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College English Curriculum Reform in the Context of New Engineering Education:Taking Wuhan University of Technology as an Example
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作者 WANG Hai-yan SHE Ran-ran 《Journal of Literature and Art Studies》 2024年第4期302-305,共4页
With the introduction of“new engineering,new medical science,new agricultural science,and new liberal arts”construction,the reform of college English teaching is also imperative.Scholars nationwide have conducted at... With the introduction of“new engineering,new medical science,new agricultural science,and new liberal arts”construction,the reform of college English teaching is also imperative.Scholars nationwide have conducted attempts in different aspects of college English teaching and produced fruitful results.Yet,more efforts should be made.This paper discusses the reforms made by Wuhan University of Technology,focusing on the reformation of curriculum. 展开更多
关键词 new engineering construction CURRICULUM specialized purpose courses
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The Progress of IGS Analysis Center at Wuhan University 被引量:1
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作者 Weiping JIANG Qile ZHAO +7 位作者 Min LI Jing GUO Jianghui GENG Zhao LI Shengfeng GU Qiang ZHANG Zhigang HU Na WEI 《Journal of Geodesy and Geoinformation Science》 CSCD 2023年第3期46-57,共12页
As one of the Analysis Centers(AC)of the International GNSS Service(IGS),Wuhan University(WHU)has been contributing to the IGS by providing ultra-rapid as well as rapid orbit and clock solutions for the established GP... As one of the Analysis Centers(AC)of the International GNSS Service(IGS),Wuhan University(WHU)has been contributing to the IGS by providing ultra-rapid as well as rapid orbit and clock solutions for the established GPS and GLONASS since 2012.In the same year,the IGS initiated the Multi-GNSS Experiment(MGEX)to support the analysis of the emerging GNSS systems and prepare the IGS for Multi-GNSS,which includes GPS,GLONASS,the European Galileo system,the Chinese Beidou Navigation Satellite System(BDS),the Japanese Quasi-Zenith Satellite System(QZSS)and the Indian Regional Navigation Satellite System(IRNSS/NaVIC).The major products,i.e.,orbits,Earth Orientation Parameters(EOPs),satellite clock as well as attitude have also been provided by WHU since 2012.More recently,WHU has engaged the third reprocessing of IGS for generating the highly accurate station coordinates as inputs for establishment of the International Terrestrial Reference Frame(ITRF)2020 during 2019—2020.This article presents the recent major advancements of the IGS AC at Wuhan University,including precise products,real-time products,bias products,antenna phase center calibration,and the non-linear motion modeling for GNSS Reference Stations. 展开更多
关键词 GNSS BDS International GNSS Service orbit and clock products non-linear motion
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Social bookmarking behaviors of college students:A survey of Wuhan University Library users 被引量:1
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作者 Dan WU Xiaomei XU Wenting YU 《Chinese Journal of Library and Information Science》 2013年第3期15-30,共16页
Purpose:To have a better understanding of library users' social bookmarking behaviors,we conducted a survey of college students to examine how much attention they have paid to social bookmarking results,their soci... Purpose:To have a better understanding of library users' social bookmarking behaviors,we conducted a survey of college students to examine how much attention they have paid to social bookmarking results,their social bookmarking motivations and behaviors on book sharing sites and in their library's OPAC,and their expectations to their library's social bookmarking service.Design/methodology/approach:A questionnaire survey was conducted to investigate social bookmarking behaviors and motivations of users of Wuhan University Library(WUL) on book sharing sites and in WUL's OPAC.A total of 700 questionnaires were distributed and357 valid questionnaires were retrieved.SPSS was used for data analysis.Findings:The results revealed that there were differences between users' social bookmarking behaviors on book sharing sites and in the Library's OPAC.Users preferred to use tags than add tags on book sharing sites.The main tagging motivation on book sharing sites was for meeting users' specific needs such as collection management and