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SSRN 2024年

作者： Chen, Cai Li, Shu-Le Xu, Yao-Yang Graham, David W. Zhu, Yong-Guan Key Laboratory of Urban Environment and Health Ningbo Observation and Research Station Institute of Urban Environment Chinese Academy of Sciences Xiamen361021 China University of Chinese Academy of Sciences Beijing100049 China Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control CAS Haixi Industrial Technology Innovation Center in Beilun Ningbo315830 China School of Engineering Newcastle University Newcastle United Kingdom State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing100085 China

Background: Increasing antimicrobial resistance (AMR) is a global health crisis, threatening the fulfillment of multiple Sustainable Development Goals. Addressing AMR requires holistic solutions, and to guide One Health action. We systematically quantified the foci and distribution of AMR research since 2003, using a data-driven analytical framework constructed by Natural Language Processing (NLP) methods. The goal was to identify sectoral, methodological, regional, and global knowledge gaps to prioritise and refocus work needed to reduce AMR under a One Health ***: Here we complied 254,847 AMR-related manuscripts published over the past two decades through NLP methods, and established an information retrieval system and complex search approach to efficiently extract specific knowledge. Previous research foci and current knowledge gaps were identified, including work on specific pathogens, bacterial pathogen-drug combinations, antibiotic resistance genes (ARGs), ARGs-pathogen co-occurrence, and existing AMR surveillance methodologies. Additionally, we constructed intrasectoral and intersectoral AMR research co-occurrence networks to explore overlaps between sectors and integration needs to allow One Health ***: Results showed that our Artificial Intelligence (AI) methods for synthesizing and interpreting "big literature" were both efficient and robust. Our NLP-based model correctly categorized AMR manscripts with 97·4% accuracy (validated with a dataset containing 3000 manually tagged papers) and took about 0·6 microseconds to extract all related literature for specific topics. Our search showed that AMR publications have been dominated by research in the European, Central Asian, East Asian and Pacific regions, with scant work from Latin America and the Caribbean. Work in South Asia and some lower-middle-income countries (LMICs) tended to focus on alternate pathogens, such as Shigella spp. and Salmonella spp., which are prone to spread i

关键词： Search engines

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How will climate change affect the sources of global irrigation water withdrawal?

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Science Bulletin 2024年第21期69卷 3361-3364页

作者： Zhipin Ai Xin Zhao Julien Boulange Fadong Li Rashid Mahmood Qiuying Zhang Yonghui Yang Jun Xia Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 101408China Earth System Division National Institute for Environmental StudiesTsukuba 305-8506Japan United Graduate School of Agricultural Science Tokyo University of Agriculture and TechnologyTokyo 183-8509Japan Water Engineering and Management Asian Institute of TechnologyPathumthani 12120Thailand Chinese Research Academy of Environmental Sciences Beijing 100012China Center for Agricultural Resources Research Institute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuang 050021China State Key Laboratory of Water Resources Engineering and Management Wuhan UniversityWuhan 430072China

Irrigation plays a vital role in global food production,contributing approximately 40%of the total production[1],although the contribution varies by crop type[2,3].However,irrigation water withdrawal constitutes 65%–70%of total global anthropogenic water withdrawal[4,5],making it the largest water-use sector *** irrigation water demand,sources,and availability,particularly in the context of climate change,is crucial for identifying potential threats to crop production and ensuring future global food *** studies have focused extensively on the impacts of climate change on irrigation water demand and withdrawal[6–9];however,it remains unclear how climate change will affect the sources of irrigation water withdrawal.

关键词： irrigation withdrawal sources

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Research on the Mechanism and Impact Effect of Intelligent Pressure Control Dry Powder Fire Extinguishing Based on Intelligent Fire Fighting Devices

Research on the Mechanism and Impact Effect of Intelligent P...

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Artificial Intelligence, Human-Computer Interaction and Robotics (AIHCIR), International Conference on

作者： Shengli Chu Siyang Wang Shuli Jin Linsen Xiong Yixin Liu Yifan Gan Wenpei Zheng Key Laboratory of Oil & Gas Storage and Transportation Safety Risk Prevention Ministry of Emergency Management CNPC Research Institute of Safety & Environment Technology Beijing P. R. China Key Laboratory of Oil and Gas Safety and Emergency Technology Ministry of Emergency Management College of Safety and Ocean Engineering University of China University of Petroleum Beijing Beijing P. R. China

