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Transportation Safety and Environment 2024年第3期6卷 133-139页

作者： sixuan Qiu ningzhou Li Xiaojuan Wei Gaosong Li School of Railway Transportation Shanghai Institute of TechnologyShanghai 201418China

As the latest research direction of train-to-train communication,virtual coupling train formation technology has attracted the attention of many *** paper studies the influence of time delay on the formation of virtual coupled *** proposed a distributed pID controller,which means that trains can still form a stable fleet operation under the influence of communication delay and control *** modelling and analysis,the research uses Matlab to conduct simulation,involving two sets of *** including speed,acceleration,position,position error,expected distance between adjacent trains and actual distance between adjacent trains are *** results demonstrate that the distributed pID controller can effectively control the impact of time delay on the virtual coupling fleet.

关键词： virtual coupling train-to-train communication time delay pID controller

Controllable Exciton Diffusion Length and Ultrafast Charge Generation in Ternary Organic Solar Cells

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Chinese Journal of Chemistry 2024年第11期42卷 1275-1283页

作者： sixuan Cheng Jiawei Qiao p.ng Lu Wei Qin Xiaotao Hao School of physics State Key Laboratory of Crystal MaterialsShandong UniversityJinanShandong250100 China School of physics National Demonstration Center for Experimental Physics EducationShandong UniversityJinanShandong250100 China ARC Centre of Excellence in Exciton Science School of ChemistryThe University of MelbourneParkvilleVictoria3010 Australia

Charge generation,a critical process in the operation of organic solar cell(OSC),requires thorough investigation in an ultrafast *** work demonstrates that the utilization of alloy model for the non-fullerene acceptor(nFA)comp.nent can regulate the crystallization properties of active layer films,which in turn affects exciton diffusion and hole transfer(HT),ultimately influencing the charge generation *** incorporating BTp-eC7 as a third comp.nent,without exp.nding absorption range or changing molecular energy levels but regulating the ultrafast exciton diffusion and HT processes,the power conversion efficiency(pCE)of the optimized pM6:BTp-eC9:BTp-eC7 based ternary OSC is improved from 17.30%to 17.83%,primarily due to the enhancement of short-circuit current density(JSC).Additionally,the introduction of BTp-eC7 also reduces the trap state density in the photoactive layer which helps to reduce the loss of *** study introduces a novel approach for employing ternary alloy models by incorporating dual acceptors with similar structures,and elucidates the underlying mechanism of charge generation and JSC in ternary OSCs.

关键词： Organic photovoltaics Ternary strategy Exciton diffusion Hole transfer Trap state Kinetics Alloys photophysics

Automated and miniaturized screening of antibiotic combinations via robotic-printed combinatorial droplet platform

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Acta pharmaceutica Sinica B 2024年第4期14卷 1801-1813页

作者： Fangchi Shao Hui Li Kuangwen Hsieh p.ngfei Zhang sixuan Li Tza-Huei Wang Department of Biomedical Engineering Johns Hopkins UniversityBaltimoreMD 21218USA Department of Mechanical Engineering Johns Hopkins UniversityBaltimoreMD 21218USA

Antimicrobial resistance(AMR)has become a global health crisis in need of novel *** this end,antibiotic combination therapies,which combine multiple antibiotics for treatment,have at-tracted significant attention as a potential approach for combating *** facilitate advances in anti-biotic combination therapies,most notably in investigating antibiotic interactions and identifying synergistic antibiotic combinations however,there remains a need for automated high-throughput plat-forms that can create and examine antibiotic combinations on-demand,at scale,and with minimal reagent *** address these challenges,we have developed a Robotic-printed Combinatorial Droplet(RoboDrop)platform by integrating a programmable droplet microfuidic device that generates antibiotic combinations in nanoliter droplets in automation,a robotic arm that arranges the droplets in an array,and a camera that images the array of thousands of droplets in *** further implement a resazurin-based bacterial viability assay to accelerate our antibiotic combination *** a demonstration,we use RoboDrop to corroborate two pairs of antibiotics with known interactions and subsequently identify a new synergistic combination of cefsulodin,p.nicillin,and oxacillin against a model *** *** therefore envision RoboDrop becoming a useful tool to efficiently identify new synergistic antibiotic combinations toward combating AMR.