book recommendations.As for the Library,the lack of publicity and promotion of the social bookmarking service led to insufficient use of the Library's service.Due to a lack of knowledge of the social bookmarking service,users did not care about the lectures or publicity campaigns about the Library's social bookmarking service.Research limitations:Because social bookmarking was not common among WUL users,and the questionnaires could be handed out to a limited number of people,it was hard to describe users' social bookmarking behaviors in the Library's OPAC by investigating a sample of 357Library users,and therefore we only investigated users' social bookmarking behaviors on the book sharing sites.Practical implications:The survey results provide insights into library users' social bookmarking behaviors and motivations.The study will help academic libraries improve their social bookmarking service.Originality/value:In spite of growing popularity of social bookmarking sites,little has been known about the social bookmarking behaviors of library users.This study investigated college students' social bookmarking behaviors and motivations,providing suggestions for academic libraries to improve their social bookmarking services. 展开更多
关键词 Social bookmarking behavior Social bookmark Tagging RATING Academic libraries
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Research on Translation of Campus Public Signs in Wuhan University of Technology
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作者 LI Hui XIANG Qing-ling 《海外英语》 2015年第4期171-173,共3页
Based on Eugene Nida's "dynamic equivalence" translation theory as well as current situations for the translation of campus public signs in Wuhan University of Technology, this paper aimed at investigati... Based on Eugene Nida's "dynamic equivalence" translation theory as well as current situations for the translation of campus public signs in Wuhan University of Technology, this paper aimed at investigating and researching the standard translation methods for campus public signs. Moreover, through the collection and analysis of the current situation about the public signs in the University, this paper also intended to provide an internationally recognized version of translation for campus public signs. Finally, the paper suggests practical ways for the promotion of the translated version in order to realize its application in other universities of China. 展开更多
关键词 CAMPUS PUBLIC SIGNS Dynamic EQUIVALENCE TRANSLATION methods Standardized version
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Exploration and Practice of the Reform of Postgraduate Award System-Taking Wuhan University of Science and Technology as an Example
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作者 Hongming Fang Shaowei Lu +4 位作者 Shuang Yan Shijie Wang Lei Zhao Xiaohua Zuo Hui Jin 《Journal of Contemporary Educational Research》 2021年第10期93-98,共6页
China began to implement the charging policy for postgraduate students in 2014.Various universities at all levels have formulated a scholarship and stipend system for postgraduate students,which is in line with the ne... China began to implement the charging policy for postgraduate students in 2014.Various universities at all levels have formulated a scholarship and stipend system for postgraduate students,which is in line with the needs of schools in talent training along with the spirit of relevant documents of the Ministry of Education and the actual situation of the schools.This study investigates and analyzes the advantages and disadvantages of the postgraduate funding by Wuhan University of Science and Technology.This article then provides advice for the reform of the scholarship and stipend system from improving the precision funding system,to increasing funding,to expanding the scope of postgraduate funding,and standardizing the treatment of deferred postgraduate students in hope that it would provide a basis for the funding system and provide guarantee for postgraduate students to complete their studies successfully. 展开更多
关键词 POSTGRADUATE Scholarship and stipend system Standard Reform
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The Roles of the Universities in Human Rights Protection and Promotion in China——In the Case of Wuhan University Law School
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作者 ZHANG WANHONG 《The Journal of Human Rights》 2010年第5期16-21,共6页
