检索结果-南通市图书馆

Boosting sulfur redox kinetics by a pentacenetetrone redox mediator for high-energy-density lithium-sulfur batteries

在线全文

学校读者我要写书评

暂无评论

Nano Research 2023年第6期16卷 8253-8259页

作者： Yan-Qi Peng Meng Zhao Zi-Xian Chen Qian Cheng Yiran Liu Xi-Yao Li yun-wei song Bo-Quan Li Jia-Qi Huang School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

Lithium-sulfur(Li-S)battery is considered as a promising energy storage system due to its ultrahigh theoretical energy density of 2,600 Wh·kg^(−1).Redox mediation strategies have been proposed to promote the sluggish sulfur redox ***,the applicability of redox mediators in practical high-energy-density Li-S batteries has seldomly been *** this work,5,7,12,14-pentacenetetrone(PT)is proposed as an effective redox mediator to promote the sulfur redox kinetics under practical working conditions.A high initial specific discharge capacity of 993 mAh·g^(−1) is achieved at 0.1 C with high-sulfur-loading cathodes of 4.0 mgS·cm^(−2)and low electrolyte/sulfur(E/S)ratio of 5μL·mg_(S)^(−1).More importantly,practical Li-S pouch cells with the PT mediator realize an actual initial energy density of 344 Wh·kg^(−1)and cycle stably for 20 cycles wih a high capacity retention of 88%.This work proposes an effective redox mediator and further verifies the redox mediation strategy for practical high-energydensity Li-S batteries.

关键词： lithium-sulfur batteries lithium polysulfides redox mediation sulfur redox kinetics pouch cells

A post-modification strategy to precisely construct dual-atom sites for oxygen reduction electrocatalysis

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第3期90卷 511-517,I0012页

作者： Juan Wang Xinyan Liu Chang-Xin Zhao yun-wei song Jia-Ning Liu Xi-Yao Li Chen-Xi Bi Xin Wan Jianglan Shui Hong-Jie Peng Bo-Quan Li Jia-Qi Huang School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina School of Materials Science and Engineering Beihang UniversityBeijing 100191China

Dual-atom catalysts(DACs) afford promising potential for oxygen reduction electrocatalysis due to their high atomic efficiency and high intrinsic ***,precise construction of dual-atom sites remains a *** this work,a post-modification strategy is proposed to precisely fabricate DACs for oxygen reduction ***,a secondary metal precursor is introduced to the primary single-atom sites to introduce direct metal-metal interaction,which ensures the formation of desired atom pair structure during the subsequent pyrolysis process and allows for successful construction of *** as-prepared FeCo-NC DAC exhibits superior oxygen reduction electrocatalytic activity with a half-wave potential of 0,91 V *** hydrogen ***-air batteries equipped with the FeCo-NC DAC demonstrate higher peak power density than those with the Pt/C *** importantly,this post-modification strategy is demonstrated universal to achieve a variety of dual-atom *** work presents an effective synthesis methodology for precise construction of catalytic materials and propels their applications in energy-related devices.

关键词： Dual-atom catalysts Electrocatalysis Oxygen reduction reaction Post-modification Zinc–air batteries

Use of Infrared Thermal Imaging to Isolate Arabidopsis Mutants Insensitive to H2O2

在线全文

学校读者我要写书评

暂无评论

Use of Infrared Thermal Imaging to Isolate Arabidopsis Mutan...

Passive activity enhances residual control ability in patients with complete spinal cord injury

中国植物生理学会全国学术年会暨成立40周年庆祝大会

作者： yun Zhou Yu-wei song Fa-cai Dong Chun-Peng song (College of life science, Henan University, Kaifeng 475001)

Recent studies have shown that active oxygen species(AOS)appear to play a crucial role in ***,in particular, have been previously implicated as second messengers in the regulation of the plant hypersensitiveresponse and stomatal response to ABA. Leaf temperature can be used as an indicator to detect mutants withaltered stomatal control, since transpiration cause leaf cooling. In this paper, we optimized experimentalconditions under which individual Arabidopsis plants with altered stomatal responses to HO can beidentified by thermography. Mutant is a powerful tool to unravel the mechanisms of plant response to *** this study, we use infrared thermal imaging to isolate Arabidopsis HO-insensitive mutants, and offer anexperimental protocol to analysis oxidative signal transduction in guard cells.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第8期20卷 2337-2347页

作者： Yanqing Xiao Mingming Gao Zejia He Jia Zheng Hongming Bai Jia-Sheng Rao Guiyun song wei song Xiaoguang Li Beijing Key Laboratory for Biomaterials and Neural Regeneration Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang UniversityBeijingChina Department of Rehabilitation Evaluation China Rehabilitation Research CenterBeijingChina Cardiac Center Beijing Children’s HospitalCapital Medical UniversityBeijingChina The State Key Laboratory of Virtual Reality Technology and Systems Beihang UniversityBeijingChina Department of Rehabilitation Engineering China Rehabilitation Science InstituteBeijingChina

