Soft soil has low shear strength and its density is high;construction of embankments on them would cause problems such as large and non-uniform subsidence. One way to avoid these subsidence is using of geo-grid combin...Soft soil has low shear strength and its density is high;construction of embankments on them would cause problems such as large and non-uniform subsidence. One way to avoid these subsidence is using of geo-grid combined with cement and lime columns. Geo-grids due to their tensile strength, and cement and lime columns due to their bearing capacity and their body friction, reduce embankment subsidence. Extensive researches have been done in order to reduce the subsidence of the embankments located on the roads, but few studies have being done about the inclined embankments on soft soil layers. In this paper, the road embankment has been located on inclined soft soil layers;the study will try to reduce embankment subsidence and uniform them using geo-grid combined with cement and lime column subsidence. The results show that the realization of this issue will cause subsidence reduction and uniformity in the embankment surface.展开更多
Atrial fibrillation（AF） is the most common sustained cardiac rhythm disturbance in clinical practice,increasing in prevalence with age.Curative treatment of AF with catheter ablation is now a legitimate option for a...Atrial fibrillation（AF） is the most common sustained cardiac rhythm disturbance in clinical practice,increasing in prevalence with age.Curative treatment of AF with catheter ablation is now a legitimate option for a number of patients.The dominant ablation for AF mainly concentrates on pulmonary veins（PVs） or complex fragment atrial electrograms（CFAEs）.However,the optimal approach for ablation of AF aroused some controversy.The bulk of the evidence suggests that the intrinsic cardiac autonomic nervous system may contribute to the formation of rapid firing from the PV sites or non-PV sites and CFAEs,and play a critical role in the initiation and maintenance of AF.We hypothesized that ganglionated plexi may be an ideal strategy for AF ablation.展开更多
文摘Soft soil has low shear strength and its density is high;construction of embankments on them would cause problems such as large and non-uniform subsidence. One way to avoid these subsidence is using of geo-grid combined with cement and lime columns. Geo-grids due to their tensile strength, and cement and lime columns due to their bearing capacity and their body friction, reduce embankment subsidence. Extensive researches have been done in order to reduce the subsidence of the embankments located on the roads, but few studies have being done about the inclined embankments on soft soil layers. In this paper, the road embankment has been located on inclined soft soil layers;the study will try to reduce embankment subsidence and uniform them using geo-grid combined with cement and lime column subsidence. The results show that the realization of this issue will cause subsidence reduction and uniformity in the embankment surface.
文摘Atrial fibrillation（AF） is the most common sustained cardiac rhythm disturbance in clinical practice,increasing in prevalence with age.Curative treatment of AF with catheter ablation is now a legitimate option for a number of patients.The dominant ablation for AF mainly concentrates on pulmonary veins（PVs） or complex fragment atrial electrograms（CFAEs）.However,the optimal approach for ablation of AF aroused some controversy.The bulk of the evidence suggests that the intrinsic cardiac autonomic nervous system may contribute to the formation of rapid firing from the PV sites or non-PV sites and CFAEs,and play a critical role in the initiation and maintenance of AF.We hypothesized that ganglionated plexi may be an ideal strategy for AF ablation.
