The application of digital technology in prosthodontics not only improves the accuracy of restoration and the efficiency of diagnosis and treatment,but also brings more comfortable and convenient diagnosis and treatme...The application of digital technology in prosthodontics not only improves the accuracy of restoration and the efficiency of diagnosis and treatment,but also brings more comfortable and convenient diagnosis and treatment experience to patients.It effectively promotes the rapid development of the prosthodontic aesthetics industry and leads prosthodontic technology to gradually enter a new digital era.Combining the advantages of digital technology in prosthodontics,this paper focuses on the specific applications of digital impression technology,CAD/CAM technology,network-based integrated cloud service technology,and CBCT technology in prosthodontics.On this basis,it prospects the development trend of digital technology in the field of prosthodontics,aiming to provide solid theoretical and practical support for clinical practice of prosthodontics and promote the gradual integration of the prosthodontic industry with the digital era.展开更多
It has been over a decade since the first coded aperture video compressive sensing(CS)system was reported.The underlying principle of this technology is to employ a high-frequency modulator in the optical path to modu...It has been over a decade since the first coded aperture video compressive sensing(CS)system was reported.The underlying principle of this technology is to employ a high-frequency modulator in the optical path to modulate a recorded high-speed scene within one integration time.The superimposed image captured in this manner is modulated and compressed,since multiple modulation patterns are imposed.Following this,reconstruction algorithms are utilized to recover the desired high-speed scene.One leading advantage of video CS is that a single captured measurement can be used to reconstruct a multi-frame video,thereby enabling a low-speed camera to capture high-speed scenes.Inspired by this,a number of variants of video CS systems have been built,mainly using different modulation devices.Meanwhile,in order to obtain high-quality reconstruction videos,many algorithms have been developed,from optimization-based iterative algorithms to deep-learning-based ones.Recently,emerging deep learning methods have been dominant due to their high-speed inference and high-quality reconstruction,highlighting the possibility of deploying video CS in practical applications.Toward this end,this paper reviews the progress that has been achieved in video CS during the past decade.We further analyze the efforts that need to be made—in terms of both hardware and algorithms—to enable real applications.Research gaps are put forward and future directions are summarized to help researchers and engineers working on this topic.展开更多
Using the“Civil Aviation Oral English”course as a case study,we operationalize the ideological and political education(IPE)integrated evaluation system for oral English courses in higher vocational education,which i...Using the“Civil Aviation Oral English”course as a case study,we operationalize the ideological and political education(IPE)integrated evaluation system for oral English courses in higher vocational education,which is based on Kirkpatrick’s Model,into a tripartite teaching evaluation system.The system encompasses three components such as learning objective attainment,individual developmental progress,and value-added competency assessment.The proposed system facilitates three-dimensional,multi-level,and scientifically validated teaching evaluation.This approach aligns with the holistic development of students’knowledge structures,professional competencies,moral qualities,and emotional intelligence.The study provides novel methodological perspectives for IPE evaluation in vocational oral English instruction,particularly in:curriculum-based ideological mapping,competency growth metrics,and value internalization assessment.展开更多
This paper systematically studies the current practical application status,existing problems and optimization suggestions of 3D printing technology in spacecraft manufacturing.Research shows that this technology has b...This paper systematically studies the current practical application status,existing problems and optimization suggestions of 3D printing technology in spacecraft manufacturing.Research shows that this technology has been successfully applied to the manufacturing of key components such as rocket engines and satellite structures,demonstrating advantages like lightweight and rapid prototyping.However,it still faces core challenges such as material performance,process stability,adaptability to space environments,and industrialization costs.In response to these issues,this paper proposes three optimization suggestions:enhancing manufacturing reliability by developing aerospace-specific materials,optimizing process parameters,and establishing a quality traceability system.Surface modification technology and topological optimization design are adopted to enhance the adaptability to the spatial environment,and a space-ground integrated verification method is constructed.Reduce industrialization costs through the localization of materials,modular production,and the construction of a standardized system.Research has confirmed that implementing these measures can reduce the performance dispersion of 3D-printed aerospace components by more than 50%,increase their in-orbit lifespan by three times,and lower production costs by 30-40%.The research results of this paper provide a systematic technical route and industrialization solution for the large-scale application of 3D printing technology in the aerospace field,which has significant reference value for promoting the innovation of aerospace manufacturing models.展开更多
Polymer solid-state lithium batteries(SSLB)are regarded as a promising energy storage technology to meet growing demand due to their high energy density and safety.Ion conductivity,interface stability and battery asse...Polymer solid-state lithium batteries(SSLB)are regarded as a promising energy storage technology to meet growing demand due to their high energy density and safety.Ion conductivity,interface stability and battery assembly process are still the main challenges to hurdle the commercialization of SSLB.As the main component of SSLB,poly(1,3-dioxolane)(PDOL)-based solid polymer electrolytes polymerized in-situ are becoming a promising candidate solid elec-trolyte,for their high ion conductivity at room temperature,good battery elec-trochemical performances,and simple assembly process.This review analyzes opportunities and challenges of PDOL electrolytes toward practical application for polymer SSLB.The focuses include exploring the polymerization mechanism of DOL,the performance of PDOL composite electrolytes,and the application of PDOL.Furthermore,we provide a perspective on future research directions that need to be emphasized for commercialization of PDOL-based electrolytes in SSLB.The exploration of these schemes facilitates a comprehensive and profound understanding of PDOL-based polymer electrolyte and provides new research ideas to boost them toward practical application in solid-state batteries.展开更多
