Climate change poses a significant threat to global health.It exacerbates existing health challenges and generates new ones.Therefore,innovative solutions to mitigate and adapt to its adverse effects are urgently requ...Climate change poses a significant threat to global health.It exacerbates existing health challenges and generates new ones.Therefore,innovative solutions to mitigate and adapt to its adverse effects are urgently required.This article explores the potential of digital health technologies to address the challenge posed by climate change-related health issues.It discusses their dual functionality of diminishing the carbon footprint of healthcare services and increasing understanding and governance of climate-sensitive diseases.Notably,with advanced technologies such as Generative medical AI(GMAI)presenting environmental concerns like substantial energy consumption during data processing and the generation of electronic waste,it is essential to underscore the significance of their responsible development and implementation of these technologies.This will ensure that the benefits of digital health technologies can be maximized while minimizing their ecological drawbacks.This study,therefore propose,a framework for leveraging digital health technologies to support climate change adaptation,including disease surveillance,telemedicine,patient support systems,and public awareness campaigns.展开更多
1|THE FUTURE OF HEALTH IS DIGITAL.Digital health has shown significant promise in improving health outcomes.However,its transformation faces various challenges,including resource distribution disparities across countr...1|THE FUTURE OF HEALTH IS DIGITAL.Digital health has shown significant promise in improving health outcomes.However,its transformation faces various challenges,including resource distribution disparities across countries,varying definitions and standards for digital solutions,and a lack of coordination in digital health investments[1].展开更多
The“New Medical Education”is a new requirement for the development of medical education in the new era.As a key and core element of the construction of the“New Medical Education,”the engagement in teaching work of...The“New Medical Education”is a new requirement for the development of medical education in the new era.As a key and core element of the construction of the“New Medical Education,”the engagement in teaching work of university teachers is a key issue that determines the level of teaching development of university teachers and affects the quality of talent cultivation in universities.Using the literature review method,this study analyzed 39 relevant literatures retrieved from China National Knowledge Infrastructure(CNKI)from 1997 to 2023.The concept,connotation,current situation,influencing factors,and improvement strategies of teaching engagement by university teachers were reviewed and summarized.The results showed that the issue of teaching engagement by university teachers has not received high attention in the field of higher education,especially in higher medical education,which has not yet been reported.Although the overall number of literature is not large,some of the conclusions have important implications for the next research on the influencing factors and mechanisms of double-qualified teacher engagement in higher medical colleges.展开更多
Humanistic education,as the“internal structure”of medical education,attempts to cultivate medical students’humanistic knowledge,ability,and comprehensive quality as well as makes adjustments with the evolvement of ...Humanistic education,as the“internal structure”of medical education,attempts to cultivate medical students’humanistic knowledge,ability,and comprehensive quality as well as makes adjustments with the evolvement of medical education.The global medical education reform has undergone three stages:expert medicine,clinical practice medicine,and public service medicine.Public service medicine,which took place in the 21st century,is a system-based and competency-oriented education,highlighting the construction of a health service system with medical and educational cooperation as well as the cultivation of medical students’comprehensive quality.China’s medical education started late and has a weak foundation with many twists and turns.Through the rapid development of reform and opening-up,China has narrowed the gap with international medical education and established a perfect medical curriculum system.China has successively promulgated a number of documents,such as the“Outline of Reform and Development of Medical Education in China”and