In recent years,countries worldwide have actively advocated electric vehicles for environmental protection.How-ever,restrictions on the driving range and charging have hampered the promotion of electric vehicles.This ...In recent years,countries worldwide have actively advocated electric vehicles for environmental protection.How-ever,restrictions on the driving range and charging have hampered the promotion of electric vehicles.This study proposes a portable,auxiliary photovoltaic power system based on a foldable scissors mechanism for electric vehicles.The system includes a photovoltaic power generation module and an electricity transfer module.The photovoltaic power generation module built based on a foldable scissors mechanism is five times smaller than in its unfolded state,improving its portability in its folded state.The electricity transfer module transfers electricity into the cabin via wireless power transfer units and stores electricity in supercapacitors.Solar simulation exper-iments were conducted to evaluate the system’s performance:maximum output power of 1.736 W is measured when the load is 5Ω,while maximum wireless power transfer efficiency is up to 57.7% with 10Ω load.An elec-tric vehicle in Chengdu city was simulated for a case study.The results show that the annual output of a single photovoltaic power system can drive the MINIEV for 423.625 km,indicating that the proposed system would be able to supply power for electric vehicles as an auxiliary power supply system.展开更多
目的：探讨宫腔镜微型剪刀分离手术治疗宫腔粘连的临床效果，并与宫腔镜电切分离手术效果相比较。方法将103例宫腔粘连患者随机分为观察组52例和对照组51例，观察组采用宫腔镜微型剪刀切除术，对照组行宫腔镜电切分离术，比较两组手术...目的：探讨宫腔镜微型剪刀分离手术治疗宫腔粘连的临床效果，并与宫腔镜电切分离手术效果相比较。方法将103例宫腔粘连患者随机分为观察组52例和对照组51例，观察组采用宫腔镜微型剪刀切除术，对照组行宫腔镜电切分离术，比较两组手术时间、术中出血量、术中并发症情况，术后1、3个月宫腔再粘连发生率以及临床疗效。结果两组手术时间、术中出血量及并发症等比较差异未见统计学意义（P ＞0.05）；观察组术后1、3个月宫腔再粘连发生率为26.9％、13.5％，对照组为29.4％、17.6％，组间比较差异未见统计学意义（P ＞0.05）；术后3个月复查，观察组总有效率为90.4％，对照组为92.2％，组间比较差异未见统计学意义（ P ＞0.05）。结论宫腔镜微型剪刀分离手术治疗宫腔粘临床效果与宫腔镜电切分离手术相似，宫腔镜剪刀分离术临床应用简便，可门诊完成，适于基层医院推广应用。展开更多
基金supported by the National Natural Science Foundation of China under grants no.51975490the Science and Technology Projects of Sichuan under grant nos.2021JDRC0118,2021JDRC0096,2021YFSY0059,and 2021YFQ0055.
文摘In recent years,countries worldwide have actively advocated electric vehicles for environmental protection.How-ever,restrictions on the driving range and charging have hampered the promotion of electric vehicles.This study proposes a portable,auxiliary photovoltaic power system based on a foldable scissors mechanism for electric vehicles.The system includes a photovoltaic power generation module and an electricity transfer module.The photovoltaic power generation module built based on a foldable scissors mechanism is five times smaller than in its unfolded state,improving its portability in its folded state.The electricity transfer module transfers electricity into the cabin via wireless power transfer units and stores electricity in supercapacitors.Solar simulation exper-iments were conducted to evaluate the system’s performance:maximum output power of 1.736 W is measured when the load is 5Ω,while maximum wireless power transfer efficiency is up to 57.7% with 10Ω load.An elec-tric vehicle in Chengdu city was simulated for a case study.The results show that the annual output of a single photovoltaic power system can drive the MINIEV for 423.625 km,indicating that the proposed system would be able to supply power for electric vehicles as an auxiliary power supply system.
文摘目的：探讨宫腔镜微型剪刀分离手术治疗宫腔粘连的临床效果，并与宫腔镜电切分离手术效果相比较。方法将103例宫腔粘连患者随机分为观察组52例和对照组51例，观察组采用宫腔镜微型剪刀切除术，对照组行宫腔镜电切分离术，比较两组手术时间、术中出血量、术中并发症情况，术后1、3个月宫腔再粘连发生率以及临床疗效。结果两组手术时间、术中出血量及并发症等比较差异未见统计学意义（P ＞0.05）；观察组术后1、3个月宫腔再粘连发生率为26.9％、13.5％，对照组为29.4％、17.6％，组间比较差异未见统计学意义（P ＞0.05）；术后3个月复查，观察组总有效率为90.4％，对照组为92.2％，组间比较差异未见统计学意义（ P ＞0.05）。结论宫腔镜微型剪刀分离手术治疗宫腔粘临床效果与宫腔镜电切分离手术相似，宫腔镜剪刀分离术临床应用简便，可门诊完成，适于基层医院推广应用。