Human rights is a great term, as well as an arduous undertaking, which needs unremitted efforts from various departments and all walks of life. Because of the advantages in resources and human talents, universities bo... Human rights is a great term, as well as an arduous undertaking, which needs unremitted efforts from various departments and all walks of life. Because of the advantages in resources and human talents, universities boast irreplaceable functions in the innovation, spread and application of human rights knowledge and can make outstanding contribution to the spread and popularization of human rights researches, 展开更多
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Preface:special issue celebrating the 130th anniversary of Wuhan University
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作者 Xiang Zhou Zhen Li +1 位作者 Xiaocheng Weng Qianqian Li 《Science China Chemistry》 SCIE EI CAS CSCD 2023年第11期2929-2929,共1页
Wuhan University(WHU)stands as a pivotal national university under the direct administration of Ministry of Education in China.It proudly bears the distinction of being part of the prestigious“211 Project”and“985 P... Wuhan University(WHU)stands as a pivotal national university under the direct administration of Ministry of Education in China.It proudly bears the distinction of being part of the prestigious“211 Project”and“985 Project”universities,receiving full support for its construction and development from both the central and local governments of China. 展开更多
关键词 China WUHAN ANNIVERSARY
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Empirical study on journal literature guarantee of academic library: A case study of Wuhan University
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作者 Xincai WANG Haining WANG 《Journal of Library Science in China》 2015年第1期96-110,共15页
The rising acceptance of e-only policy and open access initiative transforms the collection composition in academic libraries. Accordingly, the roles of electronic, print and open access journals as part of a library... The rising acceptance of e-only policy and open access initiative transforms the collection composition in academic libraries. Accordingly, the roles of electronic, print and open access journals as part of a library’s journal holdings have become different from the past, which needs to be brought to the forefront. Samples of this research are drawn from the articles whose first author is from Wuhan University. They should be issued in 2013 and indexed by SCIE, SSCI or A&HCI. The authors introduced an improved citation checking method to the study by matching the journal cited references of the sample with the journals from print, electronic collections and the world’s major open access databases that are available at the Wuhan University Library in accordance with the publishing year instead of the volume number. Thus, the availability and unavailability of the source journals in open access, electronic, and print journal resources can be examined and compared in a comprehensive manner. By comparing the effectiveness of these three formats of resources as the reference source of published articles, this article attempts to analyze their features and tendencies under the current open access environment as well as discusses how the development of open access journals has impacted the collection building of university libraries in China, so as to provide enlightenment and reference for academic libraries to optimize their resource provision and meet the patrons’ current needs. 展开更多
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Blended Learning in English Learning--A Case Study of Wuhan Donghu University
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作者 Xiaojia Xu 《International Journal of Technology Management》 2016年第7期46-47,共2页
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Ferroptosis and endoplasmic reticulum stress in ischemic stroke 被引量:4
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作者 Yina Li Mingyang Li +4 位作者 Shi Feng Qingxue Xu Xu Zhang Xiaoxing Xiong Lijuan Gu 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第3期611-618,共8页
