The performance of an electrocatalyst is closely correlated with the binding strength of key oxygencontaining intermediates,i.e.,*OOH,*O and*OH,in the oxygen reduction reaction(ORR)and oxygen evolution reaction(OER).F...The performance of an electrocatalyst is closely correlated with the binding strength of key oxygencontaining intermediates,i.e.,*OOH,*O and*OH,in the oxygen reduction reaction(ORR)and oxygen evolution reaction(OER).Facile strategies to achieve favorable binding strength of these oxygen-containing species are urgently demanded,yet it still remains great challenges.Herein,the Zn-Co bimetallic isolation,which serves as an ideal model,is studied systematically by the density functional theory(DFT).Reaction activity volcano plots are built from 48 models,among them the ZnCoN6-gra(I)configuration is confirmed to be the most stable,featured of the strongest interaction with the oxygen-containing species.Optimal △G*O(free energy change of an atomic oxygen containing intermediate)is facilitated,which effectively drifts the volcano peaks of ORR and OER closer to each other,enabling promising bifunctional catalyst.Moreover,the small overpotential in the simulation of protonation and oxidation by hydroxy groups rationalizes the durability of the catalyst in both acid and alkaline media.展开更多
Purpose:The purpose of this paper is to explore how libraries can develop service and product strategies and the service support mechanism to provide industrial technology information service in science parks.Design/m...Purpose:The purpose of this paper is to explore how libraries can develop service and product strategies and the service support mechanism to provide industrial technology information service in science parks.Design/methodology/approach:The analysis is based on a case study of a large Chinese research library,National Science Library(NSL),the Chinese Academy of Sciences(CAS),in serving high-tech companies in Zhongguancun Science Park(Z-Park).Findings:NSL’s practices suggested that in serving business clients,libraries’ product and service strategies should be based on the understanding of users’ needs.Aside from those services that have been recognized by clients such as document retrieval & delivery and novelty search,libraries may expand their service and provide in-depth information analysis and consultation for some key clients.Moreover,a service and product development system should be established,which differentiates the libraries’ products and services from those of their competitors.In providing industrial technology information service,libraries need to construct the service support mechanism,publicize their service and learn to cooperate with clients to meet their demands for knowledge management and innovation.Research limitations:The generalizability of the findings is limited because they are based on an individual case study.Practical implications:Our service practices provide useful information for other libraries to expand their information service to high-tech companies in the new information environment.Originality/value:Z-Park is the first and one of the largest science and technology parks in China.Hence NSL’s practices in serving high-tech companies in Z-Park can be valuable to other libraries that intend to take up the similar service.展开更多
Purpose: By case studies of the service for regional economic development(SRED) carried out by the National Science Library of the Chinese Academy of Sciences(NSLC), this article tries to describe basic directions of ...Purpose: By case studies of the service for regional economic development(SRED) carried out by the National Science Library of the Chinese Academy of Sciences(NSLC), this article tries to describe basic directions of special libraries in the SRED.Design/methodology/approach: By comparing the aims and service forms of the SRED provided by domestic and foreign libraries and information service institutions, the authors examined the basic services provided by special libraries. Through a summary of the SRED exploration carried out by the NSLC, the authors introduce its main content, service methods, products, and service mechanisms. By analyzing the information needs of SRED users and summarizing users’ practical experiences of services, the authors propose a design for the SRED framework of the NSLC. In addition, the authors mention key points to be noticed during the process of service implementation, illustrating them with a number of selected SRED cases. The authors suggest that the SRED network and joint service mechanism are effective ways to implement SRED services. Findings: Based on information resource and expert networks, special libraries like the NSLC can carry out SRED to meet user requirements. The NSLC has not only constructed its own SRED framework, but has also expanded the patron service to the industrial intelligence service area. By setting up a nationwide S&T;(science and technology) novelty search network and a literature and information service alliance, the NSLC provides a variety of information training services. This enriches the content of the knowledge service of special libraries and enlarges the library service of the NSLC.Research limitations: The SRED of Chinese libraries is still in the exploratory stage. Questions as how to scientifically design service content and service modes, and how to establish a sustainable regional service system based on user needs are still being researchedand discussed. Furthermore, we need to pay more attention to the construction of the service network and respond more quickly to feedback while creating the SRED.Practical implications: The SRED experience of the NSLC has shown that special libraries can implement a knowledge service for economic development, and the SRED is an important direction of knowledge services for special libraries.Originality/value: Through describing a practical SRED, this paper provides a valuable reference for libraries in the transformation process from library service to knowledge service. The experimental SRED of the NSLC has verified the rationality of our service framework in support of regional economic development.展开更多
