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A mitochondria-targeted H_(2)S-activatable fluorogenic probe for tracking hepatic ischemia-reperfusion injury

Chinese Chemical Letters 2024年第6期35卷 370-375页

作者： Bin Fang Jiaqi Yang limin Wang haoqin li Jiaying Guo Jiaxin Zhang Qingyuan Guo Bo Peng Kedi liu Miaomiao Xi Hua Bai li Fu lin li School of Materials Science and Engineering Northwestern Polytechnical UniversityXi’an 710072China Frontiers Science Center for Flexible Electronics Xi’an Institute of Flexible Electronics(IFE)and Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Key laboratory of Flexible Electronics of Zhejiang Province Ningbo Institute of Northwestern Polytechnical UniversityNingbo 315103China The Institute of Flexible Electronics(IFE Future Technologies)Xiamen UniversityXiamen 361005China Wuhan National Laboratory for Optoelectronics-Advanced Biomedical Imaging Facility Huazhong University of Science and TechnologyWuhan 430074China TANK Medicinal Biology Institute of Xi’an Xi’an 710032China

Hepatic ischemia-reperfusion injury(HIRI)is the cause of postoperative hepatic dysfunction and failure,and even *** an important biological effector molecule,hydrogen sulfide(H_(2)S)of mitochondria as a gasotransmitter that is usually used to protect against acute HIRI ***,the exact relationship between HIRI and mitochondrial H_(2)S remains tangled due to the lack of an effective analytical ***,we have fabricated a mitochondria-targeted H_(2)S-activatable fluorogenic probe(Mito-GW)to explore the stability of mitochondrial H_(2)S and track the changes of mitochondrial H_(2)S during the *** virtue of pyridinium electropositivity and its amphiphilicity,Mito-GW could accumulate in *** goes through an analyte-prompted immolation when reacts with H_(2)S,resulting in the releasing of the fluorophore(GW).Therefore,the extent of Mito-GW conversion to GW can be used to evaluate the changes of mitochondrial H_(2)S level in living cells and *** proof-of-principle,we have used MitoGW to demonstrate the mitochondria H_(2)S-levels increase and then decrease during HIRI in vitro and in *** research highlights the tremendous potential of Mito-GW as a mitochondrial H_(2)S fluorogenic probe in elucidating the pathogenesis of HIRI,providing a powerful tool for promoting future research on hepatology.

关键词： Mitochondria-targeted Bioimaging H2S-activatable Fluorogenic probe Hepatic ischemia-reperfusion injury(HIRI)

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Deciphering the role of mtHOin hepatic ischemia-reperfusion injury mechanisms with low-background super-resolution fluorogenic probe

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Science China Chemistry 2024年

作者： Bin Fang limin Wang haoqin li Jiaxin Zhang Yang Ding PanPan li Bo Peng Hua Bai lin li Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical University Institute of Flexible Electronics (IFE Future Technologies)Xiamen University

Hepatic ischemia-reperfusion injury（HIRI） is characterized by mitochondrial dysfunction and oxidative stress. Monitoring mitochondrial hydrogen peroxide（mtH2O2） levels in real-time through super-resolution imaging is crucial for elucidating its distribution in live cells and its mechanism of action during HIRI. However, low-background fluorogenic probes have been overlooked in the context of super-resolution imaging. In this study, we developed a low-background fluorogenic probe（MitoWG） with the potential for super-resolution morphology-correlated mitochondrial identification to track the fluctuates of mtH2O2in HIRI. Activation of the desirable fluorescence properties of the probe by mtH2O2was confirmed using structural illumination microscopy（SIM）, enabling high-quality mitochondrial imaging with exceptional specificity and *** in mt H2O2levels were successfully observed in both cellular and rat models of HIRI. Furthermore, we associated the decline in mitochondrial redox homeostasis with accelerated mtH2O2production during HIRI, which triggered mitophagy deficiency and led to cell death. In conclusion, Mito-WG possesses excellent photophysical and low-background properties for SIM imaging, making it a promising tool for mtH2O2tracking in HIRI research and clinical diagnosis.