关键词： Droplet microfluidics Antimicrobial resistance Antibiotic combinatorial screening Contact printing Robotics pharmaceutical analysis High-throughput Antibiotic interactions

Multivariate statistical and bioinformatic analyses for the seasonal variations of actinobacterial community structures in a drinking water reservoir

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Journal of Environmental Sciences 2024年第3期137卷 1-17页

作者： Haihan Zhang sixuan p.n BenMa Tinglin Huang Dmitry B.Kosolapov Manli Ma Xiang Liu Huan Liu Xiaoyan Liu Shaanxi Key Laboratory of Environmental Engineering Key Laboratory of Northwest Water ResourceEnvironment and EcologyMOEXi’an University of Architecture and TechnologyXi’an 710055China School of Environmental and Municipal Engineering Xi’an University of Architecture and TechnologyXi’an 710055China pap.nin Institute for Biology of Inland Waters of Russian Academy of Sciences(IBIW RAS) 109BorokNekouzYaroslavl152742Russia

Actinobacterial community is a conspicuous part of aquatic ecosystems and displays an important role in the case of biogeochemical cycle,but little is known about the seasonal variation of actinobacterial community in reservoir ecological *** this study,the high-throughput techniques were used to investigate the structure of the aquatic actinobacterial community and its inducing water quality parameters in different *** results showed that the highest diversity and abundance of actinobacterial community occurred in winter,with Sporichthya(45.42%)being the most abundant genus and Rhodococcus sp.(29.32%)being the most abundant *** analysis and correlation analysis suggested that in autumn the dynamics of actinobacterial community were infuenced by more factors and nocardioides ***2R5S2 was the potential keystone species which was negatively correlated with temperature(R=-0.72,pnges in environmental factors could significantly affect the changes in actinobacterial community,and the dynamics of temperature,dissolved oxygen(DO),and turbidity are potential conspicuous factors infuencing seasonal actinobacterial community *** partial least squares path modeling further elucidated that the combined effects of DO and temperature not only in the diversity of actinobacterial community but also in other water qualities,while the physiochemical parameters(path coefficient=1.571,png environmental factors in natural mixture *** results strengthen our understanding of the dynamics and structures of actinobacterial community in the drinking water reservoirs and provide scientific guidance for further water quality management and protection in water sources.

关键词： Source water reservoir High-throughput sequencing Correlation analysis network analysis partial least squares path modeling

Cratonic Strike-Slip Faults in the Southwest Ordos Basin(Central China)， and Their Influence on Hydrocarbon Accumulation

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Journal of Earth Science 2024年

作者： Zhao Wang Lei Huang Chiyang Liu Faqi He Huichong Jia Fubin Wang p.ng Yang Fei Yang Xiaowei Li sixuan Wu State Key Laboratory of Continental Dynamics， northwest University Institute of Oil and Gas Basin， northwest University Xi'an Sinopec north China Oil and Gas Branch Geology and Geophysics program， Missouri University of Science and Technology Exploration and Development Research Institute， petroChina Southwest Oil & Gasfield Comp.ny

Cratonic strike-slip fault， despite its potentially significant influence on hydrocarbon accumulation， has attracted limited attention. This study investigates the geometry and kinematics of the cratonic strike-slip faults newly identified within the southwest Ordos Basin， Central China， based on 3D seismic reflection data. We recognized three dominant sets of faults with strike-slip.nature trending respectively in nW， EnE， and n–S directions in the study area. These faults exhibit a stratified style characterized by distinct trends across various strata， with EnE-trending faults in the Mesozoic strata (Area A)， n-S-trending faults in the paleozoic strata， and vertically discontinuous structures in the Mesozoic and paleozoic strata (nW-trending Yudu fault zone and EnE-trending Yulinzi and Zaosheng fault zones). The contrasting kinematics of strike-slip faults observed in deep and shallow layers further confirm such fault stratification， suggesting isolated fault evolution within respective layers. The quantified fault parameters obtained from seismic reflection data， including length， width and displacement， suggest that these cratonic strike-slip faults in the Ordos Basin are immature. Comparisons with strike-slip faults in other cratonic basins and active tectonic settings suggest that the strike-slip faults within the Ordos Basin are representative of cratonic strike-slip faults， characterized by low maturity and a stratified faulting style， and they have special propagation mechanism (preferentially occurring in the shallow strata of the interior of the basin). Moreover， these fault characteristics have dual impacts on petroleum accumulation in the southwest Ordos Basin. The low faulty maturity makes the fault zone a special hydrocarbon reservoir (fault-fracture volume) in tight sandstone， while the stratified faulting style vertically separates the Mesozoic and paleozoic petroleum systems in the southwest Ordos Basin. Our findings therefore contribute significa