Rechargeable lithium-sulfur(Li-S)batteries,featuring high energy density,low cost,and environmental friendliness,have been dubbed as one of the most promising candidates to replace current commercial rechargeable Li-i...Rechargeable lithium-sulfur(Li-S)batteries,featuring high energy density,low cost,and environmental friendliness,have been dubbed as one of the most promising candidates to replace current commercial rechargeable Li-ion batteries.However,their practical deployment has long been plagued by the infamous“shuttle effect”of soluble Li polysulfides(LiPSs)and the rampant growth of Li dendrites.Therefore,it is important to specifically elucidate the solvation structure in the Li-S system and systematically summarize the feasibility strategies that can simultaneously suppress the shuttle effect and the growth of Li dendrites for practical applications.This review attempts to achieve this goal.In this review,we first introduce the importance of developing Li-S batteries and highlight the key challenges.Then,we revisit the working principles of Li-S batteries and underscore the fundamental understanding of LiPSs.Next,we summarize some representative characterization techniques and theoretical calculations applied to characterize the solvation structure of LiPSs.Afterward,we overview feasible designing strategies that can simultaneously suppress the shuttle effect of soluble LiPSs and the growth of Li dendrites.Finally,we conclude and propose personal insights and perspectives on the future development of Li-S batteries.We envisage that this timely review can provide some inspiration to build better Li-S batteries for promoting practical applications.展开更多
This paper addresses the problems faced in programmable logic controller(PLC)teaching in vocational colleges and proposes countermeasures to overcome these challenges.The study emphasizes the need for a deeper underst...This paper addresses the problems faced in programmable logic controller(PLC)teaching in vocational colleges and proposes countermeasures to overcome these challenges.The study emphasizes the need for a deeper understanding of fundamental concepts and the integration of practical application in PLC education.It suggests involving students in teacher-led projects to enhance their programming skills and problem-solving skills.Additionally,the paper highlights the importance of interactive learning and collaborative discussions to foster student engagement.Furthermore,it emphasizes the cultivation of innovation consciousness through participation in innovation competitions and projects.The implementation of these strategies has shown positive results in improving learning outcomes and preparing students for careers in automation and control.This research contributes to the development of effective teaching approaches in PLC education in vocational colleges.展开更多
[Objectives]To understand the function and ritual uses of juniper wood in Tibetan communities.[Methods]Detailed surveys were carried out amongst students of the School of Nationalities at Qinghai Normal University,in ...[Objectives]To understand the function and ritual uses of juniper wood in Tibetan communities.[Methods]Detailed surveys were carried out amongst students of the School of Nationalities at Qinghai Normal University,in order to analyze the practical application and examine the variety of viewpoints concerning functions and importance of juniper wood in Tibetan culture.[Results]193 out of 200 survey respondents completed and returned valid survey questionnaires.Among the responses,slightly more than 95%(185/193=95.8%)of the total number of informants stated that the primary function of juniper wood was its use as an incense,burned as part of religious ritual or home purification.73%(142/193=73.58%)of informants said that juniper wood also represents a kind of sacred wood or prayer-wood(tib.lab-tse).An equal number of respondents also shared about the use of juniper in the making of prayer-beads.About 62%(121/193=62.6%)responded that juniper is used to make prayer-flag poles.About 45%said that juniper wood is understood as a sacred plant and thus"marked"with sheep wool or silk,and therefore protected from other human interaction by such markings.Additionally,49%(96/193=49.7%)of the informants indicated that juniper wood is also used for medicinal incense.Finally,about 34%(67/193=34.7%)noted juniper is also used for medicinal bath.[Conclusions]The survey responses demonstrate that the function and importance of juniper wood permeate several aspects of Tibetan belief and culture.展开更多
In order to effectively improve the problems existing in higher vocational education, it is of great significance to strengthen the psychological construction of students. Positive psychology as a revolution in the fi...In order to effectively improve the problems existing in higher vocational education, it is of great significance to strengthen the psychological construction of students. Positive psychology as a revolution in the field of psychology, also has a positive guiding role in vocational education, its function is to strengthen the construction of students' psychological, pay attention to students' advantages, advocate the study of the students' good moral character, let the students to be more positive and optimistic attitude to life and learning, to a certain extent, give play to the role of positive psychology, bring more advantages for higher vocational college education management.展开更多
