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Arsenic mobilization from soils in the presence of herbicides

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Journal of Environmental Sciences 2019年第11期31卷 66-73页

作者： yuxuan jiang Wen Zhong Wei Yan Li Yan Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China University of Chinese Academy of Sciences Beijing 100049 China

Arsenic (As) mobilization in soils is a fundamental step controlling its transport and fate,especially in the presence of the co-existing *** this study,the effect of two commonly used herbicides,glyphosate (PMG) and dicamba,and two competing ions including phosphate and humic acid,on As desorption and release was investigated using batch and column *** batch kinetics results showed that As desorption in the presence of competing factors conformed to the pseudo-second order kinetics at pH range of *** impact of phosphate on desorption was greatest,followed by *** competitive effect of dicamba and humic acid was at the same level with electrolyte *** situ flow cell ATR-FTIR analysis was performed to explore the mechanism of phosphate and PMG impact on As *** results showed that PMG promoted As (Ⅲ) desorption by competiting for available adsorption sites with no change in As(Ⅲ) complexing *** the other hand,phophate changed As(Ⅲ) surface complexes from bidentate to monodentate structures,exhibiting the most siginficant effect on As(Ⅲ) ***(Ⅴ) surface complexes remained unchanged in the presence of PMG and phosphate,implying that the competitive effect for As(Ⅴ) desorption was primarily determined by the available adsorption ***-term (10 days) soil column experiments suggested that the effect of humic acid on As mobilization became pronounced from 3 days (18 PVs).The insights of this study help us understand the transport and fate of As due to herbicides application.

关键词： Arsenic desorption Herbicides Competing ions In situ ATR-FTIR Long-term column transport

Solar manipulations of perpendicular magnetic anisotropy for flexible spintronics

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Frontiers of physics 2024年第4期19卷 73-79页

作者： Zhexi He Yifan Zhao Yujing Du Meng Zhao yuxuan jiang Ming Liu Ziyao Zhou State Key Laboratory for Manufacturing Systems Engineering Electronic Materials Research LaboratoryKey Laboratory of the Ministry of Education&International Center for Dielectric ResearchSchool of Electronic Science and EngineeringThe International Joint Laboratory for Micro/Nano Manufacturing and Measurement TechnologyXi’an Jiaotong UniversityXi’an 710049China School of Materials Science&Engineering Changzhou UniversityChangzhou 213164China

Flexible electronics/spintronics attracts researchers’attention for their application potential abroad in wearable devices,healthcare,and other *** devices’performance(speed,energy consumption)is highly dependent on manipulating information bits(spin-orientation in flexible spintronics).In this work,we established an organic photovoltaic(OPV)/ZnO/Pt/Co/Pt heterostructure on flexible PET substrates with perpendicular magnetic anisotropy(PMA).Under sunlight illumination,the photoelectrons generated from the OPV layer transfer into the PMA heterostructure,then they reduce the PMA strength by enhancing the interfacial Rashba field *** coercive field(Hc)reduces from 800 Oe to 500 Oe at its maximum,and the magnetization can be switched up and down *** stability of sunlight control of magnetization reversal under various bending conditions is also tested for flexible spintronic ***,the voltage output of sunlight-driven PMA is achieved in our prototype device,exhibiting an excellent angular dependence and opening a door towards solar-driven flexible spintronics with much lower energy consumption.

关键词： interfacial magnetoelectric coupling perpendicular magnetic anisotropy deterministic magnetization reversal photovoltaic control of magnetism

Aging-elevated inflammation promotes DNMT3A R878H-driven clonal hematopoiesis

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Acta Pharmaceutica Sinica B 2022年第2期12卷 678-691页

作者： Min Liao Ruiqing Chen Yang Yang Hanqing He Liqian Xu yuxuan jiang Zhenxing Guo Wei He Hong jiang Jianwei Wang School of Pharmaceutical Sciences Tsinghua UniversityBeijing 100084China Kidney Disease Center the First Affiliated HospitalCollege of MedicineZhejiang UniversityHangzhou 310003China Department of Hematology/Oncology First Hospital of Tsinghua UniversityBeijing 100016China

Aging-elevated DNMT3A R882H-driven clonal hematopoiesis(CH)is a risk factor for myeloid malignancies remission and overall *** some studies were conducted to investigate this phenomenon,the exact mechanism is still under *** this study,we observed that DNMT3 A R878 H bone marrow cells(human allele:DNMT3 A R882 H)displayed enhanced reconstitution capacity in aged bone marrow milieu and upon inflammatory ***3 A R878 H protects hematopoietic stem and progenitor cells from the damage induced by chronic inflammation,especially TNFa ***,we identified that RIPK1-RIPK3-MLKL-mediated necroptosis signaling was compromised in R878 H cells in response to proliferation stress and TNFa ***,we elucidated the molecular mechanism driving DNMT3 A R878 H-based clonal hematopoiesis,which raises clinical value for treating DNMT3 A R882 H-driven clonal hematopoiesis and myeloid malignancies with aging.

