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中国水利水电科学研究院学报(中英文) 2024年

作者： DUAN Yuanyuan CHEN Xiuhua liu Jun YE Mao LU Wenjing liu Hongjie China Institute of Water Resources and Hydropower Research Application Center of Remote Sensing Technology Research Center on Flood & Drought Disaster Prevention and Reduction of the Ministry of Water Resources Qingdao Comcore Technologies Co. Ltd Sucheng District Water Resources Bureau

Abstract:The rapid identification of planting patterns for major crops in a large irrigated district has vital importance for irrigation management,water fee collection,and crop yield *** this study,the OTSU algorithm and Mean-Shift algorithm were employed to automatically determine threshold values for mapping two main rotated crop patterns at the pixel scale.A time series analysis was conducted to extract the spatial distribution of rice-wheat and wheat-maize rotations in the Chuanhang irrigation district from 2016 to *** results demonstrate that both threshold segmentation algorithms are reliable in extracting the spatial distribution of the crops,with an overall accuracy exceeding 80%.Additionally,both Kappa coefficients surpass 0.7,indicating better performance by OTSU *** the period from 2016 to 2020,the area occupied by ricewheat rotation cropping ranged from 12 500 to 14 400 hm2;whereas wheat-maize rotation cropping exhibited smaller and more variable areas ranging from 19730 to 34070 *** findings highlight how remote sensing-based approaches can provide reliable support for rapidly and accurately identifying the spatial distribution of main crop rotation patterns within a large irrigation district.

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Simulation and reconstruction of particle trajectories in the CEPC drift chamber

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Nuclear Science and Techniques 2024年第8期35卷 9-22页

作者： Meng‑Yao liu Wei‑Dong Li Xing‑Tao Huang Yao Zhang Tao Lin Ye Yuan Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237China Institute of High Energy Physics Beijing 100049China University of Chinese Academy of Sciences Beijing 100049China

The circular electron-positron collider(CEPC)is designed to precisely measure the properties of the Higgs boson,study electroweak interactions at the Z-boson peak,and search for new physics beyond the Standard *** a component of the 4th conceptual CEPC detector,the drift chamber facilitates the measurement of charged *** study implemented a Geant4-based simulation and track reconstruction for the drift *** the simulation,detector construction and response were implemented and added to the CEPC simulation *** development of track reconstruction involves track finding using the combinatorial Kalman filter method and track fitting using the tool of *** the simulated data,the tracking performance was *** results showed that both the reconstruction resolution and tracking efficiency satisfied the requirements of the CEPC experiment.

关键词： CEPC Drift chamber Detector simulation Track reconstruction

Trajectory Tracking for MmWave Communication Systems via Cooperative Passive Sensing

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ZTE Communications 2024年第3期22卷 29-36页

作者： YU Chao LYU Bojie QIU Haoyu WANG rui Department of Electronic and Electrical Engineering Southern University of Science and TechnologyShenzhen 518000China

A cooperative passive sensing framework for millimeter wave(mmWave)communication systems is proposed and demonstrated in a scenario with one mobile signal ***,in the uplink communication with at least two transmitters,a cooperative detection method is proposed for the receiver to track the blocker’s trajectory,localize the transmitters and detect the potential link blockage *** facilitate detection,the receiver collects the signal of each transmitter along a line-of-sight(LoS)path and a non-line-of-sight(NLoS)path separately via two narrow-beam phased *** NLoS path involves scattering at the mobile blocker,allowing its identification through the Doppler *** comparing the received signals of both paths,the Doppler frequency and angle-of-arrival(AoA)of the NLoS path can be *** resolve the blocker’s trajectory and the transmitters’locations,the receiver should continuously track the mobile blocker to accumulate sufficient numbers of the Doppler frequency and AoA versus time ***,a gradient-descent-based algorithm is proposed for joint *** the reconstructed trajectory,the potential link blockage can be *** is demonstrated that the system can achieve decimeterlevel localization and trajectory estimation,and predict the blockage time with an error of less than 0.1 s.

