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

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

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药物溶血实验检测方法研究进展

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安徽医药 2017年第3期21卷 424-427页

作者：冷毅伦刘建莉徐佳奇马佳凤曾如梦林恒秀海南医学院临床学院海南海口571199 海南医学院第一附属医院海南省创伤与灾难救援研究重点实验室海南海口571199

对现阶段多种药物溶血实验方法进行了对比研究,并依据红细胞破坏量、红细胞内容物释放等进行分类,发现干化学法替代氰化高铁法、4-氨基安替比林法替代甲联苯胺法等进行溶血试验可提高结果的精确度,更加便利和高效。由此,为药物生物安全... 详细信息

对现阶段多种药物溶血实验方法进行了对比研究,并依据红细胞破坏量、红细胞内容物释放等进行分类,发现干化学法替代氰化高铁法、4-氨基安替比林法替代甲联苯胺法等进行溶血试验可提高结果的精确度,更加便利和高效。由此,为药物生物安全性评价提供参考方法和依据。

关键词：血液学试验分光光度法,紫外线吸光度测定法胶体金免疫层析法

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2017—2022年上海市浦东新区手足口病聚集性疫情特征分析

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上海预防医学 2024年第5期36卷 439-443页

作者：陈家凤张安冉徐红梅顾霍铮叶楚楚王远萍上海市浦东新区疾病预防控制中心上海200136

【目的】分析2017—2022年上海市浦东新区手足口病聚集性疫情流行病学和病原体特征,为浦东新区手足口病疫情防控提供科学依据。【方法】通过浦东新区手足口病聚集性疫情数据库获取2017—2022年手足口病聚集性疫情相关数据,描述性分析疫... 详细信息

【目的】分析2017—2022年上海市浦东新区手足口病聚集性疫情流行病学和病原体特征,为浦东新区手足口病疫情防控提供科学依据。【方法】通过浦东新区手足口病聚集性疫情数据库获取2017—2022年手足口病聚集性疫情相关数据,描述性分析疫情波及范围、季节性特征、场所分布以及病原学构成。【结果】2017—2022年浦东新区共报告手足口病聚集性事件2547起,涉及病例8884例,平均每起事件发病数为3.49例,其中2~4例病例数占比最高(78.52%)。2017—2019年及2021年手足口病聚集性疫情报告高峰为夏峰5—7月和秋峰9—11月,2020年及2022年受新型冠状病毒感染疫情影响季节性不明显。手足口聚集性疫情主要发生在幼托机构(44.64%),其次为家庭/居委(44.21%),学校占比较少(12.39%)。病原呈多种肠道病毒基因型并存,阳性检出率为60.46%,且CoxA6为优势毒株。【结论】浦东新区手足口病聚集性疫情呈现波动趋势,不同年份事件数差别较大,流行季节为夏季和秋季,优势毒株为CoxA6。新型冠状病毒感染防控期间的各项措施显著降低了手足口病聚集性疫情的发生,未来仍须加强监测,关注重点机构大规模聚集性疫情的发生。

关键词：手足口病聚集性疫情病原学流行特征浦东新区

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Comprehensive safety evaluation method of surrounding rock during underground cavern construction

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Underground Space 2021年第1期6卷 46-61页

作者： Qingwen Ren Lei xu Aixi Zhu Mingzhang Shan Linfei Zhang jiafeng Gu Lei Shen College of Mechanics and Materials Hohai UniversityNanjing 210098China College of Water Conservancy and Hydropower Engineering Hohai UniversityNanjing 210098China Shanghai Tongyan Civil Engineering Technology Co.Ltd. China China Resources Land Ltd. WeihaiChina

The deformation instability of surrounding rock and the collapse of rock blocks are two common failure modes observed during the construction of underground ***,a comprehensive safety evaluation method(CSEM)of surrounding rock for application during underground cavern construction is presented in this *** method can be used to evaluate the deformation stability of surrounding rock and predict the collapse of rock blocks,***,a deformation stability prediction and evaluation method(DSPEM)for rock mass is *** combines the safety evaluation method based on a deformation statistical analysis and an inverse deformation prediction method using measured deformation data of surrounding *** approach possesses the unique characteristics of complementary and mutual *** addition,a comprehensive early-warning index system(CWIS)for assessing the deformation stability of surrounding rock is *** consists of three types of warning indicators and three levels of warning *** earlywarning values can be adjusted reasonably by the prediction correction method according to the measured *** the collapse of rock blocks controlled by structural surfaces,a rapid prediction method of rock block collapse(RPMBC)based on the block theory is then ***,combining the DSPEM,RPMBC,and CWIS,the CSEM of surrounding rock for assessing the safety of cavern construction is *** can provide technical support for decision making on the safety of surrounding rock during the construction of underground caverns.

