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MXene Hybridized Polymer with Enhanced Electromagnetic Energy Harvest for Sensitized Microwave Actuation and Self-Powered Motion Sensing

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NANO-MICRO LETTERS 2025年第1期17卷 1-15页

作者： Wang, Yu-Ze Wang, Yu-Chang liu, Ting-Ting Zhao, Quan-liang li, chen-sha Cao, Mao-Sheng Beijing Inst Technol Sch Mat Sci & Engn Beijing 100081 Peoples R China Peking Univ Sch Mat Sci & Engn Beijing 100871 Peoples R China North China Univ Technol Sch Mech & Mat Engn Beijing 100144 Peoples R China Heilongjiang Univ Minist Educ Peoples Republ China Key Lab Funct Inorgan Mat Chem Harbin 150080 Peoples R China

Polymeric microwave actuators combining tissue-like softness with programmable microwave-responsive deformation hold great promise for mobile intelligent devices and bionic soft robots. However, their application is challenged by restricted electromagnetic sensitivity and intricate sensing coupling. In this study, a sensitized polymeric microwave actuator is fabricated by hybridizing a liquid crystal polymer with Ti3C2Tx (MXene). Compared to the initial counterpart, the hybrid polymer exhibits unique space-charge polarization and interfacial polarization, resulting in significant improvements of 230% in the dielectric loss factor and 830% in the apparent efficiency of electromagnetic energy harvest. The sensitized microwave actuation demonstrates as the shortened response time of nearly 10 s, which is merely 13% of that for the initial shape memory polymer. Moreover, the ultra-low content of MXene (up to 0.15 wt%) benefits for maintaining the actuation potential of the hybrid polymer. An innovative self-powered sensing prototype that combines driving and piezoelectric polymers is developed, which generates real-time electric potential feedback (open-circuit potential of similar to 3 mV) during actuation. The polarization-dominant energy conversion mechanism observed in the MXene-polymer hybrid structure furnishes a new approach for developing efficient electromagnetic dissipative structures and shows potential for advancing polymeric electromagnetic intelligent devices.

关键词： Microwave absorption Electromagnetic response Energy harvest Self-sensing Soft actuator

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Regulation of Calvin-Benson cycle enzymes under high temperature stress

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aBIOTECH 2022年第1期3卷 65-77页

作者： Juan-Hua chen Ming Tang Xue-Qi Jin Han li li-sha chen Qing Long Wang Ai-Zhen Sun Yin Yi Fang-Qing Guo National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences Institute of Plant Physiology and EcologyChinese Academy of Sciences300 Fenglin RoadShanghai 200032China Key Laboratory of Plant Physiology and Developmental Regulation School of Life SciencesGuizhou Normal UniversityGuiyang 550001GuizhouChina Key Laboratory of State Forestry Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China Guizhou Normal UniversityGuiyang 550001GuizhouChina University of Chinese Academy of Sciences Beijing 100049China

The Calvin Benson cycle(CBC)consists of three critical processes,including fixation of CO_(2) by Rubisco,reduction of 3-phosphoglycerate(3PGA)to triose phosphate(triose-P)with NADPH and ATP generated by the light reactions,and regeneration of ribulose 1,5-bisphosphate(RuBP)from *** activ-ities of photosynthesis-related proteins,mainly from the CBC,were found more significantly affected and regulated in plants challenged with high temperature stress,incuding Rubisco,Rubisco activase(RCA) and the enzymes involved in RuBP regeneration,such as sedoheptulose-1,7-bisphosphatase(SBPase).Over the past years,the regulatory mechanism of CBC,especially for redox-regulation,has attracted major interest,because balancing flux at the various enzymatic reactions and maintaining metabolite levels in a range are of critical importance for the optimal operation of CBC under high temperature stress,providing insights into the genetic manipulation of ***,we summarize recent progress regarding the identification of various layers of regulation point to the key enzymes of CBC for acclimation to environmental temperature changes along with open questions are also discussed.

关键词： Calvin-Benson cycle High temperature stress Redox regulation Rubisco Rubisco activase SBPase CO_(2)fixation

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Isotypic heterojunction based on Fe-doped and terephthalaldehyde-modified carbon nitride for improving photocatalytic degradation with simultaneous hydrogen production

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Chinese Chemical Letters 2021年第9期32卷 2782-2786页

作者： Xun-Heng Jiang Fan Yu Dai-She Wu Lei Tian ling-ling Zheng li-sha chen Peng chen Long-Shuai Zhang Hui Zeng Ying chen Jian-Ping Zou Key Laboratory of Poyang Lake Environment and Resource Utilization of Ministry of Education School of Resources Environmental and Chemical EngineeringNanchang UniversityNanchang 330031China Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization Nanchang Hangkong UniversityNanchang 330063China