关键词： mmWave communications integrated sensing and communication trajectory tracking passive sensing

英国“联合学校”政策的发展及其对我国集团化办学的启示

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教学与管理 2024年第9期 97-102页

作者：解瑞君郭蕊长春师范大学教育学院长春130032

基础教育集团化办学是实现基础教育优质均衡发展,提高教育质量的重要举措之一。英国“联合学校”政策经历了形成期、发展期、成熟期、深化期四个发展时期,其政策目标是为实现新工党“第三条道路”的理念、建立21世纪世界一流的学校体系... 详细信息

基础教育集团化办学是实现基础教育优质均衡发展,提高教育质量的重要举措之一。英国“联合学校”政策经历了形成期、发展期、成熟期、深化期四个发展时期,其政策目标是为实现新工党“第三条道路”的理念、建立21世纪世界一流的学校体系、改善薄弱学校教育环境。基于对英国“联合学校”政策发展历程的揭示和目标的阐述,可以发现其政策的实践主要通过以下三条路径:长期目标与短期目标相结合、管理模式与管理效率相结合、监督体系与监督框架相结合。通过对英国“联合学校”政策的研究,以期为促进我国基础教育集团化办学的高效运行提供借鉴。

关键词：基础教育优质均衡发展英国联合学校集团化办学

溺爱型家庭教养方式对小学生情绪管理的影响及干预对策

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当代教研论丛 2024年第6期10卷 59-62页

作者：刘睿歆上海理工大学附属小学上海200093

目前已有研究证明家庭教养方式对于小学生的心理健康有较显著的影响。本研究针对溺爱型教养方式家庭的学生,采用个案研究的方式,探究四年级学生小A情绪失控的原因,着眼于学生情绪管理问题,提出对溺爱型家庭中情绪管理不良的小学生的综... 详细信息

目前已有研究证明家庭教养方式对于小学生的心理健康有较显著的影响。本研究针对溺爱型教养方式家庭的学生,采用个案研究的方式,探究四年级学生小A情绪失控的原因,着眼于学生情绪管理问题,提出对溺爱型家庭中情绪管理不良的小学生的综合干预对策。

关键词：家庭教养方式情绪管理情绪行为疗法

可生物降解聚合物作为固相反硝化碳源的研究进展

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环境化学 2024年第6期43卷 2047-2057页

作者：周鹏刘鹰苏鑫刘佩武吴英海韩蕊大连海洋大学设施渔业教育部重点实验室大连116023 大连海洋大学水产与生命学院大连116023 浙江大学生物系统工程与食品科学学院杭州310058 大连海洋大学海洋与土木工程学院大连116023

碳源是生物反硝化法处理低碳氮比硝酸盐污水的必要物质.传统的水溶性碳源投加量难以控制,易导致出水水质恶化,需要寻找一种释碳稳定、安全高效的替代碳源.可生物降解聚合物(biodegradable polymers,BDPs)是一类人工合成的高分子有机物,... 详细信息

碳源是生物反硝化法处理低碳氮比硝酸盐污水的必要物质.传统的水溶性碳源投加量难以控制,易导致出水水质恶化,需要寻找一种释碳稳定、安全高效的替代碳源.可生物降解聚合物(biodegradable polymers,BDPs)是一类人工合成的高分子有机物,已被证实可作为新型的反硝化缓释碳源.其具有反硝化效率高、安全稳定、操作简单等优点,近年来被广泛报道.归纳总结了BDPs碳源类型及其体系的反硝化性能和影响因素,讨论了BDPs体系脱氮机制及生物膜群落结构与功能,评价了BDPs反硝化脱氮的成本.提出发展成本相对低廉的BDPs复合碳源、阐明运行条件对BDPs反硝化的影响机制、通过优化微生物群落来构建高效BDPs反硝化系统以及加强共存污染物去除等未来重点研究方向,以期为可生物降解聚合物的反硝化脱氮研究和应用提供参考和依据.

