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Comprehensive metabolic profiling of dioxin-like compounds exposure in laying hens:Implications for toxicity assessment

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Journal of Environmental Sciences 2025年第2期148卷 107-115页

作者： Xiaoxu Hu Tong Xu Yangsheng Chen Qian zhang Lijuan Tang Liping Zheng Chu Wang Pu Wang Shujun Dong Ruiguo Wang Su zhang qinghua zhang Heidi Qunhui Xie Li Xu Bin Zhao State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Department of Cardiology Beijing HospitalNational Center of GerontologyBeijing 100730China School of Environment Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China Hubei Key Laboratory of Industrial Fume and Dust Pollution Control School of Environment and HealthJianghan UniversityWuhan 430056China Institute of Quality Standards and Testing Technology for Agro-Products Chinese Academy of Agricultural SciencesBeijing 100081China

The evaluation of toxicity related to polychlorinated dibenzo-p-dioxins and furans(PCDD/Fs)and dioxin-like polychlorinated biphenyls(DL-PCBs)is crucial for a comprehensive risk assessment in real-world exposure *** study employed a controlled feeding experiment to investigate the metabolic effects of dioxin-like compounds(DLCs)on laying hens via feed *** enriched with two concentrations(1.17 and 5.13 pg toxic equivalents(TEQ)/g dry weight(dw))were administered over 14 days,followed by 28 days of clean *** analyses of blood samples revealed significant metabolic variations between PCDD/Fs and DL-PCBs exposed groups and controls,reflecting the induced metabolic *** changes were observed in sphingosine,palmitoleic acid,linoleate,linolenic acid,taurocholic acid,indole acrylic acid,and dibutyl phthalate levels,implying possible connections between PCDD/Fs and DL-PCBs toxic effects and energy-neuronal imbalances,along with lipid accumulation and anomalous amino acid metabolism,impacting taurine ***,we identified three differential endogenous metabolites—L-tryptophan,indole-3-acetaldehyde,and indole acrylic acid—as potential ligands for the aryl hydrocarbon receptor(AhR),suggesting their role inmediating PCDD/Fs and DL-PCBs *** comprehensive investigation provides novel insights into the metabolic alterations induced by PCDD/Fs and DL-PCBs in laying hens,thereby enhancing our ability to assess risks associated with their exposure in human populations.

关键词： Polychlorinated dibenzo-p-dioxins and furans Dioxin-like polychlorinated biphenyls Laying hens Metabolomic

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Unveiling the superior hydrogen evolution reaction activity of 1T-2H MoS_(2)heterointerface by on-chip microdevices

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Nano Research 2025年第1期18卷 149-156页

作者： Bowen Liu Junjie Xiong Shuaishuai Xu Xinying Luo Wenyan Yao Shigang Liu Yuting Du qinghua zhang Yang Gao Bin Wang CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology(NCNST)Beijing 100190China University of Chinese Academy of Sciences Beijing 100049China School of Materials Science and Engineering China University of Petroleum(East China)Qingdao 266580China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China

The identification and clarification of active sites of MoS_(2)have long been the focus of research efforts in hydrogen evolution reaction(HER).In this study,we constructed phase transition-induced 1T-2H MoS_(2)heterojunction via lithium intercalation and evaluated the HER activity using on-chip electrocatalytic microdevices(OCEMs).The heterojunction achieved an overpotential of only 226 mV at a cathodic current density of 10 mA/cm^(2),outperforming the basal planes of 1T and 2H MoS_(2).Furthermore,density functional theory(DFT)calculations demonstrated that the charge redistribution occurs at the 1T-2H MoS_(2)interface with electrons transferring from 1T to 2H MoS_(2),and the interfacial S atom at the top site of 1T MoS_(2)presents the smallest overpotential of 0.37 ***,the interference from highly active edge sites was avoided by precisely exposing specific active areas,quantitatively revealing the catalytic activity order of different types of in-plane MoS_(2)active *** work enables a systematic investigation of the HER activity of various active sites in MoS_(2),laying the foundation for quantitative analysis of activity in other lowdimensional materials.

关键词： on-chip microdevice phase transition heterojunction MoS_(2) hydrogen evolution reaction(HER)

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南方写作或诗意小说的新形构——关于龚万莹小说的一点感想

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南方文坛 2025年第1期 169-171页

作者：张清华北京师范大学文学院

谈龚万莹的小说,没有办法不谈到她的地方性,也就是其南方性。因为她一出手,就显示了浓厚的南方情调——更具体一点说,是“闽南情调”。她的叙述中充满了夏日茂密与葳蕤的草木气息,充满了雨季的幽晦与潮湿,还有一种童年时光与经历中特有... 详细信息

谈龚万莹的小说,没有办法不谈到她的地方性,也就是其南方性。因为她一出手,就显示了浓厚的南方情调——更具体一点说,是“闽南情调”。她的叙述中充满了夏日茂密与葳蕤的草木气息,充满了雨季的幽晦与潮湿,还有一种童年时光与经历中特有的缥缈与不确定性。当然,这样说还是让人感到有些抽象,再直接一点说,那便是她的语言的陌生感,那种奇特的“闽南话”的调性。很显然,她的叙述格调与语言都给人留下了难忘的印象,就像一位新歌手的出现和被记住,是因为其音色和“声线”的与众不同,其音质的令人惊艳。

