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Homologous Strategy to Construct High‑Performance Coupling Electrodes for Advanced Potassium‑Ion Hybrid Capacitors

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Nano-Micro Letters 2021年第1期13卷 289-302页

作者： Ying Xu jiafeng Ruan Yuepeng Pang Hao Sun Chu Liang Haiwen Li Junhe Yang Shiyou zheng School of Materials Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093People’s Republic of China College of Materials Science and Engineering Zhejiang University of TechnologyHangzhou 310014People’s Republic of China International Research Center for Hydrogen Energy Kyushu UniversityFukuoka 819‑0395Japan

Potassium-ion hybrid capacitors(PIHCs)have been considered as promising potentials in mid-to large-scale storage system applications owing to their high energy and power ***,the process involving the intercalation of K+into the carbonaceous anode is a sluggish reaction,while the adsorption of anions onto the cathode surface is relatively faster,resulting in an inability to exploit the advantage of high *** achieve a high-performance PIHC,it is critical to promote the K^+insertion/desertion in anodic materials and design suitable cathodic materials matching the *** this study,we propose a facile“homologous strategy”to construct suitable anode and cathode for high-performance PIHCs,that is,unique multichannel carbon fiber(MCCF)-based anode and cathode materials are firstly prepared by electrospinning,and then followed by sulfur doping and KOH activation treatment,*** to a multichannel structure with a large interlayer spacing for introducing S in the sulfur-doped multichannel carbon fiber(S-MCCF)composite,it presents high capacity,super rate capability,and long cycle stability as an anode in potassium-ion *** cathode composite of activated multichannel carbon fiber(aMCCF)has a considerably high specific surface area of 1445 m^2 g^−1 and exhibits outstanding capacitive *** particular,benefiting from advantages of the fabricated S-MCCF anode and aMCCF cathode by homologous strategy,PIHCs assembled with the unique MCCF-based anode and cathode show outstanding electrochemical performance,which can deliver high energy and power densities(100 Wh kg^−1 at 200 W kg^−1,and 58.3 Wh kg^−1 at 10,000 W kg^−1)and simultaneously exhibit superior cycling stability(90%capacity retention over 7000 cycles at 1.0 A g^−1).The excellent electrochemical performance of the MCCF-based composites for PIHC electrodes combined with their simple construction renders such materials attractive for further in-depth investigations of alkali-ion

关键词： Carbon fibers Potassium-ion capacitor Alkali-ion battery

Engineering CoMoO_(4) in reduced graphene oxide as superior cathode hosts for advanced room-temperature sodium-sulfur batteries

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Journal of Energy Chemistry 2023年第11期86卷 620-627,I0013页

作者： Xin Ye Sainan Luo Zhiqi Li jiafeng Ruan Yuepeng Pang Junhe Yang John Wang Shiyou zheng School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai 200093China 2 Department of Materials Science and Engineering National University of SingaporeSingapore 119077Singapore

Promising room-temperature sodium-sulfur(RT Na-S)battery systems rely on purposely designed highperforming and low-cost electrode ***,there are the challenges of irreversible dissolution and slow redox kinetics of NaPSs in the complete discharge of sulfur ***,engineered CoMoO_(4)in reduced graphene oxide(CoMoO_(4)@rGO)is reported as a class of superior cathode hosts for RT Na-S *** CoMoO_(4)@rGO matrix is designed to facilitate the reversible sodiation and desodiation of sulfur,considering the strong chemisorption between sulfur(and short-chain sodium sulfides)and CoMoO_(4),which alleviates the shuttle effect of sodium sulfides and accelerates the electrochemical reaction rate at *** obtained S/CoMoO_(4)@rGO cathode with~52%S loading exhibits a high capacity of520.1 mA h g^(-1)after 100 cycles at 0.1 A g^(-1).Moreover,an enhanced long-term performance at high current densities(212.2 mA h g^(-1)at 4 A g^(-1)over 1000 cycles)with high Coulombic efficiency(~100%)is also *** work demonstrates a novel multifunctional additive for RT Na-S battery cathodes,which is expected to promote the long-waited development towards practical applications of RT Na-S batteries.

关键词： Sodium-sulfur battery Cathode CoMoO_(4) Reduced graphene oxide

不同维持量枸橼酸咖啡因对早产儿呼吸暂停的疗效观察

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儿科药学杂志 2018年第8期24卷 20-23页

作者：孙璐双林新宇郑家峰刘玮王小静张立明潍坊医学院山东潍坊261053 潍坊市人民医院山东潍坊261041

目的:探讨不同维持量枸橼酸咖啡因对早产儿原发性呼吸暂停(AOP)的疗效。方法:选择2015年12月至2017年4月潍坊市人民医院新生儿科收治的胎龄28~34周的AOP患儿共128例,随机分为治疗组和对照组各64例。两组患儿均给予一般治疗和枸橼酸咖啡... 详细信息

