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Recent Advances in Fibrous Materials for Hydroelectricity Generation

Nano-Micro Letters 2025年第2期17卷 109-133页

作者： Can Ge Duo Xu Xiao feng Xing Yang Zheheng Song Yuhang Song Jingyu chen Yingcun Liu Chong Gao Yong Du Zhe Sun Weilin Xu Jian Fang College of Textile and Clothing Engineering Soochow UniversitySuzhou 215123People’s Republic of China National Engineering Laboratory for Modern Silk Soochow UniversitySuzhou 215123People’s Republic of China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Department of Electrical and Computer Engineering University of MassachusettsAmherstMA 01003USA Department of Materials Imperial College LondonSouth Kensington CampusLondon SW72AZUK College of Textile Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China School of Materials Science and Engineering Shanghai Institute of Technology100 Haiquan RoadShanghai 201418People’s Republic of China

Depleting fossil energy sources and conventional polluting power generation pose a threat to sustainable *** generation from ubiquitous and spontaneous phase transitions between liquid and gaseous water has been considered a promising strategy for mitigating the energy *** materials with unique flexibility,processability,multifunctionality,and practicability have been widely applied for fibrous materials-based hydroelectricity generation(FHG).In this review,the power generation mechanisms,design principles,and electricity enhancement factors of FHG are first ***,the fabrication strategies and characteristics of varied constructions including 1D fiber,1D yarn,2D fabric,2D membrane,3D fibrous framework,and 3D fibrous gel are ***,the advanced functions of FHG during water harvesting,proton dissociation,ion separation,and charge accumulation processes are analyzed in ***,the potential applications including power supply,energy storage,electrical sensor,and information expression are also ***,some existing challenges are considered and prospects for future development are sincerely proposed.

关键词： Hydroelectricity Fibrous material Streaming potential Ion diffusion

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不同增长趋势下中长期电量预测组合优化灰色模型

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上海交通大学学报 2003年第9期37卷 1355-1357,1371页

作者：丁屹峰程浩忠江峰青陈春霖房领峰上海交通大学电气工程系上海200030 上海市电力公司发展计划科上海200002

针对中长期电量预测中时间跨度大、电力需求增长不确定的特性,根据不同时期的增长率,运用灰色理论进行优化分段预测,同时引入组合模型的概念,建立了以残差平方和最小为目标函数的组合优化模型,并运用二次规划法求解.算例证明,该方法能... 详细信息

针对中长期电量预测中时间跨度大、电力需求增长不确定的特性,根据不同时期的增长率,运用灰色理论进行优化分段预测,同时引入组合模型的概念,建立了以残差平方和最小为目标函数的组合优化模型,并运用二次规划法求解.算例证明,该方法能得到较高精度.

关键词：电量预测组合灰色模型残差平方和二次规划

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Halogen composition and heterogeneity in the continental lithospheric mantle

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Science China Earth Sciences 2025年第1期68卷 310-314页

作者： Chunfei chen State Key Laboratory of Geological Processes and Mineral Resources School of Earth Sciences China University of Geosciences

1. Introduction Halogens, including fluorine(F), chlorine(Cl), bromine(Br), and iodine(I), are highly mobile and water-soluble elements that can become significantly enriched in melts and fluids. In fluids and melts, halogens react with nearly all metals and readily form complexes with metal cations, significantly influencing the distribution of metal elements between different phases. Therefore, halogens play a crucial role in the migration, enrichment, and mineralization of key metals in the lithosphere(Weis et al., 2012; Liu et al., 2024).

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Modeling and control of a rigid-flexible coupling robot for narrow space manipulations

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Science China Technological Sciences 2025年

作者： Kuangda chen Huan ZHAO Jiexin ZHANG Mei feng Yiwei WANG Jinliang WANG Han DING State Key Laboratory of Intelligent Manufacturing Equipment and Technology Huazhong University of Science and Technology Key Laboratory of CNC Equipment Reliability Ministry of Education Jilin University School of Medical Equipment Science and Engineering Huazhong University of Science and Technology

Narrow space manipulations are crucial for equipment maintenance, as they eliminate the need for disassembly, thus reducing costs and increasing efficiency. Cable-driven flexible robots possess exceptional capabilities in maneuvering through narrow spaces, thanks to their interaction compliance and distal dexterity. However, their inherent low stiffness causes a decline in the location accuracy of the robot and could even lead to manipulation failure. To address this challenge, this paper proposes a novel type of rigid-flexible coupling robot, which increases the stiffness of the robot while ensuring the reachability within a narrow space. To achieve high-accuracy location in a narrow space, kinematic and control methods are proposed. Specifically,the robot forward kinematics are uniformly represented, and the closed-form inverse kinematics solution is derived. Furthermore, in cases where the robot?s structure fails to align with Pieper?s solution, a two-stage search strategy is utilized to solve the inverse kinematics, resulting in a high success rate of 99.1%. Based on the proposed kinematics, a rigid-dominated control method is then proposed to facilitate localization and pose alignment of target objects in narrow spaces. The practical comparative experiments show that the proposed robot has the capability of high accuracy control in narrow spaces.

