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ADVANCES IN ATMOSPHERIC SCIENCES 2025年第4期42卷 641-652页

作者： Yang, Zhaomin li, kun Du, lin Shandong Univ Environm Res Inst Qingdao 266237 Peoples R China

Enhanced mass concentrations of aromatic-derived secondary organic aerosol (SOA) are frequently observed during humid-haze events. However, the influencing mechanism of relative humidity (RH) in aromatic-derived SOA formation remains incompletely understood. Here, the RH dependence of SOA formation in the presence of NOx was explored by a series of chamber experiments for toluene (TOL) and 1,3,5-trimethylbenzene (TMB) photooxidation. The yield of TOL SOA and TMB SOA increased by 221% and 52% with increasing RH from similar to 8% to similar to 70%, respectively. Analytical results from a high-resolution mass spectrometer showed that SOA constituents with high oxygen content (O/C > 0.6) were more abundant in SOA formed in the similar to 70% RH experiment. The elevated yields and O/C of SOA could be attributed to the promoted formation and particle-phase diffusivity of highly oxidized molecules. In addition, in comparison with TMB, TOL could produce more unsaturated aldehydes, which are oxidized into carboxylic acids with high O/C, leading to a more sensitive response of TOL SOA formation to the change in RH. Our work provides mechanistic insights into RH roles in aromatic SOA formation and is helpful for a better understanding of humid-haze events.

关键词： secondary organic aerosol aromatic hydrocarbons highly oxidized molecules relative humidity

Highly Oxidized Molecules Make a Significant Contribution to Enhanced Aromatic-Derived Secondary Organic Aerosol under a Humid Environment

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Advances in Atmospheric Sciences 2025年第04期 641-652页

作者： Zhaomin YANG kun li lin DU Environment Research Institute Shandong University

Enhanced mass concentrations of aromatic-derived secondary organic aerosol(SOA) are frequently observed during humid-haze events. However, the influencing mechanism of relative humidity(RH) in aromatic-derived SOA formation remains incompletely understood. Here, the RH dependence of SOA formation in the presence of NOx was explored by a series of chamber experiments for toluene(TOL) and 1,3,5-trimethylbenzene(TMB) photooxidation. The yield of TOL SOA and TMB SOA increased by 221% and 52% with increasing RH from ～8% to ～70%, respectively. Analytical results from a high-resolution mass spectrometer showed that SOA constituents with high oxygen content(O/C > 0.6) were more abundant in SOA formed in the ～70% RH experiment. The elevated yields and O/C of SOA could be attributed to the promoted formation and particle-phase diffusivity of highly oxidized molecules. In addition, in comparison with TMB,TOL could produce more unsaturated aldehydes, which are oxidized into carboxylic acids with high O/C, leading to a more sensitive response of TOL SOA formation to the change in RH. Our work provides mechanistic insights into RH roles in aromatic SOA formation and is helpful for a better understanding of humid-haze events.

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Effect of acid fracturing fluid modifying coal microstructure stimulated by ultrasonic

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International Journal of Mining Science and Technology 2025年第2期35卷 275-293页

作者： Zuo, Shaojie Gan, Rui Wen, Zhijie Zhang, liang Jiang, Zhizhong Zhao, Fuping liu, Chengwei li, kun Xu, Zhiyuan College of Mining Guizhou University Guiyang550025 China Shandong Key Laboratory of Mining Disaster Prevention and Control Shandong University of Science and Technology Qingdao266590 China School of Emergency Management Xihua University Chengdu610039 China Guizhou Research Institute of Oil & Gas Exploration and Development Engineering Guiyang550022 China liupanshui Normal University Liupanshui553000 China

