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Global Probabilistic Voltage Sensitivity Analysis of Active Distribution Networks Based on the Compound Gaussian Mixture Model

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Dianwang Jishu/Power System Technology 2025年第1期49卷 295-305页

作者： zhang, Ren Wang, Jian Shang, jie Hai, Chen Liu, Haoming School of Electrical and Power Engineering Hohai University Jiangsu Province Nanjing 211100 China College of Artificial Intelligence and Automation Hohai University Jiangsu Province Nanjing 211100 China

The stochasticity of the high penetration of distributed generations (DGs) exacerbates the voltage fluctuation of the active distribution networks (ADNs) and complicates its voltage safety analysis. Therefore, this paper proposes a global probability voltage sensitivity analysis method based on the compound Gaussian mixture model (GMM). Firstly, a shared node path impedance-based global voltage sensitivity analytical model of ADN is derived to quantify the impact of global power fluctuations on node voltage. Considering that the voltage fluctuation has the non-Gaussian characteristic under the superposition influence of power uncertainty injected by multiple nodes, the GMM is used to characterize the probability characteristics of DG and load forecasting errors. Then, based on the affine transformation of the global sensitivity matrix to the GMM of DG and load forecasting error, the probability analytic expression of the voltage fluctuation is constructed, which is caused by the uncertainty of DG and load. Finally, based on the GMM characteristic function, the compound GMM characteristic function of the combined influence of the uncertainty of DG and load on voltage fluctuation is derived, and the global probabilistic voltage sensitivity analysis model based on the compound GMM is established. The case study results show that the proposed method can reflect the probability characteristics of the impact of all node power fluctuations on node voltage, and can quickly and accurately calculate the probability of over-voltage in ADNs. © 2025 Power System Technology Press. All rights reserved.

关键词： Affine transforms

钦寸水库大坝建设对鱼类资源的影响预测及其保护对策

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水生态学杂志 2009年第5期2卷 123-127页

作者：原居林朱俊杰张爱菊浙江省淡水水产研究所浙江湖州313001

报道了浙江省钦寸水库工程建设对所涉及流域鱼类资源的影响及其相关保护对策。调查发现该区域内现有鱼类31种,隶属5目14科;饵料生物70种,隶属6门4大类。其中,国家重点保护的经济水生动植物资源11种。从生物学习性方面归纳了鱼类基本归... 详细信息

报道了浙江省钦寸水库工程建设对所涉及流域鱼类资源的影响及其相关保护对策。调查发现该区域内现有鱼类31种,隶属5目14科;饵料生物70种,隶属6门4大类。其中,国家重点保护的经济水生动植物资源11种。从生物学习性方面归纳了鱼类基本归属的生态类型:鱼类的栖息环境、食物类型、洄游及繁殖习性;同时,根据水库开发的实际情况,从生态学的角度阐述了水库建设对鱼类栖息环境、食物类型、繁殖时间、繁殖习性以及洄游等特性的负面影响,指出由于水库建设造成的阻隔影响、水文情势变化、饵料和生境改变,将会是造成该流域鱼类物种多样性严重丧失的主要原因。为减免这些影响,建议采取相应的保护措施,通过建立自然保护区、增殖放流等方式,切实有效保护该区域内的鱼类资源。

关键词：钦寸水库鱼类资源影响预测保护对策

Sulfolane‑Based Flame‑Retardant Electrolyte for High‑Voltage Sodium‑Ion Batteries

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Nano-Micro Letters 2025年第2期17卷 498-516页

作者： Xuanlong He jie Peng Qingyun Lin Meng Li Weibin Chen Pei Liu Tao Huang Zhencheng Huang Yuying Liu Jiaojiao Deng Shenghua Ye Xuming Yang Xiangzhong Ren Xiaoping Ouyang Jianhong Liu Biwei Xiao Jiangtao Hu Qianling zhang Graphene Composite Research Center College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Center of Electron Microscopy State Key Laboratory of Silicon and Advanced Semiconductor MaterialsSchool of Materials Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China GRINM(Guangdong)Research Institute for Advanced Materials and Technology FoshanGuangdong 528051People’s Republic of China College of Energy Engineering Zhejiang UniversityHangzhouZhejiang 310027People’s Republic of China School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105People’s Republic of China Shenzhen Eigen-Equation Graphene Technology Co.Ltd Shenzhen 518000People’s Republic of China

