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柴北缘西段晚新生代构造地貌演化:中更新世构造隆升分隔柴达木盆地与苏干湖盆地

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北京大学学报（自然科学版） 2024年第5期60卷 851-864页

作者：杨屹洲衣可心李佳明郭召杰造山带与地壳演化教育部重点实验室北京大学地球与空间科学学院北京100871

通过对野外观察点沉积特征和构造地貌的分析,发现中更新世柴达木盆地和苏干湖盆地的古地理环境发生快速的变化。柴达木盆地和苏干湖盆地早更新世(2.54~0.78 Ma)发育广泛的湖泊,古水流的流向显示此时二者存在水系沟通。中更新世以来(0.78... 详细信息

通过对野外观察点沉积特征和构造地貌的分析,发现中更新世柴达木盆地和苏干湖盆地的古地理环境发生快速的变化。柴达木盆地和苏干湖盆地早更新世(2.54~0.78 Ma)发育广泛的湖泊,古水流的流向显示此时二者存在水系沟通。中更新世以来(0.78 Ma至今),软沉积变形构造指示的柴北缘构造带持续构造活动事件导致小赛什腾山逐渐隆升,成为完全分隔柴达木盆地与苏干湖盆地的地形屏障,原有的湖泊环境在山前地区转变为冲积扇-洪积扇及辫状河环境,在远端地区转变为孤立的小型咸水湖环境。因此,柴北缘构造带中更新世的构造隆升事件导致柴达木盆地和苏干湖盆地古地理环境和流域体系的剧烈变迁。隆升形成的柴北缘构造带阻断发源自南祁连地区的河流,最终减少柴达木盆地的入湖径流量,促进中更新世以来柴达木盆地内湖泊的萎缩和干涸。

关键词：柴达木盆地苏干湖盆地中更新世构造隆升沉积环境古地理演化

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异噻唑啉酮及其衍生物的合成及生物活性综述

应用化工 2024年第7期53卷 1658-1662,1667页

作者：李琦杨一洲闫合西北农林科技大学植物保护学院陕西杨凌712100 西北农林科技大学陕西省生物农药工程技术研究中心陕西杨凌712100

综述了有关异噻唑啉酮类化合物母核的合成方法、各个位点的修饰改造方法以及在工农医等领域的应用进展。该类化合物生物活性广泛,具有高效、低毒、广谱等优点,应用于杀菌、灭藻、防腐、防污等,是近年化工研究领域的热点,目前已有卡松(Ka... 详细信息

综述了有关异噻唑啉酮类化合物母核的合成方法、各个位点的修饰改造方法以及在工农医等领域的应用进展。该类化合物生物活性广泛,具有高效、低毒、广谱等优点,应用于杀菌、灭藻、防腐、防污等,是近年化工研究领域的热点,目前已有卡松(Kathon)和Sea-Nine 211(DCOIT)等商品化产品。异噻唑啉酮类化合物对工农业生产生活具有重要作用。重点讨论了近年来异噻唑啉酮及其衍生物在医药、农药、涂料、纺织、造纸、制革等领域的应用以及研究进展,最后对异噻唑啉酮类化合物的发展方向和应用前景做出展望。

关键词：异噻唑啉酮合成衍生物生物活性

中国学者论文被引频次与基金项目资助关系探究

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科技管理研究 2024年第15期44卷 221-226页

作者：经渊杨一舟浙江理工大学浙江杭州310018

为探究论文被引频次与基金资助之间的关系,选取中国学者2017年发表在中国科学引文数据库(CSCD)和科学引文索引扩展版(SCI-E)数据库收录期刊的论文,分析了不同基金项目资助条件下论文被引频次的幂律分布规律。基金论文的被引频次整体上... 详细信息

为探究论文被引频次与基金资助之间的关系,选取中国学者2017年发表在中国科学引文数据库(CSCD)和科学引文索引扩展版(SCI-E)数据库收录期刊的论文,分析了不同基金项目资助条件下论文被引频次的幂律分布规律。基金论文的被引频次整体上高于非基金论文,但具体提升程度与研究方向有关。对学者而言没有必要在一篇论文后挂多个基金项目,对期刊而言不需要过度追求基金论文比,这两个指标与被引频次之间均未呈现出正相关性。应客观看待基金项目的作用,加强期刊评价研究,全面评价论文、期刊的质量和影响力,规范基金项目标注,合理利用基金论文比指标,坚守科技期刊办刊本心。受模型和数据限制,零被引的长尾论文及人文学科论文的基金项目资助作用规律尚未得到有效揭示。

关键词：基金项目科技期刊基金论文比被引频次 CSCD SCI-E 幂律

Recent advances on “ordered water monolayer that does not completely wet water” at room temperature

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Science China(Physics,Mechanics & Astronomy) 2014年第5期57卷 802-809页