Ferroptosis is a form of non-apoptotic programmed cell death,and its mechanisms mainly involve the accumulation of lipid peroxides,imbalance in the amino acid antioxidant system,and disordered iron metabolism.The prim... Ferroptosis is a form of non-apoptotic programmed cell death,and its mechanisms mainly involve the accumulation of lipid peroxides,imbalance in the amino acid antioxidant system,and disordered iron metabolism.The primary organelle responsible for coordinating external challenges and internal cell demands is the endoplasmic reticulum,and the progression of inflammatory diseases can trigger endoplasmic reticulum stress.Evidence has suggested that ferroptosis may share pathways or interact with endoplasmic reticulum stress in many diseases and plays a role in cell survival.Ferroptosis and endoplasmic reticulum stress may occur after ischemic stroke.However,there are few reports on the interactions of ferroptosis and endoplasmic reticulum stress with ischemic stroke.This review summarized the recent research on the relationships between ferroptosis and endoplasmic reticulum stress and ischemic stroke,aiming to provide a reference for developing treatments for ischemic stroke. 展开更多
关键词 cell death endoplasmic reticulum stress ferroptosis ischemic stroke lipid peroxidation
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Metabolic and proteostatic differences in quiescent and active neural stem cells 被引量:1
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作者 Jiacheng Yu Gang Chen +4 位作者 Hua Zhu Yi Zhong Zhenxing Yang Zhihong Jian Xiaoxing Xiong 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第1期43-48,共6页
Adult neural stem cells are neurogenesis progenitor cells that play an important role in neurogenesis.Therefore,neural regeneration may be a promising target for treatment of many neurological illnesses.The regenerati... Adult neural stem cells are neurogenesis progenitor cells that play an important role in neurogenesis.Therefore,neural regeneration may be a promising target for treatment of many neurological illnesses.The regenerative capacity of adult neural stem cells can be chara cterized by two states:quiescent and active.Quiescent adult neural stem cells are more stable and guarantee the quantity and quality of the adult neural stem cell pool.Active adult neural stem cells are chara cterized by rapid proliferation and differentiation into neurons which allow for integration into neural circuits.This review focuses on diffe rences between quiescent and active adult neural stem cells in nutrition metabolism and protein homeostasis.Furthermore,we discuss the physiological significance and underlying advantages of these diffe rences.Due to the limited number of adult neural stem cells studies,we refe rred to studies of embryonic adult neural stem cells or non-mammalian adult neural stem cells to evaluate specific mechanisms. 展开更多
关键词 adult neurogenesis cell metabolic pathway cellular proliferation neural stem cell niches neural stem cells neuronal differentiation nutrient sensing pathway PROTEOSTASIS
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Vagus nerve stimulation in cerebral stroke:biological mechanisms,therapeutic modalities,clinical applications,and future directions 被引量:1
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作者 Li Du Xuan He +3 位作者 Xiaoxing Xiong Xu Zhang Zhihong Jian Zhenxing Yang 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第8期1707-1717,共11页
Stroke is a major disorder of the central nervous system that poses a serious threat to human life and quality of life.Many stro ke victims are left with long-term neurological dysfunction,which adversely affects the ... Stroke is a major disorder of the central nervous system that poses a serious threat to human life and quality of life.Many stro ke victims are left with long-term neurological dysfunction,which adversely affects the well-being of the individual and the broader socioeconomic impact.Currently,poststroke brain dysfunction is a major and difficult area of treatment.Vagus nerve stimulation is a Food and Drug Administration-approved exploratory treatment option for autis m,refractory depression,epilepsy,and Alzheimer’s disease.It is expected to be a novel therapeutic technique for the treatment of stroke owing to its association with multiple mechanisms such as alte ring neurotransmitters and the plasticity of central neuro ns.In animal models of acute ischemic stroke,vagus nerve stimulation has been shown to reduce infarct size,reduce post-stroke neurological damage,and improve learning and memory capacity in rats with stroke by reducing the inflammatory response,regulating bloodbrain barrier permeability,and promoting angiogenesis and neurogenesis.At present,vagus nerve stimulation includes both invasive and non-invasive vagus nerve stimulation.Clinical studies have found that invasive vagus nerve stimulation combined with rehabilitation therapy is effective in im