The strategic design of single-atom catalysts and a detailed understanding of the synergistic interactions between metal sites and substrates are crucial for identifying the true active sites and elucidating cat-alyti...The strategic design of single-atom catalysts and a detailed understanding of the synergistic interactions between metal sites and substrates are crucial for identifying the true active sites and elucidating cat-alytic mechanisms at the atomic level.These insights are essential for advancing the development of high-performance catalysts for various industrial applications.Ruthenium single-atom-doped nickel sul-fide(Ru-Ni_(3)S_(2)/NF)nanosheet arrays were purposefully engineered and directly synthesized onto nickel foam,enabling dynamic catalyst reconstruction and establishing a robust three-dimensional structure,in this study.The catalyst exhibits exceptional performance,achieving a current density of 10 mA cm^(-2) with remarkably low overpotentials of 36 mV for hydrogen evolution reaction(HER)and 207 mV for oxygen evolution reaction(OER).Additionally,a custom-designed anion exchange membrane water electrolyzer(AEMWE)utilizing Ru-Ni_(3)S_(2)/NF as both the anode and cathode demonstrates superior water splitting performance,achieving a cell voltage of 1.67 V at a current density of 1 A cm^(-2).Theoretical analysis re-veals that Ru-Ni_(3)S_(2) undergoes rapid structural reconstruction during the OER process,forming a highly active Ru-Ni_(3)S_(2)/NiOOH phase,optimizing the adsorption and dissociation of water molecules,which sig-nificantly enhances kinetics.This work provided a promising reconstruction strategy to improve catalytic performance by combining low-cost sulfide materials with single-atom dispersing.It also offers valuable insights for the design of advanced electrocatalysts aimed at achieving high-performance water electrol-ysis.展开更多
AIM：To evaluate the functional and aesthetic outcomes of upper eyelid cicatricial entropion（UCE） correction using anterior lamellar recession（ALR） with addressing the associated conditions including dermatochalas...AIM：To evaluate the functional and aesthetic outcomes of upper eyelid cicatricial entropion（UCE） correction using anterior lamellar recession（ALR） with addressing the associated conditions including dermatochalasis,brow ptosis,blepharoptosis,and lid retraction.METHODS：Chart review of patients with upper lid cicatricial entropion who had undergone ALR from 2013 to 2016 was reviewed.Success was defi ned as the lack of any lash in contact with the globe,no need for a second procedure,and acceptable cosmesis at the fi nal follow up.RESULTS：Sixty eight patients（97 eyelids） were operated by ALR with simultaneous correction of associated lid problems in each case when necessary.The mean followup time was 17.8 mo（range,6.0-24.0 mo）.Concomitantly,levator tucking was performed in 19 eyelids（19.6%）,upper lid retractor recession in 18 eyelids（18.6%）,and internal browpexy in 31 eyelids（32.0%）.In 95.8% of patients（95%CI：0.85-0.96）,satisfactory functional and cosmetic outcome was achieved with a single surgical procedure.CONCLUSION：Based on the principles of lamellar recession and concurrently addressing the associated lid problems,this approach is an effective and safe treatment of UCE.展开更多
基金financially supported by the National Natural Science Foundation of China(No.22371110)the Innovative Re-search Team(in Science and Technology)in University of Henan Province(No.21HASTIT004).
文摘The strategic design of single-atom catalysts and a detailed understanding of the synergistic interactions between metal sites and substrates are crucial for identifying the true active sites and elucidating cat-alytic mechanisms at the atomic level.These insights are essential for advancing the development of high-performance catalysts for various industrial applications.Ruthenium single-atom-doped nickel sul-fide(Ru-Ni_(3)S_(2)/NF)nanosheet arrays were purposefully engineered and directly synthesized onto nickel foam,enabling dynamic catalyst reconstruction and establishing a robust three-dimensional structure,in this study.The catalyst exhibits exceptional performance,achieving a current density of 10 mA cm^(-2) with remarkably low overpotentials of 36 mV for hydrogen evolution reaction(HER)and 207 mV for oxygen evolution reaction(OER).Additionally,a custom-designed anion exchange membrane water electrolyzer(AEMWE)utilizing Ru-Ni_(3)S_(2)/NF as both the anode and cathode demonstrates superior water splitting performance,achieving a cell voltage of 1.67 V at a current density of 1 A cm^(-2).Theoretical analysis re-veals that Ru-Ni_(3)S_(2) undergoes rapid structural reconstruction during the OER process,forming a highly active Ru-Ni_(3)S_(2)/NiOOH phase,optimizing the adsorption and dissociation of water molecules,which sig-nificantly enhances kinetics.This work provided a promising reconstruction strategy to improve catalytic performance by combining low-cost sulfide materials with single-atom dispersing.It also offers valuable insights for the design of advanced electrocatalysts aimed at achieving high-performance water electrol-ysis.
文摘AIM：To evaluate the functional and aesthetic outcomes of upper eyelid cicatricial entropion（UCE） correction using anterior lamellar recession（ALR） with addressing the associated conditions including dermatochalasis,brow ptosis,blepharoptosis,and lid retraction.METHODS：Chart review of patients with upper lid cicatricial entropion who had undergone ALR from 2013 to 2016 was reviewed.Success was defi ned as the lack of any lash in contact with the globe,no need for a second procedure,and acceptable cosmesis at the fi nal follow up.RESULTS：Sixty eight patients（97 eyelids） were operated by ALR with simultaneous correction of associated lid problems in each case when necessary.The mean followup time was 17.8 mo（range,6.0-24.0 mo）.Concomitantly,levator tucking was performed in 19 eyelids（19.6%）,upper lid retractor recession in 18 eyelids（18.6%）,and internal browpexy in 31 eyelids（32.0%）.In 95.8% of patients（95%CI：0.85-0.96）,satisfactory functional and cosmetic outcome was achieved with a single surgical procedure.CONCLUSION：Based on the principles of lamellar recession and concurrently addressing the associated lid problems,this approach is an effective and safe treatment of UCE.
