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Development of Zeff diagnostic system on the Globus-M（M2） tokamak and the first experimental results

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Plasma Science and Technology 2019年第10期21卷 33-39页

作者： E A TUKHMEnEVA S yu TOLSTYAKOV G S KURSKIEV V K GUSEV V B MInAEV yu V PETROV n V SAKHAROV A yu TELnOVA n n BAKHAREV P B SHEGOLEV E O KISELEV Ioffe Institute

Studying the behavior of effective ion charge Zeff, which indicates the degree of pollution of plasma and can provide valuable information about many processes taking place in plasma, mechanisms of the releasing impurities, transport, etc is of great interest. This paper describes the development of the Zeff diagnostic system for the Globus-M2 tokamak. The effective ion charge is determined on the basis of measurements of the bremsstrahlung intensity and Thomson scattering data-Te and ne profiles. The results of the first Zeff measurements obtained for several discharges on the Globus-M tokamak are presented in this paper. The results have been validated by simulation using the ASTRA transport code for the same discharges, and it has demonstrated a good agreement with the experimental results.

关键词： tokamak effective ion charge magnetic confinement

Source-network Frequency Cooperative Control and Parameter Optimization Method for High Proportion Renewable Energy UHVDC Feeder Grid

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Dianwang jishu/Power System Technology 2025年第1期49卷 263-271页

作者： Xie, Yan Tang, Xiaoj.n Dong, yu Ma, Shiying Shen, jiakai Yan, jianfeng Haidian District Beijing 100192 China State Grid Corporation of China Xicheng District Beijing 100031 China

How to balance the frequency regulation performance and the economic cost to reduce or prevent the system’s generator-tripping and load-shedding is a crucial challenge in enhancing the reliability of high-ratio renewable energy power systems. To explore the power system source-network frequency cooperative control methods, this paper takes renewable energy generators and LCC-HVDC systems as examples, analyzes the frequency regulation principle and control strategy of the main potential resources, and constructs a multi-dimensional evaluation index system for different frequency regulation measures. Further, combining the ideas of global optimization of parameters based on typical scenarios, disturbances and secondary optimization based on actual disturbances, a source-network frequency cooperative control and parameter optimization method based on the comprehensive effectiveness assessment of frequency regulation measures is proposed. Finally, based on the 2023 data of a UHVDC feeder grid and the frequency test data of a typical renewable energy power station, the PSASP software platform is used to construct a simulation model of the region's power grid after calibration. The validation and analysis of the proposed method is carried out for the typical daytime and nighttime operation modes. The results show that the source-network frequency cooperative control and parameter optimization method based on the comprehensive effectiveness assessment of frequency regulation measures proposed in the paper can significantly improve the frequency support capability of the system while considering the economic cost. © 2025 Power System Technology Press. All rights reserved.

关键词： HVDC power transmission

Unveiling phosphofructokinase as the key target: an innovative strategy combining pull-down assays with optical imaging for snail-killing mechanism exploration

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Science China Chemistry 2025年

作者： yuxun Lu Weisi Wang Le yu yuqiang Zhao Ying Chen yunhai Guo Bingrong Luo yuhua Liu Shizhu Li Liping Duan Ying Zhou yunnan Characteristic Plant Extraction Laboratory College of Chemical Science and Technology Yunnan University College of Biological and Chemical Engineering Guangxi University of Science and Technology national Institute of Parasitic Diseases Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research)NHC Key Laboratory of Parasite and Vector Biology WHO Collaborating Centre for Tropical Diseases National Center for International Research on Tropical Diseases School of Chemistry and Environment Yunnan Minzu University Dali Institute of Schistosomiasis Control

The Pomacea canaliculata, also known as apple snail, is an invasive species in China, posing a serious threat to agricultural production and public health. To prevent its rampant infestation, we developed a highly efficient snail-killing lead compound, 1-(4-chlorophenyl)-3-(pyridin-3-yl)urea (PBQ). However, the killing mechanism of PBQ remains unclear. To elucidate this, two novel compounds, B-PBQ and j-PBQ, were developed through structural modification of PBQ and were used, through both protein pull-down assay and confocal laser scanning microscopy imaging, to identify and confirm that phosphofructokinase(PFK) in the apple snail is the primary target protein of PBQ. Further studies revealed that PBQ successfully inhibits the activity,content, and expression of PFK in apple snail, disrupting the glycolysis pathway and leading to abnormal energy *** disruptions impair the snail’s tolerance to low oxygen, resulting in its efficient eradication. These findings offer a promising direction for developing next-generation PFK-targeted snail-killing pesticides. Furthermore, the strategy of combining pull-down assays with optical imaging used in this work provides a novel approach for the exploration of mechanisms of other pesticide candidates.

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Climate Change, Risk and Grain Yields in China

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journal of Integrative Agriculture 2013年第7期12卷 1279-1291页

作者： Rainer Holst Xiaohua yu Carola Grün Courant Research Center 'Poverty Equity and Growth' Georg-August-University of Goettingen World Bank

Adopting just and Pope （1978, 1979） style yield functions, this paper proposes a method to analyze the impacts of regional climate change on grain production in China. We find that changes in climate will affect grain production in north and South China differently. Specifically, it emerges that a 1℃ increase in annual average temperature could reduce national grain output by 1.45% （1.74% reduction in north China and 1.19% reduction in South China）, while an increase in total annual precipitation of around 100 mm could increase national grain output by 1.31% （3.0% increase in north China and 0.59% reduction in South China）.