The combination of ultrasonic and acid fracturing fluid can strengthen the modification effect on the micropore structure of the coal matrix, thereby enhancing the efficiency of the acid fracturing process. In this research, acetic acid was utilized to formulate acid fracturing fluids with varying concentrations, and the evolutionary traits of both the acid fracturing fluids and ultrasonic waves in relation to coal samples were investigated. The functional group structure, mineral composition, micropore structure and surface morphology of coal samples were characterized by FTIR, XRD, N2 adsorption at low temperature and SEM-EDS. The results showed that aromatics (I) and branching parameters (CH2/CH3) were reduced by 81.58% and 88.67%, respectively, after 9% acetic acid treatment. Acetic acid can dissolve carbonates and clay minerals in coal, create new pores, and increase porosity, pore volume and pore fractal dimension. After modification by 7% acetic acid, the pore volume increased by 5.7 times. SEM observation shows that the diameter of coal surface holes increases, EDS scanning shows that the content of mineral elements in coal decreases, the connectivity of coal holes increases, and the holes expand. The findings of this research offer theoretical direction for optimizing ultrasonic-enhanced acid fracturing fluid modification. © 2025

关键词： Micropores

In situ regeneration of catalyst for Fenton-like degradation by photogenerated electron transportation:Characterization,performance and mechanism comparison

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Chinese Chemical Letters 2025年第1期36卷 529-533页

作者： Ming-Zhen li Yang Zhang kun li Ya-Nan Shang Yi-Zhen Zhang Yu-Jiao Kan Zhi-Yang Jiao Yu-Yuan Han Xiao-Qiang Cao College of Safety and Environmental Engineering Shandong University of Science and TechnologyQingdao 266590China Engineering Research Center of Groundwater Pollution Control and Remediation Ministry of Education of ChinaBeijing Normal UniversityBeijing 100875China Environment Research Institute Shandong UniversityQingdao 266237China Institute of Yellow River Delta Earth Surface Processes and Ecological Integrity Shandong University of Science and TechnologyQingdao 266590China

Inactivation of carbon-based transition metal catalysts,which was caused by electron loss,limited their application in advanced oxidation ***,Co and TiO_(2) double-loaded carbon nanofiber material(Co@CNFs-TiO_(2))was synthesized in this *** and chemical catalytic systems were synergized *** was eliminated within 15 *** degradation rate remained above 90%after five cycles,and the 50%promotion proved the high stability of Co@CNFs-TiO_(2).The main reactive oxygen species in this system were sulfate radicals,whereas Co and TiO_(2) represented the active sites of the catalytic *** generated from TiO_(2) during the photocatalytic process were transferred to Co,which promoted the Co(Ⅲ)/Co(Ⅱ)cycle and maintained Co in a low-valence state,thereby stimulating the generation of sulfate *** this study,the effective regulation of reactive oxygen species in the reaction system was *** results provided a guidance for in situ electron replenishment and regeneration of carbon-based transition metal catalysts,which will expand the practical application of advanced oxidation processes.

关键词： Electron transportation Catalyst regeneration Peroxymonosulfate Co Photocatalytic

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The Influence of Heterogeneous Processes on the Physicochemical Properties of Atmospheric Aerosols

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ADVANCES IN ATMOSPHERIC SCIENCES 2025年第4期42卷 623-640页

作者： Ge, Maofa Tong, Shengrui Du, lin Wu, lingyan Lei, Ting li, kun Xu, Minglan Tsona, Narcisse T. Zhang, Wenqian Zhang, Hailiang Chinese Acad Sci Inst Chem Beijing Natl Lab Mol Sci BNLMS State Key Lab Struct Chem Unstable Stable Species Beijing 100190 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China Shandong Univ Environm Res Inst Qingdao 266237 Peoples R China Chinese Acad Meteorol Sci State Key Lab Severe Weather Beijing 100081 Peoples R China Chinese Acad Meteorol Sci Key Lab Atmospher Chem CMA Beijing 100081 Peoples R China

With the rapid development of the world economy, complex air pollution has increasingly become a serious threat;for example, with haze events occurring frequently in various regions of the globe. Recent evidence has indicated that secondary aerosols play an important role in haze formation, and that heterogeneous processes are among the main forces driving their explosive growth. In this regard, this paper reviews recent advances in the understanding of the impact of heterogeneous processes on haze chemistry, including the impact on NO2 chemistry, marine aerosols, and the hygroscopicity and optical properties of atmospheric aerosols. It is distinguished from past reviews on this topic by focusing mainly on new insights from the past five years. We summarize the main findings of the impacts of heterogeneous processes on NO2 chemistry, marine aerosols, and the physicochemical properties of atmospheric aerosols, and propose several future research directions.