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Cyano migration-mediated radical-polar crossover cyclopropanation

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Science China Chemistry 2025年第1期68卷 241-248页

作者： Ziqiang Wang Yasu chen Jie Li chen Zhu Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials ScienceSoochow University Frontiers Science Center for Transformative Molecules Zhangjiang Institute for Advanced Study and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Shanghai Jiao Tong University

We report a novel cyano migration-mediated radical-polar crossover process, whereby both the sulfonylcyanation of aliphatic alkenes and the formation of cyclopropanes are concurrently achieved. This transformation yields a diverse array of multisubstituted cyclopropanes under mild photocatalytic conditions. Mechanistic studies elucidate that the reaction proceeds via intramolecular nucleophilic substitution, leading to the formation of the cyclopropane derivatives.

关键词： cyclopropanation cyano migration radical-polar crossover radical reactions

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Exploring the interaction between the gut microbiota and cyclic adenosine monophosphate-protein kinase A signaling pathway:a potential therapeutic approach for neurodegenerative diseases

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Neural Regeneration Research 2025年第11期20卷 3095-3112页

作者： fengcheng Deng Dan Yang Lingxi qing Yifei chen Jilian Zou Meiling Jia Qian Wang Runda Jiang Lihua Huang College of Pharmacy Chengdu University of Traditional Chinese MedicineChengduSichuan ProvinceChina State Key Laboratory of Southwestern Chinese Medicine Resources Chengdu University of Traditional Chinese MedicineChengduSichuan ProvinceChina

The interaction between the gut microbiota and cyclic adenosine monophosphate(cAMP)-protein kinase A(PKA)signaling pathway in the host's central nervous system plays a crucial role in neurological diseases and enhances communication along the gut–brain *** gut microbiota influences the cAMP-PKA signaling pathway through its metabolites,which activates the vagus nerve and modulates the immune and neuroendocrine ***,alterations in the cAMP-PKA signaling pathway can affect the composition of the gut microbiota,creating a dynamic network of microbial-host *** reciprocal regulation affects neurodevelopment,neurotransmitter control,and behavioral traits,thus playing a role in the modulation of neurological *** coordinated activity of the gut microbiota and the cAMP-PKA signaling pathway regulates processes such as amyloid-β protein aggregation,mitochondrial dysfunction,abnormal energy metabolism,microglial activation,oxidative stress,and neurotransmitter release,which collectively influence the onset and progression of neurological *** study explores the complex interplay between the gut microbiota and cAMP-PKA signaling pathway,along with its implications for potential therapeutic interventions in neurological *** pharmacological research has shown that restoring the balance between gut flora and cAMP-PKA signaling pathway may improve outcomes in neurodegenerative diseases and emotional *** can be achieved through various methods such as dietary modifications,probiotic supplements,Chinese herbal extracts,combinations of Chinese herbs,and innovative dosage *** findings suggest that regulating the gut microbiota and cAMP-PKA signaling pathway may provide valuable evidence for developing novel therapeutic approaches for neurodegenerative diseases.

关键词： cyclic adenosine monophosphate emotional disorders gut microbiota neurodegenerative diseases neurological diseases protein kinase A reciprocal regulation signaling pathway strategy therapies

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Localizing base stations with measured data:a concatenated image-based deep learning approach

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Science China(Information Sciences) 2025年

作者： Yang chen Ziyuan LIU feng JIANG Hong SHEN Wei XU Mengyu LI Ritao chenG National Mobile Communications Research Laboratory Southeast University China Mobile Group Design Institute Co. Ltd.

Localization has become an indispensable function of modern cellular communication systems[1]. In a cloud radio access network （C-RAN）, the remote radio head （RRH） is the actual signal transmitter, whose location ...