Objective: to explore the specific application effect of clinical pathway teaching method in clinical teaching of endocrinology department, improve the clinical teaching mode of endocrinology department, improve the c...Objective: to explore the specific application effect of clinical pathway teaching method in clinical teaching of endocrinology department, improve the clinical teaching mode of endocrinology department, improve the clinical teaching effect, cultivate a large number of high-quality clinical medical talents of endocrinology department, and make contributions to the development of endocrinology nursing industry in China. Methods: from June 2018 to June 2021, a total of 86 interns who practiced in the department of endocrinology in our hospital were taken as observation objects, and 86 interns were divided into two groups with the same number. The interns who received routine clinical teaching methods were divided into the control group, and the interns who received clinical pathway teaching methods were divided into the observation group. During clinical teaching in the department of endocrinology, the theoretical knowledge and professional skills of interns were regularly examined. The clinical level of the two groups of interns was compared, and the satisfaction of the two groups of interns to the teaching teachers was investigated by questionnaire. Then, the clinical teaching mode and method of endocrinology department were innovated and optimized to improve the professional level of clinical interns and the clinical teaching level of medical teachers. Results: by comparing the theoretical knowledge, case handling ability and basic operation of the two groups of interns at different stages, it can be seen that the clinical interns in endocrinology department who received clinical pathway teaching method have more solid theoretical knowledge, and their case handling ability and basic operation skills have been obviously improved, which is higher than that of the control group interns who received routine teaching. From the results of the questionnaire survey, it can be seen that the scores of the interns in the observation group to the teachers in the control group are much higher, and the satisfaction of the teachers in the observation group to the interns in the observation group is higher than that in the control group. The satisfaction score of interns in the observation group was higher than that in the control group. Conclusion: there is a huge talent gap in endocrinology department. In order to improve the medical and nursing quality of endocrinology department, it is necessary to speed up the training of interns. The clinical teaching method can effectively improve the professional level of medical interns in endocrinology department, and the clinical pathway teaching method can promote the balanced improvement of theoretical knowledge and professional skills of interns, strengthen the interns' case handling ability and basic operation skills, and effectively meet the demand of medical talents in endocrinology department of hospitals. It is suggested that clinical pathway teaching method should be used reasonably in future clinical teaching.展开更多
In the new era,China’s education industry was ushered in a high-quality development stage.On the one hand,it is necessary to set a goal of education management on the all-round development of students.On the other ha...In the new era,China’s education industry was ushered in a high-quality development stage.On the one hand,it is necessary to set a goal of education management on the all-round development of students.On the other hand,we should innovate some practical application schemes of diversified incentive mechanism consistent with the needs of educational management.Taking this as the starting point,this paper summarizes the connotation of incentive mechanism and diversified incentive mechanism,and analyzes the practical problems of single incentive standard,issues on incentive timeliness,and reduced participation of incentive objects at the current stage.On this basis,this paper puts forward some corresponding measures from three angles:opening up thinking,updating in time and emphasizing the target.展开更多
Transition metals have garnered significant attention for their roles in addressing energy shortages and environmental water pollution.Their multivalent states and unique electron transfer properties facilitate charge...Transition metals have garnered significant attention for their roles in addressing energy shortages and environmental water pollution.Their multivalent states and unique electron transfer properties facilitate charge transfer in the conversion reaction,expedite energy conversion,and achieve low-energy water treatment.This review comprehensively explores the fundamental mechanisms and practical applications of transition metals in water treatment,including adsorption,photocatalysis,electrocatalysis,photoelectrocatalysis,and other technologies.The feasibility of water treatment using transition metal-based materials is demonstrated through theoretical studies on typical transition metals employed in these water treatment technologies while emphasizing the potential for optimizing material performance through strategies like structural design,defect engineering,crystal engineering,composite materials,surface modification,and atomic catalysts.In addition,the utilization of transition metal-based materials in practical wastewater treatment is comprehensively reviewed.Finally,the challenges and perspectives of transition metal-based materials in practical wastewater treatment are outlined,providing a theoretical foundation and guidance for future research and engineering advancements.展开更多
Lithium-sulfur(Li-S)batteries have been regarded as a promising next-generation energy storage system owing to the high theoretical energy density and natural abundance of sulfur.Abundant fundamental researches have p...Lithium-sulfur(Li-S)batteries have been regarded as a promising next-generation energy storage system owing to the high theoretical energy density and natural abundance of sulfur.Abundant fundamental researches have pushed the flourishing development on electrochemical behaviors in recent 20 years.It is time to evolve into post-Li-S battery era with the pursuit towards practical application.During the landmark leap,numerous new challenges appear under harsh conditions,such as high sulfur loading,low cathode density,lean electrolyte and limited lithium reservoir.Herein,we summarize the considerable parameters of pouch Li-S cells and review the pioneering studies focused on the cathode structure,conversion kinetics,electrode interphase and battery safety.The interwoven relationship of these key points is concluded and discussed,which provides guidance to future researches aiming to safe and long-lifespan Li-S batteries with high energy density.展开更多
