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Diatomic Fe-Fe catalyst enhances the ability to degrade organic contaminants by nonradical peroxymonosulfate activation system

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Nano Research 2023年第4期16卷 4678-4684页

作者： Minghua Li Jinxing Chen Weiwei wu Shuangli wu Lili Xu Shaojun Dong College of Chemistry Jilin UniversityChangchun 130012China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China University of Science and Technology of China Hefei 230026China

Atomically dispersed catalysts have been widely studied due to their high catalytic activity and atom ***-atom catalysts have achieved breakthrough progress in the degradation of emerging organic contaminants(EOCs)by activating peroxymonosulfate(PMS).However,the construction of atomically dispersed catalysts with diatomic/multiatomic metal active sites by activating PMS to degrade pollutants is still seldom reported,despite the unique merits of atom-pair in synergistic electronic modulation and breaking stubborn restriction of scaling relations on catalytic *** have synthesized Fe1-N-C,Fe_(2)-N-C,and Fe_(3)-N-C catalysts with monoatomic iron,diatomic iron,and triatomic iron active center,*** results show that the catalytic degradation activity of Fe_(2)-N-C is twice that of Fe1-N-C and Fe_(3)-N-C due to its unique Fe_(2)N6 coordination structure,which fulfilled the complete degradation of rhodamine B(RhB),bisphenol A(BPA),and 2,4-dichlorophenol(2,4-DP)within 2 *** paramagnetic resonance(EPR)and radical quenching experiments confirmed that the reaction was a nonradical reaction on the catalyst *** singlet oxygen and Fe(IV)are the key active species.

关键词： diatomic catalyst peroxymonosulfate nonradical contaminant

A Characterization of Some Weighted Inequalities for the Vector-valued Weighted Maximal Function

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Acta Mathematica Sinica,English Series 2010年第11期26卷 2191-2198页

作者： Cui Lan wu School of Mathematical Science Xuzhou Normal University Xuzhou 221116 P. R. China

We give in this paper a necessary and sufficient condition of weighted weak and strong type norm inequalities for the vector-valued weighted maximal function.

关键词： Ap(ω) family vector-valued weighted maximal function weighted inequalities HSlder'sinequality

Basal Energy Expenditure of Chinese Healthy Adults:Comparison of Measured and Predicted Values

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Biomedical and Environmental Sciences 2020年第8期33卷 566-572页

作者： MAO De Qian wu Jing Huan HUANG Cheng Yu LI Ke Ji LIU Xiao Li ZHANG Shi Lian WANG Yan ling CHEN Wei LI Ming YANG Xiao Guang PIAO Jian Hua Key Laboratory of Trace Element Nutrition of National Health Commission of the People’s Republic of China Department of Trace Element NutritionNational Institute for Nutrition and HealthChinese Center for Disease Control and PreventionBeijing 100050China West China School of Public Health Sichuan UniversityChengdu 610041SichuanChina School of Public Health Peking UniversityBeijing 100191China Shenzhen Center for Chronic Disease Control Shenzhen 518055GuangdongChina Hebei Province Center for Disease Prevention and Control Shijiazhuang 050021HebeiChina Mudanjiang Center for Disease Prevention and Control Mudanjiang 157020HeilongjiangChina Peking Union Medical College Hospital Beijing 100730China

Objective This study aimed to measure the basal energy expenditure(BEE)of Chinese healthy adults and establish an accurate predictive equation for this *** In total,470 Chinese healthy adults had their BEE measured using the Cosmed K4b2 portable metabolic *** linear regression analysis was applied to develop new optimal equations for predicting *** bias,accuracy rate,concordance correlation coefficient(CCC),and root mean square error(RMSE)were used to evaluate the accuracy of the predictive *** There was a significant difference in BEE between males and females,with 5,954 kJ/d and 5,089 kJ/d,*** living in rural areas expended significantly higher BEE(5,885 kJ/d)than those in urban areas(5,279 kJ/d).Previous equations developed by Henry,Schofield,Harris-Benedict(HB),and Liu overestimated the BEE of Chinese healthy *** new equations derived from the present study displayed the smallest average bias and RMSE from the measured basal energy expenditure(mBEE).The CCC of the new equations was higher than other predictive equations,but it was lower than *** was no significant difference in the accuracy rate among all predictive *** Sex and regional differences in BEE were observed in Chinese healthy *** the widely used previous predictive equations nor the one derived in the present study were accurate enough for estimating the BEE of Chinese healthy *** study is required to develop more accurate equations for predicting the BEE of Chinese healthy adults aged between 20–45 years.

