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焦作市颗粒物与臭氧时空特征及其影响因素分析

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绿色科技 2024年第16期26卷 134-141页

作者：何恩明王荣华王鑫李小超岳小龙江苏师范大学地理测绘与城乡规划学院江苏徐州221000 焦作市生态环境局河南焦作454000

我国经济的快速发展带来了严重的环境污染问题,阻碍了我国生态文明建设和可持续发展建设进程。颗粒物(PM_(2.5)和PM_(10))与臭氧分别是我国北方城市秋冬季(1-3月份和10-12月份)与春夏季(4-9月份)的重要污染物。分析了2020-2023年焦作市... 详细信息

我国经济的快速发展带来了严重的环境污染问题,阻碍了我国生态文明建设和可持续发展建设进程。颗粒物(PM_(2.5)和PM_(10))与臭氧分别是我国北方城市秋冬季(1-3月份和10-12月份)与春夏季(4-9月份)的重要污染物。分析了2020-2023年焦作市颗粒物和臭氧的时空变化特征,并研究了焦作市5个国控监测点颗粒物和臭氧浓度与300 m和600 m缓冲区内春夏季植被、建筑等要素的相关性。结果表明:(1)近4年焦作市颗粒物浓度呈小幅度下降趋势,但臭氧浓度有反弹趋势;(2)焦作市颗粒物浓度呈现春夏季低,秋冬季高的变化趋势;臭氧浓度则呈现出春夏季高,秋冬季低的变化趋势;(3)焦作市国控监测点之间的颗粒物或臭氧浓度具有显著差异;(4)环境要素对污染物浓度具有显著影响。在600 m缓冲区内,春夏季节,PM_(10)浓度与植被覆盖面积呈现显著负相关关系;臭氧浓度与不透水地面(包括主要道路、广场、塑胶场地)面积呈显著正相关;在300 m缓冲区内,秋冬季节,PM_(10)、PM_(2.5)浓度与低层建筑、主要道路和广场的面积之和呈现显著正相关关系。最后,本文提出可以通过增加植树造林、减少不透水地面建设等措施降低城市地区的大气污染程度。

关键词：颗粒物与臭氧时空差异性环境要素焦作市

Exploring the Mechanism,Advancements,and Application of Thermogalvanic Effect in Hydrogels

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Chinese Journal of Chemistry 2024年第5期42卷 543-556页

作者： Xiaoyu Yang Peng Wang xiaolong Wu Yongli Liao Senyun Liu Wei Duan Ying yue School of Energy Power and Mechanical EngineeringNorth China Electric Power UniversityBaodingHebei071000 China Hebei Key Laboratory of Electric Machinery Health Maintenance & Failure Prevention North China Electric Power UniversityBaodingHebei071003 China Electric Power Research Institute China South Power GridGuangzhouGuangdong510000 China Key Laboratory of Icing and Anti/De-icing China Aerodynamics Research and Development CenterMianyangSichuan621000 China

The issue of energy consumption has garnered significant interest due to its excessive ***,thermoelectric devices have been getting increased attention,as they can harness waste heat from various sources,such as solar radiation,human body,and industrial ***,the recovery of low-grade heat has been a challenge,resulting in unsustainable energy use and significant *** considerable advances have been made in thermoelectric materials in recent decades,the majority of these devices still primarily employ ***,the emergence of quasi-solid-state thermoelectric materials represents a novel development with profound promise for the environment and *** materials offer several advantages,such as improved energy conversion capacities,cost-effectiveness,versatility,and scalability,to support increased ***,this review explores the application of thermoelectric materials in self-powered sensors,integrated modules,and heat harvesting ***,the potential of high-performance thermocouples based on thermogalvanic effects is assessed,along with the challenges that must be overcome to realize this goal.

