期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到5篇文章
< 1 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Synergistic confinement and alloying effects in Pd-based catalysts for efficient and stable CO2reduction 认领 引用
1
作者 Yujun Cheng Xi Li +6 位作者 Ziyi Gao Yao Yao Chuan Long Jiasi Zuo Haikun Xu Qi Liu Xiaoqing Chen 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第7期1-11,I0002,共11页
Palladium(Pd)has long been constrained as a potential catalyst for CO2reduction reactions(CO2RR)due to significant deactivation caused by strongly adsorbed carbonaceous intermediates on its surface,severely limi... Palladium(Pd)has long been constrained as a potential catalyst for CO2reduction reactions(CO2RR)due to significant deactivation caused by strongly adsorbed carbonaceous intermediates on its surface,severely limiting its catalytic activity and stability.To address this critical bottleneck,this study proposes and implements a synergistic regulation strategy combining alloying and spatial confinement effects.This approach designs a composite catalyst by encapsulating boron-silver co-doped palladium alloy nanoparticles(B-Ag4Pd6)within hollow porous resin carbon spheres(HPRCS).In an H-cell,this catalyst achieved a CO Faradaic efficiency of 96.19%at jCO=24.8 mA/cm2 and maintained stable performance for 80 h.Even under flow cell conditions,it sustained 91.23%CO selectivity at jCO=157.86 mA/cm2 over 60 h.Experimental comparisons confirmed the significant promoting effect of spatial confinement on CO2RR.Furthermore,in situ ATR-FTIR spectroscopy and density functional theory(DFT)calculations reveal that B/Ag alloying downshifts the Pd d-band center,optimizes(*)^COOH and(*)^CO adsorption,and the confined Hmicroenvironment accelerates CO formation while suppressing hydrogen evolution.This study not only successfully addressed the issue of carbon intermediate poisoning on Pd surfaces through alloying and microenvironmental regulation,but also provides novel insights and approaches for designing high-performance CO2RR catalysts that integrate electronic structure control with microenvironmental engineering. 展开更多
关键词 CO2electroreduction Pd‑based alloy catalysts Confinement effect Interfacial microenvironment engineering
暂未订购 下载PDF
Hydrodynamic Characteristics of an Underwater Manipulator in Pulsating Flow 认领 引用
2
作者 Xia Liu Derong Duan +2 位作者 Xiaoya Zhang Yujun Cheng Hui Zhang 《哈尔滨工程大学学报（英文版）》 CSCD 2025年第3期503-517,共15页
Pulsating flow is a common condition for under water manipulators in Bohai Bay.This study aimed to investigate the effects of pulsation frequency and amplitude on the hydrodynamic characteristics of an underwater mani... Pulsating flow is a common condition for under water manipulators in Bohai Bay.This study aimed to investigate the effects of pulsation frequency and amplitude on the hydrodynamic characteristics of an underwater manipulator with different postures using the user-defined function (UDF) method. The lift coefficient (CL), drag coefficient (CD), and vortex shedding of the underwater manipulator in single-and dualarm forms were obtained. Results indicated that the maximum increase in the lift and drag coefficients subjected to the pulsation parameters was 24.45%and 28%, respectively, when the fluid flowed past a single arm. Compared with the single arm, the lift and drag coefficients of the arms were higher than those of the single arm when arm 2 was located upstream. Additionally, the pulsation frequency had no obvious effect on the manipulator, but the CL and CD of arm 2 showed an obvious increasing trend with an increase in pulsation amplitude. Meanwhile, when arm 2 was located downstream, the CL and CD of arm 2 were reduced by 16.38%and 1.15%, respectively, with an increase in the pulse frequency,and the maximum increase in the lift and dragcoefficients was 33.33%and 16.78%,respectively,with increasing pulsation amplitude.Moreover, the downstream wake morphology changed significantly, and a combined vortex phenomenon appeared. Finally, a theoretical basis for examining the hydrodynamic characteristics of marine engineering equipment was established to aid future marine resource exploitation. 展开更多
