Electrocatalytic water electrolysis,involving hydrogen evolution reaction(HER)and oxygen evolution reaction(OER),two halfreactions,is an eco-friendly approach toward hydrogen production.In this work,needle-like Ru-Fe-...Electrocatalytic water electrolysis,involving hydrogen evolution reaction(HER)and oxygen evolution reaction(OER),two halfreactions,is an eco-friendly approach toward hydrogen production.In this work,needle-like Ru-Fe-Ni-P on NiFe foam is prepared through corrosive engineering and following a low-temperature phosphorization procedure for overall water-splitting.The as-designed Ru-Fe-Ni-P exhibits a porous needle-like structure,surface,and binder-free merits,and then can expose rich active sites,favor the transportation of mass/electron,and accelerate the reaction kinetics during catalytic process.Then,the synthesized Ru-Fe-Ni-P owns remarkable catalytic performance for HER,with 18 and 67 mV to reach 10 mA·cm^(−2)in alkaline and neutral media.Moreover,a low cell voltage of 1.51 V is required to produce a current of 10 mA·cm^(−2)in a two electrode electrolyzer with excellent stability.Interestingly,sustainable energies can power the electrolyzer effectively with abundant hydrogen generation.展开更多
Biliary stenosis may represent a diagnostic and therapeutic challenge resulting in a delay in diagnosis and initiation of therapy due to the frequent difficulty in distinguishing a benign from a malignant stricture.In...Biliary stenosis may represent a diagnostic and therapeutic challenge resulting in a delay in diagnosis and initiation of therapy due to the frequent difficulty in distinguishing a benign from a malignant stricture.In such cases,the diagnostic flowchart includes the sequential execution of imaging techniques,such as magnetic resonance,magnetic resonance cholangiopancreatography,and endoscopic ultrasound,while endoscopic retrograde cholangiopancreatography is performed to collect tissue for histopathological/cytological diagnosis or to treat the stenosis by insertion of stent.The execution of percutaneous transhepatic drainage with subsequent biopsy has been shown to increase the possibility of tissue diagnosis after failure of the above techniques.Although the diagnostic yield of histopathology and imaging has increased with improvements in endoscopic ultrasound and peroral cholangioscopy,differential diagnosis between malignant and benign stenosis may not be easy in some patients,and strictures are classified as indeterminate.In these cases,a multidisciplinary workup including biochemical marker assays and advanced technologies available may speed up a diagnosis of malignancy or avoid unnecessary surgery in the event of a benign stricture.Here,we review recent advancements in the diagnosis and management of biliary strictures and describe tips and tricks to increase diagnostic yields in clinical routine.展开更多
目的探讨应用带孔金属骨针联合钛缆和髌骨环内固定治疗髌骨粉碎性骨折术后膝关节功能恢复疗效差异。方法我院骨科2016年1月~2018年1月收治髌骨粉碎性骨折病人52例,按治疗方式不同分成针缆组和髌骨环组,针缆组26例,给予带孔金属骨针联合...目的探讨应用带孔金属骨针联合钛缆和髌骨环内固定治疗髌骨粉碎性骨折术后膝关节功能恢复疗效差异。方法我院骨科2016年1月~2018年1月收治髌骨粉碎性骨折病人52例,按治疗方式不同分成针缆组和髌骨环组,针缆组26例,给予带孔金属骨针联合钛缆内固定术;髌骨环组26例,给予髌骨环内固定术。比较两组内固定方式在术后膝关节功能恢复差异,随访3个月,比较两组病人术后膝关节有无僵硬、挛缩、屈伸功能废用性丧失及内固定装置有无松动等并发症。结果术后膝关节早期功能恢复均按照膝关节评分(hospital for special surgery knee score, HSS评分)进行评定,其中在针缆环组病人中,术后1周内直腿抬高训练、下肢肌力、膝关节屈曲及行走能力优良率情况,均高于髌骨环组,差异有统计学意义(P<0.05);针缆组病人中,术后1个月内膝关节功能恢复优良率均显著高于髌骨环内固定组,差异有统计学意义(P<0.05);术后随访3个月,髌骨环内固定组病人膝关节僵硬、挛缩、屈伸功能废用性丧失及内固定装置松动等并发症发生率高于针缆组,差异有统计学意义(P<0.05)。结论针对髌骨粉碎性骨折行带孔金属骨针联合钛缆内固定的治疗,不仅充分予以骨折断端坚强内固定,同时有效提高病人术后膝关节早期功能恢复率,获得了满意的疗效。展开更多
基金the National Natural Science Foundation of China(Nos.22002068,21971132,51772162,and 52072197)a project funded by China Postdoctoral Science Foundation(No.2021M691700)+6 种基金Youth Innovation and Technology Foundation of Shandong Higher Education Institutions,China(No.2019KJC004)Outstanding Youth Foundation of Shandong Province,China(No.ZR2019JQ14)Taishan Scholar Young Talent Program(No.tsqn201909114)Major Scientific and Technological Innovation Project(No.2019JZZY020405)Major Basic Research Program of Natural Science Foundation of Shandong Province(No.ZR2020ZD09)the Natural Science Foundation of Shandong Province of China(Nos.ZR2019BB002 and ZR2018BB031)Talent Foundation funded by Province and Ministry Co-construction Collaborative Innovation Center of Eco-chemical Engineering(No.STHGYX2202).
