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MOF-mediated synthesis of novel PtFeCoNiMn high-entropy nanoalloy as bifunctional oxygen electrocatalysts for zinc-air battery

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Nano Research 2024年第6期17卷 5288-5297页

作者： Mingkuan Xie Xin Xiao Duojie wu Cheng Zhen chunsheng wu Wenjuan Wang Hao Nian Fayan Li Meng Danny Gu Qiang Xu Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials(SKLPM) Shenzhen 518055China Department of Chemistry Southern University of Science and TechnologyShenzhen 518055China Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China SUSTech-Kyoto University Advanced Energy Materials Joint Innovation Laboratory(SKAEM-JIL) Shenzhen 518055China Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development of Guangdong Southern University of Science and TechnologyShenzhen 518055China Eastern Institute for Advanced Study Eastern Institute of TechnologyNingbo 315200China

High-entropy alloy(HEA)-based materials are expected to be promising oxygen electrocatalysts due to their exceptional properties.The electronic structure regulation of HEAs plays a pivotal role in enhancing their elctrocatalytic ability.Herein,PtFeCoNiMn nanoparticles(NPs)with subtle lattice distortions are constructed on metal-organic framework-derived nitrogen-doped carbon by an ultra-rapid Joule heating process.Thanks to the modulated electronic structure and the inherent cocktail effect of HEAs,the as-synthesized PtFeCoNiMn/NC exhibits superior bifunctional electrocatalytic performance with a positive half-wave potential of 0.863 V vs.reversible hydrogen electrode(RHE)for oxygen reduction reaction and a low overpotential of 357 mV at 10 mA·cm^(-2)for oxygen evolution reaction.The assembled quasi-solid-state zinc-air battery using PtFeCoNiMn/NC as air electrode shows a high peak power density of 192.16 mW·cm^(-2),low charge−discharge voltage gap,and excellent durability over 500 cycles at 5 mA·cm^(-2).This work demonstrates an effective route for rational design of bifunctional nanostructured HEA electrocatalysts with favorable electronic structures,and opens up a fascinating directions for energy storage and conversion,and beyond.

关键词： oxygen reduction reaction oxygen evolution reaction high-entropy nano-alloy zinc-air battery

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A survey of energy-efficient strategies for federated learning in mobile edge computing

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Frontiers of Information Technology & Electronic Engineering 2024年第5期25卷 645-663页

作者： Kang YAN Nina SHU Tao wu chunsheng LIU Panlong YANG School of Electronic Engineering National University of Defense TechnologyHefei 230009China Department of Computing Hong Kong Polytechnic UniversityHong Kong 999077China School of Computer Science and Technology University of Science and Technology of ChinaHefei 230026China

With the booming development of fifth-generation network technology and Internet of Things,the number of end-user devices(EDs)and diverse applications is surging,resulting in massive data generated at the edge of networks.To process these data eficiently,the innovative mobile edge computing(MEC)framework has emerged to guarantee low latency and enable eficient computing close to the user traffic.Recently,federated learning(FL)has demonstrated its empirical success in edge computing due to its privacy-preserving advantages.Thus,it becomes a promising solution for analyzing and processing distributed data on EDs in various machine learning tasks,which are the major workloads in MEC.Unfortunately,EDs are typically powered by batteries with limited capacity,which brings challenges when performing energy-intensive FL tasks.To address these challenges,many strategies have been proposed to save energy in FL.Considering the absence of a survey that thoroughly summarizes and classifies these strategies,in this paper,we provide a comprehensive survey of recent advances in energy-efficient strategies for FL in MEC.Specifically,we first introduce the system model and energy consumption models in FL,in terms of computation and communication.Then we analyze the challenges regarding improving energy efficiency and summarize the energy-efficient strategies from three perspectives:learning-based,resource allocation,and client selection.We conduct a detailed analysis of these strategies,comparing their advantages and disadvantages.Additionally,we visually illustrate the impact of these strategies on the performance of FL by showcasing experimental results.Finally,several potential future research directions for energy-efficient FL are discussed.