To achieve an efficient photocatalytic for clean energy production and environmental remediation,the highly active Fe-doped and terephthalaldehyde-modified carbon nitride(Fe-CN/NTE)isotypic heterojunction photocatalyst is constructed via a simple annealing method for degradation of organic pollutants with simultaneous resource *** Fe-CN/NTE catalyst exhibits a 93%removal rate of pnitrophenol(4-NP)and a 1.72 mmol/g H2 evolution rate in 2 h simultaneously under visible light irradiation,which are higher than those of pristine CN,Fe-CN,and NTE,*** tests show that the excellent photocatalytic performance of Fe-CN/NTE comes from the improved migration,transportation,and separation of photoinduced charge carriers and expanded light-harvesting ***,hydroxyl radical(·OH),electron(e^(-)),and hole(h^(+))are the main active species and the rational mechanism of 4-NP photodegradation was proposed based on scavenger measurements and liquid chromatography-mass spectrometry(LC–MS),*** heterojunction Fe-CN/NTE photocatalyst possesses excellent stability in the H2 evolution and 4-NP degradation during five-run cycle tests,posing as a promising candidate in practical works for organic pollution and energy challenges.

关键词： Isotypic heterojunction Photocatalytic degradation Simultaneous hydrogen evolution Carbon nitride

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A new prospect in cancer therapy: targeting cancer stem cells to eradicate cancer

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Chinese Journal of Cancer 2012年第12期31卷 564-572页

作者： li-sha chen An-Xin Wang Bing Dong Ke-Feng Pu li-Hua Yuan Yi-Min Zhu Nanobiomedicine Division Suzhou Institute of NanoTech and Nano-BionicsChinese Academy of Sciences National Laboratory of Biomacromolecules Institute of BiophysicsChinese Academy of Sciences Graduate University of the Chinese Academy of Sciences

According to the cancer stem cell theory, cancers can be initiated by cancer stem cells. This makes cancer stem cells prime targets for therapeutic intervention. Eradicating cancer stem cells by efficient targeting agents may have the potential to cure cancer. In this review, we summarize recent breakthroughs that have improved our understanding of cancer stem cells, and we discuss the therapeutic strategy of targeting cancer stem cells, a promising future direction for cancer stem cell research.

关键词：肿瘤干细胞肿瘤治疗癌症根除靶向制剂

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Optical characteristics and environmental pollutants detection of porous silicon microcavities

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Science China Chemistry 2011年第8期54卷 1348-1356页

作者： HUANG JianFeng, li sha, chen QingWei & CAI linTao CAS Key Laboratory of Health Informatics Shenzhen Key Laboratory of Cancer Nanotechnology Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China 1. CAS Key Laboratory of Health Informatics Shenzhen Key Laboratory of Cancer Nanotechnology Institute of Biomedical and Health Engineering Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 China

Porous silicon microcavities (PSM) optical crystals consisting of a Fabry-Perot microcavity embedded between two distributed Bragg reflectors have been fabricated by electrochemical etching. Scanning electron microscopy (SEM) clearly depicted their physical sandwich construction. The optical feature of the PSM structure was tuned by varying the anodization parameters. Through proper thermal oxidation and surface chemical modifications, the resulting structures were employed as optical sensors for the detection of environmental pollutants including volatile organic vapors (i.e. acetonitrile, toluene, cyclohexane, chloroform, acetone and ethanol) and interior decoration gases (i.e. toluene, ammonia and formaldehyde). Fourier transform infrared spectroscopy (FTIR) spectra confirmed the effective thermal annealing and surface modification chemistry, and the sensing process was accompanied by recording the modified structures' optical responses when exposed to target analytes. The PSM optical sensors showed good stability, sensitivity and selectivity, implying promising applications in gas sensing and en- vironmental monitoring.

关键词： porous silicon microcavity optical sensor thermal oxidation surface modification environmental pollutants detection

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女性主义解读勃朗宁——评《我的前公爵夫人》和《波菲利雅的情人》

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湖南师范大学社会科学学报 2005年第2期34卷 91-94页

作者：陈莉莎湖南师范大学外国语学院湖南长沙410081

勃朗宁《我的前公爵夫人》和《波菲利雅的情人》两首诗中的男性叙说者就是父权制社会男人权力和占有欲的典型代表,两位女性人物就是男权社会牺牲品的象征。男女共存的和谐社会才是理想的人文社会。

关键词：勃朗宁女性主义戏剧独白父权制

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用碳纳米管从硝酸溶液中回收镅

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核化学与放射化学 2005年第4期27卷 239-241页

作者：王兴海李辰砂陈靖清华大学核能与新能源技术研究院北京102201

研究了用碳纳米管从放射性废硝酸溶液中进行镅的回收。在浓硝酸溶液中,碳纳米管对镅的吸附率小于1%;随着硝酸浓度的降低,镅的吸附率迅速升高,当溶液的pH值大于5时,碳纳米管对镅的吸附率达到99.95%以上。用1.5 mol/L硝酸进行解吸,一次解... 详细信息