ISBN: (数字)9798331534035

ISBN: (纸本)9798331534042

In response to the high demand for intelligent fire extinguishing robots in various industries and the rapid development of research and design of robot fire extinguishing modules, a pressure controlled dry powder fire extinguishing experimental platform based on fire extinguishing technology has been developed. The experimental platform includes an experimental bench module, a dry powder automatic release module, a fire source simulation module, and a data acquisition module. By replacing different types of combustibles, adjusting the nitrogen driving pressure, adjusting the nozzle spray height and angle, adjusting the dry powder filling amount, adjusting the inclination angle of the dry powder tank, adjusting the position of the dry powder inlet and outlet, and adjusting the length of the built-in conduit, it is possible to simulate the controlled pressure dry powder fire extinguishing effect in different locations and scales of fires. Realize the intelligence and standardization of such experiments. Through onsite testing and application, it was found that the best fire extinguishing effect is achieved when the nitrogen drive is 0.3MPa, the dry powder pipe diameter is 8mm, the nozzle is horn shaped, and the dry powder loading ratio is 1.

关键词： Powders Service robots Loading Standardization Pressure control Market research Filling Nitrogen Protection Testing

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Magnetostrictive Tactile Sensor Array for Robotic Grasping

Magnetostrictive Tactile Sensor Array for Robotic Grasping

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2021中国智能自动化大会(CIAC 2021)

作者： Xuan Zhao Bowen Wang Shaoyang Gao Shasha Liu Yuanye Zhang Ling Weng State Key Laboratory of Reliability and Intelligence of Electrical Equipment School of Electrical EngineeringHebei University of Technology

Tactile sensors play a significant role in robotic grasping. This study compares the output characteristics of magnetostrictive sensor array and TakkTile sensor array which is a commercial product. Magnetostrictive sensor unit is composed of Galfenol wires, permanent magnets, Hall elements, bottom fixture and contact pad. Multiple magnetostrictive tactile sensors are integrated on the flexible printed circuit board to form a 3 × 3 magnetostrictive sensor array. The sensitivity of magnetostrictive sensor array is 48.47 m V/N, which is up to 380%higher than minimum value of the commercial sensor array. The recovery time is only 10 ms, 86.7% faster. Quantity available on ReFlex finger is twice the *** comparing the results of grasping experiments with the two types of sensor array, magnetostrictive sensor array exhibits simpler structure, smaller temperature drift and more accurate force measurement. Experimental results show that magnetostrictive sensor array can improve the result of robotic grasping.

关键词： Magnetostriction Sensor Robotic grasping

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Sulfur Vacancies-Induced "Electron Bridge" in Ni4mo/Sv-Znxcd1-Xs Regulates Electron Transfer for Efficient H2-Releasing Photocatalysis

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SSRN 2022年

作者： Zhang, Xin Gao, Manyi Qiu, Longyu Yang, Weiwei Yu, Yongsheng State Key Laboratory of Urban Water Resource and Environment School of Chemistry and Chemical Engineering Harbin Institute of Technology Heilongjiang Harbin150001 China

Despite the existence of plentiful photocatalyst heterojunctions, their separation efficiency and charge flow precision remain low on account of lacking interfacial modulation. Herein, through a defect-induced heterojunction constructing strategy, Ni 4 Mo alloys were in-situ grown on the unsaturated coordinated sulfur atoms of sulfur vacancies-rich ZCS (Sv-ZCS) via interfacial Ni-S covalent bonds. The experimental and theoretical results reveal that these unsaturated sulfur atoms induced by sulfur vacancies vastly facilitate to anchor more Ni-Mo nanoparticles and form abundant Ni-S covalent bonds, meanwhile, these sulfur vacancies could form internal electric field (IEF) and work with Ni-S covalent bonds as "Electron Bridge" to further accelerate photoelectrons transfer, as well as promote the dissociation of water molecules and the desorption of hydrogen proton. Accordingly, the optimized Ni 4 Mo/Sv-ZCS composite achieves an improved photocatalytic hydrogen evolution (PHE) rate of 94.69 mmol h -1 g -1 without an evident decrease after 6 cycles of photocatalytic tests, which is 21.2 and 1.94 times higher than those of Pt/ZCS and Ni 4 Mo/ZCS, respectively. This tactic opens a new way for optimizing Zn x Cd 1-x S-based heterojunctions by constructing sulfur vacancies and covalent bonds as "Electron Bridge" to enhance the activity of PHE. © 2022, The Authors. All rights reserved.