As globalization accelerates,microbial contamination in the built environment poses a major public health challenge.Especially since Corona Virus Disease 2019(COVID-19),microbial sterilization technology has become a ...As globalization accelerates,microbial contamination in the built environment poses a major public health challenge.Especially since Corona Virus Disease 2019(COVID-19),microbial sterilization technology has become a crucial research area for indoor air pollution control in order to create a hygienic and safe built environment.Based on this,the study reviews sterilization technologies in the built environment,focusing on the principles,efficiency and applicability,revealing advantages and limitations,and summarizing current research advances.Despite the efficacy of single sterilization technologies in specific environments,the corresponding side effects still exist.Thus,this review highlights the efficiency of hybrid sterilization technologies,providing an in-depth understanding of the practical application in the built environment.Also,it presents an outlook on the future direction of sterilization technology,including the development of new methods that are more efficient,energy-saving,and targeted to better address microbial contamination in the complex and changing built environment.Overall,this study provides a clear guide for selecting technologies to handle microbial contamination in different building environments in the future,as well as a scientific basis for developing more effective air quality control strategies.展开更多
This paper comprehensively explores the technical principles and application practice of Sainaoning absorbable dural sealant medical adhesive in dural closure.It elaborates on the research and development background o...This paper comprehensively explores the technical principles and application practice of Sainaoning absorbable dural sealant medical adhesive in dural closure.It elaborates on the research and development background of Sainaoning,analyzes its composition,action mechanism,and product characteristics in detail,and presents the results of pre-clinical and clinical studies.The application of Sainaoning in different craniotomy surgeries is discussed,and its effectiveness and safety are evaluated.The paper also analyzes the challenges in its application and proposes corresponding countermeasures,aiming to provide a comprehensive understanding and reference for the clinical use and further development of Sainaoning.展开更多
In the context of energy structure transformation,digital and intelligent technologies have been introduced into the field of hydropower,which has accelerated the technological and equipment innovation of hydropower p...In the context of energy structure transformation,digital and intelligent technologies have been introduced into the field of hydropower,which has accelerated the technological and equipment innovation of hydropower plants.However,it has also brought severe challenges to the operation and maintenance of hydropower plants.Traditional hydropower plant operation and maintenance suffer from problems such as low efficiency,equipment aging,and high labor costs,which seriously hinder the innovation and upgrading of hydropower plant operation and maintenance.Therefore,this article focuses on the operation and maintenance of hydropower plants,summarizes a series of innovative strategies,and applies them in practice to effectively improve the operation and maintenance level of hydropower plants.展开更多
This paper conducts practical research on the application of steel fiber reinforced concrete construction technology in road and bridge engineering.The study emphasized in its core advantages of tensile strength,impac...This paper conducts practical research on the application of steel fiber reinforced concrete construction technology in road and bridge engineering.The study emphasized in its core advantages of tensile strength,impact resistance,fatigue resistance and high toughness,and introduces its applications in scenarios such as bridge deck pavement,expansion joints and tunnel opening sections.The key points of construction techniques such as material ratio and fiber selection,mixing,pouring and vibration,as well as quality control difficulties and solutions such as steel fiber dispersion,shrinkage cracks and temperature control was analyzed.The development trends of intelligent material research and development and automated construction technology,and propose application suggestions for engineering design and construction management was discussed in this study,which can serve as a references to improve the quality of road and bridge engineering.展开更多
Catalogue for the Guidance of Foreign Investment Encouraged IndustriesⅧReal estate Policy background This industry remains somewhat constrained. The development of land remains "restricted" (and for equity ...Catalogue for the Guidance of Foreign Investment Encouraged IndustriesⅧReal estate Policy background This industry remains somewhat constrained. The development of land remains "restricted" (and for equity industry or contractual JVs only), as do the construction and operation of high-ranking hotels, villas, high-class office buildings and international exhibition centers, and large-scale theme parks. FDI in 2005 $5.4 billion used Economic trends In 2005, investment in real estate development was 1, 575....展开更多
Catalogue of Priority Industries for Foreign Investment in the Central-Western Region took effect on September 1, 2004. This covers Shanxi, Jilin, Heilongjiang, Anhui, Jiangxi, Henan, Hubei, Hunan, Chongqing, Sichuan,...Catalogue of Priority Industries for Foreign Investment in the Central-Western Region took effect on September 1, 2004. This covers Shanxi, Jilin, Heilongjiang, Anhui, Jiangxi, Henan, Hubei, Hunan, Chongqing, Sichuan, Guizhou, Yunnan, Tibet, Shaanxi, Gansu, Qinghai, Ningxia, Xinjiang, Inner Mongolia and Guangxi. Catalogue for the Guidance of Foreign Investment Industries Let's look first at the general situation in most of China, before discussing the central and western regions. The lion's share of fore...展开更多
基金Wuhan University of Arts and Science 2023 University-Level Scientific Research(Project No.:2023xk33)。
文摘The application of digital technology in prosthodontics not only improves the accuracy of restoration and the efficiency of diagnosis and treatment,but also brings more comfortable and convenient diagnosis and treatment experience to patients.It effectively promotes the rapid development of the prosthodontic aesthetics industry and leads prosthodontic technology to gradually enter a new digital era.Combining the advantages of digital technology in prosthodontics,this paper focuses on the specific applications of digital impression technology,CAD/CAM technology,network-based integrated cloud service technology,and CBCT technology in prosthodontics.On this basis,it prospects the development trend of digital technology in the field of prosthodontics,aiming to provide solid theoretical and practical support for clinical practice of prosthodontics and promote the gradual integration of the prosthodontic industry with the digital era.
