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Three-Dimensional Cobalt Hydroxide Hollow Cube/Vertical Nanosheets with High Desalination Capacity and Long-Term Performance Stability in Capacitive Deionization

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Research 2021年第1期2021卷 606-619页

作者： Yuecheng Xiong Fei Yu Stefanie Arnold Lei Wang Volker Presser yifan ren Jie Ma State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Research Center for Environmental Functional Materials College of Environmental Science and EngineeringTongji University1239 Siping RoadShanghai 200092China College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai 201306China INM-Leibniz Institute for New Materials 66123 SaarbrückenGermany Department of Materials Science and Engineering Saarland University66123 SaarbrückenGermany Saarene-Saarland Center for Energy Materials and Sustainability 66123 SaarbrückenGermany Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

Faradaic electrode materials have significantly improved the performance of membrane capacitive deionization,which offers an opportunity to produce freshwater from seawater or brackish water in an energy-efficient ***,Faradaic materials hold the drawbacks of slow desalination rate due to the intrinsic low ion diffusion kinetics and inferior stability arising from the volume expansion during ion intercalation,impeding the engineering application of capacitive ***,a pseudocapacitive material with hollow architecture was prepared via template-etching method,namely,cuboid cobalt hydroxide,with fast desalination rate(3.3 mg(NaCl)·g^(-1)(h-Co(OH)2)·min^(-1)at 100 mA·g^(-1))and outstanding stability(90%capacity retention after 100 cycles).The hollow structure enables swift ion transport inside the material and keeps the electrode intact by alleviating the stress induced from volume expansion during the ion capture process,which is corroborated well by in situ electrochemical dilatometry and finite element ***,benefiting from the elimination of unreacted bulk material and vertical cobalt hydroxide nanosheets on the exterior surface,the synthesized material provides a high desalination capacity(117±6 mg(NaCl)·g^(-1)(h-Co(OH)2)at 30 mA·g^(-1)).This work provides a new strategy,constructing microscale hollow faradic configuration,to further boost the desalination performance of Faradaic materials.

关键词： electrode cobalt Cube

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Extremely efficient electro-Fenton-like Sb(Ⅲ) detoxification using nanoscale Ti-Ce binary oxide: An effective design to boost catalytic activity via non-radical pathway

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Chinese Chemical Letters 2021年第8期32卷 2519-2523页

作者： yifan ren Yanbiao Liu Fuqiang Liu Fang Li Chensi Shen Zhuangchun Wu Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection College of Environmental Science and EngineeringDonghua UniversityShanghai 201620China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Institute of Functional Materials Donghua UniversityShanghai 201620China

Environmental risks posed by discharge of the emerging contaminant antimony(Sb) into water bodies have raised global concerns *** toxicity of Sb has been shown to be species-dependent,with Sb(Ⅲ) demonstrating much greater toxicity than Sb(V).Here,we proposed an electrochemical filtration system to achieve rapid detoxification of Sb(Ⅲ) via a non-radical *** key to this technology was an electroactive carbon nanotube filter functionalized with nanoscale Ti-Ce binary *** an electric field,in situ generated H_(2) O_(2) could react with the Ti-Ce binary oxide to produce hydroperoxide complexes,which enabled an efficient transformation of Sb(Ⅲ) to the less toxic Sb(V)(τ 90% was achieved using lake water spiked with Sb(Ⅲ) at 500 μg/*** results showed that Ti/Ce-hydroperoxo surface complexes were the dominant species responsible for the non-radical oxidation of Sb(Ⅲ) based on extensive experimental evidences and advanced *** study provides a robust and effective strategy for the detoxification of water containing Sb(Ⅲ) and other similar heavy metal ions by integrating state-of-the-art advanced oxidation processes,electrochemistry and nano-filtration technology.

关键词： Sb(Ⅲ)detoxification Ti-Ce binary oxide Electro-Fenton-like Non-radical mechanism Continuous flow

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Theoretical energy consumption analytical method for metal separation process

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Journal of Thermal Science 2010年第4期19卷 377-382页

作者： Dehong XIA,Yingchun SHANG,Ling ren and yifan LI Department of Thermal Engineering,University of Science and Technology Beijing,Beijing 100083 Department of Thermal Engineering University of Science and Technology Beijing Beijing China

The theoretical energy consumption(TEC)analytical methods and the calculated models for the electrolytic and thermal reduction metal separation processes have been put forward based on thermodynamics and physical chemistry principles,providing theoretical foundation for choosing the optimum metal separation *** on the models,the TECs of the Mg separation processes are taken as an example,and have been calculated and analyzed contrastively,including the MgCl_2 electrolytic method,the MgO electrolytic method with inert electrode and with carbon anode,and the silicothermic *** is shown that the thermal method is more reasonable than the electrolytic methods to separate Mg under low efficiency of coal power generation.