the“Opinions on Strengthening the Collaboration between Health Departments and Education Departments to Implement the Doctor of Excellence Education Training Program 2.0,”with the goal of cultivating high-quality excellent medical talents.Medical students in colleges and universities are senior talents in medical training,health care services,and medical research.Their humanistic quality is not only related to the growth of medical talents,but also the quality of medical services.This paper analyzes and discusses the problems encountered in improving humanistic education and looks forward to providing reasonable as well as effective solutions to the difficulties faced by humanistic education in the new era through comparative research.展开更多
With the continuous expansion of medical student enrollment,the number of clinical teaching bases is gradually increasing.However,there are significant differences in clinical teaching management models and teaching l...With the continuous expansion of medical student enrollment,the number of clinical teaching bases is gradually increasing.However,there are significant differences in clinical teaching management models and teaching levels among different bases.Most clinical teaching bases have incomplete teaching management systems,inadequate teaching management institutions,insufficient teaching personnel,and inadequate implementation of teaching rules and regulations.This article combines the construction practice of three-level clinical teaching base of the General Medicine College and the First Affiliated Hospital of Xi’an Medical University.We establish a standardized management system for the three-level clinical teaching base;implement a teaching supervision system and strengthen the monitoring of teaching quality;adopt multiple evaluations to test the effectiveness of clinical teaching implementation;explore the path of homogenization construction of teaching bases in terms of unified teacher training,promoting the development of teacher teaching abilities with equal quality and excellence,and providing a reference for improving the quality of medical talent training.展开更多
Correction The affiliation in the original publication(https://www.doi.org/10.26689/par.v8i2.6010)is incorrect.The original affiliation was:Yuqing Li1,Cuicui Ren1,Yu Cai2,Chang Tian2,Yuanyuan Jia2,Ge Wu1*1Xi’an Medic...Correction The affiliation in the original publication(https://www.doi.org/10.26689/par.v8i2.6010)is incorrect.The original affiliation was:Yuqing Li1,Cuicui Ren1,Yu Cai2,Chang Tian2,Yuanyuan Jia2,Ge Wu1*1Xi’an Medical University,Xi’an 710000,China 2Faculty Development and Teaching Evaluation Office,The First Affiliated Hospital of Xi’an。展开更多
The limited creep resistance of wrought Mg-Al alloys restricts their lightweight applications at intermediate temperatures due to the softening effect of discontinuous precipitation(DP)on the dislocation-controlled cr...The limited creep resistance of wrought Mg-Al alloys restricts their lightweight applications at intermediate temperatures due to the softening effect of discontinuous precipitation(DP)on the dislocation-controlled creep.Here,we developed a creep-resistant wrought Mg-Al alloy through microalloying of Y and Ca.The resulting alloy exhibited an order of magnitude enhancement in the creep resistance at 125℃/50±100 MPa.In contrast to the grain boundary instabilities by DP in the previously reported wrought Mg-Al alloys,we show that the addition of 0.21Y+0.15Ca wt%produces a(Zn+Ca)co-segregation at the grain boundaries as a result of their segregation energy and the activation energy of grain boundary migration,thereby stabilizing the grain boundaries.The(Zn+Ca)co-segregation inhibits the dynamic DP and promotes the formation of intragranular Al-enriched clusters,which favorthe formation of Al_(2)Y,Mg_(17)Al_(12)nano precipitates,thereby impeding intragranular dislocation motion during creep.Furthermore,the addition of 0.21Y+0.15Ca wt%facilitates the formation of a fine and uniform recrystallization structure in the microalloyed alloys compared to AZ80 due to the high activation energy of mobility for the(Zn+Ca)segregated grain boundary.Therefore,the microalloyed alloys exhibit good tensile properties with 380 MPa tensile strength and 18%elongation.Our constitutive analysis revealed that the(Y+Ca)microalloying decreased the creep stress exponent by 29%and increased the creep resistance in the medium to high-stress range.Microalloying provides a promising way to develop low-cost creep-resistant wrought Mg-Al alloys.展开更多