关键词： Hydrogel Thermogalvanic effect Thermochemistry Electrolytes Flexible electronics

Controllable self-transport of bouncing droplets on ultraslippery surfaces with wedge-shaped grooves

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Droplet 2024年第2期3卷 138-145页

作者： Chuchen yue Qingwen Dai xiaolong Yang Carsten Gachot Wei Huang Xiaolei Wang College of Mechanical and Electrical Engineering Nanjing University of Aeronautics&AstronauticsNanjingChina Institute of Engineering Design and Product Development Tribology Research GroupTU WienViennaAustria

Preventing the accretion of droplets on surfaces is vital and slippery liquid-infused porous surfaces(SLIPS)have promising application prospects,such as surface self-cleaning and droplet *** this work,controllable self-transport of bouncing droplets on ultraslippery surfaces with wedge-shaped grooves is *** impact behaviors of droplets on SLIPS under various impact velocities and diameters are explored,which can be classified as hover,total bounce,partial bounce,Worthington jet,and *** with wedge-shaped grooves were designed to transport accreted *** energy and transport model is established to explain the impact and self-transport mechanism,where the Laplace pressure and moving resistance between droplets play a key ***,SLIPS with branched wedge-shaped grooves were designed for droplet self-transport and demonstrated *** work provides a general reference for spontaneous motion control of sessile droplets,droplets with initial impacting velocity,or even liquid films.

关键词： wedge shaped droplets

Slippery hydrogel with desiccation-tolerant‘skin’for high-precision additive manufacturing

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International Journal of Extreme Manufacturing 2024年第2期6卷 486-500页

作者： Desheng Liu Pan Jiang yue Hu Yaozhong Lu Yixian Wang Jiayu Wu Danli Hu Tao Wu xiaolong Wang State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000People’s Republic of China CAS Key Laboratory of Chemistry of Northwestern Plant Resources Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000People’s Republic of China Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai Yantai Zhongke Research Institute of Advanced Materials and Green Chemical EngineeringYantai 264006People’s Republic of China Key Laboratory of Materials-Oriented Chemical Engineering of Xinjiang Uygur Autonomous Region School of Chemistry and Chemical EngineeringShihezi UniversityShihezi 832003People’s Republic of China

Hydrogels inevitably undergo dehydration,structural collapse,and shrinkage deformation due to the uninterrupted evaporation in the atmosphere,thereby losing their flexibility,slipperiness,and manufacturing ***,we propose a novel bioinspired strategy to construct a spontaneously formed‘skin’on the slippery hydrogels by incorporating biological stress metabolites trehalose into the hydrogel network,which can generate robust hydrogen bonding interactions to restrain water *** contents of trehalose in hydrogel matrix can also regulate the desiccation-tolerance,mechanical properties,and lubricating performance of slippery hydrogels in a wide *** vat photopolymerization three-dimensional printing and trehalose-modified slippery hydrogels enables to achieve the structural hydrogels with high resolution,shape fidelity,and sophisticated architectures,instead of structural collapse and shrinkage deformation caused by *** thus,this proposed functional hydrogel adapts to manufacture large-scale hydrogels with sophisticated architectures in a long-term *** a proof-of-concept demonstration,a high-precision and sophisticated slippery hydrogel vascular phantom was easily fabricated to imitate guidewire ***,the proposed protocol is universally applicable to diverse types of hydrogel *** strategy opens up a versatile methodology to fabricate dry-resistant slippery hydrogel for functional structures and devices,expanding their high-precision processing and broad applications in the atmosphere.

关键词： slippery hydrogel trehalose desiccation tolerance vat photopolymerization 3D printing hydrogen bonding

Macro electrochemical milling and its hybrid variants

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Chinese Journal of Aeronautics 2024年第8期37卷 1-35页

作者： Ningsong QU xiaolong FANG Junzhong ZHANG Huanghai KONG Yang LIU Minglu WANG Xiaokang yue yuehong MA Zhihao SHEN Jiajie CHEN College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China School of Mechanical Engineering Jiangsu UniversityZhenjiang 212003China School of Mechanical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Mechanical Engineering Hefei University of TechnologyHefei 230009China

Macro electromechanical milling has recently attracted increasing attention because numerous large thin-walled structures composed of difficult-to-cut materials are employed in the aerospace *** paper reviews recent developments in state-of-the-art macro electromechanical *** fundamental aspects of material removal mechanisms,such as the generation and breakdown behaviors of passive oxide films of typical difficult-to-cut materials,were *** methods for breaking down passive films are summarized,and simulation methods for the machining process coupling multiple physical fields are *** electrochemical milling methods,including fly mode electrochemical milling and sink electrochemical milling,are *** made to improve process performance,such as the material removal rate,surface quality,and machining accuracy,are *** addition,the main hybrid electrochemical milling methods,including electrochemical discharge milling,mechano-electrochemical milling,and electrochemical mill grinding,are also presented.

