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Homologous CoS2 interface with directed electron transfer and strong chloridion repulsion for efficient seawater oxidation

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Science China Chemistry 2025年

作者： yuan Tian Jiang-Bo chen Jie Ying Ge Tian yu-Xuan Xiao Yi Lu Si-Ming Wu Wei Geng Ling Shen Xiao-yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and School of Materials Science and Engineering and Shenzhen Research Institute & Laoshan Laboratory Wuhan University of Technology School of Chemical Engineering and Technology Sun Yat-Sen University National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu Laboratory

Seawater electrolysis is a highly promising method to produce high energy density hydrogen,especially in dry areas that have scarce freshwater ***,application of seawater electrolysis is confronted by two major problems associated with catalysts employed for the anodic oxygen evolution reaction （OER） including the competitive hypochlorite evolution reaction（HCER） and strong chloridion （Cl–） triggered *** studies aimed at overcoming these problems,a facile method has been developed to synthesize a homologous CoS2heterojunction as an OER *** to a difference in work functions at the interface and increased electron density,this material has directed electron transfer and strong chloridion repulsion properties,*** have shown that CoS2achieves low overpotentials of 289 and 322 mV at 10 mA cm-2current density in respective alkaline （1 M KOH） and alkaline simulated seawater ***,the outstanding stability of CoS2is reflected in a negligible decline in activity during promotion of the OER for 100 *** of density functional theory calculations reveal that the homologous CoS2heterojunction promotes directed electron transport for optimizing adsorption/desorption of reactive species and heightens the Cl-adsorption energy for strongly repulsing Cl-,phenomena that enhance OER performance in alkaline simulated seawater.

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淹水土壤中4个耐水湿树种的重金属积累能力

林业科学研究 2018年第3期31卷 29-36页

作者：李晓刚曹旖旎蔡泽宇张建锋陈光才中国林业科学研究院亚热带林业研究所浙江杭州311400

[目的]比较研究4个耐水湿树种沙柳、杞柳‘微山湖’、水紫树和墨西哥落羽杉在浙江杭州一处重金属污染稻田中的生长情况和重金属积累能力,为重金属污染土地的树木修复提供依据。[方法]实地采样,测定树木各项生长指标,用电感耦合等离子体... 详细信息

[目的]比较研究4个耐水湿树种沙柳、杞柳‘微山湖’、水紫树和墨西哥落羽杉在浙江杭州一处重金属污染稻田中的生长情况和重金属积累能力,为重金属污染土地的树木修复提供依据。[方法]实地采样,测定树木各项生长指标,用电感耦合等离子体质谱仪和电感耦合等离子体发射光谱仪测定土样和树木不同部位中重金属含量,分析比较不同树种的重金属耐受力和积累能力。[结果]表明:在土壤Cd、Zn、Pb、Cu不同污染程度下,4个树种能够维持生长,表现出较强的适应性。不同树种对重金属的积累能力存在差异,杞柳‘微山湖’对Cd、Zn、Cu的积累量最大,分别为462.58、4 341.32、261.86 mg·株-1,沙柳对Pb、Mn积累量最大,分别为106.97、577.61 mg·株-1。在当地栽植密度下,经过6 a的生长,杞柳‘微山湖’对Cd、Zn、Pb、Cu、Mn迁移量分别达到3.70、34.73、0.66、2.10、4.23kg·hm-2,沙柳对Zn迁移量达到22.26 kg·hm-2,水紫树在4 a内对Mn迁移量达到3.80 kg·hm-2。[结论]沙柳和杞柳‘微山湖’对Cd和Zn具有较强的积累能力,水紫树和墨西哥落羽杉分别对Mn和Cu污染的淹水土地具有修复潜力。

关键词：树种土壤重金属积累量修复

Asymmetric interfacial engineering regulated charge distribution on Ru/Ni-N-C sites for efficient hydrogen evolution reaction in alkaline and seawater electrolytes

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Science China Chemistry 2025年

作者： Rui yu Xi Cao chengyang Zhu Qingqing chen Ziyi Yan Binbin Jiang Junjie Mao Xianwen Wei Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes College of Chemistry and Materials ScienceAnhui Normal University Anhui Provincial Key Laboratory of Advanced Catalysis and Energy Materials School of Chemistry and Chemical Engineering Anqing Normal University School of Chemistry and Chemical Engineering Anhui University of Technology