基金supported by the National Natural Science Foundation of China(61931012,62171258,62088102,and 62271414)the Zhejiang Provincial Outstanding Youth Science Foundation(LR23F010001)the Key Project of Westlake Institute for Optoelectronics(2023GD007).
文摘It has been over a decade since the first coded aperture video compressive sensing(CS)system was reported.The underlying principle of this technology is to employ a high-frequency modulator in the optical path to modulate a recorded high-speed scene within one integration time.The superimposed image captured in this manner is modulated and compressed,since multiple modulation patterns are imposed.Following this,reconstruction algorithms are utilized to recover the desired high-speed scene.One leading advantage of video CS is that a single captured measurement can be used to reconstruct a multi-frame video,thereby enabling a low-speed camera to capture high-speed scenes.Inspired by this,a number of variants of video CS systems have been built,mainly using different modulation devices.Meanwhile,in order to obtain high-quality reconstruction videos,many algorithms have been developed,from optimization-based iterative algorithms to deep-learning-based ones.Recently,emerging deep learning methods have been dominant due to their high-speed inference and high-quality reconstruction,highlighting the possibility of deploying video CS in practical applications.Toward this end,this paper reviews the progress that has been achieved in video CS during the past decade.We further analyze the efforts that need to be made—in terms of both hardware and algorithms—to enable real applications.Research gaps are put forward and future directions are summarized to help researchers and engineers working on this topic.
基金supported by grants from“2023 Research on Vocational English Curriculum Reform:‘Implementation Path of Ideological and Political Education in Vocational English Courses for Higher Vocational Education Under the New Curriculum Standards’(Grant No.WYJZW-2023GD0029)”“The Special Project of 2024 on‘Reading and Teacher Development’Under the 14th Five-Year Plan of the China Tao Xingzhi Research Association(Grant No.CTXZRA202411937GD)”.
文摘Using the“Civil Aviation Oral English”course as a case study,we operationalize the ideological and political education(IPE)integrated evaluation system for oral English courses in higher vocational education,which is based on Kirkpatrick’s Model,into a tripartite teaching evaluation system.The system encompasses three components such as learning objective attainment,individual developmental progress,and value-added competency assessment.The proposed system facilitates three-dimensional,multi-level,and scientifically validated teaching evaluation.This approach aligns with the holistic development of students’knowledge structures,professional competencies,moral qualities,and emotional intelligence.The study provides novel methodological perspectives for IPE evaluation in vocational oral English instruction,particularly in:curriculum-based ideological mapping,competency growth metrics,and value internalization assessment.
文摘This paper systematically studies the current practical application status,existing problems and optimization suggestions of 3D printing technology in spacecraft manufacturing.Research shows that this technology has been successfully applied to the manufacturing of key components such as rocket engines and satellite structures,demonstrating advantages like lightweight and rapid prototyping.However,it still faces core challenges such as material performance,process stability,adaptability to space environments,and industrialization costs.In response to these issues,this paper proposes three optimization suggestions:enhancing manufacturing reliability by developing aerospace-specific materials,optimizing process parameters,and establishing a quality traceability system.Surface modification technology and topological optimization design are adopted to enhance the adaptability to the spatial environment,and a space-ground integrated verification method is constructed.Reduce industrialization costs through the localization of materials,modular production,and the construction of a standardized system.Research has confirmed that implementing these measures can reduce the performance dispersion of 3D-printed aerospace components by more than 50%,increase their in-orbit lifespan by three times,and lower production costs by 30-40%.The research results of this paper provide a systematic technical route and industrialization solution for the large-scale application of 3D printing technology in the aerospace field,which has significant reference value for promoting the innovation of aerospace manufacturing models.