作者： WANG ChunLei yang yizhou FANG HaiPing Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied PhysicsChinese Academy of Sciences University of Chinese Academy of Sciences

The molecular scales behavior of interracial water at the solid/liquid interfaces is of a fundamental significance in a diverse set of technical and scientific contexts, ranging from the efficiency of oil mining to the activity of biological molecules. Recently, it has become recognized that, both the physical interactions and the surface morphology have significant impact on the behavior of inter- facial water, including the water structures as well as the wetting properties of the surface. In this review, we summarize some of recent advances in the atom-level pictures of the interfacial water, which exhibits the ordered character on various solid surfaces at room or cryogenic temperature. Special focus has been devoted to the wetting phenomenon of ＂ordered water monolayer that does not completely wet water＂ and the underlying mechanism on model and some real solid surfaces at room temperature. The possible applications of this phenomenon are also discussed.

关键词： ordered water monolayer hydrophobicity/hydrophilicity molecular dynamics simulation hydrogen bond room temperature

基于云原生的地理空间知识库管理关键技术与服务方法研究

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地球信息科学学报 2024年第9期26卷 2013-2025页

作者：仲腾张雪英许沛曹敏陈碧宇刘启亮王曙杨宜舟南京师范大学虚拟地理环境教育部重点实验室南京210023 江苏省地理信息资源开发与利用协同创新中心南京210023 武汉大学测绘遥感信息工程国家重点实验室武汉430079 中南大学地理信息系长沙410083 中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室北京100101 北京吉威空间信息股份有限公司北京100043

地理空间知识的本质在于揭示地理事物和现象的时空分布、时空变化过程及其相互作用规律。地理空间知识库管理系统(GeoKGMS)以“图-文-数”一体化的地理空间知识库引擎为核心,致力于支撑地理空间知识资源的高效汇聚、地理空间知识图谱的... 详细信息

地理空间知识的本质在于揭示地理事物和现象的时空分布、时空变化过程及其相互作用规律。地理空间知识库管理系统(GeoKGMS)以“图-文-数”一体化的地理空间知识库引擎为核心,致力于支撑地理空间知识资源的高效汇聚、地理空间知识图谱的自动构建和一站式地理空间知识工程建设,旨在形成新一代地理信息系统(GIS)的重要基础平台。本文重点阐述了基于云原生的地理空间知识库管理关键技术,包括云原生的地理空间知识库微服务统一调度技术、人机协同的地理空间知识图谱构建技术、地理空间知识图谱时空混合编码技术、以及多模态地理空间知识存储技术。在此基础上,设计了GeoKGMS的服务框架,实现了地理空间知识库管理、多模态地理空间知识抽取、地理空间知识图谱人机协同构建、地理空间知识推理、地理空间知识图谱质量评估和地理空间知识可视化六大管理服务功能。以喀斯特地貌知识图谱为例,充分发挥机器挖掘和专家知识的优势,实现了可持续的地理空间知识图谱工程化协同共建。

关键词：云原生地理空间知识知识库管理人机协同知识图谱构建知识推理知识检索知识存储知识质量评估

Distributed Robust Optimal Dispatch of Regional Integrated Energy Systems Based on ADMM Algorithm with Adaptive Step Size

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Journal of Modern Power Systems and Clean Energy 2024年第3期12卷 852-862页

作者： Zhoujun Ma yizhou Zhou Yuping Zheng Li yang Zhinong Wei the College of Energy and Electrical Engineering Hohai UniversityNanjing 211100China State Grid Jiangsu Electric Power Co. Ltd.Nanjing 210019China State Key Laboratory ofSmart Grid Protection and Control NARI Group CorporationNanjing 211106China

This paper proposes a distributed robust optimal dispatch model to enhance information security and interaction among the operators in the regional integrated energy system(RIES).Our model regards the distribution network and each energy hub(EH)as independent operators and employs robust optimization to improve operational security caused by wind and photovoltaic(PV)power output uncertainties,with only deterministic information exchanged across *** paper also adopts the alternating direction method of multipliers(ADMM)algorithm to facilitate secure information interaction among multiple RIES operators,maximizing the benefit for each ***,the traditional ADMM algorithm with fixed step size is modified to be adaptive,addressing issues of redundant interactions caused by suboptimal initial step size settings.A case study validates the effectiveness of the proposed model,demonstrating the superiority of the ADMM algorithm with adaptive step size and the economic benefits of the distributed robust optimal dispatch model over the distributed stochastic optimal dispatch model.