关键词：闽南话陌生感不确定性

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为什么要提及新世纪文学的历史化——几个关键词的说明

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当代作家评论 2025年第1期 15-19页

作者：张清华北京师范大学国际写作中心

一、小引或破题为什么要提及新世纪文学的历史化?我用了“提及”,一个最低限度的词,相当于“刍议”,避免使用尺度太大。或许,已经有研究者在做历史化的工作了,但我以为即使现在做,也已经是相当滞后了,比之20世纪90年代末的几部文学史著... 详细信息

一、小引或破题为什么要提及新世纪文学的历史化?我用了“提及”,一个最低限度的词,相当于“刍议”,避免使用尺度太大。或许,已经有研究者在做历史化的工作了,但我以为即使现在做,也已经是相当滞后了,比之20世纪90年代末的几部文学史著作对于20世纪90年代文学现象的处理。

关键词：文学的历史文学史著作新世纪关键词 20世纪90年代末最低限度

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Leader-follower:Human-centered intention-guided controller for novel SuperLimb with application to load-carrying scenarios

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Science China(Technological Sciences) 2025年第1期68卷 321-334页

作者： qinghua zhang Xianglong LI Hongwei JING Kerui SUN Yuancheng LI Sikai ZHAO Lele LI Haotian JU Ziqi WANG Rui WU Tianjiao ZHENG Jie ZHAO Yanhe ZHU The State Key Laboratory of Robotics and System Harbin Institute of TechnologyHarbin 150001China The Learning Algorithms and Systems Laboratory School of EngineeringÉcole Polytechnique Fédérale de LausanneLausanne CH 101510587Switzerland

Supernumerary robotic arms(SuperLimb)are a new type of wearable robot that works closely with humans as a third hand to augment human operation *** conveyance of wearers'intentions,allocation of roles,and humancentered interaction considerations are the key points in the process of human-SuperLimb *** paper proposes a human-centered intention-guided leader-follower controller that relies on the dynamic modeling of SuperLimb with application to load-carrying *** proposed leader-follower controller takes the human as the leader and the SuperLimb as the follower,achieving effective information communication,autonomous coordination,and good force compliance between SuperLimb,humans,and the environment under human safety ***,the human-SuperLimb dynamic system is modeled to achieve force interaction with the environment and ***,to achieve the precise intention extraction of humans,pose data from five visual odometry sensors are fused to capture the human state,the generalized position,the velocity of hands,and the surface electromyography signals from two myoelectric bracelets sensors are processed to recognize the natural hand gestures during load-carrying scenarios by a designed Swin transformer ***,based on the real-time distance detection between human and mechanical limbs,the security assurance and force-compliant interaction of the human-SuperLimb system are ***,the human hand muscle intention recognition,human-robot safety strategy verification,and comparative load-carrying experiments with and without the proposed method are conducted on the SuperLimb *** showed that the task parameters are well estimated to produce more reasonable planning trajectories,and SuperLimb could well understand the wearer's intentions to switch different SuperLimb *** proposed sensor-based human-robot communication framework motivates future studies of other collaboration scenes fo

关键词： SuperLimb leader-follower human intention estimation human-robot safety human-robot communication

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基于中医视角论述极端断食的致病性

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中国民族民间医药 2025年第1期34卷 115-118页

作者：王蕊章清华天津中医药大学第一附属医院/国家中医针灸临床医学研究中心天津300381

近年来,社会经济的蓬勃发展极大地改变了人们的饮食结构,人们在食物上获得满足感的同时,也承担着超重、肥胖以及各种慢性代谢性疾病发生的高风险。越来越多的人选择极端断食来达到减肥的目的,但是由于缺乏专业认知与科学指导,往往会造... 详细信息

近年来,社会经济的蓬勃发展极大地改变了人们的饮食结构,人们在食物上获得满足感的同时,也承担着超重、肥胖以及各种慢性代谢性疾病发生的高风险。越来越多的人选择极端断食来达到减肥的目的,但是由于缺乏专业认知与科学指导,往往会造成一系列健康问题。

关键词：断食脱发闭经失眠情绪异常

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Measurement methods of particle size distribution in emulsion polymerization

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Chinese Journal of Chemical Engineering 2021年第11期34卷 1-15页

作者： Shuaifeng zhang qinghua zhang Jianzhuang Shang Zaisha Mao Chao Yang CAS Key Laboratory of Green Process and Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China China National Petroleum&Chemical Planning Institute Beijing 100029China

The particle size distribution of polymer always develops in emulsion polymerization systems,and certain key phenomena/mechanisms as well as properties of the final product are significantly affected by this *** review mainly focuses on the measurement methods of particle size distribution rather than average particle size during the emulsion polymerization process,including the existing off-line,on-line,and in-line measurement ***,the principle,resolution,performance,advantages,and drawbacks of various methods for evaluating particle size distribution are contrasted and ***,several possible development directions or solutions of the in-line measurement technology are explored.

