(P<0.05)。观察组预后良好率为88.10%,高于对照组的69.05%,差异有统计学意义(P<0.05)。结论:早期微创穿刺引流术治疗高血压性基底节区脑出血的效果较好,不仅能显著缩短患者的术后恢复时间,并且具有良好的血肿清除效果,对患者神经功能的恢复及预后具有显著的积极作用,应用前景较好。展开更多
A 3D bounding surface model is established for rockfill materials,which can be applied to appropriately predict the deformation and the stabilization of rockfill dams.Firstly,an associated plastic flow rule for rockfi...A 3D bounding surface model is established for rockfill materials,which can be applied to appropriately predict the deformation and the stabilization of rockfill dams.Firstly,an associated plastic flow rule for rockfill materials is investigated based on the elaborate data from the large-style triaxial compression tests and the true triaxial tests.Secondly,the constitutive equations of the 3D bounding surface model are established by several steps.These steps include the bounding surface incorporating the general nonlinear strength criterion,stress-dilatancy equations,the evolution of the bounding surface and the bounding surface plasticity.Finally,the 3D bounding surface model is used to predict the mechanical behaviors of rockfill materials from the large-style triaxial compression tests and the true triaxial tests.Consequently,the proposed 3D bounding surface model can well capture such behaviors of rockfill materials as the strain hardening,the post-peak strain softening,and the volumetric strain contraction and expansion in both two-and three-dimensional stress spaces.展开更多
A bounding surface model incorporating a unified nonlinear strength criterion is proposed.The proposed bounding surface model contains 9 model parameters,which can be determined from the conventional triaxial tests.Th...A bounding surface model incorporating a unified nonlinear strength criterion is proposed.The proposed bounding surface model contains 9 model parameters,which can be determined from the conventional triaxial tests.The bounding surface model can reproduce such behaviours as the strain hardening,the post-peak strain softening,and the volumetric strain contraction and expansion.Based on the comparisons between the predictions and the test results,the proposed strength criterion and model can well reproduce the experimental results of the strength and stress-strain behaviours of rockfill material in three-dimensional stress space.The strength behaviour of rockfill material is summarized as:(a) the failure stress ratio decreases with the initial confining pressure on the meridian plane;(b) the failure deviatoric stress decreases with the Lode angle from 0o to 60o on the deviatoric plane.The stress ratio decreases with increasing one of such factors as the initial void ratio,the intermediate principal stress ratio and the minor principal stress at the same strain when the other factors are given.展开更多
文摘目的:探讨早期微创穿刺引流术治疗高血压性基底节区脑出血的临床效果。方法:回顾性分析石狮市医院收治的84例高血压性基底节区脑出血患者,病例纳入时间为2020年1-6月。依据患者采用的治疗方案进行分组,其中对照组(n=42)以小骨窗开颅术治疗,观察组(n=42)以微创穿刺引流术治疗。对比两组手术情况、手术结局、神经功能、预后情况。结果:观察组手术时间、住院时间均短于对照组,术后首次进食时间、首次床上活动时间均早于对照组,术中失血量少于对照组(P<0.05)。两组血肿清除率、再出血率、死亡率比较,差异无统计学意义(P>0.05)。术后14 d,观察组美国国立卫生院卒中量表(National Institute of Health stroke scale,NIHSS)评分低于对照组,格拉斯哥昏迷量表(Glasgow coma scale,GCS)评分高于对照组,差异有统计学意义(P<0.05)。观察组预后良好率为88.10%,高于对照组的69.05%,差异有统计学意义(P<0.05)。结论:早期微创穿刺引流术治疗高血压性基底节区脑出血的效果较好,不仅能显著缩短患者的术后恢复时间,并且具有良好的血肿清除效果,对患者神经功能的恢复及预后具有显著的积极作用,应用前景较好。
基金supported by the National Natural Science Foundation for Distinguished Young Scholar (Grant No. 50825901)the Key Project of National Natural Science Foundation of China and Yalongjiang Hydro-electric Development Joint Research Fund (Grant No. 50639050)+2 种基金the Public Service Sector R&D Project of Ministry of Water Resource of China(Grant No. 200801014)the Fundamental Research Funds for the Central Universities (Grant No. 2010B15014)Scientific Innovation Research Scheme for Jiangsu University Graduate (Grant No. CX10B_207Z)
文摘A 3D bounding surface model is established for rockfill materials,which can be applied to appropriately predict the deformation and the stabilization of rockfill dams.Firstly,an associated plastic flow rule for rockfill materials is investigated based on the elaborate data from the large-style triaxial compression tests and the true triaxial tests.Secondly,the constitutive equations of the 3D bounding surface model are established by several steps.These steps include the bounding surface incorporating the general nonlinear strength criterion,stress-dilatancy equations,the evolution of the bounding surface and the bounding surface plasticity.Finally,the 3D bounding surface model is used to predict the mechanical behaviors of rockfill materials from the large-style triaxial compression tests and the true triaxial tests.Consequently,the proposed 3D bounding surface model can well capture such behaviors of rockfill materials as the strain hardening,the post-peak strain softening,and the volumetric strain contraction and expansion in both two-and three-dimensional stress spaces.
基金supported by the National Natural Science Foundation of China for Distinguished Young Scholar (Grant No. 50825901)the Public Service Sector R&D Project of Ministry of Water Resource of China(Grant No. 200801014)+1 种基金the Fundamental Research Funds for the Central Universities (Grant No. 2011B14514)Jiangsu Civil Engineering Graduate Center for Innovation and Academic Communication Foundation
文摘A bounding surface model incorporating a unified nonlinear strength criterion is proposed.The proposed bounding surface model contains 9 model parameters,which can be determined from the conventional triaxial tests.The bounding surface model can reproduce such behaviours as the strain hardening,the post-peak strain softening,and the volumetric strain contraction and expansion.Based on the comparisons between the predictions and the test results,the proposed strength criterion and model can well reproduce the experimental results of the strength and stress-strain behaviours of rockfill material in three-dimensional stress space.The strength behaviour of rockfill material is summarized as:(a) the failure stress ratio decreases with the initial confining pressure on the meridian plane;(b) the failure deviatoric stress decreases with the Lode angle from 0o to 60o on the deviatoric plane.The stress ratio decreases with increasing one of such factors as the initial void ratio,the intermediate principal stress ratio and the minor principal stress at the same strain when the other factors are given.
