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SSRN 2024年

作者： Zi, Shuangshuang Li, Yan Zhang, Jingwen Hou, Chengcheng Lin, Huiqing Xu, Zhengjie Dong, Jinwei Fu, Bojie State Key Laboratory of Earth Surface Processes and Resource Ecology Faculty of Geographical Science Beijing Normal University Beijing China Institute of Land Surface System and Sustainable Development Faculty of Geographical Science Beijing Normal University Beijing China School of Civil Engineering Center of Water Resources and Environment Sun Yat-sen University Zhuhai China Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing100101 China

Irrigation is critical for food production, especially in arid and semi-arid regions. Irrigation has complex and interactive effects on local climate, evapotranspiration, and crop growth. Here we use satellite remote sensing data and statistical models to quantify the biophysical irrigation effects on land surface temperature (LST), evapotranspiration (ET), crop greenness and crop yield effects in China’s drylands. Results show that during 2001-2012, irrigation in China's drylands leads to a significant cooling effect on daytime LST (-0.52 °C), a weak cooling effect on nighttime LST (-0.14 °C), an increase in ET (+0.16 mm/d), and enhanced crop greenness (+0.02) and maize yields (+3.4 ton/ha;55%) compared with rainfed croplands. The irrigation effects have strong spatiotemporal variations, with greater effects in the dry regions/periods with higher irrigation intensity. It needs to be noted that the irrigation cooling effects have gradually weakened since 2001, while the enhanced effects on ET, greenness and maize yields are still increasing. This is mainly driven by the decline in irrigation water use but the increase in irrigation water productivity due to the adoption of water-saving irrigation technologies. This study improves our understanding on the irrigation effects and their responses to changing irrigation practices and climate in water-limited regions. © 2024, The Authors. All rights reserved.

关键词： Evapotranspiration

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Waveform simulation in PandaX-4T

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Chinese Physics C 2024年第7期48卷 1-13页

作者：李家富阿卜杜萨拉姆薄子豪陈葳谌勋程晨成赵侃崔祥仪樊英杰方德清耿立升 Karl Giboni 郭绪元韩晨成韩柯何昶达何金荣黄迪黄俊挺黄周侯汝全侯钰季向东巨永林李晨翔李名川李帅杰李涛林箐刘江来陆聪聪芦晓盈罗棱尹罗云阳马文博马余刚冒亚军孟月宁旭阳庞彬宇祁宁春钱志成任祥祥 Nasir Shaheed 尚晓凤邵熙元申国防司琳孙文良谈安迪陶奕王安庆王萌王秋红王少博王思广王为王秀丽王旭王舟魏月环武蒙蒙邬维浩吴渊肖梦姣肖翔燕斌斌阎玺宇杨勇喻纯旭袁影苑哲运有辉曾鑫宁张敏桢张鹏张世博张澍张涛张威张洋张瀛心张园园赵力周济芳周宁周小朋周永周钰博周知震 School of Physics and Astronomy Shanghai Jiao Tong UniversityKey Laboratory for Particle Astrophysics and Cosmology(MoE)Shanghai Key Laboratory for Particle Physics and CosmologyShanghai 200240China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China School of Physics Beihang UniversityBeijing 102206China International Research Center for Nuclei and Particles in the Cosmos&Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang UniversityBeijing 100191China School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China School of Physics Peking UniversityBeijing 100871China Yalong River Hydropower Development Company Ltd.288 Shuanglin RoadChengdu 610051China Research Center for Particle Science and Technology Institute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237China Key Laboratory of Particle Physics and Particle Irradiation of Ministry of Education Shandong UniversityQingdao 266237China Department of Physics University of MarylandCollege ParkMaryland 20742USA Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghai200240China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Physics Sun Yat-Sen UniversityGuangzhou 510275China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China School of Physics and Astronomy Sun Yat-Sen UniversityZhuhai 519082China School of Physics Nankai UniversityTianjin 300071China Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China Shanghai Jiao Tong University Sichuan Research Institute Chengdu 610213China SJTU Paris Elite Institute of Technology Shanghai Jiao Tong UniversityShanghai 200240China Department of Physics Yantai UniversityYantai 264005Ch