关键词： Mobile edge computing Federated learning Energy-efficient

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A metal-free coordination–insertion ring-opening polymerization of tetrahydrofuran by the central metalloid bis(pentafluorophenyl)(phenoxy)borane

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Chinese Chemical Letters 2024年第3期35卷 419-422页

作者： Cheng wu Yixuan Liu chunsheng Xiao Chenyang Hu Xuan Pang Xuesi Chen Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China

A new strategy for the metal-free coordination–insertion ring-opening polymerization of tetrahydrofuran by the central metalloid Boron has been first identified.Bis(pentafluorophenyl)(phenoxy)borane was used as a catalyst for the polymerization reaction system.And polytetrahydrofuran with high molecular weight and narrow molecular weight distribution could be obtained.The proposed mechanism was studied by MALDI-TOF,ESI-MS and O-18 isotope labeling analyses as a metal-free coordination insertion mechanism.

关键词： Metal-free catalyst Bis(pentafluorophenyl)(phenoxy)borane Coordination–insertion mechanism Ring-opening polymerization Polytetrahydrofuran

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Changes in soil microbial communities induced by warming and N deposition accelerate the CO 2 emissions of coarse woody debris

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Journal of Forestry Research 2023年第4期34卷 1051-1063页

作者： Hankun Wang chunsheng wu Junping Liu Qi Chen Chao Li Chunjie Shu Yi Zhang Yuanqiu Liu Key Laboratory of Silviculture Co-Innovation Center of Jiangxi Typical Trees Cultivation and UtilizationCollege of ForestryJiangxi Agricultural UniversityZhimin Rd.1101Nanchang 330045People’s Republic of China School of Hydraulic and Ecological Engineering Nanchang Institute of TechnologyNanchang 330099People’s Republic of China Lushan Nature Reserve of Jiangxi(Lushan Mountain National Forest Ecological Station) Henan Rd.600Jiujiang 332900People’s Republic of China College of Forestry and Landscape Architecture South China Agricultural UniversityWushan Rd.483Tianhe DistrictGuangzhou 510642People’s Republic of China College of Biology and the Environment Nanjing Forestry UniversityNanjing 210037People’s Republic of China

Warming and nitrogen(N)deposition are two important drivers of global climate changes.Coarse woody debris(CWD)contains a large proportion of the carbon(C)in the total global C pool.The composition of soil microbial communities and environmental changes(i.e.,N deposition and warming)are the key drivers of CWD decomposition,but the interactive impact between N deposition and warming on the composition of soil microbial communities and CWD decomposition is still unclear.In a laboratory experiment,we study and simulate respiration during decomposition of the CWD(C 98)of Cryptomeria japonica(CR)and Platycarya strobilacea(PL)in response to warming and N deposition over 98 days.Resuts show that either warming or N addition signifi cantly accelerated the C 98 of the two tree species by altering the soil microbial community(bacterial:fungi and G+:G–).The combined treatment(warming+N)resulted in a decomposition eff ect equal to the sum of the individual eff ects.In addition,the species composition of bacteria and fungi was obviously aff ected by warming.However,N deposition had a remarkable infl uence on G+:G–.Our results indicated that N deposition and warming will observably alter the composition and growth of the microbial community and thus work synergistically to accelerate CWD decomposition in forest ecosystems.We also present evidence that N deposition and warming infl uenced the composition and balance of soil microbial communities and biogeochemical cycling of forest ecosystems.

关键词： Warming N deposition Coarse woody debris Decomposition Soil microbial community

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Lipidomics and whole-genome sequencing identify lipid profiles in fermented golden pompano(Trachinotus ovatus) inoculated with Bacillus subtilis: Influence of indigenous strains on lipid changes

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Food Science and Human Wellness 2024年

作者： Yanyan wu Huifang Wang Huan Xiang Di Wang chunsheng Li Shengjun Chen Yongqiang Zhao Yueqi Wang Key Laboratory of Aquatic Product Processing Ministry of Agriculture and Rural Affairs National R&D Center for Aquatic Product Processing South China Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Guangxi Colleges and Univerisities Key Laboratory Development and High-value Utilization of Buibu Gulf Seafood Resources College of Food Engineering Beibu Gulf University Co-Innovation Center of Jiangsu Marine Bio-industry Technology Jiangsu Ocean University Collaborative Innovation Center of Seafood Deep Processing Dalian Polytechnic University

