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Modelling method of inter-building movement for campus-scale occupancy simulation:A case study

Building Simulation 2023年第3期16卷 461-481页

作者： Mingya Zhu Yiqun Pan zejun wu Zhizhong Huang Risto Kosonen School of Mechanical Engineering Tongji UniversityShanghaiChina Sino-German College of Applied Sciences Tongji UniversityShanghaiChina Department of Mechanical Engineering Aalto UniversityEspooFinland College of Urban Construction Nanjing Tech UniversityNanjingChina

As an important factor in the investigation of building energy consumption,occupant behavior(OB)has been widely studied on the building level.However so far,studies of OB modelling on the district scale remain limited.Indeed,district-scale OB modelling has been facing the challenges from the scarcity of district-scale data,modelling methods,as well as simulation application.This study initiates the extrapolation of occupancy modelling methodology from building level to district scale through proposing modelling methods of inter-building movements.The proposed modelling methods utilize multiple distribution fittings and Bayesian network to upscale the event description methods from inter-zone movement events at the building level to inter-building movement events at the district level.This study provides a framework on the application of the proposed modelling methods for a university campus in the suburbs of Shanghai,taking advantages of data sensing,monitoring and survey techniques.With the collected campus-scale occupancy data,this paper defines five patterns of inter-building movement.One pattern represents the dominated inter-building movement events for one kind of students in their daily campus life.Based on the quantitative descriptions for various inter-building movement events,this study performs the stochastic simulation for the campus district,using Markov chain models.The simulation results are then validated with the campus-scale occupancy measurement data.Furthermore,the impact of inter-building movement modelling methods on building energy demand is evaluated for the library building,taking the deterministic occupancy schedules suggested by current building design standard as a baseline.

关键词： occupancy modelling event description inter-building movement stochastic process transition probability campus buildings data acquisition

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Spherical cationic polymer networks with porphyrin photosensitizer for sustainable and efficient photocatalysis

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Nano Research 2024年第5期17卷 3934-3941页

作者： Lingling Zhang Liwei wu Junhui Bao Longhui Li zejun Liu Feng Bai Jie Ju Xi Yao Key Laboratory for Special Functional Materials of Ministry of Education School of Materials Science and EngineeringHenan UniversityKaifeng 475004China Department of Chemistry City University of Hong KongKowloonHong Kong 999077China

The continuous and sustainable photo-activity on micro-or nano-carriers has always been a key stepping stone in the industrialization of photo-catalysis,photo-synthesis,and photo-degradation.Herein,we report a new series of positively charged hollow microspheres carrying porphyrin moieties.Such hollow spheres are formed through crosslinking of well-ordered porous thin laminates,initiated by co-assembly of regular monomers and those decorated with porphyrin moieties.On the surface of an individual sphere,densely distributed positive sites attract anionic reactants.The superficial porphyrin decomposes the accumulated reactants under 1 Sun.After degradation and release of products,the photoactive sites are thereby renewed.We demonstrate that polymer network(1:10)exhibited superior sustainable photocatalytic performance with complete degradation of methyl orange(MO)in 40 min with no observable performance deterioration after six cycles.The established close loop of adsorption-reaction-release cycle makes possible many efficient and continuous photo-catalytic processes.

关键词： hydrogen bonding assembly porphyrin sustainable photo-activity anionic pollutant

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Enabling an Inorganic-Rich Interface via Cationic Surfactant for High-Performance Lithium Metal Batteries

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Nano-Micro Letters 2024年第8期16卷 1-17页

