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Enhanced structural stability and durability in lithium-rich manganese-based oxide via surface double-coupling engineering

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Journal of Energy Chemistry 2024年第11期 274-283页

作者： Jiayu Zhao Yuefeng Su Jinyang Dong Xi wang yun Lu Ning Li qing Huang Jianan Hao Yujia Wu Bin Zhang qiongqiong qi Feng Wu Lai Chen School of Materials Science and Engineering Beijing Key Laboratory of Environmental Science and Engineering Beijing Institute of Technology Chongqing Innovation Center Beijing Institute of Technology Yibin Libode New Materials Co. Ltd. Initial Energy Science & Technology (Xiamen) Co. Ltd

Lithium-rich manganese-based oxides（LRMOs） exhibit high theoretical energy densities, making them a prominent class of cathode materials for lithium-ion batteries. However, the performance of these layered cathodes often declines because of capacity fading during cycling. This decline is primarily attributed to anisotropic lattice strain and oxygen release from cathode surfaces. Given notable structural transformations, complex redox reactions, and detrimental interface side reactions in LRMOs, the development of a single modification approach that addresses bulk and surface issues is challenging. Therefore,this study introduces a surface double-coupling engineering strategy that mitigates bulk strain and reduces surface side reactions. The internal spinel-like phase coating layer, featuring threedimensional（3D） lithium-ion diffusion channels, effectively blocks oxygen release from the cathode surface and mitigates lattice strain. In addition, the external Li3PO4coating layer, noted for its superior corrosion resistance, enhances the interfacial lithium transport and inhibits the dissolution of surface transition metals. Notably, the spinel phase, as excellent interlayer, securely anchors Li3PO4to the bulk lattice and suppresses oxygen release from lattices. Consequently, these modifications considerably boost structural stability and durability, achieving an impressive capacity retention of 83.4% and a minimal voltage decay of 1.49 m V per cycle after 150 cycles at 1 C. These findings provide crucial mechanistic insights into the role of surface modifications and guide the development of high-capacity cathodes with enhanced cyclability.

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含裂纹油气管道CFRP修复数值研究

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石油化工设备 2024年第2期53卷 23-31页

作者：王琪周云陈岑江苏省特种设备安全监督检验研究院江苏南京210036

裂纹缺陷引发的管道强度下降是埋地油气管道的主要事故原因之一,而高强度、高模量、耐腐蚀的碳纤维增强树脂基复合材料(CFRP)可以很好地缠绕修复缺陷管段。针对有/无CFRP修复20钢含矩形裂纹缺陷管道,采用ANSYS有限元软件模拟内压载荷作... 详细信息

裂纹缺陷引发的管道强度下降是埋地油气管道的主要事故原因之一,而高强度、高模量、耐腐蚀的碳纤维增强树脂基复合材料(CFRP)可以很好地缠绕修复缺陷管段。针对有/无CFRP修复20钢含矩形裂纹缺陷管道,采用ANSYS有限元软件模拟内压载荷作用下含裂纹管道修复前后的响应过程,分析了裂纹角度、裂纹长度、裂纹深度、修复长度及修复厚度等参数对含裂纹管道强度的影响规律。研究表明,含裂纹管道的最大Mises等效应力随着裂纹与管道轴向夹角的减小、裂纹长度和深度的增大而增大,内压的增大加剧了缺陷参数对管道强度的影响程度。在工程中要严格控制裂纹在深度和长度方向的扩展,在内部减压后再维修含裂纹管道。CFRP修复厚度是修复后含裂纹管道强度的主要影响因素,随着修复厚度一定程度的增大,含裂纹管道最大Mises等效应力呈线性下降。

关键词：管道裂纹复合材料修复数值分析

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Enhanced degradation of florfenicol by microscale SiC/Fe:Dechlorination via hydrogenolysis

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Chinese Chemical Letters 2024年第7期35卷 218-221页

作者： yun-Fei Zhang Chun-Hui Zhang Jian-Hui Xu Lei Li Dan Li Jin-Hong Fan Jiale Gao Xin Quan qi Wu Yue Zou Yan-Ling Liu Dongguan University of Technology School of Environment and Civil EngineeringDongguan 523830China State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and EngineeringTongji UniversityShanghai 200092China