关键词： Aging Inflammation DNMT3A R882H Clonal hematopoiesis Hematopoietic stem cells Necroptosis TNFα

GOPS:A general optimal control problem solver for autonomous driving and industrial control applications

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Communications in Transportation Research 2023年第1期3卷 92-106页

作者： Wenxuan Wang Yuhang Zhang Jiaxin Gao yuxuan jiang Yujie Yang Zhilong Zheng Wenjun Zou Jie Li Congsheng Zhang Wenhan Cao Genjin Xie Jingliang Duan Shengbo Eben Li School of Vehicle and Mobility Tsinghua UniversityBeijing100084China

Solving optimal control problems serves as the basic demand of industrial control *** methods like model predictive control often suffer from heavy online computational *** learning has shown promise in computer and board games but has yet to be widely adopted in industrial applications due to a lack of accessible,high-accuracy *** Reinforcement learning(RL)solvers are often developed for academic research and require a significant amount of theoretical knowledge and programming ***,many of them only support Python-based environments and limit to model-free *** address this gap,this paper develops General Optimal control Problems Solver(GOPS),an easy-to-use RL solver package that aims to build real-time and high-performance controllers in industrial *** is built with a highly modular structure that retains a flexible framework for secondary *** the diversity of industrial control tasks,GOPS also includes a conversion tool that allows for the use of Matlab/Simulink to support environment construction,controller design,and performance *** handle large-scale problems,GOPS can automatically create various serial and parallel trainers by flexibly combining embedded buffers and *** offers a variety of common approximate functions for policy and value functions,including polynomial,multilayer perceptron,convolutional neural network,***,constrained and robust algorithms for special industrial control systems with state constraints and model uncertainties are also integrated into *** examples,including linear quadratic control,inverted double pendulum,vehicle tracking,humanoid robot,obstacle avoidance,and active suspension control,are tested to verify the performances of GOPS.

关键词： Industrial control Reinforcement learning Approximate dynamic programming Optimal control Neural network Benchmark

Bismuth-doped glass microsphere lasers

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Photonics Research 2017年第6期5卷 252-256页

作者： ZAIJIN FANG SíLE NIC CHORMAIC SHANYU WANG XIN WANG JIBO YU yuxuan jiang JIANRONG QIU PENGFEI WANG Key Laboratory of In-Fiber Integrated Optics Ministry Education of China Harbin Engineering University Light-Matter Interactions Unit Okinawa Institute of Science and Technology Graduate University State Key Laboratory of Modern Optical Instrumentation Zhejiang University Photonics Research Centre Dublin Institute of Technology

In this work, a hybrid structure consisting of a multicomponent germanate glass microsphere containing bismuth as a gain medium is proposed and presented. The bismuth-doped germanate glass microspheres were fabricated from a glass fiber tip with no precipitation of the bismuth metal. Coupling with a fiber taper, the bismuth-doped microsphere single-mode laser was observed to lase at around 1305.8 nm using 808 nm excitation. The low threshold of absorbed pump power at 215 μW makes this microlaser appealing for various applications, including tunable lasers for a range of purposes in telecommunication, biomedical, and optical information processing.

关键词： Bismuth-doped glass microsphere lasers

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改善电厂调频性能的储能策略研究和容量配置

电力自动化设备 2017年第8期37卷 52-59页

作者：陈丽娟姜宇轩汪春东南大学电气工程学院江苏南京210096 中国电力科学研究院北京100192

具有快速充放电特性的储能技术,作为一种新的调频方式已逐步进入多国的辅助服务市场,参与到传统机组的自动发电控制(AGC)中。基于华北地区的辅助服务补偿政策,提出了改善电厂调频性能的储能充放电策略和容量配置方法。首先,根据政策中AG... 详细信息

具有快速充放电特性的储能技术,作为一种新的调频方式已逐步进入多国的辅助服务市场,参与到传统机组的自动发电控制(AGC)中。基于华北地区的辅助服务补偿政策,提出了改善电厂调频性能的储能充放电策略和容量配置方法。首先,根据政策中AGC考核指标Kp值的定义,提出调节速率、调节精度、响应时间3项指标的计算方法,并制定出提升调节性能、降低响应时间的储能充放电策略。同时,为了延长储能的使用寿命,制定了电池荷电状态的越限回归策略。在分析储能各项成本和收益的基础上,建立了以净收益最大为目标函数的储能经济性模型。最后,通过具体算例,对使用该策略前后机组的AGC性能进行对比分析并采用差分进化算法计算出了机组配置储能的最优容量。结果表明,使用储能策略可以显著提升机组的Kp值,带来明显的调频收益。