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HX_(D)2型机车辅助设备节能设计分析与改进

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电力机车与城轨车辆 2024年第4期47卷 130-134页

作者：李浩勤中国铁路兰州局集团有限公司迎水桥机务段宁夏中卫751700

针对HX_(D)2型机车能耗问题,文章分析了机车节能方面的设计及其实际运用中存在的问题,基于机车辅助设备运行时长、运用环境温度、工作状态等影响因素,提出了节能设计改进方案,并从方案设计、验证及应用效果等方面进行了详细阐述。

关键词： HX_(D)2型机车节能辅助变流器牵引通风机改进

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池塘常规鱼高产高效混养试验

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科学养鱼 2007年第10期29卷 17-18页

作者：李好琴河南新乡市水产技术推广站 453003

2006年我们在河南新乡市卫滨区南高村渔场进行青、草、鲢、鳙、鲫鱼混养试验，利用放养多品种、大规格鱼进行混养生产出特大规格商品鱼，经过一年多的养殖，取得了较好较益，现把该试验总结如下：

关键词：混养试验常规鱼高产高效池塘试验总结新乡市多品种商品鱼

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泥鳅病害综合防治技术

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科学养鱼 2008年第12期30卷 49-50页

作者：李好琴河南新乡市水产技术推广站 453003

泥鳅具耐低氧、抗病力强的特性，但在人工养殖条件下，因水位浅、密度大、水质易恶化等原因，也常常会引发各种疾病，因此应坚持“生态预防、以防为主、防重于治”的原则，采取综合性防治措施，才能有效减少泥鳅病害的发生，提高养殖的... 详细信息

泥鳅具耐低氧、抗病力强的特性，但在人工养殖条件下，因水位浅、密度大、水质易恶化等原因，也常常会引发各种疾病，因此应坚持“生态预防、以防为主、防重于治”的原则，采取综合性防治措施，才能有效减少泥鳅病害的发生，提高养殖的成活率和养殖效益。

关键词：综合防治技术泥鳅病害养殖条件综合性防治生态预防养殖效益耐低氧

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Additives strategies to improving cycling stability of li metal batteries by modifying electrode electrolyte interphases

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Progress in Natural Science:Materials International 2024年第2期34卷 338-344页

作者： Yuan li Pengfei Huang Chunyu Cui Xiaoyuan Ma li Chen Zekun li linhai li Yuhong Tian School of Biological and Chemical Engineering Guangxi University of Science and Technology School of College of Chemistry and Chemical Engineering Hunan University Isky Future Energy Institute

li metal batteries（LMBs） have attracted much attention due to the ultra-high theoretical capacity of the li metal anode（LMA）.However,the uncontrollable dendrites growth and low coulombic efficiency hinder their practical ***,we explore 3,5-difluoropyridine（2F-BD） as a novel electrolyte additive to enable highperformance *** 2F-BD additive participates in and modifies the solvation structure of li ions by reducing the coordinated number of PF6-at the electrode surface,leading to the formation of a liF and li3N-rich solid electrolyte interphase（SEI）.The liF component increases the robustness of SEI and suppresses the formation of li dendrites,while the li3N component facilitates the transportation and reaction kinetics of li *** a result,the li‖li symmetric cell presents a stable cycling performance of up to 500 h at a current density of 1 mA *** coupling with liFePO4cathode,the obtained full cell achieves high specific capacities of 106.06 mA h g-1and 84.98 mA h g-1at 2.55 mA cm-2and 5.10 mA cm-2,respectively,and maintains a high capacity retention of84.0% after 1000 cycles at 0.13 mA cm-2,with an average cycling CE of 99.58%.

关键词： Electrolyte additive li dendrites li metal batteries liF and li3N-Rich electrode-electrolyte interphase liFePO4 cathode

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HXD2型电力机车按温度分时段节能研究与改造

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铁道机车与动车 2023年第11期 46-48,I0002页

作者：李浩勤中国铁路兰州局集团有限公司迎水桥机务段宁夏中卫755000

HXD2型大功率电力机车单耗比SS型4000系列电力机车能耗较高,根据环境温度变化情况,对降低HXD2型电力机车能耗做了深入研究,提出冬夏交互间歇节能模式改造的方法和技术,有效降低了机车的单耗,提升了机务段能耗管理水平,降低了企业的生产... 详细信息

HXD2型大功率电力机车单耗比SS型4000系列电力机车能耗较高,根据环境温度变化情况,对降低HXD2型电力机车能耗做了深入研究,提出冬夏交互间歇节能模式改造的方法和技术,有效降低了机车的单耗,提升了机务段能耗管理水平,降低了企业的生产经营成本。