基金We express our sincere appreciation to the National Natural Science Foundation of China(No.51474113(M.Jing),22279070[L.Wang]and U21A20170[X.He])the Ministry of Science and Technology of China(No.2019YFA0705703[L.Wang]).And we would like to thank the“Explorer 100”cluster system of Tsinghua National Laboratory for Information Science and Technology for facility support.
文摘Polymer solid-state lithium batteries(SSLB)are regarded as a promising energy storage technology to meet growing demand due to their high energy density and safety.Ion conductivity,interface stability and battery assembly process are still the main challenges to hurdle the commercialization of SSLB.As the main component of SSLB,poly(1,3-dioxolane)(PDOL)-based solid polymer electrolytes polymerized in-situ are becoming a promising candidate solid elec-trolyte,for their high ion conductivity at room temperature,good battery elec-trochemical performances,and simple assembly process.This review analyzes opportunities and challenges of PDOL electrolytes toward practical application for polymer SSLB.The focuses include exploring the polymerization mechanism of DOL,the performance of PDOL composite electrolytes,and the application of PDOL.Furthermore,we provide a perspective on future research directions that need to be emphasized for commercialization of PDOL-based electrolytes in SSLB.The exploration of these schemes facilitates a comprehensive and profound understanding of PDOL-based polymer electrolyte and provides new research ideas to boost them toward practical application in solid-state batteries.
基金financially supported by the National Natural Science Foundation of China(51972064 and 52222315)
文摘Rechargeable lithium-sulfur(Li-S)batteries,featuring high energy density,low cost,and environmental friendliness,have been dubbed as one of the most promising candidates to replace current commercial rechargeable Li-ion batteries.However,their practical deployment has long been plagued by the infamous“shuttle effect”of soluble Li polysulfides(LiPSs)and the rampant growth of Li dendrites.Therefore,it is important to specifically elucidate the solvation structure in the Li-S system and systematically summarize the feasibility strategies that can simultaneously suppress the shuttle effect and the growth of Li dendrites for practical applications.This review attempts to achieve this goal.In this review,we first introduce the importance of developing Li-S batteries and highlight the key challenges.Then,we revisit the working principles of Li-S batteries and underscore the fundamental understanding of LiPSs.Next,we summarize some representative characterization techniques and theoretical calculations applied to characterize the solvation structure of LiPSs.Afterward,we overview feasible designing strategies that can simultaneously suppress the shuttle effect of soluble LiPSs and the growth of Li dendrites.Finally,we conclude and propose personal insights and perspectives on the future development of Li-S batteries.We envisage that this timely review can provide some inspiration to build better Li-S batteries for promoting practical applications.
基金The Project of China Vocational Education Association(ZJS2022YB024)。
文摘This paper addresses the problems faced in programmable logic controller(PLC)teaching in vocational colleges and proposes countermeasures to overcome these challenges.The study emphasizes the need for a deeper understanding of fundamental concepts and the integration of practical application in PLC education.It suggests involving students in teacher-led projects to enhance their programming skills and problem-solving skills.Additionally,the paper highlights the importance of interactive learning and collaborative discussions to foster student engagement.Furthermore,it emphasizes the cultivation of innovation consciousness through participation in innovation competitions and projects.The implementation of these strategies has shown positive results in improving learning outcomes and preparing students for careers in automation and control.This research contributes to the development of effective teaching approaches in PLC education in vocational colleges.
基金Supported by Higher Innovation&Entrepreneurship Talents Project at Qinghai Normal University.
文摘[Objectives]To understand the function and ritual uses of juniper wood in Tibetan communities.[Methods]Detailed surveys were carried out amongst students of the School of Nationalities at Qinghai Normal University,in order to analyze the practical application and examine the variety of viewpoints concerning functions and importance of juniper wood in Tibetan culture.[Results]193 out of 200 survey respondents completed and returned valid survey questionnaires.Among the responses,slightly more than 95%(185/193=95.8%)of the total number of informants stated that the primary function of juniper wood was its use as an incense,burned as part of religious ritual or home purification.73%(142/193=73.58%)of informants said that juniper wood also represents a kind of sacred wood or prayer-wood(tib.lab-tse).An equal number of respondents also shared about the use of juniper in the making of prayer-beads.About 62%(121/193=62.6%)responded that juniper is used to make prayer-flag poles.About 45%said that juniper wood is understood as a sacred plant and thus"marked"with sheep wool or silk,and therefore protected from other human interaction by such markings.Additionally,49%(96/193=49.7%)of the informants indicated that juniper wood is also used for medicinal incense.Finally,about 34%(67/193=34.7%)noted juniper is also used for medicinal bath.[Conclusions]The survey responses demonstrate that the function and importance of juniper wood permeate several aspects of Tibetan belief and culture.