作者： zejun Sun Jinlin Yang Hongfei Xu Chonglai Jiang Yuxiang Niu Xu Lian Yuan Liu Ruiqi Su Dayu Liu Yu Long Meng Wang Jingyu Mao Haotian Yang Baihua Cui Yukun Xiao Ganwen Chen Qi Zhang Zhenxiang Xing Jisheng Pan Gang wu Wei Chen Department of Chemistry National University of Singapore3 Science Drive 3Singapore 117543Singapore Agency for Science Technology and Research(A*STAR)Institute of High-Performance Computing1 Fusionopolis Way#16‑16 ConnexisSingapore 138632Singapore Department of Physics National University of Singapore2 Science Drive 3Singapore 117542Singapore Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207People’s Republic of China Agency for Science Technologyand Research(A*STAR)Institute of Materials Research and EngineeringInnovis2 Fusionopolis Way#08‑03Singapore 138634Singapore

An anion-rich electric double layer(EDL)region is favorable for fabricating an inorganic-rich solid-electrolyte interphase(SEI)towards stable lithium metal anode in ester electrolyte.Herein,cetyltrimethylammonium bromide(CTAB),a cationic surfactant,is adopted to draw more anions into EDL by ionic interactions that shield the repelling force on anions during lithium plating.In situ electrochemical surface-enhanced Raman spectroscopy results combined with molecular dynamics simulations validate the enrichment of NO_(3)^(−)/FSI−anions in the EDL region due to the positively charged CTA^(+).In-depth analysis of SEI structure by X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectrometry results confirmed the formation of the inorganic-rich SEI,which helps improve the kinetics of Li^(+)transfer,lower the charge transfer activation energy,and homogenize Li deposition.As a result,the Li||Li symmetric cell in the designed electrolyte displays a prolongated cycling time from 500 to 1300 h compared to that in the blank electrolyte at 0.5 mA cm^(-2) with a capacity of 1 mAh cm^(-2).Moreover,Li||LiFePO_(4) and Li||LiCoO_(2) with a high cathode mass loading of>10 mg cm^(-2) can be stably cycled over 180 cycles.

关键词： Cationic surfactant Lithium nitrate additive Solid-electrolyte interphase Electric double layer Lithium metal batteries

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智慧餐饮4.0:融合人工智能的未来餐饮发展新方向

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食品科学技术学报 2024年第1期42卷 10-19页

作者：吴晓蒙李想刘楠褚泽军沈群胡小松中国农业大学食品科学与营养工程学院北京100083 四川旅游学院烹饪学院四川成都610100 中国人民解放军陆军勤务学院军需采购系重庆401331 四川成都中农大现代农业产业研究院四川成都611430

餐饮业在我国经济社会具有重要地位,随着社会的发展及人工智能的应用,餐饮业正向着多元化、专业化、智能化的方向发展。梳理了我国餐饮行业的发展历程,分析了智慧餐饮4.0的内涵和外延,并系统阐述了相关新型食品科学技术与人工智能技术... 详细信息

餐饮业在我国经济社会具有重要地位,随着社会的发展及人工智能的应用,餐饮业正向着多元化、专业化、智能化的方向发展。梳理了我国餐饮行业的发展历程,分析了智慧餐饮4.0的内涵和外延,并系统阐述了相关新型食品科学技术与人工智能技术在该领域的应用趋势。计算机视觉等技术结合深度学习算法等手段实现了原料的品质分级;数字孪生技术不仅可以将上千种电子菜谱转化为工艺参数,而且可模拟烹饪大师烹饪技艺,将中国特色烹饪技法用于机器人烹饪;协同过滤推荐算法、自然语言处理、人脸识别等技术的应用,可对顾客身份信息快速识别,实现个性化膳食推荐。总结了智慧餐饮的现状和主要技术手段,并展望了未来发展方向,即以健康为导向、以美味为基础、以文化为内核,以期为餐饮行业的进一步发展提供参考。

关键词：人工智能智慧餐饮食品安全个性化营养智能烹饪

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血栓调节素-凝血酶-高迁移率族蛋白1通路在慢性硬膜下血肿发生发展中的作用研究进展

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中华神经医学杂志 2024年第2期23卷 181-185页