Sodium-ion batteries hold great promise as next-generation energy storage ***,the high instability of the electrode/electrolyte interphase during cycling has seriously hindered the development of *** particular,an unstable cathode–electrolyte interphase(CEI)leads to successive electrolyte side reactions,transition metal leaching and rapid capacity decay,which tends to be exacerbated under high-voltage ***,constructing dense and stable CEIs are crucial for high-performance *** work reports localized high-concentration electrolyte by incorporating a highly oxidation-resistant sulfolane solvent with non-solvent diluent 1H,1H,5H-octafluoropentyl-1,1,2,2-tetrafluoroethyl ether,which exhibited excellent oxidative stability and was able to form thin,dense and homogeneous *** excellent CEI enabled the O3-type layered oxide cathode NaNi_(1/3)Mn_(1/3)Fe_(1/3)O_(2)(NaNMF)to achieve stable cycling,with a capacity retention of 79.48%after 300 cycles at 1 C and 81.15%after 400 cycles at 2 C with a high charging voltage of 4.2 *** addition,its nonflammable nature enhances the safety of *** work provides a viable pathway for the application of sulfolane-based electrolytes on SIBs and the design of next-generation high-voltage electrolytes.

关键词： Sodium-ion batteries Sulfolane-based electrolyte High voltage Layered oxide cathode Flame retardant

Recent progress in metal-organic frameworks(Part II—material application)

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Science China Chemistry 2025年

作者： Jiandong Pang Wentao Jiang Xue-Wen zhang Hao-Long Zhou Yuxiu Sun Wei Gong Bin Wang Fuyin Ma Linwei He Long Chen Qiang Chen He-Qi Zheng Yuanjing Cui Wen-jie Shi Chao zhang Mei Wang Yue-Biao zhang jie-Peng zhang Chongli Zhong Yong Cui Shuao Wang Jian-Rong Li Guodong Qian Tong-Bu Lu Huan Pang Xian-He Bu Institute for New Energy Materials and Low Carbon Technologies School of Materials Science and Engineering Tianjin University of Technology School of Chemistry and Chemical Engineering Yangzhou University School of Materials Science and Engineering Nankai University School of Physical Science and Technology ShanghaiTech University MOE Key Laboratory of Bioinorganic and Synthetic Chemistry GBRCE for Functional Molecular Engineering School of Chemistry IGCMESun Yat-sen University Department of Chemistry Shantou University School of Chemical Engineering and Technology Tiangong University School of Chemistry and Chemical Engineering Shanghai Jiao Tong University State Key Laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary Sciences Soochow University College of Materials Science & Engineering Beijing University of Technology State Key Laboratory of Silicon and Advanced Semiconductor Materials Cyrus Tang Center for Sensor Materials and ApplicationsSchool of Materials Science & Engineering Zhejiang University

As a class of functional crystalline porous materials, metal-organic frameworks(MOFs) gained rapid development in the past three decades and a large number of MOFs with ordered structures, high surface areas, and functionalized channels have been investigated. MOFs and MOF-derived/composite materials show great potential in many application fields. In this review, we discussed the main applications of MOFs and MOF-derived/composite materials in small molecule storage, separation, luminescence, sensing, multitype catalysis, and energy storage. In addition, challenges and problems in the future research of MOFsrelated fields are also discussed.

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Maintaining moderate levels of hypochlorous acid promotes neural stem cell proliferation and differentiation in the recovery phase of stroke

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Neural Regeneration Research 2025年第3期20卷 845-857页

作者： Lin-Yan Huang Yi-De zhang jie Chen Hai-Di Fan Wan Wang Bin Wang Ju-Yun Ma Peng-Peng Li Hai-Wei Pu Xin-Yian Guo Jian-Gang Shen Su-Hua Qi School of Medical Technology Xuzhou Key Laboratory of Laboratory DiagnosticsXuzhou Medical UniversityXuzhouJiangsu ProvinceChina School of Pharmacy Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina Department of Laboratory Medicine Branch Hospital of Huai’an First People’s HospitalHuai’anJiangsu ProvinceChina Department of Laboratory Medicine the Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina School of Chinese Medicine The University of Hong KongHong Kong Special Administrative RegionChina