Background:As medical advancements continue and public health levels rise,increasing attention is being paid to the diagnosis and treatment of rare diseases.Given its large population,China's efforts in enhancing ...Background:As medical advancements continue and public health levels rise,increasing attention is being paid to the diagnosis and treatment of rare diseases.Given its large population,China's efforts in enhancing overall clinical abilities for rare disease diagnosis and treatment are crucial.However,young physicians still face significant challenges in their professional capabilities in this field.Methods:Based on interviews with young physicians and medical education experts from rare disease diagnosis and research institutions,this study explored systematic approaches to cultivating and enhancing the expertise of young Chinese physicians in rare disease diagnosis and treatment,along with the necessary support systems.Results:By thematic analysis,we identified six effective training models:(1)mentorship teaching,(2)specialized training systems,(3)integration of rare disease knowledge into standard curricula,(4)continuous education and career path planning,(5)application of information technology,and(6)institution‐supported international collaboration.We also discussed critical implementation challenges such as resource intensity and interdisciplinary friction.Conclusion:Based on these findings,we proposed a series of targeted strategies and recommendations.This study provided valuable experiences for young physicians in clinical and research institutions nationwide,thereby improving the overall level of rare disease diagnosis and treatment.展开更多
The design of efficient and low-cost multifunctional electrocatalysts for hydrogen evolution reaction(HER), oxygen evolution reaction(OER) and oxygen reduction reaction(ORR) is critical for the development of clean en...The design of efficient and low-cost multifunctional electrocatalysts for hydrogen evolution reaction(HER), oxygen evolution reaction(OER) and oxygen reduction reaction(ORR) is critical for the development of clean energy. Two-dimensional(2D) carbon-based nano-materials are becoming more and more popular in heterogeneous catalysis due to their cost-effective and multi-scale tunability as single-atom catalysis(SACs) substrates. In this paper, by using first-principles calculation, we designed and demonstrated a novel macropore T-carbon [110](TC) monolayer as 2D electrocatalyst substrate for HER/OER/ORR, and the synergistic modification of the transition metal and nonmetal atoms(TM-X) were investigated to enhance the multifunctional electrocatalytic performance. We screened out the Co embedded in N-doped TC(Co3@N-TC) from 30 TM@X-TC monolayers as a trifunctional electrocatalysts, which exhibits superior performance for HER/ORR/OER on both thermodynamic and kinetic scales, and with excellent thermal and electrochemical stability. Then, the TC monolayer is naturally macropore with a diameter of 5.36 A and exhibits excellent adsorption capacity for the intermediates and products of the redox reactions. Moreover, we revealed the origin of the electrocatalytic activity using the crystal orbital Hamilton population(COHP) and the molecular orbitals(MOs). The d orbital of Co3@N-TC is significantly hybridized with the p orbital of the intermediates, so that the lone electrons initially occupied in the antibonding state pair up and occupy the downward bonding state, allowing *OH to be appropriately adsorbed onto the TC monolayer. This work not only demonstrates that the TM@X-TC monolayer is a superior synergistic trifunctional electrocatalyst, but also reveals a macropore monolayer material with potential applications in electrocatalysis.展开更多
This study analyzes the misperceptions of the Chinese public about air pollution levels and other potential predictors of participation in pro-environmental behaviors based on the 2013 Chinese General Social Survey(CG...This study analyzes the misperceptions of the Chinese public about air pollution levels and other potential predictors of participation in pro-environmental behaviors based on the 2013 Chinese General Social Survey(CGSS).In this paper,misperception is defined as the difference between subjective perceptions of air pollution and measurements through objective monitoring.We find that pessimistic respondents are more likely to participate in pro-environmental behaviors.The media use and evaluation of the environmental performance of the local government significantly stimulate pro-environmental participation.The results reveal that knowledge and concern about the environment can mitigate the negative effect of optimistic bias on pro-environmental behaviors.In regions where environmental information is widely available,environmental pessimists are especially more likely to participate in such activities.This finding suggests that the government should provide not only accurate information about environmental pollution but also relevant education to enhance the environmental awareness of the public and stimulate pro-environmental participation.展开更多