关键词： grain yield climate change yield risk China

纽约大学库朗数学科学研究所交叉科研组织模式发展路径分析

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黑龙江高教研究 2025年第1期43卷 72-79页

作者：于依琼聂映玉陈青上海交通大学上海200240 华东师范大学上海200062

有效组织交叉科学研究面临诸多挑战。纽约大学库朗数学科学研究所通过从平衡数学学科内部分支到构建跨学科知识体系、从研究单一问题到满足国家与社会需求、从促进合作交流到建立学科集群等措施,成功构建了组织交叉科学研究的发展路径... 详细信息

有效组织交叉科学研究面临诸多挑战。纽约大学库朗数学科学研究所通过从平衡数学学科内部分支到构建跨学科知识体系、从研究单一问题到满足国家与社会需求、从促进合作交流到建立学科集群等措施,成功构建了组织交叉科学研究的发展路径。其关键因素在于传承交叉科研核心价值观、孵化多元化交叉平台、实施自主灵活用人机制和精准定位目标人才培养模式等。研究发现,其交叉科研组织模式展现了与超学科理论核心原则高度一致的生长逻辑。借鉴超学科理论,提出交又科研核心价值观的树立传承、基础学科与优势学科多维融合、研究成果的社会应用与转化等策略建议,旨在为我国高校和科研机构在组织交叉科学研究时提供理论指导和实践参考。

关键词：交叉科学研究组织模式基础学科超学科纽约大学库朗数学科学研究所

Palladium installed copper-organic framework for C–C coupling reactions

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Science China Chemistry 2025年

作者： yu-Mei Wang Mei-Xia Tao Kai-Ming Mo Xu Chen Shu-Hua Zhong Elena S Shubina Guo-Hong ning Dan Li College of Chemistry and Materials Science Guangdong Provincial Key Laboratory of Supramolecular Coordination ChemistryJinan University A.n.nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences

The formation of C–C bonds is a crucial aspect of organic synthesis. Synthesists' long-term objective is to identify novel catalysts to optimize reaction systems based on traditional transition metal catalysis. This study explores the synthesis and catalytic potential of palladium-installed covalent metal-organic frameworks(CMOFs) based on copper cyclic trinuclear units(Cu-CTUs). By incorporating palladium ions into the imine-based framework jnM-7 through a straightforward immersion method, we achieved a notable enhancement in catalytic activity for critical C–C coupling reactions, including C–H arylation and Sonogashira cross-coupling. The resulting jnM-7-Pd demonstrated remarkable stability and recyclability, maintaining its efficiency over at least three cycles without any decline in efficiency.

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渐近线性Klein-Gordon-Maxwell系统解的存在性和非存在性

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应用数学 2025年第1期38卷 95-103页

作者：孙歆段誉贵州工程应用技术学院理学院贵州毕节551700

本文研究了一类Klein-Gordon-Maxwell系统,其中位势在无穷远处可能是消失的.当非线性项在无穷远处是渐近线性增长时,利用变分方法讨论了系统正解的存在性和非存在性.完善了此系统解存在性的已有结果.

关键词： Klein-Gordon-Maxwell系统变分法渐近线性消失位势

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狱律与旁律——出土秦汉律篇形成过程探微

古代文明（中英文） 2025年第1期19卷 68-83,M0005页

作者：于洪涛吉林大学古籍研究所、“古文字与中华文明传承发展工程”协同攻关创新平台吉林长春130012

秦代律篇主要是以职官律和职事律间杂方式进行分篇,至秦末职官律逐渐向职事律转化。汉初完全继承了秦代的法律体系,并将与盗、贼、亡、收、复、迁等犯罪行为逐渐作为重要的约束对象,而对于抓捕、鞫审、告劾、拘押等有关官吏规范法律进... 详细信息

秦代律篇主要是以职官律和职事律间杂方式进行分篇,至秦末职官律逐渐向职事律转化。汉初完全继承了秦代的法律体系,并将与盗、贼、亡、收、复、迁等犯罪行为逐渐作为重要的约束对象,而对于抓捕、鞫审、告劾、拘押等有关官吏规范法律进行集合,形成了规范刑事犯罪为主体的“狱律”,其他具有规范性质的律章则放入了“旁律”。至此形成了“狱律”“旁律”体系的二分结构,而“旁律”则作为“狱律”条文的重要来源。

关键词：狱律旁律法经九章律律名

适应性理论视角下中国社区社会组织的发展策略和逻辑

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学习论坛 2025年第1期 89-99页

作者：于海利河南大学哲学与公共管理学院河南开封475001

社区社会组织作为基层社会治理格局中的重要治理主体,其有活力、有秩序的发展并融入基层社会治理格局是我国社会发展过程中的重要现象。作为顺应现实需求和政策推动的产物,社区社会组织的自身发展经历了从动顺应到行政吸纳的发展过程,... 详细信息

社区社会组织作为基层社会治理格局中的重要治理主体,其有活力、有秩序的发展并融入基层社会治理格局是我国社会发展过程中的重要现象。作为顺应现实需求和政策推动的产物,社区社会组织的自身发展经历了从动顺应到行政吸纳的发展过程,并形成了吸纳秩序。然而,随着社区社会组织自身的规范性发展以及治理性功能显现,其逐步超越了吸纳秩序从而实现策略性合作。目前,社区社会组织正通过融合融入、结构调适、外部驱动等策略,在基层社会治理格局中实现目标方向、多元利益、外部资源等多层次的整合性发展。

关键词：社区社会组织适应性吸纳整合性发展