关键词： metal separation theoretical energy consumption electrolysis thermal reduction

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The Influence and Treatment of the Intestinal Microbiome on Child Respiratory Diseases

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Infectious Microbes & Diseases 2020年第3期2卷 107-114页

作者： Chuanxin Zhang Junlin Huang yifan ren Shenghong Zhu Fangxue Yin Yixin Zhu Shaoxin Keqiao Women&Children's Hospital ShaoxingZhejiangChina College of Pharmacy University of MichiganAnn ArborMichiganUSA Shulan International Medical College Shulan(Hangzhou)Hospital Affiliated to Zhejiang Shuren UniversityHangzhouZhejiangChina

The intestinal microbiome has a great influence on human health through its close interaction with the human body,including growth,development,maturation,immunity,and *** studies have reported that the intestinal microbiome is related to the pathogenesis,diagnosis,and treatment of *** clinical interventions,such as prebiotics and probiotics have been widely used to cure ***,probiotics might suffer from viability ***,new technologies are being exploited to solve these *** this review,we describe the correlation between the intestinal microbiome and children respiratory diseases,present therapies based on microecological theory,and introduce some new technologies aimed to improve the efficacy of microbiological therapies.

关键词： microbiota pediatric respiratory disease probiotics fecal microbiota transplantation

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Preparation and study of novel mid-to-low-temperature phase-change molten salts

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Science China Technological Sciences 2025年

作者： Chenxing ren yifan WANG Xin HE Chenghang ZHENG Xiang GAO State Key Laboratory of Clean Energy Utilization Zhejiang University Institute of Carbon Neutrality Zhejiang University Baima Lake Laboratory Zhejiang University

Molten salts is a promising medium for heat storage and heat transfer due to their advantages of low cost, low steam pressure, high energy storage density and wide temperature range. In this paper, a new phase change mixture of molten salts with KNO3, NaNO3, ZnCl2, NaF, Na2CO3, NaCl, and MgO as materials has been prepared through a plenty of experiments. The experimental results show that the melting point of some molten salts can be reduced to 202.9°C, and the decomposition temperature can reach 701.3°C. In addition, its thermophysical properties, including specific heat, viscosity and thermal stability, were measured and analyzed. The average specific heat of some molten salts is as high as 2.53 J/（g K）, and the average thermal conductivity is as high as 0.77 W/（m K）. In the 4-day short-term thermal stability test, the fluctuation of each parameter is minimal, and the overall thermal physical property is relatively stable. Compared with the traditional phase change molten salt, the new hybrid molten salt has a significantly lower melting point, a further improvement in the decomposition temperature, specific heat and other comprehensive thermophysical properties, and a better overall economy, which has important application value in heat transfer and energy storage.

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农村金融与饲料企业经济发展的协调性研究

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中国饲料 2020年第18期 127-130页

作者：任奕繁首都师范大学管理学院北京100048

农村金融是我国饲料企业规模化经营的重要保障,直接关系着饲料企业经济发展的质效。为了推动农村金融与饲料企业经济发展的协同并进,必须掌握农村金融在提升饲料企业市场竞争力、培养信用理念、提供精准扶持的协调性原理,进而逐步破解... 详细信息

农村金融是我国饲料企业规模化经营的重要保障,直接关系着饲料企业经济发展的质效。为了推动农村金融与饲料企业经济发展的协同并进,必须掌握农村金融在提升饲料企业市场竞争力、培养信用理念、提供精准扶持的协调性原理,进而逐步破解农村金融支持额度难以满足饲料企业的多元需求、农村金融服务方式难以契合饲料企业的现实需求、农村金融风险管控难以释放饲料企业的有效需求等协调性困境,通过拓展农村金融服务功能、着力发展产业链金融、重点扶持新基建项目、逐步培养信用环境等行动策略,有助于增强农村金融与饲料企业经济发展的协调性,为饲料企业高质量发展注入新动能。

关键词：农村金融饲料企业协调性

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Raman signal enhancement for gas detection using a dual near-concentric cavities group

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Chinese Optics Letters 2024年第5期22卷 47-52页

作者：任一凡杨德旺孙颖欣许家旋刘硕芳陈月娥 Key Laboratory for Microstructural Material Physics of Hebei Province School of ScienceYanshan UniversityQinhuangdao 066004China College of Ocean Science and Engineering Shandong University of Science and TechnologyQingdao 266590China

Effective methods are urgently required to optimize Raman spectroscopy technology to ameliorate its low detection ***,we superposed two near-concentric cavities to develop a dual near-concentric cavities group(DNCCG)to assess its effect on gas Raman signal intensity,signal-to-noise ratio(SNR),and limit of detection(LOD).The results showed that DNCCG generally had higher CO_(2) Raman signal intensity than the sum of two near-concentric ***,the noise intensity of DNCCG was not enhanced by the superposition of near-concentric ***,DNCCG increased the *** LOD for CO_(2) was 24.6 parts per *** could be an effective method to improve the detection capability of trace gases and broaden the dynamic detection range,which might aid the future development of innovative technology for multicomponent gas detection.