Signal reconstruction through software processing is a crucial component of the background and signal models in the PandaX-4T experiment,which is a multi-tonne dark matter direct search *** accuracy of signal reconstruction is influenced by various detector artifacts,including noise,dark count of photomultiplier,photoionization of impurities in the detector,and other relevant *** this study,we presented a detailed description of a semi-data-driven approach designed to simulate a signal *** work provides a reliable model for the efficiency and bias of the signal reconstruction in the data analysis of *** comparing critical variables that relate to the temporal shape and hit pattern of the signals,we found good agreement between the simulation and data.

关键词： dark matter time projection chamber simulation

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Mapping the spatio-temporal dynamics of global mangrove crabs to reveal its status and challenges: A bibliometric evaluation of research output during 1980–2016

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Watershed Ecology and the Environment 2022年 4卷 100-111页

作者： Chen, Guogui Mo, Yuanyuan Gu, Xuan Wang, Wenqing Cui, Baoshan Research and Development Center for Watershed Environmental Eco-Engineering Advanced Institute of Natural Sciences Beijing Normal University Zhuhai China State Key Laboratory of Water Environmental Simulation School of Environment Beijing Normal University Beijing China Yellow River Estuary Wetland Ecosystem Observation and Research Station Ministry of Education Dongying China Key Laboratory of the Coastal and Wetland Ecosystems (Xiamen University) Ministry of Education College of the Environment and Ecology Xiamen University Fujian Xiamen 361102 China Aquatic Ecohealth Group Fujian Key Laboratory of Watershed Ecology Key Laboratory of Urban Environment and Health Institute of Urban Environment Chinese Academy of Sciences Xiamen 361021 China University of Chinese Academy of Sciences Beijing 100049 China

Crabs are the most dominant groups in mangrove ecosystem and play a vital role in building and sustaining the structure and function of the mangrove ecosystems. However, a systematic evaluation of global research status of mangrove crabs is still lacking. Here, a bibliometric analysis based on the Science Citation Index Expanded (SCI-E) was carried out to provide insights into research activities, tendencies, and challenges of the mangrove crabs from 1980 to 2016. The results showed that the average annual output of the publications was low. Brazil took a leading position out of the 63 countries/territories with the largest number of publications, followed by USA, Australia, China, and Germany. Journal of Experimental Marine Biology and Ecology was the most popular journal. The reproductive ecology (e.g., reproduction), population ecology (e.g., population structure), and their relationship were the mainstream. The estuarine ecosystem and the method of stable isotope received ecologists’ favor. Behavioral ecology (e.g., bioturbation), ecosystem function (e.g., carbon), and the ecological effect among them were the main issues in this field. Biodiversity was a new hot topic. Brazil, Australia, USA, China, and Kenya were the top five hot regions among the 53 hot countries on a global scale. Different regions have different hot topics. The breeding ecology was the most popular theme in the Americas region, the ecological effects of crabs were the most hotstops in the Africa-East Asia region and the East and South Asia-Oceania region. The challenges of the development were not comprehensive and uneven on a global scale. There was a certain number of countries with mangrove distributions were still outside this field, such as most of the western and northeastern countries of Africa (e.g., Angola), some Central American countries (e.g., Guatemala), and some western and southeast Asian countries (e.g., Cambodia). Furthermore, we found that some topics were ignored or lagge

关键词： Bibliometric Challenges Hotspot Mangrove crabs Spatio-temporal dynamics

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Enhancing wearable strain sensor performance through a simple Poisson's ratio structural design

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Chemical engineering Journal 2025年 518卷

作者： Xinchun Luo Kaiqi Chen Zeren Deng Wenjie Luo Shiyuan Wei Jiating Zheng Xin Wu Gangfeng Ouyang School of Chemical Engineering and Technology Sun Yat-sen University Zhuhai Guangdong 519082 China GAC Automotive Research & Development Center Guangzhou 511434 China GuangDong BATF INDUSTRY CO.LTD GuangDong China