Inoculated fermentation enables rapid fermentation of aquatic products. No studies have been conducted on the lipid profiles of inoculated fermented golden pompano (Trachinotus ovatus). In this study， a lipase-producing Bacillus subtilis with salt tolerance was screened from traditionally fermented golden pompano (TF) and used as a starter culture. Whole-genome sequencing analysis revealed it carries four CRISPR structures and two genes encoding triacylglycerol lipase. Untargeted lipidomics identified lipid molecules (833) in six major classes from B. subtilis SCSMX-2 fermented golden pompano (IF). Twenty-eight lipid molecules were upregulated in IF， including phosphatidylcholines (PCs)， triacylglycerols (TAGs)， and lysophosphatidylcholine. B. subtilis supplementation enhanced the production of polyenyl phosphatidylcholines and medium- and long-chain triacylglycerols. The IF rich in linoleic， docosahexaenoic acids， and eicosapentaenoic acid were primarily distributed in the sn-2 position of DHA， PC and PE. This research revealed the lipid profiles of IF， providing theoretical basis for the application of B. subtilis in the fermented fish industry.

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Cookie Baking Process Optimization and Quality Analysis Based on Food 3D Printing

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Journal of Northeast Agricultural University(English Edition) 2024年第1期31卷 61-73页

作者： Liu Chenghai Li Jingyi wu chunsheng Zhao Xinglong Zheng Xianzhe College of Engineering Northeast Agricultural UniversityHarbin 150030China Jiamusi Branch of Heilongjiang Academy of Agricultural Machinery Engineering Jiamusi 154005HeilongjiangChina Innovation and Entrepreneurship Center of Northeast Agricultural University Harbin 150030China

In order to obtain better quality cookies, food 3D printing technology was employed to prepare cookies. The texture, color, deformation, moisture content, and temperature of the cookie as evaluation indicators, the influences of baking process parameters, such as baking time, surface heating temperature and bottom heating temperature, on the quality of the cookie were studied to optimize the baking process parameters. The results showed that the baking process parameters had obvious effects on the texture, color, deformation, moisture content, and temperature of the cookie. All of the roasting surface heating temperature, bottom heating temperature and baking time had positive influences on the hardness, crunchiness, crispiness, and the total color difference(ΔE) of the cookie. When the heating temperatures of the surfac and bottom increased, the diameter and thickness deformation rate of the cookie increased. However,with the extension of baking time, the diameter and thickness deformation rate of the cookie first increased and then decreased. With the surface heating temperature of 180 ℃, the bottom heating temperature of 150 ℃, and baking time of 15 min, the cookie was crisp and moderate with moderate deformation and uniform color. There was no burnt phenomenon with the desired quality. Research results provided a theoretical basis for cookie manufactory based on food 3D printing technology.

关键词： food 3D printing baking process cookie quality analysis optimization of process parameter

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Cobalt doping amount determines dominant reactive species in peroxymonosulfate activation via porous carbon catalysts co-doped by cobalt and nitrogen

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Journal of Environmental Sciences 2024年第4期138卷 212-226页

作者： Xiang Li Limeng wu Aiqin Zhang Shaohua wu Yan Lin Chunping Yang Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China Academy of Environmental and Resource Sciences School of Environmental Science and EngineeringGuangdong University of Petrochemical TechnologyMaoming 525000China College of Environmental Science and Engineering Hunan University and Key Laboratory of Environmental Biology and Pollution Control(Hunan University)Ministry of EducationChangsha 410082China