proving upper limb motor and cognitive abilities in stroke patients.Further clinical studies have shown that non-invasive vagus nerve stimulation,including ear/ce rvical vagus nerve stimulation,can stimulate vagal projections to the central nervous system similarly to invasive vagus nerve stimulation and can have the same effect.In this paper,we first describe the multiple effects of vagus nerve stimulation in stroke,and then discuss in depth its neuroprotective mechanisms in ischemic stroke.We go on to outline the res ults of the current major clinical applications of invasive and non-invasive vagus nerve stimulation.Finally,we provide a more comprehensive evaluation of the advantages and disadvantages of different types of vagus nerve stimulation in the treatment of cerebral ischemia and provide an outlook on the developmental trends.We believe that vagus nerve stimulation,as an effective treatment for stroke,will be widely used in clinical practice to promote the recovery of stroke patients and reduce the incidence of disability. 展开更多
关键词 cerebral stroke NEUROPLASTICITY non-invasive vagus nerve stimulation REHABILITATION vagus nerve stimulation
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Ferroptosis:a potential therapeutic target for stroke 被引量:1
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作者 Chengli Liu Guijun Wang +2 位作者 Wenrui Han Qi Tian Mingchang Li 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第5期988-997,共10页
Ferroptosis is a form of regulated cell death characterized by massive iron accumulation and iron-dependent lipid peroxidation,differing from apoptosis,necroptosis,and autophagy in several aspects.Ferroptosis is regar... Ferroptosis is a form of regulated cell death characterized by massive iron accumulation and iron-dependent lipid peroxidation,differing from apoptosis,necroptosis,and autophagy in several aspects.Ferroptosis is regarded as a critical mechanism of a series of pathophysiological reactions after stroke because of iron overload caused by hemoglobin degradation and iron metabolism imbalance.In this review,we discuss ferroptosis-related metabolisms,important molecules directly or indirectly targeting iron metabolism and lipid peroxidation,and transcriptional regulation of ferroptosis,revealing the role of ferroptosis in the progression of stroke.We present updated progress in the intervention of ferroptosis as therapeutic strategies for stroke in vivo and in vitro and summarize the effects of ferroptosis inhibitors on stroke.Our review facilitates further understanding of ferroptosis pathogenesis in stroke,proposes new targets for the treatment of stroke,and suggests that more efforts should be made to investigate the mechanism of ferroptosis in stroke. 展开更多
关键词 cell death ferroptosis oxidative stress STROKE TREATMENT
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AGK2 pre-treatment protects against thioacetamide-induced acute liver failure via regulating the MFN2-PERK axis and ferroptosis signaling pathway 被引量:1
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作者 Qing-Qi Zhang Qian Chen +4 位作者 Pan Cao Chun-Xia Shi Lu-Yi Zhang Lu-Wen Wang Zuo-Jiong Gong 《Hepatobiliary & Pancreatic Diseases International》 SCIE CAS CSCD 2024年第1期43-51,共9页
Background:Acute liver failure(ALF)is an unpredictable and life-threatening critical illness.The pathological characteristic of ALF is massive necrosis of hepatocytes and lots of inflammatory cells infiltration which ... Background:Acute liver failure(ALF)is an unpredictable and life-threatening critical illness.The pathological characteristic of ALF is massive necrosis of hepatocytes and lots of inflammatory cells infiltration which may lead to multiple organ failure.Methods:Animals were divided into 3 groups,normal,thioacetamide(TAA,ALF model)and TAA+AGK2.Cultured L02 cells were divided into 5 groups,normal,TAA,TAA+mitofusin 2(MFN2)-siRNA,TAA+AGK2,and TAA+AGK2+MFN2-siRNA groups.The liver histology was evaluated with hematoxylin and eosin staining,inositol-requiring enzyme 1(IRE1),activating transcription factor 6β(ATF6β),protein kinase R(PKR)-like endoplasmic reticulum kinase(PERK)and phosphorylated-PERK(p-PERK).C/EBP homologous protein(CHOP),reactive oxygen species(ROS),MFN2 and glutathione peroxidase 4(GPX4)were measured with Western blotting,and cell viability and liver chemistry were also measured.Mitochondriaassociated endoplasmic reticulum membranes(MAMs)were measured by immunofluorescence.Results:The liver tissue in the ALF group had massive