It has been shown clinically that continuous removal of ischemia/reperfusion-induced reactive oxygen species is not conducive to the recovery of late ***,previous studies have shown that excessive increases in hypochlorous acid after stroke can cause severe damage to brain *** previous studies have found that a small amount of hypochlorous acid still exists in the later stage of stroke,but its specific role and mechanism are currently *** simulate stroke in vivo,a middle cerebral artery occlusion rat model was established,with an oxygen-glucose deprivation/reoxygenation model established in vitro to mimic *** found that in the early stage(within 24 hours)of ischemic stroke,neutrophils produced a large amount of hypochlorous acid,while in the recovery phase(10 days after stroke),microglia were activated and produced a small amount of hypochlorous ***,in acute stroke in rats,hypochlorous acid production was prevented using a hypochlorous acid scavenger,taurine,or myeloperoxidase inhibitor,4-aminobenzoic acid *** results showed that high levels of hypochlorous acid(200μM)induced neuronal apoptosis after oxygen/glucose deprivation/***,in the recovery phase of the middle cerebral artery occlusion model,a moderate level of hypochlorous acid promoted the proliferation and differentiation of neural stem cells into neurons and *** suggests that hypochlorous acid plays different roles at different phases of cerebral ischemia/reperfusion *** levels of hypochlorous acid(5 and 100μM)promoted nuclear translocation ofβ-*** transfection of single-site mutation plasmids,we found that hypochlorous acid induced chlorination of theβ-catenin tyrosine 30 residue,which promoted nuclear ***,our study indicates that maintaining low levels of hypochlorous acid plays a key role in the recovery of neurological function.

关键词： cell differentiation cerebral ischemia/reperfusion injury chlorination hypochlorous acid microglia neural stem cell neurogenesis nuclear translocation stroke β-catenin

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智能制瓶注吹一体成型系统的设计与研究

饮料工业 2018年第1期21卷 64-67页

作者：金军杰陈彬张佳靓宏胜饮料集团有限公司浙江杭州311200

该文着重介绍智能制瓶注吹一体成型机的工作原理和结构,以及一种伺服驱动与快速油缸组合注吹合模系统,通过对智能制瓶注吹一体成型机采用先进的单缸注射单元与伺服控制系统结合使用,从而达到设备节能、高速、稳定等效果。

关键词：注吹一体制瓶伺服控制精密节能高速稳定

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幽门螺杆菌临床分离株耐药特点分析

世界华人消化杂志 2007年第9期15卷 1012-1015页

作者：杨行堂张俊杰张旖晴余远怀陈锡美王志荣同济大学附属同济医院消化科同济大学消化疾病研究所上海市200065

目的:探讨幽门螺杆菌(H pylori)对常用抗生素的耐药特点.方法:将来自不同患者的胃镜活检标本分别涂布接种幽门螺杆菌培养基后37℃微需氧环境下培养96 h,得61株H pylori临床分离株.对其采用Kirby-Bauer法行甲硝唑、克拉霉素、阿莫西林、... 详细信息

目的:探讨幽门螺杆菌(H pylori)对常用抗生素的耐药特点.方法:将来自不同患者的胃镜活检标本分别涂布接种幽门螺杆菌培养基后37℃微需氧环境下培养96 h,得61株H pylori临床分离株.对其采用Kirby-Bauer法行甲硝唑、克拉霉素、阿莫西林、呋喃唑酮4种抗生素药敏试验,并分析其特点.结果:H pylori临床分离株对甲硝唑、克拉霉素、阿莫西林、呋喃唑酮4种抗生素的耐药率分别为54.1%,37.7%,41.0%和45.9%.4种抗生素耐药率比较无统计学差异(P>0.05).甲硝唑耐药存在性别差异(P=0.037).甲硝唑、克拉霉素、阿莫西林耐药与患者用药史相关(P= 0.028;P=0.034;P=0.005).4种抗生素耐药与患者疾病类型及年龄无关(P>0.05).结论:4种抗生素耐药率均较高.耐药率与用药史相关,与疾病类型及年龄未见相关性.

关键词：幽门螺杆菌抗生素耐药

西南地区河成湖与火山湖土地利用对水质的多时空尺度影响差异

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湖泊科学 2025年第1期37卷 132-148,I0011-I0014页

作者：刘捷刘睿左书林张静重庆师范大学地理与旅游学院重庆401331 重庆师范大学 GIS应用研究重庆市重点实验室重庆401331

为探究不同时空尺度下不同湖泊类型土地利用对水质的影响差异,以四川省自贡市富顺西湖(河成湖)和云南省腾冲市青海湖(火山湖)为研究对象,提取6个空间尺度(50、60、70、80、90、100 m湖岸带缓冲区)的景观格局指数,结合雨季(2022年7月)和... 详细信息