目的:探讨不同维持量枸橼酸咖啡因对早产儿原发性呼吸暂停(AOP)的疗效。方法:选择2015年12月至2017年4月潍坊市人民医院新生儿科收治的胎龄28~34周的AOP患儿共128例,随机分为治疗组和对照组各64例。两组患儿均给予一般治疗和枸橼酸咖啡因首剂20 mg/kg,对照组治疗24 h后枸橼酸咖啡因维持量5 mg/(kg·d),治疗组治疗24 h后枸橼酸咖啡因维持量10 mg/(kg·d),均为每日静脉注射1次,应用至呼吸暂停停止发作后7 d。比较两组患儿临床疗效、呼吸暂停发作频次、呼吸暂停消失时间、用药时间、呼吸机使用情况及不良反应发生情况等。结果:治疗组用药1 d后的呼吸暂停发作频率为(3.4±1.1)次/天,呼吸暂停消失时间为(2.7±0.8)d,用药时间为(9.8±0.5)d,上机时间为(3.1±0.7)d;对照组药1 d后呼吸暂停发作频率为(5.4±1.5)次/天,呼吸暂停消失时间为(4.5±2.2)d,用药时间为(11.6±0.9)d,上机时间为(5.8±1.5)d,两组比较差异均有统计学意义(P0.05)。结论:枸橼酸咖啡因治疗AOP时,大剂量较一般维持量更有效,且不良反应发生情况未见明显增加。

关键词：早产儿原发性呼吸暂停枸橼酸咖啡因维持量

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植物嫁接亲和力影响因子研究进展

南方林业科学 2024年第1期52卷 67-73,78页

作者：郑妍纯李安生郑鹏刘少群谭新东方佳锋孙彬妹华南农业大学园艺学院茶学系广东广州510642 广东军枞茶业有限公司广东揭阳515200

嫁接亲和力对植物的嫁接成功率具有直接影响,研究植物嫁接亲和力,筛选合适的优良嫁接品种进行栽培,可减少时间和经济成本,提高嫁接植株的总体效益。本文从形态指标、细胞组织学、生理生化调控机制、分子水平四个方向综述了植物嫁接亲和... 详细信息

嫁接亲和力对植物的嫁接成功率具有直接影响,研究植物嫁接亲和力,筛选合适的优良嫁接品种进行栽培,可减少时间和经济成本,提高嫁接植株的总体效益。本文从形态指标、细胞组织学、生理生化调控机制、分子水平四个方向综述了植物嫁接亲和力的影响因子,发现影响植物嫁接亲和力的因子有:嫁接植株的生长势、新梢生长速度和嫁接口愈合程度等植物形态指标,嫁接植株在愈合过程中愈伤组织的形成、胞间连丝的形成和愈伤组织的分化等细胞组织过程,嫁接植株中的水分、叶绿素、可溶性糖、淀粉、氨基酸、可溶性蛋白质、酚类物质、酶类物质和植物激素等物质的生理生化过程,以及嫁接植株间的基因组关系、转录组中相关基因表达、蛋白质表达与互作等分子水平等。每种植物的嫁接亲和力影响因子不同,需要筛选合适的指标来进行分析。

关键词：植物嫁接亲和力

超高效液相色谱串联三重四极杆质谱法在水产品兽药残留检测中的研究进展

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食品安全导刊 2024年第5期 176-178页

作者：汪杰郑丹杨家锋梁芹芹邬维益宁波市海洋与渔业研究院浙江宁波315000

高效快速的水产品兽药残留检测分析方法是保障水产品质量安全的有效技术手段。超高效液相色谱串联三重四极杆质谱法(Super-High Performance Liquid Chromatography-Mass Spectrum,UPLC-MS/MS)具有特异性强、灵敏度高等特点,适用于水产... 详细信息

高效快速的水产品兽药残留检测分析方法是保障水产品质量安全的有效技术手段。超高效液相色谱串联三重四极杆质谱法(Super-High Performance Liquid Chromatography-Mass Spectrum,UPLC-MS/MS)具有特异性强、灵敏度高等特点,适用于水产品兽药残留检测分析。本文阐述水产品中兽药残留检测的重要意义,介绍UPLC-MS/MS法的原理及优势,并对UPLC-MS/MS法在水产品兽药残留检测的应用进行概述。

关键词：水产品超高效液相色谱串联三重四极杆质谱法兽药残留应用

Photothermal/matrix metalloproteinase-2 dual-responsive gelatin nanoparticles for breast cancer treatment

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Acta Pharmaceutica Sinica B 2021年第1期11卷 271-282页

作者： Xiaojie Chen jiafeng Zou Ke Zhang Jingjing Zhu Yue Zhang Zhihong Zhu Hongyue zheng Fanzhu Li Ji-Gang Piao College of Pharmaceutical Sciences Zhejiang Chinese Medical UniversityHangzhou 310053China Libraries of Zhejiang Chinese Medical University Zhejiang Chinese Medical UniversityHangzhou 310053China