关键词： Electrons

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Dynamic Measurement of Flowing Microparticles in Microfluidics Using Pulsed Modulated Digital Holographic Microscopy

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SSRN 2025年

作者： Lei, Yunze Li, Yuge Wang, Xiaofang Zhuo, Kequn Ma, Ying An, Sha Zheng, Juanjuan Wen, Kai Yan, Lihe Gao, Peng School of Physics Xidian University Xi'An710071 China Key Laboratory of Optoelectronic Perception of Complex Environment Ministry of Education China Engineering Research Center of Functional Nanomaterials Universities of Shaanxi Province China Laboratory of Photonics Technology for Information School of Electronic Science and Engineering Xi’an Jiaotong University No. 28 Xianning West Road Xi’an710049 China

We propose a pulsed modulated digital holographic microscopy (PM-DHM) technique for the dynamic measurement of flowing microparticles in microfluidic systems. By digitally tuning the pulse width and the repetition rate of a laser source within a single-frame exposure, this method enables the recording of multiple images of flowing microparticles at different time points within a single hologram, allowing the quantification of velocity and acceleration. We demonstrate the feasibility of PM-DHM by measuring the velocity, acceleration, and forces exerted on PMMA microspheres and red blood cells flowing in microfluidic chips. Compared to traditional frame-sampling-based imaging methods, this technique has a much higher time resolution (in a range of microseconds) that is limited only by the pulse duration. This method demonstrates significant potential for high-throughput label-free flow cytometry detection and offers promising applications in drug development and cell analysis. © 2025, The Authors. All rights reserved.

关键词： Pulse repetition rate

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Optimized Titania Nanotubes Photoanode Mediated Photoelectrochemical Oxidation of Ammonia in Highly Chlorinated Wastewater Via Cl-Based Radicals

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SSRN 2022年

作者： Lu, Sen Li, Xuechuan Liao, Yunkai Zhang, Guan State Key Laboratory of Urban Water Resource and Environment Shenzhen Key Laboratory of Organic Pollution Prevention and Control School of Civil and Environmental Engineering Harbin Institute of Technology Shenzhen Shenzhen518055 China

Efficient removal of low-concentration ammonia from chlorinated wastewater is a challenge for decentralized wastewater treatment due to its notorious environmental effect and lethal influence on aquaculture. Photoelectrocatalytic (PEC) oxidation process is considered as an efficient and environment–friendly approach, whereas a low-cost and stable photoanode is crucial. In this study, TiO2 nanotubes (TNTs) photoanode (Ar–TNT–500 ℃) with excellent physicochemical and photoelectrochemical properties was prepared by optimizing the parameters of anodization, including the voltage/times of anodization and the atmosphere/temperature of heat treatment. During the synthesis, the electrochemical and heat treatment processes promoted the formation of oxygen vacancies (OV) on the TNTs surface and enhanced its electrocatalytic activity. The optimized Ar–TNT–500 ℃ photoanode could selectively convert ammonia to N2 (86%) and a small amount of nitrate (14%). Radical quenching and probe experiments confirmed that the ClO• produced by rapid quenching of •OH and Cl• by free chlorine dominated the selective degradation of ammonia in the synergistic process of photocatalysis and electrocatalysis. The cycle of chlorine-based radicals (ClO• and Cl•) and Cl– provided a continuous and efficient ammonia oxidation system, because chlorine-based radicals could efficiently and selectively oxidize ammonia and reduce the production of toxic (per) chlorate. © 2022, The Authors. All rights reserved.

关键词： Ammonia

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A new strategy to construct MOF-on-MOF derivatives for the removal of tetracycline hydrochloride from water by activation of peroxymonosulfate

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Chemosphere 2024年 362卷 142676页

作者： Hu, Fengtao Ning, Shunyan Li, Zengzhiqiang Zhu, Hao Fujita, Toyohisa Yin, Xiangbiao Chen, Lifeng Zeng, Deqian Hamza, Mohammed F. Wei, Yuezhou Wang, Xinpeng State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials School of Resources Environment and Materials Guangxi University Nanning530004 China School of Nuclear Science and Technology University of South China 28 Changsheng West Road Hengyang421001 China School of Nuclear Science and Engineering Shanghai Jiao Tong University 800 Dong Chuan Road Shanghai200240 China