Dual-phase metallic glasses(DP-MGs),a special member of the MGs family,often reveal unusual strength and ductility,yet,their corrosion behaviors are not understood.Here,we developed a nanostructured Mg_(57)Zn_(36)Ca_(...Dual-phase metallic glasses(DP-MGs),a special member of the MGs family,often reveal unusual strength and ductility,yet,their corrosion behaviors are not understood.Here,we developed a nanostructured Mg_(57)Zn_(36)Ca_(7)(at.%)DP-MG and uncovered its corrosion mechanism in simulated body fluid(SBF)at the near-atomic scale utilizing transmission electron microscope(TEM)and atom probe tomography(APT).The 10-nm-wide Ca-rich amorphous phases allow oxygen propagation into the DP-MG,resulting in a micrometer thick hydroxides/oxides layer.This dense corrosion layer protects the DP-MG from further corrosion,enabling a corrosion rate that is 77%lower than that of Mg(99.99%purity).展开更多
The understanding of soliton dynamics promotes the development of ultrafast laser technology. High-energy purequartic solitons(PQSs) have gradually become a hotspot in recent years. Herein, we numerically study the in...The understanding of soliton dynamics promotes the development of ultrafast laser technology. High-energy purequartic solitons(PQSs) have gradually become a hotspot in recent years. Herein, we numerically study the influence of the gain bandwidth, saturation power, small-signal gain, and output coupler on PQS dynamics in passively mode-locked fiber lasers. The results show that the above four parameters can affect PQS dynamics. Pulsating PQSs occur as we alter the other three parameters when the gain bandwidth is 50 nm. Meanwhile, PQSs evolve from pulsating to erupting and then to splitting as the other three parameters are altered when the gain bandwidth is 10 nm, which can be attributed to the existence of the spectral filtering effect and intra-cavity fourth-order dispersion. These findings provide new insights into PQS dynamics in passively mode-locked fiber lasers.展开更多
Structured illumination-based super-resolution Förster resonance energy transfer microscopy(SIM-FRET)provides an approach to resolving molecular behavior localized in intricate biological structures in living cel...Structured illumination-based super-resolution Förster resonance energy transfer microscopy(SIM-FRET)provides an approach to resolving molecular behavior localized in intricate biological structures in living cells.However,SIM reconstruction artifacts will decrease the quantitative analysis fidelity of SIMFRET signals.To address these issues,we have developed a method called HiFi spectrum optimization SIM-FRET(HiFi-SO-SIM-FRET),which uses optimized Wiener parameters in the two-step spectrum optimization to suppress sidelobe artifacts and achieve super-resolution quantitative SIM-FRET.We validated our method by demonstrating its ability to reduce reconstruction artifacts while maintaining the accuracy of FRET signals in both simulated FRET models and live-cell FRET-standard construct samples.In summary,HiFi-SO-SIM-FRET provides a promising solution for achieving high spatial resolution and reducing SIM reconstruction artifacts in quantitative FRET imaging.展开更多
A novel and efficient copper-catalyzed decarboxylative alkynylselenation of indoles with Se powder and propiolic acids has been developed.The outstanding advantages of this protocol not only nicely avoid the use of pr...A novel and efficient copper-catalyzed decarboxylative alkynylselenation of indoles with Se powder and propiolic acids has been developed.The outstanding advantages of this protocol not only nicely avoid the use of prefabricated arylselenation reagent and address the facile over-selention issues,but also enrich the chemistry of selenium powder.Importantly,this reaction could be extended to pyrrole,and the practical utility of this transformation has been demonstrated in gram-scale synthesis and late-stage indolylselenation of Clofibrate-derived propiolic acid.展开更多
基金supported by the Science and Technology Innovation 2030 Major Project(2023ZD0508506)National Key Research and Development Program of China(2022YFC2305104).