文摘Electrocatalytic water electrolysis,involving hydrogen evolution reaction(HER)and oxygen evolution reaction(OER),two halfreactions,is an eco-friendly approach toward hydrogen production.In this work,needle-like Ru-Fe-Ni-P on NiFe foam is prepared through corrosive engineering and following a low-temperature phosphorization procedure for overall water-splitting.The as-designed Ru-Fe-Ni-P exhibits a porous needle-like structure,surface,and binder-free merits,and then can expose rich active sites,favor the transportation of mass/electron,and accelerate the reaction kinetics during catalytic process.Then,the synthesized Ru-Fe-Ni-P owns remarkable catalytic performance for HER,with 18 and 67 mV to reach 10 mA·cm^(−2)in alkaline and neutral media.Moreover,a low cell voltage of 1.51 V is required to produce a current of 10 mA·cm^(−2)in a two electrode electrolyzer with excellent stability.Interestingly,sustainable energies can power the electrolyzer effectively with abundant hydrogen generation.
文摘Biliary stenosis may represent a diagnostic and therapeutic challenge resulting in a delay in diagnosis and initiation of therapy due to the frequent difficulty in distinguishing a benign from a malignant stricture.In such cases,the diagnostic flowchart includes the sequential execution of imaging techniques,such as magnetic resonance,magnetic resonance cholangiopancreatography,and endoscopic ultrasound,while endoscopic retrograde cholangiopancreatography is performed to collect tissue for histopathological/cytological diagnosis or to treat the stenosis by insertion of stent.The execution of percutaneous transhepatic drainage with subsequent biopsy has been shown to increase the possibility of tissue diagnosis after failure of the above techniques.Although the diagnostic yield of histopathology and imaging has increased with improvements in endoscopic ultrasound and peroral cholangioscopy,differential diagnosis between malignant and benign stenosis may not be easy in some patients,and strictures are classified as indeterminate.In these cases,a multidisciplinary workup including biochemical marker assays and advanced technologies available may speed up a diagnosis of malignancy or avoid unnecessary surgery in the event of a benign stricture.Here,we review recent advancements in the diagnosis and management of biliary strictures and describe tips and tricks to increase diagnostic yields in clinical routine.
文摘目的探讨应用带孔金属骨针联合钛缆和髌骨环内固定治疗髌骨粉碎性骨折术后膝关节功能恢复疗效差异。方法我院骨科2016年1月~2018年1月收治髌骨粉碎性骨折病人52例,按治疗方式不同分成针缆组和髌骨环组,针缆组26例,给予带孔金属骨针联合钛缆内固定术;髌骨环组26例,给予髌骨环内固定术。比较两组内固定方式在术后膝关节功能恢复差异,随访3个月,比较两组病人术后膝关节有无僵硬、挛缩、屈伸功能废用性丧失及内固定装置有无松动等并发症。结果术后膝关节早期功能恢复均按照膝关节评分(hospital for special surgery knee score, HSS评分)进行评定,其中在针缆环组病人中,术后1周内直腿抬高训练、下肢肌力、膝关节屈曲及行走能力优良率情况,均高于髌骨环组,差异有统计学意义(P<0.05);针缆组病人中,术后1个月内膝关节功能恢复优良率均显著高于髌骨环内固定组,差异有统计学意义(P<0.05);术后随访3个月,髌骨环内固定组病人膝关节僵硬、挛缩、屈伸功能废用性丧失及内固定装置松动等并发症发生率高于针缆组,差异有统计学意义(P<0.05)。结论针对髌骨粉碎性骨折行带孔金属骨针联合钛缆内固定的治疗,不仅充分予以骨折断端坚强内固定,同时有效提高病人术后膝关节早期功能恢复率,获得了满意的疗效。