关键词： Basal energy expenditure Chinese healthy adults Indirect calorimetry Predictive equations

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环氧树脂基自发光路面材料设计与性能研究

中国公路学报 2022年第7期35卷 67-77页

作者：蒋玮白灵强周博吴旺杰沙爱民长安大学特殊地区公路工程教育部重点实验室陕西西安710064

路面的夜间能见度是影响行车安全性的关键因素,开发应用具有自蓄能自发光特征的新型发光路面材料对提升路面功能与行车安全性具有重要意义。通过引入SrAlO:Eu,Dy铝酸盐基长余辉材料,并以具有透光效果的环氧树脂作为胶结料设计了一种超... 详细信息

路面的夜间能见度是影响行车安全性的关键因素,开发应用具有自蓄能自发光特征的新型发光路面材料对提升路面功能与行车安全性具有重要意义。通过引入SrAlO:Eu,Dy铝酸盐基长余辉材料,并以具有透光效果的环氧树脂作为胶结料设计了一种超薄磨耗层形式的环氧树脂基自发光路面材料,根据拉伸强度与断裂伸长率明确了胶结料各组分的最佳配比,基于抗折强度与空隙率确定了混合料中胶结料的最佳用量,并设计了6种不同长余辉材料掺量的混合料,测试了室内与室外不同光环境下的自发光路面材料的余辉特性并评价了其路用性能和长期耐久性能。研究结果表明:环氧树脂结合料各组分的最佳配比(质量比)为环氧树脂∶增韧剂∶固化剂=1∶0.11∶0.17,且混合料中其最佳用量为9%;自发光混合料的余辉衰减存在前期的快速降低和后期的相对稳定2个发展阶段,并且长余辉材料掺量与余辉亮度存在线性关系,此外粒径较大的长余辉材料更有利于混合料的余辉效果;不同激发条件仅对自发光混合料的初始发光效果有明显影响,经过快速衰减阶段后不同激发条件的自发光混合料亮度趋于稳定且一致;环氧树脂基自发光材料具有优异的高温稳定性能、低温抗裂性能和表面抗滑性能,并且紫外老化对其力学性能影响十分有限;较长时间(7~21 d)的浸水会降低自发光混合料的发光效果,但发光效果不会随着浸水时间的继续增加而持续降低,这是由于环氧树脂包裹长余辉材料而隔绝了水分,证明了环氧树脂基自发光混合料具有良好的耐久性能。

关键词：道路工程自发光路面耐久性能环氧树脂基胶结料材料设计余辉特征

Mechanoadaptive morphing gel electrolyte enables flexible and fast-charging Zn-ion batteries with outstanding dendrite suppression performance

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Nano Research 2022年第3期15卷 2030-2039页

作者： Faqing Cao Baohu wu Tianyu Li Shengtong Sun Yucong Jiao Peiyi wu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry Chemical Engineering and Biotechnology&Center for Advanced Low-dimension MaterialsDonghua UniversityShanghai 201620China Jülich Centre for Neutron Science(JCNS)at Heinz Maier-Leibnitz Zentrum(MLZ)Forschungszentrum Jülich Lichtenbergstr.185748 GarchingGermany Division of Energy Storage Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

The safe,flexible,and environment-friendly Zn-ion batteries have aroused great interests ***,flagrant Zn dendrite uncontrollably grows in liquid electrolytes due to insufficient surface protection,which severely impedes the future applications of Zn-ion batteries especially at high current *** electrolytes are emerging to tackle this issue,yet the required high modulus for inhibiting dendrite growth as well as concurrent poor interfacial contact with roughened Zn electrodes are not easily reconcilable to regulate the fragile Zn/Zn^(2+) *** we demonstrate,such a conflict may be defeated by using a mechanoadaptive cellulose nanofibril-based morphing gel electrolyte(MorphGE),which synergizes bulk compliance for optimizing interfacial contact as well as high modulus for suppressing dendrite ***,by anchoring desolvated Zn^(2+) on cellulose nanofibrils,the side reactions which induce dendrite formation are also significantly *** a result,the MorphGE-based symmetrical Zn-ion battery demonstrated outstanding stability for more than 100 h at the high current density of 10 mA·cm^(−2) and areal capacity of 10 mA·h·cm^(−2),and the corresponding Zn-ion battery delivered a prominent specific capacity of 100 mA·h·g^(−1) for more than 500 cycles at 20 *** present example of engineering the mechanoadaptivity of gel electrolytes will shed light on a new pathway for designing highly safe and flexible energy storage devices.

关键词： Zn-ion batteries dendrite growth interfacial adaptivity gel electrolytes fast-charging

Boosting Transport Kinetics of Ions and Electrons Simultaneously by Ti3C2Tx(MXene)Addition for Enhanced Electrochromic Performance

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Nano-Micro Letters 2021年第1期13卷 381-393页

作者： Wenting wu Huajing Fang Hailong Ma Liangliang wu Wenqing Zhang Hong Wang State Key Laboratory for Mechanical Behavior of Materials School of Material Science and EngineeringXi’an Jiaotong UniversityXi’an 710049People’s Republic of China School of Electronic and Information Engineering and State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049People’s Republic of China Department of Physics Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Shenzhen Engineering Research Center for Novel Electronic Information Materials and Devices Southern University of Science and TechnologyShenzhen 518055People’s Republic of China