Herein,the degradation of florfenicol(FLO)over zero-valent iron(ZVI)enhanced by SiC was systematically *** was found that 5 g/L of ZVI/SiC(1:3)at pH 3.0 could completely degrade 20 mg/L of FLO within 1 h,with a Kobsvalue of 0.0873 min^(-1),12.5 times greater than that of pure ZVI(0.0069 min^(-1)).Vibrating sample magnetometer(VSM)characterizations revealed that the use of SiC supporter reduces the magnetic intensity of ZVI,which mitigates iron particle agglomeration,increases Brunauer-Emmett-Teller(BET)surface area,and enhances FLO degradation ***,ZVI/SiC exhibits a much lower hydrogen evolution potential(HEP)and significantly higher corrosion currents compared to pure *** was proposed to undergo degradation via reductive dechlorination,involving a hydrogenolysis mechanism that entails the cleavage of theσ*** study provides new insights into the reduction hydrogenation mechanism of ZVI.

关键词： Zero-valent iron Silicon carbide Reductive dechlorination Hydrogenolysis Florfenicol

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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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Cultivating the uncultured:Harnessing the“sandwich agar plate”approach to isolate heme-dependent bacteria from marine sediment

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mLife 2024年第1期3卷 143-155页

作者： Jing Zhang qi-yun Liang Da-Shuai Mu Fengbai Lian Ya Gong Mengqi Ye Guan-Jun Chen Yuqi Ye Zong-Jun Du State Key Laboratory of Microbial Techlogy Insttute of Micrbial TchnoogyShandong UniversityQingdaoChina Marine College Shandong UniverstyWeihaiChina Shandong University-Weihai Research Institute of Industrial Technology WeihaiChina

In the classical microbial isolation technique,the isolation process inevitably destroys all microbial interactions and thus makes it difficult to culture the many microorganisms that rely on these interactions for *** this study,we designed a simple coculture technique named the“sandwich agar plate method,”which maintains microbial interactions throughout the isolation and pure culture *** total yield of uncultured species in sandwich agar plates based on eight helper strains was almost 10-fold that of the control *** uncultured species displayed commensal *** study found that heme was the growth-promoting factor of some marine commensal *** genomic analysis revealed that heme auxotrophies were common in various biotopes and prevalent in many uncultured microbial ***,our study supported that the survival strategies of heme auxotrophy in different habitats varied *** findings highlight that cocultivation based on the“sandwich agar plate method”could be developed and used to isolate more uncultured bacteria.

关键词： cultivation growth factors heme sandwich agar plate uncultured bacteria

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FDX1 as a novel biomarker and treatment target for stomach adenocarcinoma

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1803-1824页

作者： Xian-Ze Xie Lei Zuo Wei Huang qiao-Mei Fan Ya-yun Weng Wen-Dong Yao Jia-Li Jiang Jia-qi Jin Department of Pharmacy The First Affiliated Hospital of Zhejiang Chinese Medical University(Zhejiang Provincial Hospital of Chinese Medicine)Hangzhou 310018Zhejiang ProvinceChina Anhui Province Huainan City Shou County Agricultural Machinery Affairs Management Center Huainan 232200Anhui ProvinceChina

BACKGROUND Stomach adenocarcinoma(STAD)is one of the main reasons for cancer-related deaths *** investigation aimed to define the connection between STAD and Cuproptosis-related genes(CRGs).Cuproptosis is a newly identified form of mitochondrial cell death triggered by *** To explore the identification of potential biomarkers for STAD disease based on *** A predictive model using Gene Ontology(GO),Least Absolute Shrinkage and Selection Operator(LASSO),Kyoto Encyclopedia of Genes and Genomes(KEGG),Gene Set Variation Analysis(GSVA),and Gene Set Enrichment Analysis analyzed gene interconnections,focusing on 3 copper-related genes and their expression in The Cancer Genome *** for mRNA-miRNA and mRNA-transcription factor interactions were *** prognostic significance of CRG scores was evaluated using time-receiver operating characteristic,Kaplan-Meier curves,and COX regression *** was conducted with datasets GSE26942,GSE54129,and *** of copper-related differ-entially expressed genes was also analyzed in various human tissues and gastric cancer subpopulations using the human protein *** Three significant genes(FDX1,LIAS,MTF1)were identified and selected via LASSO analysis to predict and classify individuals with STAD into high and low CRG score *** genes were down-regulated in both risk *** and KEGG analyses highlighted their involvement mainly in the electron transport *** validating their differential expression,FDX1 emerged as the most accurate diagnostic marker for gastric ***,the RCircos package localized FDX1 on chromosome *** Our study revealed that FDX1 could be a potential biomarker and treatment target for gastric malignancy,providing new ideas for further scientific research.