关键词： Underground cavern Rock mass Safety evaluation during construction Early warning system

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Peptide-Cross-Linked Protein-Imprinted Polymers: Easy Template Removal and Excellent Imprinting Effect

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CCS Chemistry 2019年第5期1卷 544-552页

作者： Rong xu jiafeng Tian Ying Guan Yongjun Zhang Key Laboratory of Functional Polymer Materials and State Key Laboratory of Medicinal Chemical Biology Institute of Polymer ChemistryCollege of ChemistryNankai UniversityTianjin 300071China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300071China

Molecular imprinting of proteins remains a huge chal-lenge because of two major obstacles:difficulty in template removal and low imprinting ***,we propose a new strategy to simultaneously overcome these two challenges by creating molecu-larly imprinted polymers(MIPs)with nanoscale shape-memorable imprint *** novel MIPs were developed by simply cross-linking the polymers with a peptide cross-linker instead of commonly used *** to the unique pH-induced helix–coil transition of the peptide cross-linker,adjusting the pH from 5.5 to 7.4 leads to an expansion of the imprint cavities,thus facilitating template *** the pH back to 5.5 restores the original size and shape of the imprint cavities due to the precise refolding of peptide.A template protein can there-fore be readily removed under mild conditions,while simultaneously achieving a significantly improved imprinting effect.

关键词： protein-imprinted polymers peptide,helix-coiltransition shapememory stimuli-responsive

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高寒地区临时建筑冬季供暖系统技术经济性分析—以青海格尔木为例

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制冷与空调（四川） 2024年第2期38卷 242-248页

作者：胡浩周小涛骆秋良胡家锋徐鸿佳中国人民解放军75714部队衡阳421000

临时建筑因其可拆卸移动、便于运输组装的特点,在高寒地区具有广阔的应用前景。但临时建筑本身的保温能力差,导致建筑供暖能耗大大增加,加之临时建筑使用寿命周期短。因此,在选择供暖方案时应更注重经济性与技术性的结合。利用DeST软件... 详细信息

临时建筑因其可拆卸移动、便于运输组装的特点,在高寒地区具有广阔的应用前景。但临时建筑本身的保温能力差,导致建筑供暖能耗大大增加,加之临时建筑使用寿命周期短。因此,在选择供暖方案时应更注重经济性与技术性的结合。利用DeST软件对某一临时建筑在青海格尔木地区气候条件下的全年冷、热负荷进行了动态模拟。模拟结果表明,该建筑在格尔木地区的全年累计热负荷为60287.58kWh,全年累计冷负荷为134052.39kWh,格尔木地区冷负荷约为热负荷的2.2倍,绝大部分冷负荷是由厨房炊事和暖棚造成的。当地夏季凉爽,自然通风即可改善室内热舒适而无需空调,故仅需考虑冬季供暖。在分析该临时建筑的采暖方案时,选取了分体式采暖、柴油取暖机、锅炉房+散热器三种采暖方案。柴油取暖机采暖方案的初始投资费用和年运行费用均为最低,分别为2.5万元和14.08万元。结合技术性和经济性综合分析,柴油取暖机为该临时建筑的最优采暖方案。

关键词：高寒地区临时建筑负荷模拟采暖方案

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Formation mechanism of α lamellae during β→α transformation in polycrystalline dual-phase Ti alloys

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Journal of Materials Science & Technology 2021年第12期71卷 98-108页

作者： Jia Sun Min Qi Jinhu Zhang xuexiong Li Hao Wang Yingjie Ma Dongsheng xu jiafeng Lei Rui Yang Institute of Metal Research Chinese Academy of SciencesShenyang 110016China University of Shanghai for Science and Technology Shanghai 200093China University of Chinese Academy of Sciences Beijing 100049China School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China