文摘Climate change poses a significant threat to global health.It exacerbates existing health challenges and generates new ones.Therefore,innovative solutions to mitigate and adapt to its adverse effects are urgently required.This article explores the potential of digital health technologies to address the challenge posed by climate change-related health issues.It discusses their dual functionality of diminishing the carbon footprint of healthcare services and increasing understanding and governance of climate-sensitive diseases.Notably,with advanced technologies such as Generative medical AI(GMAI)presenting environmental concerns like substantial energy consumption during data processing and the generation of electronic waste,it is essential to underscore the significance of their responsible development and implementation of these technologies.This will ensure that the benefits of digital health technologies can be maximized while minimizing their ecological drawbacks.This study,therefore propose,a framework for leveraging digital health technologies to support climate change adaptation,including disease surveillance,telemedicine,patient support systems,and public awareness campaigns.
基金The Science and Technology Innovation 2030 Major Project,Grant/Award Number:2023ZD0508506National Key Research and Development Program of China,Grant/Award Numbers:2022YFC2705001,2023YFC2706305。
文摘1|THE FUTURE OF HEALTH IS DIGITAL.Digital health has shown significant promise in improving health outcomes.However,its transformation faces various challenges,including resource distribution disparities across countries,varying definitions and standards for digital solutions,and a lack of coordination in digital health investments[1].
基金2022 Education and Teaching Reform Research Project of Xi’an Medical University,“Construction and Practice of Teaching Quality Assurance System in Three-Level Teaching Bases of General Practice Medicine Under the‘Internet+’Model”(Project number:2022JG-05)2021 Shaanxi Undergraduate and Higher Continuing Education Teaching Reform Research Project of Shaanxi Provincial Department of Education,“Construction of Teaching Staff Based on‘Online Learning Platform for Clinical Teachers of the First Affiliated Hospital of Xi’an Medical University’and Construction and Practice of Quality Assurance System”(Project number:21BZ066)。
文摘The“New Medical Education”is a new requirement for the development of medical education in the new era.As a key and core element of the construction of the“New Medical Education,”the engagement in teaching work of university teachers is a key issue that determines the level of teaching development of university teachers and affects the quality of talent cultivation in universities.Using the literature review method,this study analyzed 39 relevant literatures retrieved from China National Knowledge Infrastructure(CNKI)from 1997 to 2023.The concept,connotation,current situation,influencing factors,and improvement strategies of teaching engagement by university teachers were reviewed and summarized.The results showed that the issue of teaching engagement by university teachers has not received high attention in the field of higher education,especially in higher medical education,which has not yet been reported.Although the overall number of literature is not large,some of the conclusions have important implications for the next research on the influencing factors and mechanisms of double-qualified teacher engagement in higher medical colleges.
基金2021 Shaanxi Undergraduate and Higher Continuing Education Teaching Reform Research Project of Shaanxi Provincial Department of Education,“Construction of Teaching Staff Based on‘Online Learning Platform for Clinical Teachers of the First Affiliated Hospital of Xi’an Medical University’and Construction and Practice of Quality Assurance System”(Project Number:21BZ066)2020 Education and Teaching Reform Research Project of Xi’an Medical University,“Construction of‘Double-Qualified’Teachers in Affiliated Hospitals Based on‘Online Learning Platform for Clinical Teachers’and Construction and Practice of Quality Assurance System”(Project Number:2020JG-02).
文摘Humanistic education,as the“internal structure”of medical education,attempts to cultivate medical students’humanistic knowledge,ability,and comprehensive quality as well as makes adjustments with the evolvement of medical education.The global medical education reform has undergone three stages:expert medicine,clinical practice medicine,and public service medicine.Public service medicine,which took place in the 21st century,is a system-based and competency-oriented education,highlighting the construction of a health service system with medical and educational cooperation as well as the cultivation of medical students’comprehensive quality.China’s medical education started late and has a weak foundation with many twists and turns.Through the rapid development of reform and opening-up,China has narrowed the gap with international medical education and established a perfect medical curriculum system.China has successively promulgated a number of documents,such as the“Outline of Reform and Development of Medical Education in China”and the“Opinions on Strengthening the Collaboration between Health Departments and Education Departments to Implement the Doctor of Excellence Education Training Program 2.0,”with the goal of cultivating high-quality excellent medical talents.Medical students in colleges and universities are senior talents in medical training,health care services,and medical research.Their humanistic quality is not only related to the growth of medical talents,but also the quality of medical services.This paper analyzes and discusses the problems encountered in improving humanistic education and looks forward to providing reasonable as well as effective solutions to the difficulties faced by humanistic education in the new era through comparative research.