Wearable strain sensors have garnered significant research interest due to their vast potential in biomedicine, health monitoring, and artificial intelligence. However, achieving high sensitivity, excellent mechanical properties, stability, and a wide working range remains a critical challenge in sensor development. To address this, we propose a novel Poisson's ratio structural strategy to enhance sensor performance. Using multi-walled carbon nanotubes (MWCNT) and 1-pyrenecarboxylic acid (PCA) as conductive fillers, we first synthesized highly conductive thermoplastic polyurethane (TPU). Leveraging 3D printing technology, we designed and fabricated three distinct structural configurations: positive (PPR), negative (NPR), and zero Poisson's ratio (ZPR) sensors. Mechanical testing revealed that the NPR-structured TPU exhibits exceptional flexibility, with an elongation at break of 872.3 %. In sensing performance, the PPR sensor demonstrated ultrahigh sensitivity, achieving a gauge factor (GF) of 12,773.63 at 300 % strain. Meanwhile, the NPR sensor outperformed in low-strain regimes (0–50 %), showing higher relative resistance changes and superior detection capability. Additionally, all sensors exhibited outstanding dynamic stability during long-term cyclic tests. By combining microstructural characterization and finite element simulations, we elucidated two distinct sensing mechanisms governing small- and large-strain behaviors. Furthermore, practical applicability was validated through precise detection of human micromotions and large-scale movements. This work pioneers a Poisson's ratio structure-driven approach to sensor optimization, leveraging structural-design and 3D printing to unlock new possibilities of wearable devices in end-use scenarios like health monitoring and robotics, greatly advancing the state-of-the-art in wearable electronics.

关键词： Structural dynamics

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Impacts of Climate Change on Natural Hazards Caused by Extreme Climate Events in Chinese National Parks from 1961 to 2020

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SSRN 2022年

作者： Hou, Congyu Ma, Bingran Ouyang, Wei Hu, Jingyi Ling, Li Zeng, Weihua Yang, Zhifeng Advanced Interdisciplinary Institute of Environment and Ecology Beijing Normal University Zhuhai519087 China School of Environment Beijing Normal University Beijing100875 China Research and Development Center for Watershed Environmental Eco-Engineering Beijing Normal University Zhuhai519087 China Faculty of Geographical Science Beijing Normal University Beijing100875 China Northwest Institute of Plateau Biology Chinese Academy of Sciences Key Laboratory of Adaptation and Evolution of Plateau Biota Xining810001 China

Climate change is expected to be the most challenging difficulty among all the difficulties encountered during the operation of national parks to preserve biodiversity and natural ecosystems, but the interactions between climate change and biodiversity remain unclear and challenging. Furthermore, previous research has shown that compared with gradual climate change, the natural hazards caused by extreme climate events resulting from climate change are expected to cause more serious losses in biodiversity and damage to local ecosystems during extreme climate events. Here, to enhance our understanding of the interactions between biodiversity and the natural hazards triggered by extreme climate events, we determined and evaluated the impacts of climate change on the spatial and temporal distribution tendencies of extreme climate events in Chinese national parks from 1961 to 2020 using high-resolution gridded climate data. Based on our results, the Three-River-Source National Park has experienced the highest ecological risks among all Chinese national parks from the natural hazards triggered by extreme climate events. Droughts, wildfires, and declines in false spring were the main increasing ecological natural hazard threats in Three-River-Source National Park, and their environmental consequences included the loss of unique biodiversity and ecosystems, loss of wetlands, and wildfire threats lasting from late summer to fall. Our results suggested that immediate actions against the natural hazards mentioned above and higher ecological compensation to national park communities are recommended in Three-River-Source National Park for better environmental protection results. This study can also provide a reference for risk management of extreme climate events on protected areas all over the world. © 2022, The Authors. All rights reserved.