Phase field simulations incorporating contributions from chemical free energy and anisotropic interfacial energy are presented for theβ→αtransformation in Ti-6 Al-4 V alloy to investigate the growth mechanism ofαlamellae of various morphologies from undercooledβ***αcolony close to realistic microstructure was generated by coupling the Thermo-Calc thermodynamic parameters ofαandβphases with the phase field governing *** simulations show thatαlamellar side branches with feathery morphology can form under a certain combination of interfacial energy anisotropy and temperature.αlamellae tend to grow slowly at high heat treatment temperature and become wider and thicker as temperature increase from 800 to 900℃provided that the interfacial energy anisotropy ratio k_(x):k_(y) was set as 0.1:***,higher interfacial energy anisotropy can accelerate the formation ofαlamellae,and the equilibrium shape ofαlamellae changes from rod to plate as the interface energy anisotropy ratio k_(x):k_(y) vary from 0.1:0.4 to 0.1:0.8 under 820℃.Experiments were conducted to study theαlamellar side branches in Ti-6 Al-4 V(Ti-6.01 Al-3.98 V,wt.%)and Ti-4211(Ti-4.02 A1-2.52 V-1.54 Mo-1.03 Fe,wt.%)alloys with lamellar micro *** backscatter diffraction(EBSD)re sults show thatαlamellar side branches and their related lamellae share the same *** predicted temperature range forαlamellar side branches fo rmation under various interfacial energy anisotropy is consistent with experimental results.

关键词： αLamellae Side branches Ti-6Al-4V Interfacial energy anisotropy Phase field model

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基于资历框架的粤港警务培训合作机制探索

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公安研究 2022年第1期 59-64页

作者：徐佳峰邓丽艳中国人民警察大学移民管理学院广州

资历框架在培训成果认证方面发挥着重要作用,将资历框架引入警察培训工作具有重要意义.借鉴香港警务培训引入资历框架的成功经验,以粤港两地警务培训合作为基础,探索粤港两地资历框架的成功实施。本文提出基于资历框架的粤港警务培训合... 详细信息

资历框架在培训成果认证方面发挥着重要作用,将资历框架引入警察培训工作具有重要意义.借鉴香港警务培训引入资历框架的成功经验,以粤港两地警务培训合作为基础,探索粤港两地资历框架的成功实施。本文提出基于资历框架的粤港警务培训合作机制,包括加强沟通广泛调研,将警务培训课程纳入资历框架认证,建立资历框架运行保障机制,在粤港资历框架合作的基础上,实现警务培训成果互认等四方面的做法,以期构建全新的内地民警培训模式,不断提高警务培训质量.

关键词：粤港警务培训资历框架资历学分成果互认

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Experiments and insights of desalination by a freezing/thawing method at low subcooling

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中国化学工程学报（英文版） 2020年第12期

作者： Jun Chen Jianjian Wu jiafeng xu Qing Yuan Bin Deng Changzhong Chen Zhi Li

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Magnetic two-dimensional van derWaals materials for spintronic devices

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Chinese Physics B 2021年第11期30卷 12-21页

作者： Yu Zhang Hongjun xu jiafeng Feng Hao Wu Guoqiang Yu Xiufeng Han Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Songshan Lake Materials Laboratory Dongguan 523808China

Magnetic two-dimensional(2D)van derWaals(vdWs)materials and their heterostructures attract increasing attention in the spintronics community due to their various degrees of freedom such as spin,charge,and energy valley,which may stimulate potential applications in the field of low-power and high-speed spintronic devices in the *** review begins with introducing the long-range magnetic order in 2D vdWs materials and the recent progress of tunning their properties by electrostatic doping and ***,the proximity-effect,current-induced magnetization switching,and the related spintronic devices(such as magnetic tunnel junctions and spin valves)based on magnetic 2D vdWs materials are ***,the development trend of magnetic 2D vdWs materials is *** review provides comprehensive understandings for the development of novel spintronic applications based on magnetic 2D vdWs materials.

关键词： magnetic two-dimensional van der Waals materials spintronic devices

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