关键词： Electrochemical machining Electrochemical milling Material removal rate Surface quality Electrochemical discharge milling Electrochemical millgrinding

Nuciferine alleviates collagen-induced arthritic in rats by inhibiting the proliferation and invasion of human arthritis-derived fibroblast-like synoviocytes and rectifying Th17/Treg imbalance

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Chinese Journal of Natural Medicines 2024年第4期22卷 341-355页

作者： WANG Hao GENG xiaolong AI Fangbin YU Zhilun ZHANG Yan ZHANG Beibei LV Cheng GAO Ruiyang yue Bei DOU Wei The MOE Key Laboratory of Standardization of Chinese Medicines Shanghai Key Laboratory of Compound Chinese Medicinesand the SATCM Key Laboratory of New Resources and Quality Evaluation of Chinese MedicineInstitute of Chinese Materia MedicaSchool of Traditional Chinese Materia MedicaShanghai University of Traditional Chinese Medicine(SHUTCM)Shanghai 201203China

Rheumatoid arthritis(RA)is a chronic autoimmune disorder marked by persistent synovial inflammation and joint degradation,posing challenges in the development of effective ***,an alkaloid found in lotus leaf,has shown promising anti-inflammatory and anti-tumor effects,yet its efficacy in RA treatment remains *** study investigated the antiproliferative effects of nuciferine on the MH7A cell line,a human RA-derived fibroblast-like synoviocyte,revealing its ability to inhibit cell proliferation,promote apoptosis,induce apoptosis,and cause G1/S phase ***,nuciferine significantly reduced the migration and invasion capabilities of MH7A *** therapeutic potential of nuciferine was further evaluated in a collagen-induced arthritis(CIA)rat model,where it markedly alleviated joint swelling,synovial hyperplasia,cartilage injury,and inflammatory *** also improved collagen-induced bone erosion,decreased pro-inflammatory cytokines and serum immunoglobulins(IgG,IgG1,IgG2a),and restored the balance between T helper(Th)17 and regulatory T cells in the spleen of CIA *** results indicate that nuciferine may offer therapeutic advantages for RA by decreasing the proliferation and invasiveness of FLS cells and correcting the Th17/Treg cell imbalance in CIA rats.

关键词： Rheumatoid arthritis Collagen-induced arthritis Fibroblast-like synoviocyte Immune imbalance Nuciferine

The engineering of circular causality for specialization and design of complex systems:cad2CAS and casCAD2

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Frontiers of Information Technology & Electronic Engineering 2024年第2期25卷 323-332页

作者： xiaolong LIANG Rui QIN Juanjuan LI Fei-yue WANG Faculty of Innovation Engineering Macao University of Science and TechnologyMacao999078China State Key Laboratory of Multimodal Artificial Intelligence Systems Chinese Academy of SciencesBeijing100190China The State Key Laboratory for Management and Control of Complex Systems Chinese Academy of SciencesBeijing100190China

The emergence of decentralized autonomous organizations and operations(DAOs),equipped with innovative mechanisms,enables new possibilities for transforming traditional social collaborative *** are the underlying drive... 详细信息

关键词： complexity. circular equipped

Chemical formation and source apportionment of PM_(2.5) at an urban site at the southern foot of the Taihang mountains

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Journal of Environmental Sciences 2021年第5期33卷 20-32页