inflammatory cell infiltration and hepatocytes necrosis,which were reduced by AGK2 pre-treatment.In comparison to the normal group,apoptosis rate and levels of IRE1,ATF6β,p-PERK,CHOP,ROS and Fe2+in the TAA-induced ALF model group were significantly increased,which were decreased by AGK2 pre-treatment.The levels of MFN2 and GPX4 were decreased in TAA-induced mice compared with the normal group,which were enhanced by AGK2 pretreatment.Compared with the TAA-induced L02 cell,apoptosis rate and levels of IRE1,ATF6β,p-PERK,CHOP,ROS and Fe2+were further increased and levels of MFN2 and GPX4 were decreased in the MFN2-siRNA group.AGK2 pre-treatment decreased the apoptosis rate and levels of IRE1,ATF6β,p-PERK,CHOP,ROS and Fe2+and enhanced the protein expression of MFN2 and GPX4 in MFN2-siRNA treated L02 cell.Immunofluorescence observation showed that level of MAMs was promoted in the AGK2 pre-treatment group when compared with the TAA-induced group in both mice and L02 cells.Conclusions:The data suggested that AGK2 pre-treatment had hepatoprotective role in TAA-induced ALF via upregulating the expression of MFN2 and then inhibiting PERK and ferroptosis pathway in ALF. 展开更多
关键词 SIRT2 inhibitor AGK2 Acute liver failure MFN2 Ferroptosis
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Monitoring Surface Deformation Using Distributed Scatterers InSAR 被引量:1
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作者 LI Haocheng DONG Jie +1 位作者 WANG Yi’an LIAO Mingsheng 《Journal of Geodesy and Geoinformation Science》 CSCD 2024年第1期42-58,共17页
In the past two decades,extensive and in-depth research has been conducted on Time Series InSAR technology with the advancement of high-performance SAR satellites and the accumulation of big SAR data.The introduction ... In the past two decades,extensive and in-depth research has been conducted on Time Series InSAR technology with the advancement of high-performance SAR satellites and the accumulation of big SAR data.The introduction of distributed scatterers in Distributed Scatterers InSAR(DS-InSAR)has significantly expanded the application scenarios of InSAR geodetic measurement by increasing the number of measurement points.This study traces the history of DS-InSAR,presents the definition and characteristics of distributed scatterers,and focuses on exploring the relationships and distinctions among proposed algorithms in two crucial steps:statistically homogeneous pixel selection and phase optimization.Additionally,the latest research progress in this field is tracked and the possible development direction in the future is discussed.Through simulation experiments and two real InSAR case studies,the proposed algorithms are compared and verified,and the advantages of DS-InSAR in deformation measurement practice are demonstrated.This work not only offers insights into current trends and focal points for theoretical research on DS-InSAR but also provides practical cases and guidance for applied research. 展开更多
关键词 INSAR permanent scatterers distributed scatterers statistically homogeneous pixel selection phase optimization
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Exploring the impact of Nafion modifier on electrocatalytic CO_(2) reduction over Cu catalyst 被引量:1
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作者 Yingshi Su Yonghui Cheng +6 位作者 Zhen Li Yanjia Cui Caili Yang Ziyi Zhong Yibing Song Gongwei Wang Lin Zhuang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第1期543-551,I0012,共10页
Nafion as a universal polymer ionomer was widely applied for nanocatalysts electrode preparation.However,the effect of Nafion on electrocatalytic performance was often overlooked,especially for CO_(2)electrolysis.Here... Nafion as a universal polymer ionomer was widely applied for nanocatalysts electrode preparation.However,the effect of Nafion on electrocatalytic performance was often overlooked,especially for CO_(2)electrolysis.Herein,the key roles of Nafion for CO_(2)RR were systematically studied on Cu nanoparticles(NPs)electrocatalyst.We found that Nafion modifier not only inhibit hydrogen evolution reaction(HER)by decreasing the accessibility of H_(2)O from electrolyte to Cu NPs,and increase the CO_(2)concentration at electrocatalyst interface for enhancing the CO_(2)mass transfer process,but also activate CO_(2)molecule by Lewis acid-base interaction between Nafion and CO_(2)to accelerate the formation of^(*)CO,which favor of C–C coupling for boosting C_(2)product generation.Owing to these features,the HER selectivity was suppressed from 40.6%to 16.8%on optimal Cu@Nafion electrode at-1.2 V versus reversible hydrogen electrode(RHE),and as high as 73.5%faradaic efficiencies(FEs)of C_(2)products were achieved at the same applied potential,which was 2.6 times higher than that on bare Cu electrode(~28.3%).In addition,Nafion also contributed to the long-term stability by hinder Cu NPs morphology reconstruction.Thus,this work provides insights into the impact of Nafion on electrocatalytic CO_(2)RR performance. 展开更多