关键词： Regional integrated energy system(RIES) distributed optimization robust optimization operation security energy hub(EH)

Design of low-frequency circular metastructure isolators with high-load-bearing capacity

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Chinese Journal of Aeronautics 2024年第10期37卷 207-220页

作者： Ning CHEN Zhichun yang Te yang yizhou SHEN Wei TIAN Yanlong XU School of Aeronautics Northwestern Polytechnical UniversityXi’an 710072China National Key Laboratory of Strength and Structural Integrity Xi’an 710065China State Key Laboratory for Strength and Vibration of Mechanical Structures Xi’an 710049China

Traditional vibration isolation structures cannot work effectively for low-frequency vibration under heavy loads,due to the inherent contradiction between the high-static and lowdynamic stiffness of these *** the challenge can be effectively addressed by introducing a negative stiffness mechanism,the existing structures inevitably have complex ***,a class of man-made structures with both extraordinary mechanical properties and simple configurations,provide a new insight for low-frequency vibration isolation *** this paper,circular metastructure isolators consisting of some simple beams are designed for low-frequency vibration,including a single-layer isolator and a double-layer isolator,and their static and dynamic characteristics are studied,*** the static characteristic,the force–displacement and stiffness–displacement curves are obtained by finite element simulation;for the dynamic characteristic,the vibration transmissibility curves are obtained analytically and *** result shows that the circular nonlinear single-layer isolator has excellent lowfrequency isolation performance,and the isolation frequency band will decrease about 20 Hz when the isolated mass is fixed at 1.535 kg,compared with a similar circular linear *** static and dynamic properties are well verified through *** work provides an innovative approach for the low-frequency vibration isolation and has wide potential applications in aeronautics.

关键词： Isolator Low-frequency Curved beam Metastructure Stiffness

New Insight of Fe Valence State Change Using Leaves:A Combined Experimental and Theoretical Study

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Chinese Physics Letters 2022年第10期39卷 55-59页

作者： Zejun Zhang yizhou yang Jie Jiang Liang Chen Shanshan Liang Haiping Fang Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China School of Physics East China University of Science and TechnologyShanghai 200237China School of Physical Science and Technology Ningbo UniversityNingbo 315211China Department of Optical Engineering Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry BiomassZhejiang A&F UniversityHangzhou 311300China

Fe^(2+)is of considerable importance in plant growth and crop ***,most Fe elements in nature favor existing in the trivalent state,which often causes the deficiency of Fe^(2+)in ***,we report the Fe valence state change from Fe^(3+)to Fe^(2+)by using *** valence state change was confirmed by x-ray photoelectron spectroscopy in Fe-Cl@*** transform infrared and ultraviolet-visible spectroscopy demonstrated that aromatic ring groups were included in leaves,and cation-π𝜋interactions between Fe cations and the components containing aromatic rings in leaves were ***,density functional theory calculations revealed that the most stable adsorption site for hydrated Fe^(3+)cation was the region where hydroxyl groups and aromatic rings ***,molecular orbital and charge decomposition analysis revealed that the aromatic rings took the major part(59%)of the whole net charge transfer between leaves and Fe *** work provides a high-efficiency and eco-friendly way to transform the Fe valence state from Fe^(3+)to Fe^(2+),and affords a new insight into the valance change between plant organisms with cations.

关键词： aromatic rings valence

Mesenchymal stem cell-derived exosomes: Versatile nanomaterials for skin wound treatment

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Nano Research 2024年第4期17卷 2836-2856页

作者： Yuzhen Xiao Hexi Li Junhui Zhang Songyun yang Chunsen Zhang yizhou Huang Xin Tang Huiqi Xie Department of Orthopedic Surgery and Orthopedic Research Institute Laboratory of Stem Cell and Tissue EngineeringState Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengdu 610041China West China School of Basic Medical Sciences and Forensic Medicine Sichuan UniversityChengdu 610041China West China School of Public Health and West China Fourth Hospital Sichuan UniversityChengdu 610041China Sports Medicine Center West China HospitalSichuan UniversityChengdu 610041China

Accumulating studies reveal that mesenchymal stem cells(MSCs)promote skin wound healing mainly through the paracrine ***,one of the crucial paracrine mediators in wound healing,are cell-derived nanosized membranous vesicles containing diverse bioactive *** the potent ability of modulating skin cell behaviors,MSC-derived exosomes(MSC-Exos)are regarded as a promising nanomaterial for regenerative wound *** hostile conditions,MSC-Exos are efficient in protecting skin cells from severe damage and restoring their *** to recent studies,MSC-Exos possess remarkable pro-healing effects in a variety of skin wounds,typically resulting in increased wound closure,inhibited scar tissue formation,and better restoration of skin *** further enhance the therapeutic potential of MSC-Exos,the development of applicable pretreatment strategies and the optimization of exosome delivery are under intensive ***,we summarize current research progress of MSC-Exos for skin wound treatment,with an emphasis on the biological effects of these nanovesicles,the repair mechanisms,and future challenges in clinical translation.

关键词： exosomes mesenchymal stem cells diabetic wounds burn wounds scar wound healing