关键词： Stomach adenocarcinoma disease Copper death FDX1 prognostic biomarkers Cuproptosis-related genes

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考虑通信时滞的采样控制系统稳定性分析

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中南大学学报（自然科学版） 2024年第3期55卷 963-972页

作者：陈刚刘博林陈云邓琪王震湖南工业大学电气与信息工程学院湖南株洲412007 湖南工业大学轨道交通学院湖南株洲412007 东北大学流程工业综合自动化国家重点实验室辽宁沈阳110819

为了研究带有通信时滞的采样控制系统的稳定性问题,首先,考虑采样区间的采样特性,构造一种依赖于采样区间最值的闭环泛函,在这种泛函中,泛函相关的矩阵不需要满足正定定义,且矩阵随着采样区间最值的变化而变化;然后,利用采样控制系统的... 详细信息

为了研究带有通信时滞的采样控制系统的稳定性问题,首先,考虑采样区间的采样特性,构造一种依赖于采样区间最值的闭环泛函,在这种泛函中,泛函相关的矩阵不需要满足正定定义,且矩阵随着采样区间最值的变化而变化;然后,利用采样控制系统的动态信息以及定积分的分部积分法,提出一些含自由矩阵的零等式;再次,结合广义自由矩阵积分不等式,推导出采样控制系统带有通信时滞和无通信时滞的2个稳定性判据;最后,通过数值和实际仿真验证采样区间最值的闭环泛函方法的可靠性。研究结果表明:基于采样区间最值的双边闭环泛函能够使采样控制系统稳定性判断更优且更有效。

关键词：采样控制系统稳定性分析时滞 Lyapunov-Krasovskii泛函闭环泛函

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Aggregation-induced emission-based covalent-organic framework fluorescent probes for clinical detection of aluminum and daily prevention of Alzheimer's disease by naked-eye

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Science China Chemistry 2024年

作者： yun Zhao Enpeng Xi Ziwei wang qi Ding Kangning Liu Jinxing Zhu Xuhan Wu Yiling Xie Fuming Yang Nan Gao Hanjun Sun Yajie Yang Ye Yuan Guangshan Zhu Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education and Faculty of Chemistry Northeast Normal University School of Chemistry and Materials Science Jiangsu Key Laboratory of New Power Batteries Jiangsu Collaborative Innovation Center of Biomedical Functional Materials Nanjing Normal University Key Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering Jilin University

Alzheimer's disease(AD) is a neurodegenerative disease and a major threat to human health worldwide. The association between aluminum exposure and AD has been widely reported. Owing to the ubiquitous presence of aluminum in daily life, aluminum exposure can easily occur whenever and wherever possible. Thus, a rapid and sensitive reagent for detecting aluminum and assist in AD daily prevention for potential AD patient population is extremely needed. However, existing aluminum detection methods rely on precise instruments, which are impractical for household use. Herein, a series of aggregation-induced emission-based covalent-organic framework(AIE-COF) fluorescent probes has been designed with progressively tuned sizes and screened for aluminum detection. Among them, COF-N2 was found to have the highest response towards aluminum specifically, with a fluorescence intensity change of 19.14 times before and after chelation, which could determine the aluminum concentration by naked eye. Then, the molecular mechanism of COF-N2 fluorescence changes was explained and COF-N2 was used for both diagnose the aluminum distribution in various organs of APP/PS1 transgenic mice and quickly determine the aluminum content in daily necessities. The use of AIE-COF probes for aluminum detection provides a promising avenue for developing aluminum related AD clinical diagnosis and daily prevention tools.