Background:Minimally invasive surgeries are increasingly central to modern medicine,particularly in liver transplantation.These techniques,which offer reduced trauma,precise operations,minimal bleeding,and swift recov...Background:Minimally invasive surgeries are increasingly central to modern medicine,particularly in liver transplantation.These techniques,which offer reduced trauma,precise operations,minimal bleeding,and swift recovery,are,however,unevenly adopted across China.Only a limited number of centers routinely perform minimally invasive donor hepatectomies,indicating a significant imbalance in the development and application of these advanced procedures.Additionally,there lacks a set of standardized guidelines that are tailored to meet China’s unique healthcare challenges and conditions.Methods:In August 2023,the Branch of Organ Transplant of Chinese Medical Association and the Branch of Organ Transplant Physicians of Chinese Medical Doctor Association convened a group of national liver transplantation experts to establish a guideline development committee.This committee conducted a thorough review of relevant literature,evaluated existing guidelines and consensus,and assessed factors such as the evidence base,patient preferences,and the cost-effectiveness of interventions within China.After multiple rounds of discussions,both online and offline,the committee finalized the guidelines.Results:This collaborative effort led to the creation of the“Chinese guidelines for minimally invasive donor hepatectomy in living donor liver transplantation(2024 edition)”.These guidelines address crucial aspects such as the safety and advantages of minimally invasive surgery for living donor liver transplantation,donor selection criteria,anesthesia strategies,surgical technical details,and learning curves associated with these procedures,resulting in a comprehensive set of 26 recommendations.Conclusions:The formulation of these guidelines represents a significant advancement towards standardizing minimally invasive liver transplantation surgeries in China.They are designed to enhance outcomes for both donors and recipients by synthesizing expert consensus with contemporary research and clinical practices.Moreover,they serve as a crucial reference for surgeons and medical institutions,promoting the refinement and adoption of minimally invasive surgical techniques in liver transplantation.展开更多
基金the National Natural Science Foundation of China(No.21403185 and 51774251)the Hebei Natural Science Foundation for Distinguished Young Scholars(B2017203313)the Hundred Excellent Innovative Talents Support Program in Hebei Province(SLRC2017057)for financial support。
文摘The performance of an electrocatalyst is closely correlated with the binding strength of key oxygencontaining intermediates,i.e.,*OOH,*O and*OH,in the oxygen reduction reaction(ORR)and oxygen evolution reaction(OER).Facile strategies to achieve favorable binding strength of these oxygen-containing species are urgently demanded,yet it still remains great challenges.Herein,the Zn-Co bimetallic isolation,which serves as an ideal model,is studied systematically by the density functional theory(DFT).Reaction activity volcano plots are built from 48 models,among them the ZnCoN6-gra(I)configuration is confirmed to be the most stable,featured of the strongest interaction with the oxygen-containing species.Optimal △G*O(free energy change of an atomic oxygen containing intermediate)is facilitated,which effectively drifts the volcano peaks of ORR and OER closer to each other,enabling promising bifunctional catalyst.Moreover,the small overpotential in the simulation of protonation and oxidation by hydroxy groups rationalizes the durability of the catalyst in both acid and alkaline media.
基金supported by the research project sponsored by the Administrative Committee of Zhongguancun Science Park
文摘Purpose:The purpose of this paper is to explore how libraries can develop service and product strategies and the service support mechanism to provide industrial technology information service in science parks.Design/methodology/approach:The analysis is based on a case study of a large Chinese research library,National Science Library(NSL),the Chinese Academy of Sciences(CAS),in serving high-tech companies in Zhongguancun Science Park(Z-Park).Findings:NSL’s practices suggested that in serving business clients,libraries’ product and service strategies should be based on the understanding of users’ needs.Aside from those services that have been recognized by clients such as document retrieval & delivery and novelty search,libraries may expand their service and provide in-depth information analysis and consultation for some key clients.Moreover,a service and product development system should be established,which differentiates the libraries’ products and services from those of their competitors.In providing industrial technology information service,libraries need to construct the service support mechanism,publicize their service and learn to cooperate with clients to meet their demands for knowledge management and innovation.Research limitations:The generalizability of the findings is limited because they are based on an individual case study.Practical implications:Our service practices provide useful information for other libraries to expand their information service to high-tech companies in the new information environment.Originality/value:Z-Park is the first and one of the largest science and technology parks in China.Hence NSL’s practices in serving high-tech companies in Z-Park can be valuable to other libraries that intend to take up the similar service.