关键词：生物脱氮污水处理固态碳源混合碳源硝酸盐

MicroRNA and mRNA profiling of cerebral cortex in a transgenic mouse model of Alzheimer’s disease by RNA sequencing

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Neural Regeneration Research 2021年第10期16卷 2099-2108页

作者： Li Zeng hai-Lun Jiang Ghulam Md Ashraf Zhuo-Rong Li rui liu Organic Chemistry and Function Laboratory Institute of Medicinal BiotechnologyChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina King Fahd Medical Research Center King Abdulaziz UniversityJeddahSaudi Arabia Department of Medical Laboratory Technology Faculty of Applied Medical SciencesKing Abdulaziz UniversityJeddahSaudi Arabia

In a previous study,we found that long non-coding genes in Alzheimer’s disease(AD)are a result of endogenous gene disorders caused by the recruitment of microRNA(miRNA)and mRNA,and that miR-200a-3p and other representative miRNAs can mediate cognitive impairment and thus serve as new biomarkers for *** this study,we investigated the abnormal expression of miRNA and mRNA and the pathogenesis of AD at the epigenetic *** this aim,we performed RNA sequencing and an integrative analysis of the cerebral cortex of the widely used amyloid precursor protein and presenilin-1 double transgenic mouse model of ***,129 mRNAs and 68 miRNAs were aberrantly *** these,eight down-regulated miRNAs and seven up-regulated miRNAs appeared as promising noninvasive biomarkers and therapeutic *** main enriched signaling pathways involved mitogen-activated kinase protein,phosphatidylinositol 3-kinase-protein kinase B,mechanistic target of rapamycin kinase,forkhead box O,and *** miRNA-mRNA network between dysregulated miRNAs and corresponding target genes connected with AD progression was also *** miRNAs and mRNAs are potential biomarkers and therapeutic targets for new treatment strategies,early diagnosis,and prevention of *** present results provide a novel perspective on the role of miRNAs and mRNAs in *** study was approved by the Experimental Animal Care and Use Committee of Institute of Medicinal Biotechnology of Beijing,China(approval ***-201909-D6)on September 6,2019.

关键词： 3ʹ-untranslated region Alzheimer’s disease biomarker cerebral cortex Gene Ontology high-throughput sequencing intracellular neurofibrillary tangles microtubule-associated protein-τ miRNA-mRNA network presenilin 1

Difference in microstructural characteristics of stamp-charged coke and gravity-charged coke with approximate macroscopic performance

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Journal of Iron and Steel Research International 2024年第5期31卷 1050-1062页

作者： Chong Zou Zheng-yan Huang Jian-yun Li Bin Li Shi-wei liu Yuan She School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an710311ShaanxiChina Technical Center of Shandong Iron and Steel Co. Ltd.(Laiwu Branch)Jinan271104ShandongChina

The microstructural characteristics including optical texture,porosity and pore structure and chemical structure of stamp-charged coke(SCC)and gravity-charged coke(GCC)with similar conventional macro-indicators were investigated,and the properties including micro-strength,reactivity of coke matrix and that after alkali enrichment were comparatively studied by various characterization *** anisotropic structure of SCC is composed of high content of fine mosaic texture,while the content of medium mosaic texture,coarse texture and fibrous texture is *** statistical average shows that the fine mosaic average of SCC(24.89%)is 3.78 times the GCC average(6.58%),and the coarse mosaic average(1.24%)is only about 1/3 of the GCC average(3.43%).The porosity of SCC is lower than that of GCC,but tamping process does not lead to the fact that the number of closed pores of SCC is significantly lower than that of *** the structure of SCC is compact,its pore number is large and the pore wall is *** of coke with diameter less than 150 nm seem unaffected by tamping *** aromatic structure of SCC was less ordered than that of GCC,which was speculated to be related to the addition of more low metamorphic coal in *** microscopic strength and structural strength of SCC are lower than those of *** reactivity of coke matrix is affected by the specific surface area,but it is not the determining factor of its *** improvement in dissolution reactivity of coke after potassium enrichment is independent of coke type.

关键词： Stamp-charged coke Optical texture Porosity Microstructure Reactivity

The dynamic catalysis of Ga/ZSM-5 catalysts for propane-CO2 coupling conversion to aromatics and syngas

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Journal of Energy Chemistry 2024年第10期97卷 513-519页

作者： Yonggui Song Zhong-Pan Hu Haohao Feng Enze Chen Le Lv Yimo Wu Zhen liu Yong Jiang Xiaozhi Su Feifei Xu Mingchang Zhu Jingfeng Han Yingxu Wei Svetlana Mintova Zhongmin liu The Key Laboratory of the Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry Shenyang University of Chemical Technology National Engineering Research Center of Lower-Carbon Catalysis Technology Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Shanghai Advanced Research Institute Chinese Academy of Sciences Normandie University Laboratory of Catalysis and Spectrochemistry (LCS) ENSICAENUNICAEN CNRS