Developing highly efficient and cost-effective electrocatalysts for hydrogen evolution reaction（HER） is grandly challenging in alkaline and alkaline seawater electrolytes. Herein, the asymmetric interfacial active sites with Ru nanoparticles and Ni single atoms in Ru/Ni-N-C were designed through a solvothermal-pyrolysis process. Constructing highly asymmetric interfacial active sites with a strong electron delocalization effect significantly improves HER kinetics. As expected, Ru/Ni-N-C requires low overpotentials with around 20 mV at 10 mA cm-2and robust durability over 48 h in alkaline and alkaline seawater *** at 200 mA cm-2, the overpotentials are close to 100 mV in both above electrolytes for Ru/Ni-N-C. Density function theory calculation results suggest that the asymmetric interface between Ru nanoparticle and Ni-N-C could accelerate the dissociation of water molecules and modulate the hydrogen species, consequently improving the HER performances. This work opens a unique approach for constructing advanced materials for energy conversion.

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HY/MCM-41包覆型复合分子筛的合成及其在二甲酚加氢脱甲基反应中的催化性能研究

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现代化工 2021年第1期41卷 179-184,190页

作者：徐亚津陶宁冯宇辰吕建华刘继东河北工业大学化工学院天津300130

用HY沸石溶解的硅铝合成出HY/MCM-41包覆型复合分子筛。考察了HY添加量、体系p H、晶化时间对其合成的影响。利用XRD、SEM、N_(2)吸附-脱附、NH_(3)-TPD等对样品进行表征。以3,4-二甲酚为模型化合物,对负载TiO_(2)的HY/MCM-41催化剂加... 详细信息

用HY沸石溶解的硅铝合成出HY/MCM-41包覆型复合分子筛。考察了HY添加量、体系p H、晶化时间对其合成的影响。利用XRD、SEM、N_(2)吸附-脱附、NH_(3)-TPD等对样品进行表征。以3,4-二甲酚为模型化合物,对负载TiO_(2)的HY/MCM-41催化剂加氢脱甲基性能进行评价。结果表明,TiO_(2)/YM-c复合催化剂特殊的孔道结构和酸性质的协同作用在3,4-二甲酚加氢脱甲基反应中表现出较好的催化性能。3,4-二甲酚转化率及苯酚和间甲酚的选择性分别为50.82%、62.17%和36.32%。

关键词： 3,4-二甲酚加氢复合材料包覆型

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飞机全机结构有限元建模关键技术研究

装备制造技术 2013年第4期 1-4页

作者：冯宇晨郭建忠海军装备部陕西西安710054

在飞机结构设计中,已经广泛采用有限元作为设计工具。在飞机结构布局设计阶段,快速的建立满足分析精度要求的全机有限元模型,能大大提高结构设计的质量和效率。但从结构数模到有限元网格的划分要经历复杂的过程,提高和简化有限元分析的... 详细信息

在飞机结构设计中,已经广泛采用有限元作为设计工具。在飞机结构布局设计阶段,快速的建立满足分析精度要求的全机有限元模型,能大大提高结构设计的质量和效率。但从结构数模到有限元网格的划分要经历复杂的过程,提高和简化有限元分析的前处理非常必要。主要研究了在飞机结构布局设计阶段全机结构有限元建模的关键技术,并结合LMS *** Structures举例说明。根据探讨的有限元建模关键技术,可以建立符合飞机结构初步分析阶段精度要求的有限元模型。

关键词：飞机结构设计全机结构有限元模型

融合物联网技术的动态GRNN模型的污水处理液压系统故障检测研究

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液压与气动 2020年第11期44卷 120-126页

作者：孙洁许清河于凤臣朱杰张瑞新华北理工大学电气工程学院河北唐山063210 南堡开发区城市建设管理局河北唐山063305 唐山城市排水有限公司西郊污水处理二厂河北唐山063305 柯美瑞(唐山)环保科技有限公司河北唐山063000

液压系统是污水处理中关键部分,液压设备的运行安全和状态监测是污水处理中的重要内容。提出一种融合物联网技术的动态GRNN模型的故障诊断方法,以物联网的智能控制为依托,利用无线传感网络技术对分散的液压设备的各数据参数进行实时测... 详细信息

液压系统是污水处理中关键部分,液压设备的运行安全和状态监测是污水处理中的重要内容。提出一种融合物联网技术的动态GRNN模型的故障诊断方法,以物联网的智能控制为依托,利用无线传感网络技术对分散的液压设备的各数据参数进行实时测控及远程共享,将采集到的故障信号输入GRNN模型故障观测器,计算检测阈值,通过实验仿真准确的诊断出系统故障。实验表明,该方法能有效的应用在污水处理液压系统中,保证系统正常运行,降低设备故障率,提高生产效率。

关键词：液压系统物联网无线传感网络动态GRNN模型故障诊断

Comparative analysis of empirical and deep learning models for ionospheric sporadic E layer prediction