Electrochromic technology plays a significant role in energy conservation,while its performance is greatly limited by the transport behavior of ions and ***,an electrochromic system with overall excellent performances still need to be *** motivated by the high ionic and electronic conductivity of transition metal carbide or nitride(MXene),we design a feasible procedure to synthesize the MXene/WO3−x composite electrochromic *** consequently boosted electrochromic performances prove that the addition of MXene is an effective strategy for simultaneously enhancing electrons and ions transport behavior in electrochromic *** MXene/WO3−x electrochromic device exhibits enhanced transmittance modulation and coloration efficiency(60.4%,69.1 cm^2 C^−1),higher diffusion coefficient of Li+and excellent cycling stability(200 cycles)over the pure WO3−x ***,numerical stimulation theoretically explores the mechanism and kinetics of the lithium ion diffusion,and proves the spatial and time distributions of higher Li+concentration in MXene/WO3−x composite electrochromic *** experiments and theoretical data reveal that the addition of MXene is effective to promote the transport kinetics of ions and electrons simultaneously and thus realizing a high-performance electrochromic *** work opens new avenues for electrochromic materials design and deepens the study of kinetics mechanism of ion diffusion in electrochromic devices.

关键词： Electrochromic Mxene Transport kinetics Ionic conductivity Tungsten oxide

Robust Controller Design for a Morphing Aircraft Based on SRAD

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Robust Controller Design for a Morphing Aircraft Based on SR...

Reverse immune suppressive microenvironment in tumor draining lymph nodes to enhance anti-PD1 immunotherapy via nanovaccine complexed microneedle

第26届中国控制与决策会议

作者： ZHANG jie wu Sen-Tang School of Automation Science and Electrical Engineering Beijing University of Aeronautics and Astronautics

Military and civil aviation are requiring higher performance for the aircrafts in recent years. The morphing techniques can effectively improve aircraft’s performance to meet the customer’s multi-mission requirement for th aircraft. To get the optimal aerodynamic performance under different flight conditions, the aircraft must change it aerodynamic configuration adaptive to specific condition. In the changing process, the aircraft’s characteristics, such a aerodynamic coefficients, center of weight, and moment of inertia, will change significantly. A robust controller for th variable-sweep and variable-span aircraft is designed based on the Stochastic Robustness Analysis and Design(SRAD method. The morphing and maneuvering process is simulated with a morphing UAV’s nonlinear model. The result show that the pitch angle can track step command during the aircraft’s morphing process, and the controller has strong robust performance.

关键词： Morphing Aircraft Robust Control Variable-Span Variable-Sweep Stochastic Robustness Analysis and Design

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Nano Research 2020年第6期13卷 1509-1518页

作者： Zhongzheng Zhou Jianhui Pang Xuanjin wu Wei wu Xiguang Chen Ming Kong College of Marine Life Science Ocean University of China5 Yushan RoadQingdao266003China Qingdao National Laboratory for Marine Science and Technology Wenhai RoadQingdao266237China

The maturation of dendritic cells(DCs)and infiltration effector T cells in tumor-draining lymph node(tdLN)and tumor tissue are crucial for *** constructive progresses have been made with anti-programmed death-1(anti-PD1)checkpoint blockade for immunotherapy,the efficacy of PD1/PD-L1 therapy deserves to be ***,we constructed a novel transfersomes based nanovaccine complexed microneedles to enhance anti-PD1 immunotherapy via transdermal immunization for skin tumor *** were functionalized with DCs targeting moietyαCD40,co-encapsulated with antigens and adjuvant poly I:***,transdermal administration promoted accumulation in tumor-draining lymph nodes(tdLN),which could facilitate cellular uptake,activate DCs maturation and enhance Th1 immune *** a mouse melanoma model,combined therapy of such nanovaccine complexed microneedles with pembrolizumab(αPD1)was able to enhance cytotoxic T lymphocytes activation,promote infiltration and reduce regulatory T cells frequency in tdLN and tumor tissues,which achieved reversion of the immunosuppressive microenvironment into immune *** study highlighted the potential of transfersomes based nanovaccines complexed microneedles as an attractive platform for tumor immunotherapy.

关键词： transfersomes microneedles immunosuppressive microenvironment tumor draining lymph node αPD1

Reconstruction algorithm for cross-waveband optical computing imaging

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Chinese Physics B 2024年第10期33卷 233-239页

作者： Jin-Tao Xie Shu-Hang Bie Ming-Fei Li Yuan-Jin Yu Yi-Fei Li Jin-Guang Wang Bao-Gang Quan ling-An wu Institute of Physics Chinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China School of Automation Beijing Institute of TechnologyBeijing 100081China

In a single-pixel fast imaging setup,the data collected by the single-pixel detector needs to be processed by a computer,but the speed of the latter will affect the image reconstruction *** we propose two kinds of setups which are able to transform non-visible into visible light imaging,wherein their computing process is replaced by a camera integration *** image captured by the camera has a low contrast,so here we present an algorithm that can realize a high quality image in near-infrared to visible cross-waveband *** scheme is verified both by simulation and in actual *** setups demonstrate the great potential for single-pixel imaging and high-speed cross-waveband imaging for future practical applications.

关键词： optical computing imaging single-pixel imaging