研究了用碳纳米管从放射性废硝酸溶液中进行镅的回收。在浓硝酸溶液中,碳纳米管对镅的吸附率小于1%;随着硝酸浓度的降低,镅的吸附率迅速升高,当溶液的pH值大于5时,碳纳米管对镅的吸附率达到99.95%以上。用1.5 mol/L硝酸进行解吸,一次解吸能够从碳纳米管回收99%以上的镅。

关键词：碳纳米管镅吸附

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中孔TiO_2的制备及光催化降解罗丹明性能的研究

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材料工程 2005年第6期33卷 27-30页

作者：王正平陈兴娟李辰砂哈尔滨工程大学化工学院哈尔滨150001 清华大学核研院北京102201

以十六烷基三甲基溴化胺为模板剂,采用溶胶-凝胶法,在溶胶-凝胶制备过程中引入紫外光照辐射,制备出具有一定特殊性能的中孔TiO2材料。采用X射线粉末衍射(XRD)、N2吸附-脱附、紫外-可见吸收、漫反射紫外、表面光电压谱等手段对其进行了... 详细信息

以十六烷基三甲基溴化胺为模板剂,采用溶胶-凝胶法,在溶胶-凝胶制备过程中引入紫外光照辐射,制备出具有一定特殊性能的中孔TiO2材料。采用X射线粉末衍射(XRD)、N2吸附-脱附、紫外-可见吸收、漫反射紫外、表面光电压谱等手段对其进行了分析和表征。以紫外灯为光源,通过对水溶性染料罗丹明B的光降解反应,考察了光助中孔TiO催化剂的光催化活性。

关键词：中孔 TiO2 光催化化学模板罗丹明B

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关于完善中国新型农村居民养老保险体系的研究（英文）

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中国市场 2014年第4期 124-128页

作者： SUN Yi-fan chen li-sha 马来西亚理工大学

在中国,农民是一个数量庞大的弱势群体。农村的公共服务建设落后于城市,尤其是在养老保障方面。为农民提供社会保护和保障其生活质量,有利于在农村和城市地区减少贫困、改善老年生活状况。2009年,在中国建立了新型农村居民养老保险体系... 详细信息

在中国,农民是一个数量庞大的弱势群体。农村的公共服务建设落后于城市,尤其是在养老保障方面。为农民提供社会保护和保障其生活质量,有利于在农村和城市地区减少贫困、改善老年生活状况。2009年,在中国建立了新型农村居民养老保险体系。本研究旨在为中国的政策制定者提供参考。为此本研究采用了四轮德尔菲法,以探讨中国新型农村居民养老保险体系中可以完善的领域,以及这些领域的优先次序。

关键词：养老保险体系农村居民德尔菲法提升空间

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Stability Prediction in Smart Grid Using PSO Optimized XGBoost Algorithm with Dynamic Inertia Weight Updation

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 909-931页

作者： Adel Binbusayyis Mohemmed sha Department of Software Engineering College of Computer Engineering and Sciences in Al-Kharj Prince Sattam Bin Abdulaziz UniversityAl-Kharj11942Saudi Arabia

Prediction of stability in SG(Smart Grid)is essential in maintaining consistency and reliability of power supply in grid *** the fluctuations in power generation and consumption patterns of smart cities assists in effectively managing continuous power supply in the *** also possesses a better impact on averting overloading and permitting effective energy *** though many traditional techniques have predicted the consumption rate for preserving stability,enhancement is required in prediction measures with minimized *** overcome the complications in existing studies,this paper intends to predict stability from the smart grid stability prediction dataset using machine learning *** accomplish this,pre-processing is performed initially to handle missing values since it develops biased models when missing values are mishandled and performs feature scaling to normalize independent data ***,the pre-processed data are taken for training and *** that,the regression process is performed using Modified PSO(Particle Swarm Optimization)optimized XGBoost Technique with dynamic inertia weight update,which analyses variables like gamma(G),reaction time(tau1–tau4),and power balance(p1–p4)for providing effective future stability in *** PSO attains optimal solution by adjusting position through dynamic inertial weights,it is integrated with XGBoost due to its scalability and faster computational speed *** hyperparameters of XGBoost are fine-tuned in the training process for achieving promising outcomes on *** results are measured through evaluation metrics such as MSE(Mean Square Error)of 0.011312781,MAE(Mean Absolute Error)of 0.008596322,and RMSE(Root Mean Square Error)of 0.010636156 and MAPE(Mean Absolute Percentage Error)value of 0.0052 which determine the efficacy of the system.

关键词： Smart Grid machine learning particle swarm optimization XGBoost dynamic inertia weight update

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