The chemotherapy combined with photothermal therapy has been a favorable approach for the treatment of breast *** present study,nanoparticles with the characteristics of photothermal/matrix metalloproteinase-2(MMP-2)dual-responsive,tumor targeting,and size-variability were designed for enhancing the antitumor efficacy and achieving"on-demand"drug release *** on the thermal sensitivity of gelatin,we designed a size-variable gelatin nanoparticle(GNP)to encapsulate indocyanine green(ICG)and doxorubicin(DOX).Under an 808 nm laser irradiation,GNP-DOX/ICG responded photothermally and swelled in size from 71.58?4.28 to 160.80?9.51 nm,which was beneficial for particle retention in the tumor sites and release of the loaded ***,GNP-DOX/ICG showed a size reduction of the particles to 33.24?4.11 nm and further improved drug release with the degradation of overexpressed MMP-2 in *** the subsequently performed in vitro experiments,it was confirmed that GNP-DOX/ICG could provide a therapeutic effect that was enhanced and ***,GNP-DOX/ICG could efficiently suppress the growth of 4 T1 tumor in *** conclusion,this study may provide a promising strategy in the rational design of drug delivery nanosystems based on gelatin for chemo-photothermal therapy to achieve synergistically enhanced therapeutic efficacy against breast cancer.

关键词： Breast cancer Gelatin Indocyanine green Doxorubicin Nanoparticle Size-variable Chemoephotothermal therapy MMP-2

Characterization ofα_(2)Precipitates in Ti–6Al and Ti–8Al Binary Alloys:A Comparative Investigation

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Acta Metallurgica Sinica(English Letters) 2021年第5期34卷 710-718页

作者： Sabry S.Youssef Xiaodong zheng Yingjie Ma Sensen Huang Min Qi Jianke Qiu Ruixue Zhang Peitao Hua Shijian zheng jiafeng Lei Rui Yang School of Materials Science and Engineering University of Science and Technology of ChinaShenyang110016China Institute of Metal Research Chinese Academy of SciencesShenyang110016China Innovation Group of Marine Engineering Materials and Corrosion Control Southern Marine Science and Engineering Guangdong LaboratoryZhuhai519080China School of Materials Science and Engineering Northeastern UniversityShenyang110819China Hunan Goldsky Titanium Industry Technology Co. LtdChangde415001China School of Materials Science and Engineering Research Institute for Energy Equipment MaterialsHebei University of TechnologyTianjin300130China

Transmission electron microscopy(TEM)and atom probe tomography(APT)techniques were used to investigate the nanoscale orderedα_(2)(Ti_(3)Al)precipitates in Ti–Al binary ***–6Al and Ti–8Al binary alloys were solution treated and aged to obtain Widmanstatten microstructure and promoteα_(2)*** TEM results displayed strong short-range ordering ofα_(2)precipitates in Ti–8Al alloy,while no evidence of the superlattice reflections ofα_(2)in Ti–6Al *** results acquired from APT showed theα_(2)clusters and atoms distribution at the interface between the matrix andα_(2)*** size and morphology ofα_(2)particles in Ti–8Al alloy,respectively,obtained by TEM and APT are closely ***,the APT results displayed tiny size clusters in Ti–6Al alloy,which supposed to give evidence of the initial ordering process ofα_(2)precipitates in the absence of correlative results from TEM.

关键词： Ti–Al binary alloys Ti_3Al precipitates Transmission electron microscopy Atom probe tomography

Research on Scientifically and Rationally Promoting the Fallow of Cultivated Land under the Strategy of Rural Revitalization

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Asian Agricultural Research 2019年第9期11卷 24-26,34页

作者： Ai MA Jun zheng jiafeng YU College of Economics and Management Yangtze UniversityJingzhou 434023China Yangtze River Delta Economics and Social Development Research Center Yangtze UniversityJingzhou 434023China Hubei Rural Development Research Center Jingzhou 434023China

Implementing the rural revitalization strategy is an important decision-making arrangement made by the party s 19th National Congress,and is the general grasp of the work of"agriculture,rural areas and farmers"in the new *** rural development,the issue of cultivated land is an important way to promote poverty alleviation in the vast rural areas and build a well-off society in an all-round *** combination with the fact that the current quality of cultivated land resources in China is not high and the basic fertility has been continuously declining caused due to pollution,China must promote a scientific and rational system of arable land fallow to ensure the further development of agricultural modernization in *** the process of researching the implementation of the arable land fallow system,the problems of land abandonment and"non-agriculturalization"after farmland fallow,the willingness of farmers to fallow and the subsidy for farmland fallow have been *** response to the problems above,corresponding policy recommendations are put forward in order to better promote the process of arable land fallow and poverty alleviation in China.

关键词： Rural revitalization Arable land fallow Agricultural modernization Poverty alleviation

SNR and Carrier Phase Estimation of BPSK Signal

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SNR and Carrier Phase Estimation of BPSK Signal