Alkane coupling with CO2by metal-containing zeolites catalysis is found to be a promising way to produce aromatics and syngas in recent years,but the real active sites and the role of CO2are still unclear owing to the quick evolution of the metallic active sites and the complex reaction processes including direct propane aromatization,CO2hydrogenation,reverse water-gas shift reaction,and propane-CO2coupling ***,Ga/ZSM-5 catalysts were constructed to study the dynamic evolution of the metallic active sites and the role of CO2during the propane and CO2coupling *** optimizing the reaction conditions,a notable propane conversion rate of 97.9% and an impressive aromatics selectivity of 80.6% in hydrocarbons can be achieved at the conditions of 550℃ and CO2/C3H8of 4.13CO2isotope experiments illustrate that C-atoms of CO2can enter into CO（86.5%） and aromatics（10.8%）during the propane-CO2coupling reaction *** situ XANES and FTIR spectroscopies at 550℃and H2/C3H8atmosphere reveal that GaOxspecies can be gradually dispersed into [GaH2]+/[GaH]2+on the Bronsted acid sites of ZSM-5 zeolite during H2and/or C3H8treatment,which are the real active sites for propane-CO2coupling *** situ CO2-FTIR experiments demonstrate that the [GaH2]+/[GaH]2+species can react with CO2and accelerate the propane and CO2coupling *** work not only presents a cost-effective avenue for CO2utilization,but also contributes to the active site design for improved alkane and CO2activation in coupling reaction system.

关键词： Carbon dioxide Ga/ZSM-5 Gallium hydride Propane aromatization Spectroscopy

Application of UiO-66 and its composites for remediation and resource recovery of typical environmental contaminants:a review

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Rare Metals 2024年第6期43卷 2498-2526页

作者： Hui-Min Zhang Yun-Long Wang Xin-Feng Zhu Zhen-Zhen Huang Dan-Dan Pang Kai Wang Chao-hai Wang Zhong-Xian Song Shi-Qiang Yin Lin-Lin Chang Jin-Hui Zhang School Infirmary Henan University of Urban ConstructionPingdingshan 467036China Faculty of Environmental and Municipal Engineering Henan Key Laboratory of Water Pollution Control and Rehabilitation TechnologyKey Laboratory of Carbon Emission Reduction and Combined Air Pollution Control TechnologyHenan University of Urban ConstructionPingdingshan 467036China School of Resources&Environment Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic RegionHenan Polytechnic UniversityJiaozuo 454003China The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationGuangzhou Higher Education Mega CentreSouth China University of TechnologyGuangzhou 510006China

UiO-66 series metal-organic framework materials(MOFs)are typical porous materials assembled by Zr^(4+) with a large mass-to-nucleus ratio and terephthalic acid ligands,which form tetrahedral and octahedral cages arranged in a periodic triangular window *** to the strong interaction between Zr and O,UiO-66 series MOFs exhibit high thermal stability,structural stability,and chemical *** article mainly reviews the applications of UiO-66 and its composites in adsorption,photocatalysis,and resource utilization,while exploring the harm of pollutants to human health and the *** the first part,the differences in adsorption and removal mechanisms of liquid organic pollutants,heavy metals,and volatile organic compounds(VOCs)are *** results show that organic pollutants are mainly removed by physical adsorption,electrostatic interactions,hydrogen bonding,andπ-πinteractions,while heavy metals are mainly removed by chemical adsorption,electrostatic interactions,reduction,and *** are mainly removed by the pore volume and pore size structure of the *** catalysis can achieve non-toxic treatment of pollutants,and this study mainly focuses on UiO-based composite materials constructed by strategies such as semiconductor composites,ion doping,and metal/dye *** the second part,the synergistic effect between the components of UiO-based composite materials promotes the oriented and rapid separation and transfer of earriers at the material interface,thereby promoting the generation of active species such as h^(+),·O_(2)^(-) and·OH,and achieving rapid degradation of pollutants and detoxification of heavy *** the third part,heterojunctions can realize the resource utilization of pollutants in water and air,producing energy-type substances such as hydrogen and methanol while solving environmental *** addition,this article also summarizes the harm of common typical pollutants to the environment

关键词： UiO Adsorption Photocatalysis Environmental pollution Resource recovery