基金2022 Education and Teaching Reform Research Project of Xi’an Medical University“Construction and Practice of the Teaching Quality Assurance System in the Three-Level Teaching Base of General Practice Medicine Under the Internet+Model”(Project number:2022JG-05)。
文摘With the continuous expansion of medical student enrollment,the number of clinical teaching bases is gradually increasing.However,there are significant differences in clinical teaching management models and teaching levels among different bases.Most clinical teaching bases have incomplete teaching management systems,inadequate teaching management institutions,insufficient teaching personnel,and inadequate implementation of teaching rules and regulations.This article combines the construction practice of three-level clinical teaching base of the General Medicine College and the First Affiliated Hospital of Xi’an Medical University.We establish a standardized management system for the three-level clinical teaching base;implement a teaching supervision system and strengthen the monitoring of teaching quality;adopt multiple evaluations to test the effectiveness of clinical teaching implementation;explore the path of homogenization construction of teaching bases in terms of unified teacher training,promoting the development of teacher teaching abilities with equal quality and excellence,and providing a reference for improving the quality of medical talent training.
文摘Correction The affiliation in the original publication(https://www.doi.org/10.26689/par.v8i2.6010)is incorrect.The original affiliation was:Yuqing Li1,Cuicui Ren1,Yu Cai2,Chang Tian2,Yuanyuan Jia2,Ge Wu1*1Xi’an Medical University,Xi’an 710000,China 2Faculty Development and Teaching Evaluation Office,The First Affiliated Hospital of Xi’an。
基金financial support from the National Natural Science Foundation of China(No:52061040,No:52371121,No:52031011)China Postdoctoral Science Foundation(No:2021M692512)the 2020 open projects(No:KLATM202003)of Key Laboratory of Advanced Technologies of Materials,Ministry of Education China,Southwest Jiaotong University。
文摘The limited creep resistance of wrought Mg-Al alloys restricts their lightweight applications at intermediate temperatures due to the softening effect of discontinuous precipitation(DP)on the dislocation-controlled creep.Here,we developed a creep-resistant wrought Mg-Al alloy through microalloying of Y and Ca.The resulting alloy exhibited an order of magnitude enhancement in the creep resistance at 125℃/50±100 MPa.In contrast to the grain boundary instabilities by DP in the previously reported wrought Mg-Al alloys,we show that the addition of 0.21Y+0.15Ca wt%produces a(Zn+Ca)co-segregation at the grain boundaries as a result of their segregation energy and the activation energy of grain boundary migration,thereby stabilizing the grain boundaries.The(Zn+Ca)co-segregation inhibits the dynamic DP and promotes the formation of intragranular Al-enriched clusters,which favorthe formation of Al_(2)Y,Mg_(17)Al_(12)nano precipitates,thereby impeding intragranular dislocation motion during creep.Furthermore,the addition of 0.21Y+0.15Ca wt%facilitates the formation of a fine and uniform recrystallization structure in the microalloyed alloys compared to AZ80 due to the high activation energy of mobility for the(Zn+Ca)segregated grain boundary.Therefore,the microalloyed alloys exhibit good tensile properties with 380 MPa tensile strength and 18%elongation.Our constitutive analysis revealed that the(Y+Ca)microalloying decreased the creep stress exponent by 29%and increased the creep resistance in the medium to high-stress range.Microalloying provides a promising way to develop low-cost creep-resistant wrought Mg-Al alloys.
基金the National Key Research and Development Program of China(2023YFC2706305).