关键词： Particle size distribution Emulsion polymerization Off-line On-line In-line

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Effects of Load on Dry Sliding Wear Behavior of Mg–Gd–Zn–Zr Alloys

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Journal of Materials Science & Technology 2017年第7期33卷 645-651页

作者： Jie zhang Xiaobo zhang qinghua Liu Shujie Yang zhangzhong Wang School of Materials Science and Engineering Nanjing Institute of TechnologYNanjing 211167China Jiangsu-Key Laboratory of Advanced Structural Materials and APplication Technology Nanjing 211167China

Dry sliding wear tests on as-cast and T6-treated Mg-3Gd-1Zn-0.4Zr（wt%, GZ31K） and Mg-6Gd-1Zn-0.4Zr（wt%, GZ61K） alloys were performed using a ball-on-disk configuration at room temperature. Friction coefficient and wear rate of the alloys were measured under three different applied loads（50 N, 100 N, and 200 N, respectively）. Worn surface morphologies were analyzed using a scanning electron microscope（SEM） coupled with an energy dispersive spectrometer（EDS）. It is found that the friction coefficient of the alloys decreases with increasing load, except the as-cast GZ61 K. The wear rates of the as-cast Mg-Gd-Zn-Zr alloys increase with the increase of the load. However, the wear rates of the T6-treated Mg-Gd-Zn-Zr alloys first increase because of the participation of a large amount of needle-like precipitates, but then decline due to obvious work hardening. The wear mechanisms of abrasion, plastic deformation, oxidation, adhesion and delamination are detected. Abrasion dominates the wear mechanism under the low load; whereas, adhesion is the main wear mechanism under intermediate load, and plastic deformation has great effect on the wear rate under high applied load.

关键词： Magnesium alloys Applied load Wear and friction Wear mechanism

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Uncertain knowledge graph embedding:an effective method combining multi-relation and multi-path

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Frontiers of Computer Science 2024年第3期18卷 73-89页

作者： Qi LIU qinghua zhang Fan ZHAO Guoyin WANG Key Laboratory of Tourism Multisource Data Perception and Decision Ministry of Culture and TourismChongqing University of Posts and TelecommunicationsChongqing 400065China Chongqing Key Laboratory of Computational Intelligence Chongqing University of Posts and TelecommunicationsChongqing 400065China Chongqing Key Laboratory of Big Data Intelligent Computing Chongqing University of Posts and TelecommunicationsChongqing 400065China

Uncertain Knowledge Graphs(UKGs)are used to characterize the inherent uncertainty of knowledge and have a richer semantic structure than deterministic knowledge *** research on the embedding of UKG has only recently begun,Uncertain Knowledge Graph Embedding(UKGE)model has a certain effect on solving this ***,there are still unresolved *** the one hand,when reasoning the confidence of unseen relation facts,the introduced probabilistic soft logic cannot be used to combine multi-path and multi-step global information,leading to information *** the other hand,the existing UKG embedding model can only model symmetric relation facts,but the embedding problem of asymmetric relation facts has not be *** address the above issues,a Multiplex Uncertain Knowledge Graph Embedding(MUKGE)model is proposed in this ***,to combine multiple information and achieve more accurate results in confidence reasoning,the Uncertain ResourceRank(URR)reasoning algorithm is ***,the asymmetry in the UKG is *** embed asymmetric relation facts of UKG,a multi-relation embedding model is ***,experiments are carried out on different datasets via 4 tasks to verify the effectiveness of *** results of experiments demonstrate that MUKGE can obtain better overall performance than the baselines,and it helps advance the research on UKG embedding.

关键词： knowledge representation uncertain knowledge graph multi-relation embedding uncertain reasoning

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A modification to the Munk wind-driven ocean circulation theory

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Acta Oceanologica Sinica 2008年第3期27卷 4-10页

作者： zhang qinghua Qu Yuanyuan CHEN Shuiming Key Laboratory of Marine Science and Numerical Modeling of State Oceanic Administration First Institute of Oceanography State Oceanic Administration Qingdao 266061 China Department of Oceanography University of Hawaii at Manoa Honolulu HI96822 USA

In order to fulfill the no-slip condition at the western and eastern boundaries of the ocean basin, introduced ＂effective wind stress＂, which has much larger spatial variations towards the boundaries than in the ocean interior. The effective wind stress can thus be decomposed into spatially slow-varying and fast varying components. Careful scale analysis on the classical Munk winddriven ocean circulation theory, which consists of the interior Sverdrup flow and the western boundary current but of no eastern boundary current, shows that the wind stress curl appearing in the Sverdrup equation must have negligible spatial variations. In the present model the spatially slow-varying component of the wind stress appears in the Sverdrup equation, and the spatially fastvarying component becomes the forcing term of the boundary equations. As a result, in addition to the classical Munk solution the present model has an extra term at the western boundary which （Northern Hemisphere） increases the northward transport as well as the southward return transport, and has a term at the eastern boundary corresponding to the eastern boundary current.

关键词： Munk wind-driven ocean circulation theory,eastern boundary current,western boundary current effective wind stress

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