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语言政策民族志本土化路径探究

云南师范大学学报（哲学社会科学版） 2024年第1期56卷 38-45页

作者：郑咏滟王思璇复旦大学外国语言文学学院上海200433

随着语言政策与规划研究的实证转向,语言政策民族志所包含的本体论、认识论和方法论越来越得到国际语言规划与政策研究的重视。然而,这一研究范式尚未在我国得到充分关注。文章厘清语言政策民族志的内涵、方法及应用,阐述语言政策民族... 详细信息

随着语言政策与规划研究的实证转向,语言政策民族志所包含的本体论、认识论和方法论越来越得到国际语言规划与政策研究的重视。然而,这一研究范式尚未在我国得到充分关注。文章厘清语言政策民族志的内涵、方法及应用,阐述语言政策民族志对语言规划学科的重要意义,并提出语言政策民族志本土化的3点建议:一是培养本土文化意识,将研究置于地方历史文化中进行阐释;二是积极探索替代性认识论、方法论和其他会话资源;三是坚持中国立场,保持批判性反思,以期为探究适用于中国特色的语言规划理论提供借鉴和参考。

关键词：语言政策民族志语言政策与规划本土化质性转向中国立场

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丰收的嘉奖:财政激励与粮食增产

中国农村经济 2024年第8期 27-46页

作者：罗斯炫张俊飚湖南农业大学经济学院华中农业大学农业绿色低碳发展实验室浙江农林大学浙江省乡村振兴研究院浙江农林大学经济管理学院

常规产粮大县奖励政策是中央政府为了调动地方政府粮食生产积极性、缓解产粮大县财政困难的重要举措,但其粮食增产效果及作用机制尚未明晰。本文基于群聚分析法,利用奖励入围条件所形成的制度断层点,估计了该政策实施对粮食生产的影响... 详细信息

常规产粮大县奖励政策是中央政府为了调动地方政府粮食生产积极性、缓解产粮大县财政困难的重要举措,但其粮食增产效果及作用机制尚未明晰。本文基于群聚分析法,利用奖励入围条件所形成的制度断层点,估计了该政策实施对粮食生产的影响。结果表明:2005-2020年,该政策实施产生了明显的群聚现象,即县域粮食产量频数分布在奖励入围断点20万吨处呈现左侧缺失与右侧群聚。该政策实施促使操纵区间内县域粮食单产平均提高5.0%,且提高了复种指数与农业机械化水平。财政收支缺口大、产业结构高级化程度低的县和贫困县受财政激励更强,表现出更高的粮食增产成效。进一步,该政策还提高了县级层面的农业全要素生产率和农业劳动生产率。经计算,该政策实施的预计收益下限值远大于其预计成本上限值,具有较高的经济效益。本文研究有助于认识县级政府对粮食生产财政转移支付的反应程度、财政激励的作用区间以及财政转移支付对粮食安全的贡献,为中央政府进一步优化和创新粮食生产财政转移支付制度,充分发挥财政助力粮食安全重要职能提供来自微观层面的经验证据。

关键词：常规产粮大县奖励政策财政激励财政转移支付粮食安全群聚分析

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黔西小屯井田煤层气多层合采产层组合优化

煤矿安全 2024年第1期55卷 93-99页

作者：叶嗣暄曾正端中煤科工西安研究院(集团)有限公司陕西西安710077 贵州大方煤业有限公司小屯煤矿贵州毕节551600

贵州小屯井田龙潭组煤系具有煤层数量多、煤层间距小、煤层厚度薄等特点,煤层气开发需以多层合采为主要方式;与单一厚层状煤层相比,多煤层合采易发生层间干扰,影响合采效果及资源动用程度。基于小屯井田钻孔岩性与含气性分析,识别出有... 详细信息