文摘Background:As medical advancements continue and public health levels rise,increasing attention is being paid to the diagnosis and treatment of rare diseases.Given its large population,China's efforts in enhancing overall clinical abilities for rare disease diagnosis and treatment are crucial.However,young physicians still face significant challenges in their professional capabilities in this field.Methods:Based on interviews with young physicians and medical education experts from rare disease diagnosis and research institutions,this study explored systematic approaches to cultivating and enhancing the expertise of young Chinese physicians in rare disease diagnosis and treatment,along with the necessary support systems.Results:By thematic analysis,we identified six effective training models:(1)mentorship teaching,(2)specialized training systems,(3)integration of rare disease knowledge into standard curricula,(4)continuous education and career path planning,(5)application of information technology,and(6)institution‐supported international collaboration.We also discussed critical implementation challenges such as resource intensity and interdisciplinary friction.Conclusion:Based on these findings,we proposed a series of targeted strategies and recommendations.This study provided valuable experiences for young physicians in clinical and research institutions nationwide,thereby improving the overall level of rare disease diagnosis and treatment.
基金supported by the Natural Science Basic Research Program of Shaanxi (No. 2023-JC-YB-065)the Fund of State Key Laboratory of IPOC(BUPT)(No. IPOC2019A013)+2 种基金the Natural Science Foundation of Shaanxi Province (No. 2021JM-371)the Open-Foundation of Key Laboratory of Laser Device Technology,China North Industries Group Corporation Limited (No. KLLDT202103)the Project funded by China Postdoctoral Science Foundation(No. 2022M720516)。
文摘The design of efficient and low-cost multifunctional electrocatalysts for hydrogen evolution reaction(HER), oxygen evolution reaction(OER) and oxygen reduction reaction(ORR) is critical for the development of clean energy. Two-dimensional(2D) carbon-based nano-materials are becoming more and more popular in heterogeneous catalysis due to their cost-effective and multi-scale tunability as single-atom catalysis(SACs) substrates. In this paper, by using first-principles calculation, we designed and demonstrated a novel macropore T-carbon [110](TC) monolayer as 2D electrocatalyst substrate for HER/OER/ORR, and the synergistic modification of the transition metal and nonmetal atoms(TM-X) were investigated to enhance the multifunctional electrocatalytic performance. We screened out the Co embedded in N-doped TC(Co3@N-TC) from 30 TM@X-TC monolayers as a trifunctional electrocatalysts, which exhibits superior performance for HER/ORR/OER on both thermodynamic and kinetic scales, and with excellent thermal and electrochemical stability. Then, the TC monolayer is naturally macropore with a diameter of 5.36 A and exhibits excellent adsorption capacity for the intermediates and products of the redox reactions. Moreover, we revealed the origin of the electrocatalytic activity using the crystal orbital Hamilton population(COHP) and the molecular orbitals(MOs). The d orbital of Co3@N-TC is significantly hybridized with the p orbital of the intermediates, so that the lone electrons initially occupied in the antibonding state pair up and occupy the downward bonding state, allowing *OH to be appropriately adsorbed onto the TC monolayer. This work not only demonstrates that the TM@X-TC monolayer is a superior synergistic trifunctional electrocatalyst, but also reveals a macropore monolayer material with potential applications in electrocatalysis.
文摘This study analyzes the misperceptions of the Chinese public about air pollution levels and other potential predictors of participation in pro-environmental behaviors based on the 2013 Chinese General Social Survey(CGSS).In this paper,misperception is defined as the difference between subjective perceptions of air pollution and measurements through objective monitoring.We find that pessimistic respondents are more likely to participate in pro-environmental behaviors.The media use and evaluation of the environmental performance of the local government significantly stimulate pro-environmental participation.The results reveal that knowledge and concern about the environment can mitigate the negative effect of optimistic bias on pro-environmental behaviors.In regions where environmental information is widely available,environmental pessimists are especially more likely to participate in such activities.This finding suggests that the government should provide not only accurate information about environmental pollution but also relevant education to enhance the environmental awareness of the public and stimulate pro-environmental participation.