关键词 Underwater manipulator Pulsating flow Hydrodynamic performance Vortex shedding Flow interference
暂未订购 下载PDF
耐有机溶剂型分离膜的制备及应用研究进展 认领 引用 被引量：10
3
作者 王思思 赵洋 +3 位作者 程羽君 李成才 朱海霖 刘国金 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2024年第1期159-167,共9页
有机溶剂的分离与纯化是近年来的研究热点,众多分离与纯化技术应运而生。耐有机溶剂膜分离技术具有高效节能、操作简便的优势,受到研究者们的普遍关注,在化工、环境、医药、纺织等领域具有广阔的应用前景。文中概括了耐有机溶剂型分离... 有机溶剂的分离与纯化是近年来的研究热点,众多分离与纯化技术应运而生。耐有机溶剂膜分离技术具有高效节能、操作简便的优势,受到研究者们的普遍关注,在化工、环境、医药、纺织等领域具有广阔的应用前景。文中概括了耐有机溶剂型分离膜的分离技术与分类,阐述了耐有机溶剂型分离膜的制备方法,介绍了耐有机溶剂型分离膜的应用进展,并对耐有机溶剂型分离膜的发展趋势进行了展望。综述内容可为耐有机溶剂型分离膜的推广和应用提供策略支撑。 展开更多
关键词 耐有机溶剂 膜分离技术 膜材料 制备方法 应用
暂未订购 下载PDF
Environmental factors drive the succession of microbial community structure during wheat Qu fermentation 认领 引用 被引量：5
4
作者 Qi Peng Huajun Zheng +5 位作者 HeFeng Yu Kai Meng Yujun Cheng Xinyi Yang Guangfa Xie Xiaomin Zheng 《Food Bioscience》 SCIE 2023年第6期1517-1525,共9页
Environmental factors significantly affected the succession of microbial communities during the fermentation of Huangjiu Raw wheat Qu(RWQ).Influence of environmental factors on microbial community during fermentation ... Environmental factors significantly affected the succession of microbial communities during the fermentation of Huangjiu Raw wheat Qu(RWQ).Influence of environmental factors on microbial community during fermentation of Chinese Huangjiu RWQ.The interaction of environmental factors and microorganisms affects the changes of microbial communities and key enzyme transcript levels in different stages during the production of Huangjiu RWQ.This study combined environmental factor analysis and high-throughput sequencing technology to comprehensively analyze the specific changes of microbial communities and environmental factors at each stage of Huangjiu production.In addition,the influence of the interaction of environmental factors and microorganisms on microbial succession was investigated by correlation analysis,and the enzymes related to saccharification and ethanol fermentation during the production of RWQ were explored.The results showed that Bacillus,Weisseria,Thermophilic actinomycetes and Lactobacillus were the dominant bacteria in RWQ,while Aspergillus,Thermomyces,Fusarium and Alternaria were the dominant fungi.Fungi were active in the early stage of RWQ fermentation,while bacteria were active in the middle and late stage of fermentation.Microbial community succession was closely related to environmental humidity and CO2.These environmental factors were positively correlated with most fungi,but negatively correlated with Thermophilic actinomycetes,Glycopolyspora and Acinetobacter.In fungi,the enzymes related to saccharification and fermentation mainly came from Thermophilic ascomycetes and thermophilic fungi,while in Bacteria,these two enzymes mainly came from weisseria.This study revealed the relationship between RWQ microbe and environmental factors,which was helpful to clarify the succession law of RWQ microbe. 展开更多
关键词 Fermentation Raw wheat Qu Microbiota Huangjiu Environment
“思政引领·教研互通”的《高等水化学》研究生课程教学改革探索与实践 认领 引用
5
作者 陈颖 程禹君 +3 位作者 刘水长 周腾智 杨黎俊 马满英 《当代教育思想研究》 2025年第3期23-27,共5页
针对当前研究生专业课程教学中存在的“思政元素与专业知识融合不足”“教学与科研脱节”等问题,本文以湖南工业大学市政工程专业核心学位课《高等水化学》为例,系统阐述了“思政引领+教研互通”的教学改革探索与实践。通过构建“模块... 针对当前研究生专业课程教学中存在的“思政元素与专业知识融合不足”“教学与科研脱节”等问题,本文以湖南工业大学市政工程专业核心学位课《高等水化学》为例,系统阐述了“思政引领+教研互通”的教学改革探索与实践。通过构建“模块化内容重构—精准化思政映射—持续化案例更新”的课程体系,创新“导—讲—研—练—赛”五环联动教学模式,建立“教学出题目、科研做文章、成果再回课堂”的教研互通机制,实现了知识传授、能力培养与价值塑造的有机统一。实践表明,该模式有效提升了研究生的科研创新能力与家国情怀,为新时代工科研究生课程思政建设提供了可推广的范式。 展开更多
关键词 高等水化学 课程思政 教研互通 研究生教育 教学改革
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