关键词： Climate change

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Freestanding Catalytic Membranes Assembled from Blade-Shaped Prussian Blue Analog Sheets for Flow-Through Degradation of Antibiotic Pollutants

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SSRN 2023年

作者： Li, Jiaxin Yi, Huiyu Liang, Chenge Shen, Yi Li, Yungui Fang, Qile Research and Development Center for Watershed Environmental Eco-Engineering Beijing Normal University Zhuhai519087 China State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University Beijing100875 China Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province College of Environment Zhejiang University of Technology Hangzhou310032 China Sichuan Provincial Sci-Tech Cooperation Base of Low-cost Wastewater Treatment Technology Department of Environmental Engineering Southwest University of Science and Technology Mianyang621010 China

Membrane catalysis is a frontier technology for effectively removing organic containments, and burgeoning membranes assembled from two-dimensional (2D) materials have significantly flourished in peroxymonosulfate (PMS)-based catalytic membrane processes. Here, a bottom-up strategy based on restricting CoFe Prussian blue analog (PBA) crystal growth in one direction is used to fabricate large-scale 2D blade-shaped PBA sheets, whose radial size and thickness can be adjusted by the precursor ion ratio (CoII/FeII). The stripe CoFe PBA sheets can directly serve as building blocks and are simply assembled into a free-standing 2D membrane by interweaving assembly. The assembled CoFe PBA catalytic membrane possesses excellent wetting properties, guaranteeing an unimpeded mass transfer process, which leads to a superior instantaneous catalytic performance for the antibiotic norfloxacin during the continuous and flow-through membrane catalytic process. SO4•− and 1O2 are demonstrated to be the main active species, which synergistically contribute to the PMS-driven organic degradation. © 2023, The Authors. All rights reserved.

关键词： Antibiotics

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Does the Energy-Water Nexus Affect The Regional Energy And Water Systems Of Urban Agglomerations?

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SSRN 2024年

作者： Chen, Qionghong Liu, Yufei Su, Meirong Hu, Yuanchao Cao, Xiujuan Teng, Yanmin Xu, Chao Dang, Zhi Lu, Guining Advanced Interdisciplinary Institute of Environment and Ecology Beijing Normal University Zhuhai Campus Zhuhai519087 China Research Center for Eco-Environmental Engineering Dongguan University of Technology Dongguan523808 China Guangzhou Urban Drainage Co. Ltd. Guangzhou510006 China Key Laboratory for City Cluster Environmental Safety and Green Development The Ministry of Education School of Ecology Environment and Resources Guangdong University of Technology Guangzhou510006 China School of Resource and Environmental Sciences Wuhan University Wuhan430079 China Guangdong Urban-Rural Planning and Design Research Institute Technology Group Co. Ltd. Guangzhou510006 China Institute of Geography Humboldt University of Berlin Berlin12489 Germany School of Environment and Energy South China University of Technology Guangzhou510006 China

Interaction between energy and water exists widely within a city and among different cities in an urban agglomeration (UA). However, certain issues regarding such interactions (i.e., the energy–water nexus;EWN) remain unclear, e.g., whether and how the EWN affects traditional understanding and management of a regional single-resource system. Here, we present a multiregional network approach to analyze a UA from the EWN perspective to assess the impact of the complex interactions within the UA on regional energy and water systems. A nexus network was constructed by modeling EWN flows between the cities and economic sectors of the Pearl River Delta UA (China). The key sectors and flows within the region were identified based on multidimension ecological network analysis, which synthesized the nature of the system circulation rate, system sustainability, ecological structure, and network dynamics. Results revealed notable changes in the Finn’s cycling index and the control/dependency relationships among cities and sectors following inclusion of the nexus, together with marked changes in the system robustness and network structure of the UA. The EWN contributed to improvement in both the cycling rate and the system robustness of the UA, but it remained far lower than that of sustainable natural systems, reflecting insufficient interaction of energy and water, especially in relation to the Manufacturing, Electricity and gas supply, and Other services. The nexus effect on the control relationship for energy and water systems was mainly concentrated in the internal sectors of the city, but the nexus effect on the dependence relationship was mainly concentrated between cities. The method used in this study provides a basis for future EWN-based analyses and modeling of UAs. © 2024, The Authors. All rights reserved.