基金partially supported by Shenzhen-Hong Kong Science and Technology Innovation Cooperation Zone Shenzhen Park Project:HZQB-KCZYB-2020030Hong Kong Research Grants Council Collaborative Research Fund(Ref.C4026-17 W)+2 种基金Theme-based Research Scheme(Ref.T13402/17-N)funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No 958457supported by the City U grant 9360161 and CRF grant C1027-14E。
文摘Dual-phase metallic glasses(DP-MGs),a special member of the MGs family,often reveal unusual strength and ductility,yet,their corrosion behaviors are not understood.Here,we developed a nanostructured Mg_(57)Zn_(36)Ca_(7)(at.%)DP-MG and uncovered its corrosion mechanism in simulated body fluid(SBF)at the near-atomic scale utilizing transmission electron microscope(TEM)and atom probe tomography(APT).The 10-nm-wide Ca-rich amorphous phases allow oxygen propagation into the DP-MG,resulting in a micrometer thick hydroxides/oxides layer.This dense corrosion layer protects the DP-MG from further corrosion,enabling a corrosion rate that is 77%lower than that of Mg(99.99%purity).
基金the financial support from Science and Technology Project of the Jilin Provincial Department of Education (Grant No. JJKH20231171KJ)。
文摘The understanding of soliton dynamics promotes the development of ultrafast laser technology. High-energy purequartic solitons(PQSs) have gradually become a hotspot in recent years. Herein, we numerically study the influence of the gain bandwidth, saturation power, small-signal gain, and output coupler on PQS dynamics in passively mode-locked fiber lasers. The results show that the above four parameters can affect PQS dynamics. Pulsating PQSs occur as we alter the other three parameters when the gain bandwidth is 50 nm. Meanwhile, PQSs evolve from pulsating to erupting and then to splitting as the other three parameters are altered when the gain bandwidth is 10 nm, which can be attributed to the existence of the spectral filtering effect and intra-cavity fourth-order dispersion. These findings provide new insights into PQS dynamics in passively mode-locked fiber lasers.
基金supported by the National Natural Science Foundation of China(Grant No.62135003)Key-Area Research and Development Program of Guangdong Province(Grant No.2022B0303040003).
文摘Structured illumination-based super-resolution Förster resonance energy transfer microscopy(SIM-FRET)provides an approach to resolving molecular behavior localized in intricate biological structures in living cells.However,SIM reconstruction artifacts will decrease the quantitative analysis fidelity of SIMFRET signals.To address these issues,we have developed a method called HiFi spectrum optimization SIM-FRET(HiFi-SO-SIM-FRET),which uses optimized Wiener parameters in the two-step spectrum optimization to suppress sidelobe artifacts and achieve super-resolution quantitative SIM-FRET.We validated our method by demonstrating its ability to reduce reconstruction artifacts while maintaining the accuracy of FRET signals in both simulated FRET models and live-cell FRET-standard construct samples.In summary,HiFi-SO-SIM-FRET provides a promising solution for achieving high spatial resolution and reducing SIM reconstruction artifacts in quantitative FRET imaging.
基金Financial support from the National Natural Science Foundation of China(Nos.81803484,21602158)Zhejiang Provincial Natural Science Foundation(No.LY19B020011)Public Welfare Science and Technology Project of Wenzhou(Nos.Y20190132,Y20180233)are greatly appreciated.
文摘A novel and efficient copper-catalyzed decarboxylative alkynylselenation of indoles with Se powder and propiolic acids has been developed.The outstanding advantages of this protocol not only nicely avoid the use of prefabricated arylselenation reagent and address the facile over-selention issues,but also enrich the chemistry of selenium powder.Importantly,this reaction could be extended to pyrrole,and the practical utility of this transformation has been demonstrated in gram-scale synthesis and late-stage indolylselenation of Clofibrate-derived propiolic acid.