关键词： Raman spectroscopy gas detection sensitivity dual near-concentric cavities group

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我国财政政策对经济增长的影响研究——基于向量自回归模型分析

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价格理论与实践 2020年第12期 91-94,163页

作者：孙飞任奕繁首都师范大学管理学院新加坡南洋理工大学

财政政策在我国宏观调控中起到了重要的作用。财政政策对经济增长的拉动效应一直是学术界关注的聚焦点。基于此背景,本文首先对亚洲金融危机、全球金融危机、新冠疫情等突发危机造成经济波动下的财政政策调控效应进行理论阐述,然后建立... 详细信息

财政政策在我国宏观调控中起到了重要的作用。财政政策对经济增长的拉动效应一直是学术界关注的聚焦点。基于此背景,本文首先对亚洲金融危机、全球金融危机、新冠疫情等突发危机造成经济波动下的财政政策调控效应进行理论阐述,然后建立财政政策效应与经济增长的向量自回归模型及相关指标模型,选取2001年至2019年的数据进行实证分析,并对财政收入、税收、工业产出以及消费价格水平进行格兰杰因果检验和脉冲函数响应。研究发现:财政支出和税收对工业产出的波动冲击是有效相关的,同时这两种政策有利于平抑经济波动,拉动经济增长。总体来看,税收政策短期内可以达到稳定波动的作用,但从长期来看,调整财政支出对于经济的波动减缓是有效的。

关键词：新冠疫情财政政策经济增长向量自回归模型

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城市更新背景下传统商圈交通韧性提升策略研究--以郑州二七广场为例

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交通与港航 2022年第3期9卷 56-62页

作者：任逸帆同济大学建筑设计研究院(集团)有限公司交通规划设计院

二七广场位于郑州市区中心,是郑州市历史最悠久的商圈之一,用地功能复合,交通情况复杂。2020年,借二七广场城市更新的契机,对广场及周边区域的交通系统进行宏观梳理与规划,有效提升了二七广场区域的交通韧性,支撑传统商圈的可持续发展... 详细信息

二七广场位于郑州市区中心,是郑州市历史最悠久的商圈之一,用地功能复合,交通情况复杂。2020年,借二七广场城市更新的契机,对广场及周边区域的交通系统进行宏观梳理与规划,有效提升了二七广场区域的交通韧性,支撑传统商圈的可持续发展。该文从项目出发,结合传统商圈的共性发展特征,从缓解交通系统压力、强化交通系统弹性、提升交通系统应变能力三个方面,提出适用于传统商圈交通韧性的提升策略。

关键词：交通韧性传统商圈城市更新智慧交通老城区交通

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汽车跟车巡航中纵向滑模控制算法

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计算机应用与软件 2023年第11期40卷 87-92页

作者：刘陈孙后环任一凡南京工业大学机械与动力工程学院江苏南京211816

在智能汽车自适应跟车控制的实现中,提高控制精度和舒适性尤为重要。通过上层算法准确计算本车需求加速度,考虑安全性及舒适度,设计变时距跟车策略,基于响应快速鲁棒性较好的滑模变结构控制算法实现跟车巡航,并对滑模趋近率加以优化改进... 详细信息

在智能汽车自适应跟车控制的实现中,提高控制精度和舒适性尤为重要。通过上层算法准确计算本车需求加速度,考虑安全性及舒适度,设计变时距跟车策略,基于响应快速鲁棒性较好的滑模变结构控制算法实现跟车巡航,并对滑模趋近率加以优化改进,以减小系统抖震。对于下层执行机构,进行实车实验,以此对比验证仿真中发动机逆模型和制动器逆模型的合理性,使其更符合真实响应状态。将以传统PID算法为跟车策略的实车实验与改进后的仿真跟车算法对比分析,通过Carsim车辆参数建模软件和MATLAB/Simulink联合仿真,节气门开度同制动主缸压力作为Carsim的输入信号实现对车辆的闭环控制。结果表明车辆控制的精确性和舒适性都显著提升,同时跟车距离更具安全性。

关键词：跟车巡航控制可变跟车时距策略滑模控制特殊指数趋近率

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