关键词： heterogeneous chemistry atmosphere aerosols physicochemical properties

Effect of acid fracturing fluid modifying coal microstructure stimulated by ultrasonic

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International Journal of Mining Science and Technology 2025年第02期 275-293页

作者： Shaojie Zuo Rui Gan Zhijie Wen liang Zhang Zhizhong Jiang Fuping Zhao Chengwei liu kun li Zhiyuan Xu College of Mining Guizhou University Shandong Key Laboratory of Mining Disaster Prevention and Control Shandong University of Science and Technology School of Emergency Management Xihua University Guizhou Research Institute of Oil & Gas Exploration and Development Engineering liupanshui Normal University

The combination of ultrasonic and acid fracturing fluid can strengthen the modification effect on the micropore structure of the coal matrix, thereby enhancing the efficiency of the acid fracturing *** this research, acetic acid was utilized to formulate acid fracturing fluids with varying concentrations,and the evolutionary traits of both the acid fracturing fluids and ultrasonic waves in relation to coal samples were investigated. The functional group structure, mineral composition, micropore structure and surface morphology of coal samples were characterized by FTIR, XRD, N2adsorption at low temperature and SEM-EDS. The results showed that aromatics（I） and branching parameters（CH2/CH3） were reduced by 81.58% and 88.67%, respectively, after 9% acetic acid treatment. Acetic acid can dissolve carbonates and clay minerals in coal, create new pores, and increase porosity, pore volume and pore fractal dimension. After modification by 7% acetic acid, the pore volume increased by 5.7 times. SEM observation shows that the diameter of coal surface holes increases, EDS scanning shows that the content of mineral elements in coal decreases, the connectivity of coal holes increases, and the holes expand. The findings of this research offer theoretical direction for optimizing ultrasonic-enhanced acid fracturing fluid modification.

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我国数字经济融合特征及其变化趋势分析

统计研究 2025年第1期42卷 61-74页

作者：徐映梅李坤中南财经政法大学统计与数学学院中南财经政法大学大数据研究院中南财经政法大学市场调查与数据分析中心

本文从价值链投入产出视角界定了数字经济融合的概念和范围,划分数字经济融合类型,构建了一组数字经济融合测度指标体系。基于RAS的拓展方法(IGRAS)创建了2001—2020年数字经济序列投入产出表新数据集,测度了数字经济核心部门内部以及... 详细信息

本文从价值链投入产出视角界定了数字经济融合的概念和范围,划分数字经济融合类型,构建了一组数字经济融合测度指标体系。基于RAS的拓展方法(IGRAS)创建了2001—2020年数字经济序列投入产出表新数据集,测度了数字经济核心部门内部以及数字经济核心部门与数字化效率提升部门之间来自供给与需求两个方向的融合程度,总结了数字经济融合的主要特征。研究表明,数字经济核心部门与供给侧和需求侧部门的平均融合度均超过国民经济各部门的平均融合程度,呈现出较强的拉动与推动力量;数字经济核心部门与原材料、能源和机械制造部门的供给侧融合度较高,与生产性服务业部门的供给侧融合逐渐加深,反映出数字经济核心部门发展对上游关联部门的依赖性增强;数字经济核心部门与部分制造业部门和研发部门的需求侧融合度较高,表明数字经济核心部门为发展高端制造业和开展研发活动提供了数字化和智能化支持,不同部门的数字化进程存在明显差异;不同类型的数字经济核心部门与国民经济各部门之间的融合方式呈现多样性,体现了基于数字经济产业关联的紧密性与渗透性差异。本研究对于把握现阶段数字经济融合发展特征和趋势,深刻认识数字经济融合的多样化模式,对激励产业数字化和数字产业化具有重要意义。

关键词：数字经济产业融合数字经济融合投入产出表

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The Influence of Heterogeneous Processes on the Physicochemical Properties of Atmospheric Aerosols

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Advances in Atmospheric Sciences 2025年第04期 623-640页