作者： Xiaoyong Liu Mingshi Wang Xiaole Pan Xiyue Wang xiaolong yue Donghui Zhang Zhigang Ma Yu Tian Hang Liu Shandong Lei Yuting Zhang Qi Liao Baozhu Ge Dawei Wang Jie Li Yele Sun Pingqing Fu Zifa Wang Hong He Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Henan Polytechnic University Jiaozuo 454003China Jiaozuo Ecological Environment Monitoring Center Jiaozuo 454003China Jiaozuo Environmental Science Research Institute Jiaozuo 454003China Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China Institute of Surface-Earth System Science Tianjin UniversityTianjin 300072China University of Chinese Academy of Sciences Beijing 100049China College of Earth Sciences University of Chinese Academy of SciencesBeijing 100049China

The region along the Taihang Mountains in the North China Plain(NCP) is characterized by serious fine particle pollution. To clarify the formation mechanism and controlling factors, an observational study was conducted to investigate the physical and chemical properties of the fine particulate matter in Jiaozuo city, China. Mass concentrations of the water-soluble ions(WSIs) in PM_(2.5) and gaseous pollutant precursors were measured on an hourly basis from December 1, 2017, to February 27, 2018. The positive matrix factorization(PMF) method and the FLEXible PARTicle(FLEXPART) model were employed to identify the sources of PM_(2.5). The results showed that the average mass concentration of PM_(2.5) was 111 μg/m^(3) during the observation period. Among the major WSIs, sulfate, nitrate, and ammonium(SNA) constituted 62% of the total PM_(2.5) mass, and NO_(3)^(-) ranked the highest with an average contribution of 24.6%. NH_(4)^(+) was abundant in most cases in Jiaozuo. According to chemical balance analysis, SO_(2)-4, NO_(3)^(-), and Cl^(-) might be present in the form of(NH_4)_(2)SO_4, NH_4NO_3, NH_4Cl, and KCl. The liquid-phase oxidation of SO_(2) and NO_(2) was severe during the haze period. The relative humidity and pH were the key factors influencing SO_(4)^(2-) formation. We found that NO_(3)^(-) mainly stemmed from homogeneous gas-phase reactions in the daytime and originated from the hydrolysis of N_(2)O_5 in the nighttime, which was inconsistent with previous studies. The PMF model identified five sources of PM_(2.5) : secondary origin(37.8%), vehicular emissions(34.7%), biomass burning(11.5%), coal combustion(9.4%), and crustal dust(6.6%).

关键词： PM_(2.5) Chemical components Source identification

Adsorption and separation technologies based on supramolecular macrocycles for water treatment

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Eco-Environment & Health 2024年第3期3卷 381-391页

作者： Qian Lin xiaolong Ding Yuansheng Hou Wajahat Ali Zichen Li Xinya Han Zhen Meng yue Sun Yi Liu School of Chemistry and Chemical Engineering Anhui University of TechnologyMaanshan 243002China State Key Laboratory of Separation Membrane and Membrane Process School of ChemistryTiangong UniversityTianjin 300387China QingHai Salt Lake Industry Co.Ltd. Golmud 816099China Department of Chemistry University of BaltistanSkardu 16100Pakistan School of Chemistry and Chemical Engineering Nanjing UniversityNanjing 210023China

The escalating challenges in water treatment,exacerbated by climate change,have catalyzed the emergence of innovative *** adsorption separation and membrane filtration methodologies,achieved through molecular structure manipulation,are gaining traction in the environmental and energy *** technologies,integral to both the chemical industry and everyday life,encompass concentration and purification ***,recognized as porous materials,have been prevalent in water treatment due to their inherent benefits:stability,adaptability,and facile *** structures typically exhibit high selectivity and reversibility for specific ions or molecules,enhancing their efficacy in water purification *** progression of purification methods utilizing macrocyclic frameworks holds promise for improved adsorption separations,membrane filtrations,resource utilization,and broader water treatment *** review encapsulates the latest breakthroughs in macrocyclic host-guest chemistry,with a focus on adsorptive and membrane *** aim is to spotlight strategies for optimizing macrocycle designs and their subsequent implementation in environmental and energy endeavors,including desalination,elemental extraction,seawater energy harnessing,and sustainable ***,this review can guide the design and functionality of macrocycles,offering a significantly promising pathway for pollutant removal and resource utilization.

关键词： Environmental pollution Water treatment Supramolecular macrocycles Membrane separation