关键词 Nafion modifier CO_(2)reduction Cu nanoparticles In situ ATR-SEIRAS C_(2)product
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Real-time Rescue Target Detection Based on UAV Imagery for Flood Emergency Response 被引量:1
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作者 ZHAO Bofei SUI Haigang +2 位作者 ZHU Yihao LIU Chang WANG Wentao 《Journal of Geodesy and Geoinformation Science》 CSCD 2024年第1期74-89,共16页
Timely acquisition of rescue target information is critical for emergency response after a flood disaster.Unmanned Aerial Vehicles(UAVs)equipped with remote sensing capabilities offer distinct advantages,including hig... Timely acquisition of rescue target information is critical for emergency response after a flood disaster.Unmanned Aerial Vehicles(UAVs)equipped with remote sensing capabilities offer distinct advantages,including high-resolution imagery and exceptional mobility,making them well suited for monitoring flood extent and identifying rescue targets during floods.However,there are some challenges in interpreting rescue information in real time from flood images captured by UAVs,such as the complexity of the scenarios of UAV images,the lack of flood rescue target detection datasets and the limited real-time processing capabilities of the airborne on-board platform.Thus,we propose a real-time rescue target detection method for UAVs that is capable of efficiently delineating flood extent and identifying rescue targets(i.e.,pedestrians and vehicles trapped by floods).The proposed method achieves real-time rescue information extraction for UAV platforms by lightweight processing and fusion of flood extent extraction model and target detection model.The flood inundation range is extracted by the proposed method in real time and detects targets such as people and vehicles to be rescued based on this layer.Our experimental results demonstrate that the Intersection over Union(IoU)for flood water extraction reaches an impressive 80%,and the IoU for real-time flood water extraction stands at a commendable 76.4%.The information on flood stricken targets extracted by this method in real time can be used for flood emergency rescue. 展开更多
关键词 UAV flood extraction target rescue detection real time
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Lateral earth pressure of granular backfills on retaining walls with expanded polystyrene geofoam inclusions under limited surcharge loading 被引量:1
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作者 Kewei Fan Guangqing Yang +2 位作者 Weilie Zou Zhong Han Yang Shen 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2024年第4期1388-1397,共10页
Existing studies have focused on the behavior of the retaining wall equipped with expanded polystyrene(EPS)geofoam inclusions under semi-infinite surcharge loading rather than limited surcharge loading.In this paper,t... Existing studies have focused on the behavior of the retaining wall equipped with expanded polystyrene(EPS)geofoam inclusions under semi-infinite surcharge loading rather than limited surcharge loading.In this paper,the failure mode and the earth pressure acting on the rigid retaining wall with EPS geofoam inclusions and granular backfills(henceforth referred to as EPS-wall),under limited surcharge loading are investigated through two-and three-dimensional model tests.The testing results show that different from the sliding of almost all the backfill in the EPS-wall under semi-infinite surcharge loading,only an approximately triangular backfill slides in the wall under limited surcharge loading.The distribution of the lateral earth pressure on the EPS-wall under limited surcharge loading is non-linear,and the distribution changes from the increase of the wall depth to the decrease with the increase of the limited surcharge loading.An approach based on the force equilibrium of a differential element is developed to predict the lateral earth pressure behind the EPS-wall subjected to limited surcharge loading,and its performance was fully validated by the three-dimensional model tests. 展开更多