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Earth and Planetary Physics 2025年第1期9卷 10-19页

作者： BingKun yu PengHao Tian XiangHui Xue Christopher JScott HaiLun Ye JianFei Wu Wen Yi TingDi chen XianKang Dou Institute of Deep Space Sciences Deep Space Exploration LaboratoryHefei 230088China CAS Key Laboratory of Geospace Environment School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Hefei National Laboratory University of Science and Technology of ChinaHefei 230088China Department of Meteorology University of ReadingReading RG66BBUK

Sporadic E(Es)layers in the ionosphere are characterized by intense plasma irregularities in the E region at altitudes of 90-130 *** they can significantly influence radio communications and navigation systems,accurate forecasting of Es layers is crucial for ensuring the precision and dependability of navigation satellite *** this study,we present Es predictions made by an empirical model and by a deep learning model,and analyze their differences comprehensively by comparing the model predictions to satellite RO measurements and ground-based ionosonde *** deep learning model exhibited significantly better performance,as indicated by its high coefficient of correlation(r=0.87)with RO observations and predictions,than did the empirical model(r=0.53).This study highlights the importance of integrating artificial intelligence technology into ionosphere modelling generally,and into predicting Es layer occurrences and characteristics,in particular.

关键词： ionospheric sporadic E layer radio occultation ionosondes numerical model deep learning model artificial intelligence

Toward understanding the role of genomic repeat elements in neurodegenerative diseases

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Neural Regeneration Research 2025年第3期20卷 646-659页

作者： Zhengyu An Aidi Jiang Jingqi chen Institute of Science and Technology for Brain-Inspired Intelligence Fudan UniversityShanghaiChina MOE Frontiers Center for Brain Science Fudan UniversityShanghaiChina MOE Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence Fudan UniversityShanghaiChina Zhangjiang Fudan International Innovation Center ShanghaiChina

Neurodegenerative diseases cause great medical and economic burdens for both patients and society;however, the complex molecular mechanisms thereof are not yet well understood. With the development of high-coverage sequencing technology, researchers have started to notice that genomic repeat regions, previously neglected in search of disease culprits, are active contributors to multiple neurodegenerative diseases. In this review, we describe the association between repeat element variants and multiple degenerative diseases through genome-wide association studies and targeted sequencing. We discuss the identification of disease-relevant repeat element variants, further powered by the advancement of long-read sequencing technologies and their related tools, and summarize recent findings in the molecular mechanisms of repeat element variants in brain degeneration, such as those causing transcriptional silencing or RNA-mediated gain of toxic function. Furthermore, we describe how in silico predictions using innovative computational models, such as deep learning language models, could enhance and accelerate our understanding of the functional impact of repeat element variants. Finally, we discuss future directions to advance current findings for a better understanding of neurodegenerative diseases and the clinical applications of genomic repeat elements.

关键词： Alzheimer's disease ataxia deep learning long-read sequencing neurodegeneration neurodegenerative diseases Parkinson's disease repeat element structural variant

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河西走廊西段及邻区早白垩世盆地的重新厘定

石油学报 2004年第6期25卷 18-22页

作者：何光玉杨树锋陈汉林肖安成程晓敢浙江大学理学院地球科学系浙江杭州310027

对河西走廊西段及邻区的地震剖面进行了解释 ,结合钻井资料对其早白垩世时期的沉积与构造特征进行了系统分析 ,对盆地的原型进行了新的厘定。在早白垩世时期 ,该区中部并未发育宽台山黑山隆起与天泉寺合黎山隆起 ,原酒西盆地与花海... 详细信息

对河西走廊西段及邻区的地震剖面进行了解释 ,结合钻井资料对其早白垩世时期的沉积与构造特征进行了系统分析 ,对盆地的原型进行了新的厘定。在早白垩世时期 ,该区中部并未发育宽台山黑山隆起与天泉寺合黎山隆起 ,原酒西盆地与花海、酒东和金塔盆地应同属统一的酒泉盆地。其中 ,原花海、酒西盆地应同属统一的酒西坳陷 ,内含青西、赤金、石大花海 3个凹陷 ,后者又可以进一步分为花海次凹、石北次凹和大红圈次凹。原金塔、酒东盆地应同属统一的酒东坳陷 ,内含金塔、盐池、营尔和马营 4个凹陷。 2个大坳陷间以嘉峪关隆起作为分隔 ,而原始盆地的南部边界应位于现今边界以南 3 0～ 5 0km处。

关键词：酒泉盆地盆地原型早白垩世河西走廊构造特征