贵州小屯井田龙潭组煤系具有煤层数量多、煤层间距小、煤层厚度薄等特点,煤层气开发需以多层合采为主要方式;与单一厚层状煤层相比,多煤层合采易发生层间干扰,影响合采效果及资源动用程度。基于小屯井田钻孔岩性与含气性分析,识别出有利、较有利与不利3种煤岩层组合类型,考查各煤层厚度、埋深、含气量等特征,对比各煤层的煤层气资源条件,综合考虑储盖组合、含气性、渗透性、储层压力、地应力等因素,划分出Ⅰ(6上煤+6中煤+6下煤)、Ⅱ(7煤)、Ⅲ(33煤+34煤)共3套叠置煤层气系统;在此基础上,优化合采产层组合,并确定有序开发模式为优先开发上部产层组合(6上煤+6中煤+6下煤),其次为下部组合(33煤+34煤),最后考虑经济与时间成本确定是否单独开发7煤;确立了资源条件分析-含气系统划分-产层组合优化的多-薄煤层发育区煤层气合采层位优选思路。

关键词：叠置煤层气系统多煤层合采解吸压力产层组合储层物性

大前庭水管综合征前庭功能及康复相关研究进展

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临床耳鼻咽喉头颈外科杂志 2024年第7期38卷 656-660,665页

作者：李思璇郭玉芬徐百成兰州大学第二医院耳鼻咽喉头颈外科兰州730030

大前庭水管综合征(large vestibular aqueduct syndrome,LVAS)是临床常见的常染色体隐性遗传性听力损失疾病,大部分患者可伴发前庭功能障碍。随着人工耳蜗植入(cochlear implant,CI)的广泛应用和前庭医学的发展,LVAS的病理、生理机制及C... 详细信息

大前庭水管综合征(large vestibular aqueduct syndrome,LVAS)是临床常见的常染色体隐性遗传性听力损失疾病,大部分患者可伴发前庭功能障碍。随着人工耳蜗植入(cochlear implant,CI)的广泛应用和前庭医学的发展,LVAS的病理、生理机制及CI对于前庭功能的影响得到了广泛关注,针对LVAS的前庭功能以及CI术后的前庭功能康复逐步成为研究热点,本文就LVAS患者的前庭功能及其相关康复研究做一综述。

关键词：大前庭水管综合征人工耳蜗植入前庭功能前庭康复听力损失

基于高斯混合模型的物流非高斯随机振动损伤分析

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振动与冲击 2024年第12期43卷 203-211页

作者：郭涛葛长风夏斯璇殷诚林康钱静江南大学机械工程学院江苏无锡214122 罗切斯特理工学院包装科学系美国纽约14623 江苏省食品先进制造装备技术重点实验室江苏无锡214122

针对公路运输环境中的振动信号具有明显的非高斯性,提出一种非高斯随机振动疲劳损伤分析方法。为了描述振动信号的幅值概率密度分布,采用移动加速度均方根来代表该段信号的振动强度,并引入高斯混合模型对加速度均方根值进行描述。在此... 详细信息

针对公路运输环境中的振动信号具有明显的非高斯性,提出一种非高斯随机振动疲劳损伤分析方法。为了描述振动信号的幅值概率密度分布,采用移动加速度均方根来代表该段信号的振动强度,并引入高斯混合模型对加速度均方根值进行描述。在此基础上结合Tovo-Benasciutti方法和Dirlik方法推导出非高斯宽带频域疲劳损伤计算方法。最后,以雨流计数法作为参考,对不同峭度的实测振动信号进行疲劳损伤分析,结果表明,与传统频域疲劳损伤计算方法相比较,提出的非高斯疲劳损伤方法具有更高的计算精度。该研究对于运输包装件的随机振动加速试验设计有实际意义。

关键词：非高斯随机振动高斯混合模型概率密度函数运输包装