关键词： HXD2型电力机车节能研究

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Leaching kinetics of fluorine during the aluminum removal from spent li-ion battery cathode materials

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Journal of Environmental Sciences 2024年第4期138卷 312-325页

作者： Shengjie li Jianxin Zhu Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

The high content of aluminum(Al)impurity in the recycled cathode powder seriously affects the extraction efficiency of Nickel,Cobalt,Manganese,and lithium resources and the actual commercial value of recycled materials,so Al removal is crucially important to conform to the industrial standard of spent li-ion battery cathode *** this work,we systematically investigated the leaching process and optimum conditions associated with Al removal from the cathode powder materials collected in a wet cathode-powder peeling and recycling production line of spent li-ion batteries(liBs).Moreover,we specifically studied the leaching of fluorine(F)synergistically happened along with the removal process of Al,which was not concerned about in other studies,but one of the key factors affecting pollution prevention in the recovery *** mechanism of the whole process including the leaching of Al and F from the cathode powder was indicated by using NMR,FTIR,and XPS,and a defluoridation process was preliminarily investigated in this *** leaching kinetics of Al could be successfully described by the shrinking core model,controlled by the diffusion process and the activation energy was 11.14 kJ/***,the leaching of F was attributed to the dissolution of liPF6and decomposition of PVDF,and the kinetics associated was described by Avrami *** interaction of Al and F is advantageous to realize the defluoridation to some *** is expected that our investigation will provide theoretical support for the large-scale recycling of spent liBs.

关键词： Al removal F leaching Cathode powder Heating alkali leaching Leaching kinetics

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Valence Bands Convergence in p-Type CoSb_(3) through Electronegative Fluorine Filling

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Chinese Physics Letters 2024年第7期41卷 87-94页

作者：黄写格李家良马浩钦李昌隆刘天乐段波翟鹏程李国栋 Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics Wuhan University of TechnologyWuhan 430070China School of Civil Engineering&Architecture Wuhan Polytechnic UniversityWuhan 430023China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Band convergence is considered to be a strategy with clear benefits for thermoelectric performance,generally favoring the co-optimization of conductivity and Seebeck coefficients,and the conventional means include elemental filling to regulate the ***,the influence of the most electronegative fluorine on the CoSb_(3) band remains *** carry out density-functional-theory calculations and show that the valence band maximum gradually shifts downward with the increase of fluorine filling,lastly the valence band maximum converges to the highly degenerated secondary valence bands in fluorine-filled skutterudites.

关键词： valence Convergence bands

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SEI/dead li-turning capacity loss for high-performance anode-free solid-state lithium batteries

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Journal of Energy Chemistry 2024年第9期96卷 145-152页

作者： Qianwen Yin Tianyu li Hongzhang Zhang Guiming Zhong Xiaofei Yang Xianfeng li Division of Energy Storage Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Long-Duration and Large-Scale Energy Storage Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Laboratory of Advanced Spectro-Electrochemistry and lithium-Ion Batteries Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

Anode-free solid-state lithium metal batteries(AF-SSLBs)have the potential to deliver higher energy density and improved safety beyond lithium-metal ***,the unclear mechanism for the fast capacity decay in AF-SSLBs,either determined by dead li or solid electrolyte interface(SEI),limits the proposal of effective strategies to prolong cycling *** clarify the underlying mechanism,herein,the evolution of SEI and dead li is quantitatively analyzed by a solid-state nuclear magnetic resonance(ss-NMR)technology in a typical liPF6-based polymer *** results show that the initial capacity loss is attributed to the formation of SEI,while the dead li dominates the following capacity loss and the growth rate is 0.141 mA h cm^(−2)cycle−*** reduce the active li loss,the combination of inorganic-rich SEI and self-healing electrostatic shield effect is proposed to improve the reversibility of li deposition/dissolution behavior,which reduces the capacity loss rate for the initial SEI and following dead li generation by 2.3 and 20.1 folds,*** a result,the initial Coulombic efficiency(ICE)and stable CE increase by 15.1%and 15.3%in li-Cu cells,which guides the rational design of high-performance AF-SSLBs.

关键词： Solid-state lithium batteries Solid-state NMR Anode-free SEI Dead li

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