为探究不同时空尺度下不同湖泊类型土地利用对水质的影响差异,以四川省自贡市富顺西湖(河成湖)和云南省腾冲市青海湖(火山湖)为研究对象,提取6个空间尺度(50、60、70、80、90、100 m湖岸带缓冲区)的景观格局指数,结合雨季(2022年7月)和旱季(2023年4月)湖泊水质参数,采用冗余分析法定量探究不同时空尺度下土地利用对两类湖泊水质影响的差异性。结果表明:(1)富顺西湖与腾冲青海湖水质参数季节性差异显著,雨季水质优于旱季,两个湖泊水环境质量存在显著差异,腾冲青海湖水环境质量优于富顺西湖,腾冲青海湖符合地表水环境Ⅱ类、Ⅲ类水质标准,富顺西湖达到Ⅳ类、Ⅴ类水质标准。(2)富顺西湖在旱季和50~60 m湖岸带缓冲区尺度下土地利用参数对水质变量的解释率最大,腾冲青海湖在雨季和60 m湖岸带缓冲区尺度下土地利用参数对水质变量的解释率最大。(3)土地利用指数对两类湖泊水质的影响各不相同。富顺西湖流域内斑块密度、景观形状指数和聚合度指数与多数水质指标呈正相关,“源”景观聚集程度和破碎化程度高会加剧对水质的威胁。腾冲青海湖流域内林地面积占比和聚合度指数对水质具有正效应,能够改善水环境质量;斑块指数和景观形状指数值的增加会加剧斑块破碎化,导致水质恶化。本研究基于不同时空尺度对土地利用与两类湖泊水质关系的差异性进行深入探讨,指导不同类型湖泊的区域规划与管理,为湖泊环境质量评价及保护和制定针对性的湖泊缓冲带设置、生态修复等策略提供科学依据,进而促进湖泊水质安全和水资源可持续利用。

关键词：土地利用水质多尺度效应冗余分析西南地区湖泊

奥曲肽辅助肝动脉结扎治疗大鼠肝内移植瘤的初步观察

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复旦学报（医学版） 2001年第6期28卷 534-536页

作者：郭伟剑白永瑞庄军燕李杰张力张广慧严惠芳陆宏祺上海第二医科大学附属新华医院肿瘤中心肿瘤科上海200092 上海第二医科大学附属新华医院肿瘤中心放疗科上海200092 上海第二医科大学附属新华医院肿瘤中心检验科上海200092 上海医药工业研究院肿瘤药理室上海200437

目的　观察奥曲肽辅助肝动脉结扎 (HAL)治疗大鼠肝内移植瘤的效果。方法　采用大鼠肝内移植Walker 2 5 6肿瘤模型 ,分为对照组、HAL组、HAL +奥曲肽治疗组。观察治疗后肿瘤体积改变与肿瘤生长抑制率 ,Hoechst 33342标记法检测肿瘤组织血... 详细信息

目的　观察奥曲肽辅助肝动脉结扎 (HAL)治疗大鼠肝内移植瘤的效果。方法　采用大鼠肝内移植Walker 2 5 6肿瘤模型 ,分为对照组、HAL组、HAL +奥曲肽治疗组。观察治疗后肿瘤体积改变与肿瘤生长抑制率 ,Hoechst 33342标记法检测肿瘤组织血供 (标记细胞数代表血供情况 ) ,检测ALT、AST观察HAL、奥曲肽对肝功能的影响。结果　对照组、HAL组、HAL +奥曲肽治疗组肿瘤体积分别为 (0 .10 3± 0 .0 4 3)cm3 、(0 .0 30± 0 .0 18)cm3 、(0 .0 16± 0 .0 0 5 )cm3 ,后 2组肿瘤体积明显小于对照组 (P <0 .0 1) ,肿瘤抑制率分别为70 .8%、84 .5 %。HAL +奥曲肽治疗组肿瘤体积明显小于HAL组 (P <0 .0 5 )。对照组、HAL组、HAL +奥曲肽组Hoechst 33342标记细胞数分别为 36 9.7± 30 .2、344 .1± 2 6 .0、32 3.2± 4 0 .4 ,HAL +奥曲肽组标记细胞数明显少于对照组 ,提示其血供明显减少。HAL及奥曲肽对肝功能无明显影响。结论　奥曲肽能明显提高肝动脉结扎治疗大鼠肝内移植瘤的效果 ,减少动脉阻断后的肿瘤血供可能为主要机制之一。

关键词：肝肿瘤肝动脉结扎奥曲肽治疗