关键词：自动发电控制储能控制策略经济评估最优容量

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基于DEM的巴山地区地貌区划研究

水土保持研究 2022年第1期29卷 127-132,139页

作者：姜雨璇查小春陕西师范大学地理科学与旅游学院西安710119

地貌区划是对地貌形成过程和区域分异特征的综合反映,划分巴山地区的地貌区划,对探究巴山地区地貌格局以及地貌差异具有重要意义。利用ArcGIS 10.2软件,基于分辨率为30 m的ASTER GDEM V3数据,提取了巴山地区的坡度、坡向、平面曲率、剖... 详细信息

地貌区划是对地貌形成过程和区域分异特征的综合反映,划分巴山地区的地貌区划,对探究巴山地区地貌格局以及地貌差异具有重要意义。利用ArcGIS 10.2软件,基于分辨率为30 m的ASTER GDEM V3数据,提取了巴山地区的坡度、坡向、平面曲率、剖面曲率、海拔高度、地势起伏度、地表切割深度、地表粗糙度和高程变异系数等地形因子,并通过相关系数矩阵确定最佳地形因子,在此基础上对巴山地区地貌类型和地貌区划进行划分。结果表明:(1)巴山地区地貌区划的最佳地形因子为海拔高度和地势起伏度;(2)巴山地区的地貌类型依据海拔高度划分为低海拔、中海拔,依据地势起伏度划分为平原、台地、丘陵、小起伏山地、中起伏山地;(3)巴山地区的地貌区划划分为2个地貌区、5个地貌亚区和18个地貌小区。区划结果符合巴山的地貌空间分布以及地貌格局差异,能有效地体现巴山地区的地貌特征,对巴山生态环境建设具有指导意义。

关键词：巴山地形因子地势起伏度地貌区划

民事权利冲突司法认定研究——以执行异议之诉中不动产物权期待权与抵押权冲突为视角

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江汉论坛 2020年第12期 106-112页

作者：姜宇轩贾宏斌日本山口大学东亚研究所日本山口7538511 沈阳市中级人民法院辽宁沈阳110013

权利冲突是法治领域中的一个世界性问题,学术界注重从权利位阶、权利交易、利益衡量以及提升社会资源总量等维度关注解决权利冲突的法律路径,而实务界通常聚焦于争议双方因同时行使各自享有的法律上的正当性权利而发生的冲突,司法裁判... 详细信息

权利冲突是法治领域中的一个世界性问题,学术界注重从权利位阶、权利交易、利益衡量以及提升社会资源总量等维度关注解决权利冲突的法律路径,而实务界通常聚焦于争议双方因同时行使各自享有的法律上的正当性权利而发生的冲突,司法裁判难以采取消灭其中一项权利或证明其不存在的方式予以化解,而必须致力于创制出解决权利冲突的具体规范。比如,购房者享有的不动产物权期待权与银行享有的房屋抵押权在执行异议之诉这一场域内的冲突,以及由此导致的裁判观点分歧,充分反映和暴露了现行法律及司法解释规定与生活实践、行政规定、行业规范、法官自由裁量权等诸多方面的协调、衔接还存在亟需完善的地方。在彰显和宣示民事权利保护的《民法典》即将实施之际,加强对权利冲突研究,有助于将民法典中静态的权利分布纳入动态运行环境之中,通过公正统一的司法裁判不断探求和验证权利的本质,提升化解不同类型权利在追求各自权利实现过程中产生的矛盾和冲突的国家治理能力和治理体系法治化水平。

关键词：权利冲突执行异议之诉抵押权物权期待权

新时代背景下中国体育促进可持续发展的机遇、理念与策略行动

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武汉体育学院学报 2020年第12期54卷 18-25页

作者：李根张琪蒋宇璇北京师范大学体育与运动学院北京100875

近年来可持续发展已成为全球共同推动的发展方针,而体育促进可持续发展的价值与作用也逐渐被国际社会所重视。以国内外相关研究成果为理论基础,对新时代背景下中国体育促进可持续发展工作的时代机遇、价值理念与策略行动进行探究。研究... 详细信息

近年来可持续发展已成为全球共同推动的发展方针,而体育促进可持续发展的价值与作用也逐渐被国际社会所重视。以国内外相关研究成果为理论基础,对新时代背景下中国体育促进可持续发展工作的时代机遇、价值理念与策略行动进行探究。研究表明:以联合国、奥委会为代表的国际社会开展的体育促进可持续发展的实践工作,以及我国政府对可持续发展的重视和体育领域不断深化改革的需求,为我国体育促进可持续发展工作的持续开展提供了机遇和条件。结合联合国可持续发展议程与人类命运共同体的视角进行分析,体育促进可持续发展的价值理念可以在性别、环境、社区发展、伙伴关系、机构治理等多个方面得到具体呈现,丰富了对体育社会价值的认识。回顾历史上体育促进可持续发展的工作经验、更新体育促进社会发展的价值认识,将为具体工作的开展奠定基础。而在我国内部体育治理和对外体育交往的各项工作中融入、践行可持续发展的理念与方针,将切实推动该领域工作的价值实现。

关键词：体育治理可持续发展人类命运共同体体育价值体育改革