文摘In order to effectively improve the problems existing in higher vocational education, it is of great significance to strengthen the psychological construction of students. Positive psychology as a revolution in the field of psychology, also has a positive guiding role in vocational education, its function is to strengthen the construction of students' psychological, pay attention to students' advantages, advocate the study of the students' good moral character, let the students to be more positive and optimistic attitude to life and learning, to a certain extent, give play to the role of positive psychology, bring more advantages for higher vocational college education management.
文摘Objective: to explore the specific application effect of clinical pathway teaching method in clinical teaching of endocrinology department, improve the clinical teaching mode of endocrinology department, improve the clinical teaching effect, cultivate a large number of high-quality clinical medical talents of endocrinology department, and make contributions to the development of endocrinology nursing industry in China. Methods: from June 2018 to June 2021, a total of 86 interns who practiced in the department of endocrinology in our hospital were taken as observation objects, and 86 interns were divided into two groups with the same number. The interns who received routine clinical teaching methods were divided into the control group, and the interns who received clinical pathway teaching methods were divided into the observation group. During clinical teaching in the department of endocrinology, the theoretical knowledge and professional skills of interns were regularly examined. The clinical level of the two groups of interns was compared, and the satisfaction of the two groups of interns to the teaching teachers was investigated by questionnaire. Then, the clinical teaching mode and method of endocrinology department were innovated and optimized to improve the professional level of clinical interns and the clinical teaching level of medical teachers. Results: by comparing the theoretical knowledge, case handling ability and basic operation of the two groups of interns at different stages, it can be seen that the clinical interns in endocrinology department who received clinical pathway teaching method have more solid theoretical knowledge, and their case handling ability and basic operation skills have been obviously improved, which is higher than that of the control group interns who received routine teaching. From the results of the questionnaire survey, it can be seen that the scores of the interns in the observation group to the teachers in the control group are much higher, and the satisfaction of the teachers in the observation group to the interns in the observation group is higher than that in the control group. The satisfaction score of interns in the observation group was higher than that in the control group. Conclusion: there is a huge talent gap in endocrinology department. In order to improve the medical and nursing quality of endocrinology department, it is necessary to speed up the training of interns. The clinical teaching method can effectively improve the professional level of medical interns in endocrinology department, and the clinical pathway teaching method can promote the balanced improvement of theoretical knowledge and professional skills of interns, strengthen the interns' case handling ability and basic operation skills, and effectively meet the demand of medical talents in endocrinology department of hospitals. It is suggested that clinical pathway teaching method should be used reasonably in future clinical teaching.
文摘In the new era,China’s education industry was ushered in a high-quality development stage.On the one hand,it is necessary to set a goal of education management on the all-round development of students.On the other hand,we should innovate some practical application schemes of diversified incentive mechanism consistent with the needs of educational management.Taking this as the starting point,this paper summarizes the connotation of incentive mechanism and diversified incentive mechanism,and analyzes the practical problems of single incentive standard,issues on incentive timeliness,and reduced participation of incentive objects at the current stage.On this basis,this paper puts forward some corresponding measures from three angles:opening up thinking,updating in time and emphasizing the target.
基金financially supported by the National Natural Science Foundation of China(Nos.22306026 and 52371346)the Young Elite Scientists Sponsorship Program by China Association for Science and Technology(No.2023QNRC001)+3 种基金the Ecological Society of China(No.STQT2023C07)the Fundamental Research Funds for the Central Universities(Nos.2242024K40007 and 2242024RCB0058)the Start-up Research Fund of Southeast University(No.RF1028623141)Tang Scholar Program of Southeast University
文摘Transition metals have garnered significant attention for their roles in addressing energy shortages and environmental water pollution.Their multivalent states and unique electron transfer properties facilitate charge transfer in the conversion reaction,expedite energy conversion,and achieve low-energy water treatment.This review comprehensively explores the fundamental mechanisms and practical applications of transition metals in water treatment,including adsorption,photocatalysis,electrocatalysis,photoelectrocatalysis,and other technologies.The feasibility of water treatment using transition metal-based materials is demonstrated through theoretical studies on typical transition metals employed in these water treatment technologies while emphasizing the potential for optimizing material performance through strategies like structural design,defect engineering,crystal engineering,composite materials,surface modification,and atomic catalysts.In addition,the utilization of transition metal-based materials in practical wastewater treatment is comprehensively reviewed.Finally,the challenges and perspectives of transition metal-based materials in practical wastewater treatment are outlined,providing a theoretical foundation and guidance for future research and engineering advancements.