作者：武泽军赵君爽胡钧涛锦州医科大学研究生院锦州121000 湖北医药学院附属太和医院神经外科十堰442000

慢性硬膜下血肿(CSDH)是一种位于硬脑膜边界细胞层内,由包膜包被的血液、血凝块及其降解产物的集合体。血肿腔内的炎症反应、凝血功能障碍、新生毛细血管生成异常等病理生理过程在CSDH的发生发展中起重要作用。高迁移率族蛋白1(HMGB1)... 详细信息

慢性硬膜下血肿(CSDH)是一种位于硬脑膜边界细胞层内,由包膜包被的血液、血凝块及其降解产物的集合体。血肿腔内的炎症反应、凝血功能障碍、新生毛细血管生成异常等病理生理过程在CSDH的发生发展中起重要作用。高迁移率族蛋白1(HMGB1)可介导炎症反应、血管生成及止血等过程,血栓调节素(TM)则可通过与HMGB1结合,以依赖凝血酶的方式降解HMGB1。目前研究已证实CSDH的血肿液中TM、HMGB1及其下游相关因子的表达异常增高,但TM-凝血酶-HMGB1通路在CSDH发生发展中的作用尚不完全明确。本文围绕TM-凝血酶-HMGB1通路在CSDH发生发展中的作用研究进展进行综述,旨在为CSDH的发病机制及治疗新靶点研究提供一些参考。

关键词：慢性硬膜下血肿血栓调节素凝血酶高迁移率族蛋白1

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习近平金融法治论述指导下的新金融法学教材建设

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法学教育研究 2024年第1期44卷 268-284页

作者：巫文勇李泽军江西财经大学法学院

金融法学教材建设是金融法治人才培养的前提和基础,也是我国金融法治建设的重要组成部分。我们应该以习近平金融法治相关论述为指导,以其“金融核心论”“金融本源论”“金融安全论”“金融改革论”“全球金融治理论”“党对金融工作集... 详细信息

金融法学教材建设是金融法治人才培养的前提和基础,也是我国金融法治建设的重要组成部分。我们应该以习近平金融法治相关论述为指导,以其“金融核心论”“金融本源论”“金融安全论”“金融改革论”“全球金融治理论”“党对金融工作集中统一领导论”作为教材编撰逻辑和理论基础,结合新时期我国金融发展和金融法治建设需要,对我国金融法学教材进行适应性改革和创新。新时期我国金融法学教材建设的价值导向与基本原则,应该围绕着金融服务实体经济、国家金融安全、新金融法治人才培养目标,以“组织、行为、监管、退出和国家安全”作为逻辑基础和体系结构,采取金融法学和金融学知识交叉融合的教材内容,秉持传统金融法和新科技金融法学理论、规则相结合的功能型教材编撰范式,实现金融法学教材结构体系和内容建设的双重创新。

关键词：金融法治教材建设金融安全内容创新

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A polyphenol-modified chitosan hybrid hydrogel with enhanced antimicrobial and antioxidant activities for rapid healing of diabetic wounds

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Nano Research 2023年第1期16卷 905-916页

作者： zejun Xu Guiting Liu Li Zheng Jun wu The State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan UniversityChengdu 610065China Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation Sun Yat-Sen Memorial HospitalSun Yat-sen UniversityGuangzhou 510120China Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration Life Science InstitutesGuangxi Medical UniversityNanning 530021China Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co-constructed by the Province and Ministry Guangxi Medical UniversityNanning 530021China Bioscience and Biomedical Engineering Thrust The Hong Kong University of Science and Technology(Guangzhou)Guangzhou 511400China Division of Life Science The Hong Kong University of Science and TechnologyHong Kong 999077China