A MOF-on-MOF composite derivative material named ZIF-67@Ce-MOF-600 was designed and synthesized. The preparation of ZIF-67@Ce-MOF-600 was optimized from the aspects of the ratio of metal and ligand, heat-treatment temperature. It was demonstrated by XRD, FT-IR, SEM-EDS and TEM. The optimum conditions for the activation of PMS by ZIF-67@Ce-MOF-600 for the degradation of tetracycline (TC) were investigated by adjusting the catalyst dosage, TC, pH, peoxymonosulfate (PMS) concentration, and different kinds of water, co-existing anions and pollution. Under optimal conditions (20 mg catalysts and 50 mg PMS added) in 100 mL of tetracyclines (TC) solvent (20 mg TC/L), the removal rate could reach up to 99.2% and after five cycles was 70.5%. The EPR results indicated the presence of free radicals and non-free radical, among which free radicals intended to play a major role in the degradation process. Its possible degradation pathways and attack sites were analyzed by liquid-phase mass spectrometry and DFT analysis. © 2024 Elsevier Ltd

关键词： Mass spectrometry

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Design of Rich Defects Carbon Coated Mnfe2O4/LamnO3/LafeO3 Heterostructure Nanocomposites for Broadband Electromagnetic Wave Absorption

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SSRN 2023年

作者： Liu, Xinyang He, Lin Han, Guanghui Sheng, Jie Yu, Yongsheng Yang, Weiwei MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Heilongjiang Harbin150001 China Space Environment Simulation Research Infrastructure Harbin Institute of Technology Harbin150001 China

The precise construction of abundant heterointerfaces and defects in manganese ferrite for efficient electromagnetic wave (EMW) absorption is highly appealing, yet remains a grand challenge. Herein, we report a class of carbon-coated MnFe2O4/LaMnO3/LaFeO3 heterostructure nanocomposites with foam-like porous structures for enhancing EMW absorption. The optimized sample (the molar ratio of Mn:Fe:La is 1:2:1) delivers extraordinary absorption performance of the minimum reflection loss reaches -68.25 dB at 4.24 GHz, along with the maximum effective absorption (RL≤-10 dB) bandwidth is 12.26 GHz (3.11-15.37 GHz) at a thickness of 3.9 mm. EMW absorption mechanism reveals that the multiple polarizations induced by adjustable heterointerfaces and abundant defects in spinel/perovskite nanocomposites enhance its dielectric loss capacity, resulting in impressive EMW absorption performance. Moreover, the amorphous carbon shell further optimizes impedance matching. This study not only provides a good reference for future preparation of microwave absorbing materials with rich heterogeneous interfaces and defects but also broadens the application of such kinds of carbon-coated spinel/perovskite nanocomposites. © 2023, The Authors. All rights reserved.

关键词： Polarization

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Silver Nanoparticles Altered Soil Microbial Activity and Carbon Dynamics: Unraveling Microbial Sensitivities and Ecosystem Responses

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SSRN 2023年

作者： Hong, Xincheng Song, Yudi Cao, Dongdong Xu, Shengwen Gao, Feng Fan, Haoxin Yao, Huaiying Research Center for Environmental Ecology and Engineering School of Environmental Ecology and BiologicalEngineering Wuhan Institute of Technology Wuhan430205 China Department of Pharmacy and Laboratory Medicine Heze Medical College Shandong274000 China Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control Ningbo Urban Environment Observation and Research Station Chinese Academy of Sciences Ningbo China Key Laboratory of Urban Environment and Health Institute of Urban Environment Chinese Academy of Sciences Xiamen361021 China

Silver nanoparticles (AgNPs) are popular for their antimicrobial properties but their effects on soil carbon cycles remain unclear. This study explored AgNPs' impact on soil carbon dynamics and related microbial structures. Topsoil samples were treated with varying AgNPs concentrations (1, 10, 100, 500, and 1000 mg kg-1) over 56 days. We assessed carbon mineralization, dissolved organic carbon (DOC), microbial biomass carbon (MBC), metabolic quotient (qCO2), and enzymatic activities of β-glucosidase, β-xylosidase, and cellobiohydrolase. Using 13C-labeled DOC, microbial carbon use efficiency (CUE) was evaluated, and 13C-phospholipid fatty acid assays traced carbon assimilation by soil microbes. Higher AgNPs levels significantly increased CO2 emissions, while soil DOC and qCO2 were influenced by AgNPs dose and exposure time. Enzyme activities varied with AgNPs concentration, and the highest dose showed a 49.7% CUE rise by day 56. AgNPs altered microbial biomass and shifted microbial populations, favoring Gram-negative bacteria. Collectively, these findings underscore the ecological implications of AgNPs on soil health and shed light on their role in disrupting soil microbial networks and carbon flow dynamics. © 2023, The Authors. All rights reserved.

关键词： Silver nanoparticles

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