基金supported by the National Science Library of the Chinese Acedemy of Sciencesthe Bureau of Development and Planning of the Chinese Academy of Sciences
文摘Purpose: By case studies of the service for regional economic development(SRED) carried out by the National Science Library of the Chinese Academy of Sciences(NSLC), this article tries to describe basic directions of special libraries in the SRED.Design/methodology/approach: By comparing the aims and service forms of the SRED provided by domestic and foreign libraries and information service institutions, the authors examined the basic services provided by special libraries. Through a summary of the SRED exploration carried out by the NSLC, the authors introduce its main content, service methods, products, and service mechanisms. By analyzing the information needs of SRED users and summarizing users’ practical experiences of services, the authors propose a design for the SRED framework of the NSLC. In addition, the authors mention key points to be noticed during the process of service implementation, illustrating them with a number of selected SRED cases. The authors suggest that the SRED network and joint service mechanism are effective ways to implement SRED services. Findings: Based on information resource and expert networks, special libraries like the NSLC can carry out SRED to meet user requirements. The NSLC has not only constructed its own SRED framework, but has also expanded the patron service to the industrial intelligence service area. By setting up a nationwide S&T;(science and technology) novelty search network and a literature and information service alliance, the NSLC provides a variety of information training services. This enriches the content of the knowledge service of special libraries and enlarges the library service of the NSLC.Research limitations: The SRED of Chinese libraries is still in the exploratory stage. Questions as how to scientifically design service content and service modes, and how to establish a sustainable regional service system based on user needs are still being researchedand discussed. Furthermore, we need to pay more attention to the construction of the service network and respond more quickly to feedback while creating the SRED.Practical implications: The SRED experience of the NSLC has shown that special libraries can implement a knowledge service for economic development, and the SRED is an important direction of knowledge services for special libraries.Originality/value: Through describing a practical SRED, this paper provides a valuable reference for libraries in the transformation process from library service to knowledge service. The experimental SRED of the NSLC has verified the rationality of our service framework in support of regional economic development.
基金supported by grants from National Key R&D Program of China(No.2022YFC2304705 to Jiayin Yang)National Natural Science Foundation of China(No.82270691 to Jiayin Yang)+2 种基金Sichuan Province Key Research and Development Project(Nos.2023YFS0026 and 23ZDYF2182 to Jiayin Yang)Chengdu Province Key Research and Development Project(No.2022YF0900009SN to Jiayin Yang)1.3.5 Project for Disciplines of Excellence from West China Hospital of Sichuan University(No.ZYGD24002 to Jiayin Yang).
文摘Background:Minimally invasive surgeries are increasingly central to modern medicine,particularly in liver transplantation.These techniques,which offer reduced trauma,precise operations,minimal bleeding,and swift recovery,are,however,unevenly adopted across China.Only a limited number of centers routinely perform minimally invasive donor hepatectomies,indicating a significant imbalance in the development and application of these advanced procedures.Additionally,there lacks a set of standardized guidelines that are tailored to meet China’s unique healthcare challenges and conditions.Methods:In August 2023,the Branch of Organ Transplant of Chinese Medical Association and the Branch of Organ Transplant Physicians of Chinese Medical Doctor Association convened a group of national liver transplantation experts to establish a guideline development committee.This committee conducted a thorough review of relevant literature,evaluated existing guidelines and consensus,and assessed factors such as the evidence base,patient preferences,and the cost-effectiveness of interventions within China.After multiple rounds of discussions,both online and offline,the committee finalized the guidelines.Results:This collaborative effort led to the creation of the“Chinese guidelines for minimally invasive donor hepatectomy in living donor liver transplantation(2024 edition)”.These guidelines address crucial aspects such as the safety and advantages of minimally invasive surgery for living donor liver transplantation,donor selection criteria,anesthesia strategies,surgical technical details,and learning curves associated with these procedures,resulting in a comprehensive set of 26 recommendations.Conclusions:The formulation of these guidelines represents a significant advancement towards standardizing minimally invasive liver transplantation surgeries in China.They are designed to enhance outcomes for both donors and recipients by synthesizing expert consensus with contemporary research and clinical practices.Moreover,they serve as a crucial reference for surgeons and medical institutions,promoting the refinement and adoption of minimally invasive surgical techniques in liver transplantation.