基金financially supported by the National Key R&D Program of China(2021YFB2400300)National Natural Science Foundation of China(22179083)+1 种基金Program of Shanghai Academic Research Leader(20XD1401900)Key-Area Research and Development Program of Guangdong Province(2019B090908001)。
文摘Lithium-sulfur(Li-S)batteries have been regarded as a promising next-generation energy storage system owing to the high theoretical energy density and natural abundance of sulfur.Abundant fundamental researches have pushed the flourishing development on electrochemical behaviors in recent 20 years.It is time to evolve into post-Li-S battery era with the pursuit towards practical application.During the landmark leap,numerous new challenges appear under harsh conditions,such as high sulfur loading,low cathode density,lean electrolyte and limited lithium reservoir.Herein,we summarize the considerable parameters of pouch Li-S cells and review the pioneering studies focused on the cathode structure,conversion kinetics,electrode interphase and battery safety.The interwoven relationship of these key points is concluded and discussed,which provides guidance to future researches aiming to safe and long-lifespan Li-S batteries with high energy density.
文摘As globalization accelerates,microbial contamination in the built environment poses a major public health challenge.Especially since Corona Virus Disease 2019(COVID-19),microbial sterilization technology has become a crucial research area for indoor air pollution control in order to create a hygienic and safe built environment.Based on this,the study reviews sterilization technologies in the built environment,focusing on the principles,efficiency and applicability,revealing advantages and limitations,and summarizing current research advances.Despite the efficacy of single sterilization technologies in specific environments,the corresponding side effects still exist.Thus,this review highlights the efficiency of hybrid sterilization technologies,providing an in-depth understanding of the practical application in the built environment.Also,it presents an outlook on the future direction of sterilization technology,including the development of new methods that are more efficient,energy-saving,and targeted to better address microbial contamination in the complex and changing built environment.Overall,this study provides a clear guide for selecting technologies to handle microbial contamination in different building environments in the future,as well as a scientific basis for developing more effective air quality control strategies.
文摘This paper comprehensively explores the technical principles and application practice of Sainaoning absorbable dural sealant medical adhesive in dural closure.It elaborates on the research and development background of Sainaoning,analyzes its composition,action mechanism,and product characteristics in detail,and presents the results of pre-clinical and clinical studies.The application of Sainaoning in different craniotomy surgeries is discussed,and its effectiveness and safety are evaluated.The paper also analyzes the challenges in its application and proposes corresponding countermeasures,aiming to provide a comprehensive understanding and reference for the clinical use and further development of Sainaoning.
文摘In the context of energy structure transformation,digital and intelligent technologies have been introduced into the field of hydropower,which has accelerated the technological and equipment innovation of hydropower plants.However,it has also brought severe challenges to the operation and maintenance of hydropower plants.Traditional hydropower plant operation and maintenance suffer from problems such as low efficiency,equipment aging,and high labor costs,which seriously hinder the innovation and upgrading of hydropower plant operation and maintenance.Therefore,this article focuses on the operation and maintenance of hydropower plants,summarizes a series of innovative strategies,and applies them in practice to effectively improve the operation and maintenance level of hydropower plants.
文摘This paper conducts practical research on the application of steel fiber reinforced concrete construction technology in road and bridge engineering.The study emphasized in its core advantages of tensile strength,impact resistance,fatigue resistance and high toughness,and introduces its applications in scenarios such as bridge deck pavement,expansion joints and tunnel opening sections.The key points of construction techniques such as material ratio and fiber selection,mixing,pouring and vibration,as well as quality control difficulties and solutions such as steel fiber dispersion,shrinkage cracks and temperature control was analyzed.The development trends of intelligent material research and development and automated construction technology,and propose application suggestions for engineering design and construction management was discussed in this study,which can serve as a references to improve the quality of road and bridge engineering.
文摘Catalogue for the Guidance of Foreign Investment Encouraged IndustriesⅧReal estate Policy background This industry remains somewhat constrained. The development of land remains "restricted" (and for equity industry or contractual JVs only), as do the construction and operation of high-ranking hotels, villas, high-class office buildings and international exhibition centers, and large-scale theme parks. FDI in 2005 $5.4 billion used Economic trends In 2005, investment in real estate development was 1, 575....
文摘Catalogue of Priority Industries for Foreign Investment in the Central-Western Region took effect on September 1, 2004. This covers Shanxi, Jilin, Heilongjiang, Anhui, Jiangxi, Henan, Hubei, Hunan, Chongqing, Sichuan, Guizhou, Yunnan, Tibet, Shaanxi, Gansu, Qinghai, Ningxia, Xinjiang, Inner Mongolia and Guangxi. Catalogue for the Guidance of Foreign Investment Industries Let's look first at the general situation in most of China, before discussing the central and western regions. The lion's share of fore...