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Spatiotemporal drivers of urban water pollution:Assessment of 102 cities across the Yangtze River Basin

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Environmental Science and Ecotechnology 2024年第4期20卷 300-314页

作者： Yi-Lin Zhao Han-Jun Sun Xiao-Danwang Jie Ding Mei-yun Lu Ji-Wei Pang Da-Peng Zhou Ming Liang Nan-qi Ren Shan-Shan Yang State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China China Energy Conservation and Environmental Protection Group Beijing 100082China China Energy Conservation and Environmental Protection Group CECEP Digital Technology Co.Ltd.Beijing 100089China China Railway Engineering Design and Consulting Group Co. Ltd.Beijing 100055China

Effective management of large basins necessitates pinpointing the spatial and temporal drivers of primary index exceedances and urban risk factors,offering crucial insights for basin ***,comprehensive examinations of multiple pollutants within the Yangtze River Basin remain *** we introduce a pollution inventory for urban clusters surrounding the Yangtze River Basin,analyzing water quality data from 102 cities during *** assessed the exceedance rates for six pivotal indicators:dissolved oxygen(DO),ammonia nitrogen(NH_(3)-N),chemical oxygen demand(COD),biochemical oxygen demand(BOD),total phosphorus(TP),and the permanganate index(COD_(Mn))for each *** random forest regression and SHapley Additive exPlanations(SHAP)analyses,we identified the spatiotemporal factors influencing these key *** results highlight agricultural activities as the primary contributors to the exceedance of all six indicators,thus pinpointing them as the leading pollution source in the ***,forest coverage,livestock farming,chemical and pharmaceutical sectors,along with meteorological elements like precipitation and temperature,significantly impacted various indicators'***,we delineate five core urban risk components through principal component analysis,which are(1)anthropogenic and industrial activities,(2)agricultural practices and forest extent,(3)climatic variables,(4)livestock rearing,and(5)principal polluting *** cities were subsequently evaluated and categorized based on these risk components,incorporating policy interventions and administrative performance within each *** comprehensive analysis advocates for a customized strategy in addressing the discerned risk factors,especially for cities presenting elevated risk levels.

关键词： Basin management Primary indices Urban risk factors Yangtze river basin Local conditions

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残障服务的供需困境及其破解策略——基于制度逻辑的视角

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吉林大学社会科学学报 2024年第3期64卷 101-115,237页

作者：亓彩云山东大学哲学与社会发展学院济南250100

我国“完善残疾人关爱服务体系”的工作成果显著,但始终未达到供需匹配的理想状态。既有研究多关注于资源环境和技术环境以及单一规制性要素的不足,忽视了复杂制度系统中不同制度要素及其结合的力量。基于实地调研,文章以新制度主义的... 详细信息

我国“完善残疾人关爱服务体系”的工作成果显著,但始终未达到供需匹配的理想状态。既有研究多关注于资源环境和技术环境以及单一规制性要素的不足,忽视了复杂制度系统中不同制度要素及其结合的力量。基于实地调研,文章以新制度主义的相关理论为切入点,从制度要素冲突与行动脱耦两方面对残障服务供需困境产生的原因进行深入研究。研究发现,规制性制度要素、规范性制度要素与文化-认知性制度要素的一致性是保证残障服务场域有效运转的前提。实践中,政府强有力的规制性要素提供了充分的合法性支持并统领着制度运行,但规范性要素内部行政逻辑、市场逻辑和助残社会规范的矛盾,文化-认知性要素内部消极残障观和积极残障观的矛盾以及两者与规制性要素的冲突,构成了残障服务供需困境的内在基础。面对要素内部及要素间的冲突,行动者采取脱耦行动策略,导致服务供需的矛盾。残障服务供需困境的破解策略包括:形成助残社会规范,建立积极的残障认知,改革规制性运作逻辑,以实现要素内部统一与要素间的耦合。

关键词：残障服务供需困境制度要素冲突行动脱耦

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