关键词 Retaining wall Expanded polystyrene(EPS)geofoam Limited surcharge loading Lateral earth pressure Model test Prediction
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Effects of seepage pressure on the mechanical behaviors and microstructure of sandstone 被引量:1
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作者 Xuewei Liu Juxiang Chen +3 位作者 Bin Liu Sai Wang Quansheng Liu Jin Luo 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2024年第6期2033-2051,共19页
Surrounding rocks of underground engineering are subjected to long-term seepage pressure,which can deteriorate the mechanical properties and cause serious disasters.In order to understand the impact of seepage pressur... Surrounding rocks of underground engineering are subjected to long-term seepage pressure,which can deteriorate the mechanical properties and cause serious disasters.In order to understand the impact of seepage pressure on the mechanical property of sandstone,uniaxial compression tests,P-wave velocity measurements,and nuclear magnetic resonance(NMR)tests were conducted on saturated sandstone samples with varied seepage pressures(i.e.0 MPa,3 MPa,4 MPa,5 MPa,6 MPa,7 MPa).The results demonstrate that the mechanical parameters(uniaxial compressive strength,peak strain,elastic modulus,and brittleness index),total energy,elastic strain energy,as well as elastic strain energy ratio,decrease with increasing seepage pressure,while the dissipation energy and dissipation energy ratio increase.Moreover,as seepage pressure increases,the micro-pores gradually transform into meso-pores and macro-pores.This increases the cumulative porosity of sandstone and decreases P-wave velocity.The numerical results indicate that as seepage pressure rises,the number of tensile cracks increases progressively,the angle range of microcracks is basically from 50-120to 80-100,and as a result,the failure mode transforms to the tensile-shear mixed failure mode.Finally,the effects of seepage pressure on mechanical properties were discussed.The results show that decrease in the effective stress and cohesion under the action of seepage pressure could lead to deterioration of strength behaviors of sandstone. 展开更多
关键词 Rock mechanics Mechanical property Seepage pressure Numerical simulation MICROCRACKS
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STAT3 ameliorates truncated tau-induced cognitive deficits 被引量:1
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作者 Bingge Zhang Huali Wan +7 位作者 Maimaitijiang Maierwufu Qian Liu Ting Li Ye He Xin Wang Gongping Liu Xiaoyue Hong Qiong Feng 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第4期915-922,共8页
Proteolytic cleavage of tau by asparagine endopeptidase(AEP)creates tau-N368 fragments,which may drive the pathophysiology associated with synaptic dysfunction and memory deterioration in the brain of Alzheimer’s dis... Proteolytic cleavage of tau by asparagine endopeptidase(AEP)creates tau-N368 fragments,which may drive the pathophysiology associated with synaptic dysfunction and memory deterioration in the brain of Alzheimer’s disease patients.Nonetheless,the molecular mechanisms of truncated tau-induced cognitive deficits remain unclear.Evidence suggests that signal transduction and activator of transcription-3(STAT3)is associated with modulating synaptic plasticity,cell apoptosis,and cognitive function.Using luciferase reporter assays,electrophoretic mobility shift assays,western blotting,and immunofluorescence,we found that human tau-N368 accumulation inhibited STAT3 activity by suppressing STAT3 translocation into the nucleus.Overexpression of STAT3 improved tau-N368-induced synaptic deficits and reduced neuronal loss,thereby improving the cognitive deficits in tau-N368 mice.Moreover,in tau-N368 mice,activation of STAT3 increased N-methyl-D-aspartic acid receptor levels,decreased Bcl-2 levels,reversed synaptic damage and neuronal loss,and thereby alleviated cognitive deficits caused by tau-N368.Taken together,STAT3 plays a critical role in truncated tau-related neuropathological changes.This indicates a new mechanism behind the effect of tau-N368 on synapses and memory deficits.STAT3 can be used as a new molecular target to treat tau-N368-induced protein pathology. 展开更多
关键词 Alzheimer’s disease apoptosis cognitive deficit memory neurodegenerative disease neuron loss N-methyl-D-aspartic acid receptor STAT3 SYNAPSE tau-N368
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