Patients with complete spinal cord injury retain the potential for volitional muscle activity in muscles located below the spinal injury ***,because of prolonged inactivity,initial attempts to activate these muscles may not effectively engage any of the remaining neurons in the descending pathway.A previous study unexpectedly found that a brief clinical round of passive activity significantly increased volitional muscle activation,as measured by surface *** this study,we further explored the effect of passive activity on surface electromyographic signals during volitional control tasks among individuals with complete spinal cord *** patients with chronic complete thoracic spinal cord injury were *** electromyography data from eight major leg muscles were acquired and compared before and after the passive activity *** results indicated that the passive activity led to an increased number of activated volitional muscles and an increased frequency of *** the cumulative root mean square of surface electromyography amplitude for volitional control of movement showed a slight increase after passive activity,the difference was not statistically *** findings suggest that brief passive activity may enhance the ability to initiate volitional muscle activity during surface electromyography tasks and underscore the potential of passive activity for improving residual motor control among patients with motor complete spinal cord injury.

关键词： complete spinal cord injury cycle training epidural electrical stimulation motor training passive activity physiological state spinal cord circuit surface electromyography volitional control task

Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng song Ihar Razanau Juanxiu Xiao wei Xiao Di Hu Guoxiong Wang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power Sources Wuhan University State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of Belarus State Key Laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University Department of Chemical and Environmental Engineering University of Nottingham Ningbo China

Methane, an abundant one-carbon（C1） resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO2emissions and coke deposition. Electrochemical conversion of methane（ECM） using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO2emission.

关键词： Activation energy

试析CALIS西文三级编目员资格认证联机网考

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

农业图书情报学刊 2011年第5期23卷 224-224,F0003页

作者：魏云松大连外国语学院图书馆辽宁大连116044

通过对编目员资格认证考试流程、AB卷题型的特点和考试经验等方面的介绍,为了此类考试提供一定参考。

关键词：编目员联机编目资格认证考试

ACS6000交流传动系统在铝冷轧机主传动中的应用

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

装备制造技术 2012年第6期 185-187页

作者：韦云松广西南南铝加工有限公司广西南宁53003

介绍ABB中压传动系统ACS6000在铝冷轧主传动中的应用,主要描述ACS6000中压变频器在铝冷轧机应用中的系统构成和控制原理。

关键词： ACS6000 中压变频器控制系统直接转矩控制(DTC) 交流传动同步电机

在线全文

学校读者我要写书评

暂无评论

基于PLC的变频调速恒压供水系统的分析

装备制造技术 2012年第5期 47-49页

作者：韦云松广西南南铝加工有限公司广西南宁530031

介绍了一种替代常规水塔供水的基于PLC的变频调速恒压供水系统的构成、工作原理和具体实现方案。该系统采用VVVF变频器调节电机转速方式自动调节供水泵电机的转速和投入、切除运行水泵。将原来"先启后停"方式变为"先启先停"方式,全自动... 详细信息

介绍了一种替代常规水塔供水的基于PLC的变频调速恒压供水系统的构成、工作原理和具体实现方案。该系统采用VVVF变频器调节电机转速方式自动调节供水泵电机的转速和投入、切除运行水泵。将原来"先启后停"方式变为"先启先停"方式,全自动完成水泵的启动运行及切换,保证供水水压稳定,PLC控制的电机轮换程序,使各台水泵进行轮转,延长了水泵的使用寿命。

关键词：恒压供水节能变频器 PLC

Infiltration by monocytes of the central nervous system and its role in multiple sclerosis: reflections on therapeutic strategies

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第3期20卷 779-793页

作者： Guangyong Zhang Qing Yao Chubing Long Pengcheng Yi Jiali song Luojia Wu wei Wan Xiuqin Rao Yue Lin Gen wei Jun Ying Fuzhou Hua Department of Anesthesiology the Second Affiliated Hospital of Nanchang UniversityNanchangJiangxi ProvinceChina Key Laboratory of Anesthesiology of Jiangxi Province NanchangJiangxi ProvinceChina

Mononuclear macrophage infiltration in the central nervous system is a prominent feature of neuroinflammation. Recent studies on the pathogenesis and progression of multiple sclerosis have highlighted the multiple roles of mononuclear macrophages in the neuroinflammatory process. Monocytes play a significant role in neuroinflammation, and managing neuroinflammation by manipulating peripheral monocytes stands out as an effective strategy for the treatment of multiple sclerosis, leading to improved patient outcomes. This review outlines the steps involved in the entry of myeloid monocytes into the central nervous system that are targets for effective intervention: the activation of bone marrow hematopoiesis, migration of monocytes in the blood, and penetration of the blood–brain barrier by monocytes. Finally, we summarize the different monocyte subpopulations and their effects on the central nervous system based on phenotypic differences. As activated microglia resemble monocyte-derived macrophages, it is important to accurately identify the role of monocyte-derived macrophages in disease. Depending on the roles played by monocyte-derived macrophages at different stages of the disease, several of these processes can be interrupted to limit neuroinflammation and improve patient prognosis. Here, we discuss possible strategies to target monocytes in neurological diseases, focusing on three key aspects of monocyte infiltration into the central nervous system, to provide new ideas for the treatment of neurodegenerative diseases.

关键词： blood–brain barrier macrophages monocytes multiple sclerosis neuroinflammation review therapy