关键词： Ecology

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Freestanding Catalytic Membranes Assembled from Blade-Shaped Prussian Blue Analog Sheets for Flow-Through Degradation of Antibiotic Pollutants

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SSRN 2023年

关键词： Antibiotics

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Three-level all-fiber laser at 915 nm based on polarization-maintaining Nd^3+-doped silica fiber

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Chinese Optics Letters 2020年第1期18卷 40-43页

作者： Yafei Wang Xingyu Li Jiamin Wu Xiulin Peng Jiangkun Cao Changsheng Yang Shanhui Xu Zhongmin Yang Mingying Pen State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied TechniquesGuangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and DevicesSchool of Materials Science and TechnologySouth China University of TechnologyGuangzhou 510640China Guangdong Engineering Technology Research and Development Center of High-performance Fiber Laser Techniques and Equipments Zhuhai 519031China

Nd3+-doped fiber lasers at around 900 nm based on the 4F3/2→4I9/2 transition have obtained much research attention since they can be used as the laser sources for generating pure blue fiber lasers through the frequency ***,an all-fiber laser at 915 nm was realized by polarization-maintaining Nd3+-doped silica fiber.A net gain per unit length of up to 1.0 dB/cm at 915 nm was obtained from a 4.5 cm fiber,which to our best knowledge is the highest gain coefficient reported in this kind of silica *** optical-to-optical conversion efficiency varies with the active fiber length and the reflectivity of the output fiber Bragg grating(FBG),presenting an optimal value of 5.3%at 5.1 cm fiber length and 70%reflectivity of the low reflection ***,the linear distributed Bragg reflector short cavity was constructed to explore its potential in realizing single-frequency 915 nm fiber *** measurement result of longitudinal-mode properties shows it is still multi-longitudinal mode laser operation with 40 mm laser *** results indicate that the Nd3+-doped silica fiber could be used to realize all-fiber laser at 915 nm,which presents potential to be the seed source of high-power fiber laser.

关键词： fiber laser laser materials neodymium

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Dual effects of climate change and socioeconomic development on flood exposure in the Yellow River Basin, China

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Journal of Hydrology: Regional Studies 2025年 60卷

作者： Sun, Yixin Zhang, Qiang Wang, Gang Xu, Chong-Yu Singh, Vijay P. Da Liu Zhang, Kaiwen Feng, Anlan Ma, Hushuang Faculty of Geographical Science Beijing Normal University Beijing 100875 China Advanced Interdisciplinary Institute of Environment and Ecology Guangdong Provincial Key Laboratory of Wastewater Information Analysis and Early Warning Beijing Normal University Zhuhai China Guangdong Basic Research Center of Excellence for Ecological Security and Green Development School of Ecology Environment and Resources Guangdong University of Technology Guangzhou 510006 China Department of Geosciences and Hydrology University of Oslo Oslo Norway Department of Biological and Agricultural Engineering Zachry Department of Civil and Environmental Engineering Texas A&M University College Station TX United States National Water and Energy Center UAE University Al Ain UAE United States Guangdong Research Institute of Water Resources and Hydropower Guangzhou 510635 China

Study region: The Yellow River Basin (YRB) in China. Study focus: This research constructs and evaluates future flood-inundated urban land, population exposure, and GDP exposure in the YRB under various SSP-RCP scenarios. It also discusses the contributions of different factors to changes in exposure and quantifies the future flood control efficiency of flood protection measures. New hydrological insights for the region: We find that provinces in the lower YRB have a higher proportion of flood-inundated urban land. By the end of the 21st century, the proportion of flood-inundated urban land of the cities in lower YRB is expected to increase. Meanwhile, the average population exposure in the YRB under different SSP scenarios will decrease by 6.22–47.23 %, while GDP exposure will increase by 68–72 % across all SSP scenarios. Compared to climate change, socio-economic development is the primary factor influencing flood exposure. Considering flood protection measures, the lower YRB exhibit higher flood control efficiency, while middle and upper YRB still face high exposure due to insufficient effectiveness of protection measures. Protective efficiency of existing flood control measures will further decline with climate change: by the end of the 21st century, only 25 % of cities in the YRB will effectively reduce population exposure, and 35 % will mitigate GDP exposure. © 2025 The Authors

关键词： Climate change Flood exposure Socio-economy SSP-RCP scenarios Urban expansion

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