Switching the reaction routes in peroxymonosulfate(PMS)-based advanced oxidation processes have attracted much attention but remain challenging.Herein,a series of Co-N/C catalysts with different compositions and structures were prepared by using bimetallic zeolitic imidazolate frameworks based on ZIF-8 and ZIF-67(x Zn/Co-ZIFs).Results show that Co doping amount could mediate the transformation of the activation pathway of PMS over CoN/C.When Co doping amount was less than 10%,the constructed x Co-N/C/PMS system(x≤10%)was singlet oxygen-dominated reaction;however further increasing Co doping amount would lead to the generation and coexistence of sulfate radicals and high-valent cobalt,besides singlet oxygen.Furthermore,the nitrogen-coordinated Co(Co-NX)sites could serve as main catalytically active sites to generate singlet oxygen.While excess Co doping amount caused the formation of Co nanoparticles from which leached Co ions were responsible for the generation of sulfate radicals and high-valent cobalt.Compared to undoped N/C,Co doping could significantly enhance the catalytic performance.The 0.5%Co-N/C could achieve the optimum degradation(0.488 min^(-1))and mineralization abilities(78.4%)of sulfamethoxazole among the investigated Co-N/C catalysts,which was superior to most of previously reported catalysts.In addition,the application prospects of the two systems in different environmental scenarios(pH,inorganic anions and natural organic matter)were assessed and showed different degradation behaviors.This study provides a strategy to regulate the reactive species in PMS-based advanced oxidation process.

关键词： Peroxymonosulfate Sulfate radical Singlet oxygen Cobalt Zeolitic imidazolate framework Advanced oxidation process

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The physiological role of the unfolded protein response in the nervous system

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Neural Regeneration Research 2024年第11期19卷 2411-2420页

作者： Shuangchan wu Wensheng Lin Department of Neuroscience University of MinnesotaMinneapolisMNUSA Institute for Translational Neuroscience University of MinnesotaMinneapolisMNUSA

The unfolded protein response(UPR)is a cellular stress response pathway activated when the endoplasmic reticulum,a crucial organelle for protein folding and modification,encounters an accumulation of unfolded or misfolded proteins.The UPR aims to restore endoplasmic reticulum homeostasis by enhancing protein folding capacity,reducing protein biosynthesis,and promoting protein degradation.It also plays a pivotal role in coordinating signaling cascades to determine cell fate and function in response to endoplasmic reticulum stress.Recent research has highlighted the significance of the UPR not only in maintaining endoplasmic reticulum homeostasis but also in influencing various physiological processes in the nervous system.Here,we provide an overview of recent findings that underscore the UPR’s involvement in preserving the function and viability of neuronal and myelinating cells under physiological conditions,and highlight the critical role of the UPR in brain development,memory storage,retinal cone development,myelination,and maintenance of myelin thickness.

关键词： myelin neuron oligodendrocyte Schwann cell unfolded protein response

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Four new species of Limacodidae from China(Lepidoptera: Zygaenoidea)

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Zoological Systematics 2020年第4期45卷 316-320页

作者： chunsheng wu Key Laboratory of Zoological Systematics and Evolution Chinese Academy of SciencesBeijing 100101China

Four new species,Epsteinius luoi sp.nov.,Aphendala notoseusa sp.nov.,Aphendala mina sp.***.and Striogyia acuta sp.nov.,are described and illustrated from China.

关键词： Zygaenoidea Limacodidae slug caterpillar moths new species China

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着眼未来教育家的教育博士培养模式构建

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研究生教育研究 2024年第2期 1-7页

作者：秦春生邬志辉东北师范大学研究生院长春130024 东北师范大学中国农村教育发展研究院长春130024

教育博士专业学位的设立是我国博士学位制度的一项重大创新,是培养造就未来教育家的重要途径,对建设教育强国具有先导性、基础性、战略性作用。构建一个既符合教育博士类别要求又能彰显教育博士规格质量的培养模式,是一个重大的理论与... 详细信息

教育博士专业学位的设立是我国博士学位制度的一项重大创新,是培养造就未来教育家的重要途径,对建设教育强国具有先导性、基础性、战略性作用。构建一个既符合教育博士类别要求又能彰显教育博士规格质量的培养模式,是一个重大的理论与实践课题。本文结合东北师范大学的实践探索,从教育博士培养改革的时代之需、他山之石、理论之基、实践之径四个方面,阐释“目标导向、理实互构、三维协同”教育博士培养模式的理论内涵与实践路径,以期能为建构具有中国特色的教育博士培养模式提供参考和借鉴。

关键词：未来教育家教育博士培养模式理实互构

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