High oxidative stress injury and bacterial infection are the main challenges that impair wound healing in diabetic patients.Therefore,a hydrogel with enhanced antimicrobial and antioxidant properties was developed for rapid healing of diabetic wounds.In this study,chitosan methacrylate-gallic acid(CSMA-GA)polymer with antioxidant activity,antimicrobial activity,and ultraviolet(UV)-triggered gelling properties was developed as a hydrogel precursor.Meanwhile,amphiphilic Pluronic F127 molecules were used to load hydrophobic chlorhexidine drug molecules to obtain F127/chlorhexidine nanoparticle(NP)with strong antibacterial activity.Subsequently,F127/chlorhexidine NPs were encapsulated in CSMA-GA hydrogel to further enhance its antibacterial activity.The hybrid hydrogel platform(CSMA-GA/F127/chlorhexidine(CMGFC))exhibited high antibacterial efficiency(>99.9%)and strong reactive oxygen species(ROS)scavenging ability(>80.0%),which effectively protected cells from external oxidative stress(upregulated superoxide dismutase(SOD)and glutathione/oxidized glutathione disulfide(GSH/GSSG)levels and downregulated malondialdehyde(MDA)levels).Moreover,in vivo results proved that the CMGFC hydrogel significantly reduced inflammatory responses(downregulated interleukin-6(IL-6)and upregulated interleukin-10(IL-10)levels),promoted angiogenesis(upregulated vascular endothelial growth factor(VEGF)and platelet endothelial cell adhesion molecule-1(CD 31)levels),and wound healing(enhanced collagen deposition and tissue remodelling).Overall,the CMGFC hydrogel with enhanced antimicrobial and antioxidant properties demonstrated significant potential to enhance diabetic wound healing.

关键词： antimicrobial antioxidant diabetic wound hydrogel

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A novel hydrogel with glucose-responsive hyperglycemia regulation and antioxidant activity for enhanced diabetic wound repair

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Nano Research 2022年第6期15卷 5305-5315页

作者： zejun Xu Guiting Liu Qing Li Jun wu School of Biomedical Engineering Sun Yat-sen UniversityShenzhen 518107China Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation Sun Yat-sen Memorial Hospital Sun Yat-sen UniversityGuangzhou 510120China The State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan UniversityChengdu 610065China School and Hospital of Stomatology Cheeloo College of MedicineShandong UniversityJinan 250012China

Enhanced diabetic wound repair remained a global challenge.Herein,we reported a novel hydrogel with glucose-responsive hyperglycemia regulation and antioxidant activity for enhanced diabetic wound repair.In this study,gallic acid(GA)with strong antioxidant activity was grafted onto chitosan(CS)chains by one-step synthesis,and then incorporated into poly(ethylene glycol)diacrylate(PEG-DA)hydrogel matrix to obtain a novel antioxidant hybrid hydrogel(PEG-DA/CS-GA).Meanwhile,polyethyleneimine(PEI)was modified with a unique glucose-sensitive phenylboronic acid(PBA)molecule to load insulin(PEIPBA/insulin nano-particles,PEI-PBA/insulin NPs),which could be immobilized in the PEG-DA/CS-GA hybrid hydrogel by the formation of dynamic borate bond between the phenylboronic acid groups on the PEI-PBA and the polyphenol groups on the CSGA.The results indicated that the PEG-DA/PEI-PBA/insulin/CS-GA(PPIC)hydrogel platform not only had remarkable biocompatibility,but also displayed extraordinary antioxidant properties(DPPH scavenging rate>95.0%),and effectively protected cells from oxidative damage(decreased MDA levels,increased Superoxide dismutase(SOD)levels and stable GSH/GSSG levels).Meanwhile,the PPIC hydrogel also exhibited unique glucose-responsive insulin release characteristics,and effectively regulated the blood glucose level.The in vitro and in vivo results demonstrated that our PPIC hydrogel could promoted angiogenesis(increased VEGF and CD 31 expression),reshaped the inflammatory microenvironment(decreased IL-6 and increased IL-10 level),and achieved wound closure within 20 days.All these results strongly indicated that the PPIC hydrogel represented a tough and efficient platform for diabetic wound treatment.