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Oxygen vacancies enriched Ir/WOx catalysts for the directly chem-catalytic conversion of cellulose to ethanol

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Tungsten 2025年第1期7卷 88-99页

作者： Yu-Jing Weng Zhao-Ying Ding Ying-Chao Li Yuan-feng Wu Yuan-Yang Xu Rui chen Xiao-Lei Zhao Hai-Yong Wang Da-Lei Zhang Yu-Long Zhang Henan Key Laboratory of Coal Green Conversion and International Joint Laboratory of Coal Clean Utilization College of Chemistry and Chemical Engineering Henan Polytechnic University Key Laboratory of Renewable Energy Guangzhou Institute of Energy Conversion Chinese Academy of Sciences Liaoning Institute of Energy Technology

Tungsten and its oxides are highly versatile catalysts with unique properties that hold great promise for a wide array of applications,including biological pathways and chemical *** chemo-catalysis of cellulose to ethanol presents a promising avenue for ethanol synthesis with the potential for enhanced efficiency compared to conventional methods,offering a sustainable and carbon-neutral alternative to existing petrochemical and biological ***,Ir/WOxcatalysts enriched with oxygen vacancies were meticulously prepared and demonstrated remarkable catalytic performance in converting cellulose to ethanol directly in the presence of tungstic *** catalyst achieved a high ethanol yield of 66.5%under optimal reaction conditions,approaching the theoretical yield limit of traditional ethanol *** results revealed the presence of oxygen defects,Bronsted/Lewis acidity,and Ir nanoclusters on the catalyst surface,working synergistically to facilitate the cascade catalysis of cellulose hydrolysis,sugar retro-aldol condensation reaction,and C2 intermediate hydrodeoxygenation to *** situ Fourier transform infrared spectrometer analysis confirmed the catalyst's ability to enhance the adsorption and activation of ethylene glycol for ethanol *** manipulating subtle structural features,this study offers a fresh perspective on tungsten group catalyst design and underscores the importance of synergistic effects among catalytic sites for the efficient production of ethanol from cellulose.

关键词： Cellulosic ethanol Chem-catalysis Hydrogenolysis Retro-aldol condensation Tungsten

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北京中医药大学以应用能力为导向的大学英语教学改革实践与探讨

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国际中医中药杂志 2017年第7期39卷 629-633页

作者：孔祥国叶青陈锋北京中医药大学人文学院 100029

中医药院校大学英语教学应建立起体现中医药院校特色并具有较强的可操作性和可推广性的教学体系。本文以北京中医药大学为例，探讨该校近6年来以提高学生英语应用能力为导向的大学英语教学改革的必要性、理论依据、具体方法和阶段性成... 详细信息

中医药院校大学英语教学应建立起体现中医药院校特色并具有较强的可操作性和可推广性的教学体系。本文以北京中医药大学为例，探讨该校近6年来以提高学生英语应用能力为导向的大学英语教学改革的必要性、理论依据、具体方法和阶段性成果，以期抛砖引玉，更好地服务于学生的学习需求和专业发展，以及院校人才培养整体目标。

关键词：中医药学教育改革大学英语应用能力

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掌指骨的X线测量及相互间数学比例关系的临床应用研究

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实用放射学杂志 2002年第7期18卷 585-588页

作者：张庆刘丰春陈忠恒青岛市人民医院放射科青岛大学医学院人体解剖学教研室青岛大学医学院人体解剖学教研室山东青岛266001

目的　对掌、指骨进行X线测量 ,为临床诊断及手外科提供可靠的解剖学数据和资料 ,同时提供掌骨长、指骨长之间的数学比例关系式 ,对手外科掌指骨长度的确定和假体的设计提供参考依据。方法　随机选择健康汉族大学生 186人 (男 90人 ,女... 详细信息

目的　对掌、指骨进行X线测量 ,为临床诊断及手外科提供可靠的解剖学数据和资料 ,同时提供掌骨长、指骨长之间的数学比例关系式 ,对手外科掌指骨长度的确定和假体的设计提供参考依据。方法　随机选择健康汉族大学生 186人 (男 90人 ,女 96人 ) ,进行双手后前位X线拍片 ,分别测量各掌骨与指骨长 ,将所得数据应用SPSS软件进行统计学分析。结果　得出各掌骨长、各节指骨长的比例关系 ,其中一 /二、二 /四、二 /五、三 /四掌骨长比值 ,拇指 /示指、拇指 /环指、示指 /小指近节指骨长比 ,示指 /小指、中指 /小指、环指 /小指中节指骨长比 ,拇指 /示指、拇指 /中指远节指骨长比值性别差异均有显著性意义。结论　以上比例关系式在手矫形外科中对各种原因引起的手骨缺陷进行理想的掌长及指长选择 ,从而为假体设计提供帮助

关键词：手 X线摄影测量学

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