关键词： diabetic wound glucose responsive antioxidation hyperglycemia regulation insulin

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Janus hydrogel with dual antibacterial and angiogenesis functions for enhanced diabetic wound healing

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Chinese Chemical Letters 2023年第4期34卷 122-126页

作者： Guiting Liu Yuan Zhou zejun Xu Ziting Bao Li Zheng Jun wu The State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan UniversityChengdu 610065China Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation Sun Yat-sen Memorial Hospital Sun Yat-sen UniversityGuangzhou 510120China School of Biomedical Engineering Sun Yat-sen UniversityGuangzhou 510006China Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration Life Science InstitutesGuangxi Medical UniversityNanning 530021China Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co-constructed by the Province and Ministry Guangxi Medical UniversityNanning 530021China

Anti-infection and neovascularization at the wound site are two vital factors that accelerate diabetic wound healing. However, for a wound healing dressing, the two functions need to work at different sites(inner and outer), giving big challenges for dressing design. In this study, we fabricated a novel sodium alginate/chitosan(SA/CS) Janus hydrogel dressing by the assembly of SA hydrogel loaded with silver nanoparticles(Ag NPs) and CS hydrogel impregnated with L-arginine loaded sodium alginate microspheres(Arg MSs) based on electrostatic interactions to combine the two functions. The outer SA-Ag NP hydrogel could prevent infection while avoiding the deposition of Ag NPs in the wound site, and the inner CS-Arg MS hydrogel on the wound surface could realize the sustained release of L-arginine and promote vascular regeneration. The composition, morphology and swelling/degradation of the SA-Ag NP/CS-Arg MS hydrogel were characterized systematically. L-Arginine release behavior has been tested and SA-Ag NP/CSArg MS hydrogel has been confirmed for excellent biocompatibility. Antibacterial and angiogenesis assays demonstrated the antibacterial and angiogenesis characteristics of the SA-Ag NP/CS-Arg MS hydrogel. Finally, in vivo diabetic wound healing assay demonstrated that the SA-Ag NP/CS-Arg MS hydrogel could significantly accelerate re-epithelialization, granulation tissue formation, collagen deposition and angiogenesis, thereby resulting in enhanced diabetic wound healing。

关键词： Janus hydrogel Antibacterial Angiogenesis Diabetic wound Wound healing

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Investigations on Emission Characteristics of a Liquid-Fueled Trapped Vortex Combustor

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Journal of Thermal Science 2020年第1期29卷 69-80页

作者： wu zejun HE Xiaomin College of Aerospace Engineering Chongqing UniversityChongqing 400044China Chongqing Key Laboratory of Heterogeneous Material Mechanics Chongqing 400044China College of Energy and Power Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Jiangsu Province Key Laboratory of Aerospace Power System Nanjing 210016China

The combustion and emission formation process of liquid fuel in the trapped vortex combustor(TVC)are very complicated.A trapped vortex combustor with replaceable bluff-bodies was designed to investigate these processes.The bluff-body widths varied from 0.021 m to 0.036 m.Experimental tests were carried out.Liquid RP-3 aviation kerosene was used in the tests.Emissions were measured under atmospheric pressure.The combustion process was analyzed theoretically in the viewpoints of relative evaporation time,mixing time and reaction time.Numerical simulations were also conducted to help analyze the formation and depletion processes of pollutants in TVC.The results reveal that atomization was a critical factor for formation and depletion processes of pollutants.By controlling mixing speed of burned and unburned gases and thus fuel-air uniformity,turbulence intensity could also affect emission levels.In addition,residence time also affected the emissions by affecting combustion completeness and the time for NOx formation.All these factors were combined in a complicated way to affect combustion process and pollutant emissions.

关键词： trapped vortex combustor gas pollutant emissions atomization,turbulence intensity residence time

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