作者： Maofa GE Shengrui TONG lin DU lingyan WU Ting LEI kun li Minglan XU Narcisse T.TSONA Wenqian ZHANG Hailiang ZHANG State Key Laboratory for Structural Chemistry of Unstable and Stable Species Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry Chinese Academy of Sciences University of Chinese Academy of Sciences Environment Research Institute Shandong University State Key Laboratory of Severe Weather & Key Laboratory of Atmospheric Chemistry of CMA Chinese Academy of Meteorological Sciences

With the rapid development of the world economy, complex air pollution has increasingly become a serious threat; for example, with haze events occurring frequently in various regions of the globe. Recent evidence has indicated that secondary aerosols play an important role in haze formation, and that heterogeneous processes are among the main forces driving their explosive growth. In this regard, this paper reviews recent advances in the understanding of the impact of heterogeneous processes on haze chemistry, including the impact on NO2chemistry, marine aerosols, and the hygroscopicity and optical properties of atmospheric aerosols. It is distinguished from past reviews on this topic by focusing mainly on new insights from the past five years. We summarize the main findings of the impacts of heterogeneous processes on NO2chemistry, marine aerosols, and the physicochemical properties of atmospheric aerosols, and propose several future research directions.

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Effect of hospital-community-home collaborative health management on symptoms,cognition,anxiety,and depression in high-risk individuals for stroke

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World Journal of Psychiatry 2025年第3期15卷 78-87页

作者： Jing Wang Chen-Xi Zhao Jin Tian Yan-Ru li Kai-Fang Ma Rui Du Meng-kun li Rui Hu Department of Public Health The First Hospital of Hebei Medical UniversityShijiazhuang 050000Hebei ProvinceChina Department of Mental Health The First Hospital of Hebei Medical UniversityShijiazhuang 050000Hebei ProvinceChina

BACKGROUND Effective health management for high-risk stroke populations is *** hospital-community-home(HCH)collaborative health management(CHM)model leverages resources from hospitals,communities,and *** integrating patient information across these three domains,it facilitates the delivery of tailored guidance,health risk assessments,and three-in-one health *** To explore the effects of the HCH-CHM model on stroke risk reduction in highrisk *** In total,110 high-risk stroke patients screened in the community from January 2019 to January 2023 were enrolled,with 52 patients in the control group receiving routine health education and 58 in the observation group receiving HCH-CHM model interventions based on routine health *** awareness scores,health behavior levels,medication adherence,blood pressure,serum biochemical markers(systolic/diastolic blood pressure,total cholesterol,and triglyceride),and psychological measures(self-rating anxiety/depression scale)were evaluated and compared between *** The observation group showed statistically significant improvements in stroke awareness scores and health behavior levels compared to the control group(Plifestyle and dietary habits(Plic blood pressure,diastolic blood pressure,total cholesterol,triglyceride,self-rating anxiety scale,and self-rating depression scale scores(Pliorating blood pressure,serum biochemical marker levels,and negative psychological symptoms.

关键词： Hospital-community-home-collaborative health management model High-risk populations for stroke Stroke awareness score Health behavior level Hospital-community-home

主压载水舱吹除速率和顺序对潜艇应急上浮特性的影响研究

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船舶力学 2025年第1期29卷 41-52页

作者：陈佳宝吕帮俊彭利坤黄斌海军工程大学动力工程学院武汉430033

为了探究主压载水舱吹除速率及吹除顺序对潜艇应急上浮特性的影响,以Suboff为研究对象,基于RANS方程和整体动网格技术,联合简化的高压气吹除主压载水舱模型,构建潜艇应急上浮运动仿真计算模型。通过线性施加上浮力,得到初始航速为1 m/s... 详细信息

为了探究主压载水舱吹除速率及吹除顺序对潜艇应急上浮特性的影响,以Suboff为研究对象,基于RANS方程和整体动网格技术,联合简化的高压气吹除主压载水舱模型,构建潜艇应急上浮运动仿真计算模型。通过线性施加上浮力,得到初始航速为1 m/s时不同吹除速率以及不同吹除顺序和时间间隔下,潜艇应急上浮运动参数随时间的变化情况。结果表明:主压载水舱吹除速率越快,艇体出水越快,纵摇角的幅值越小,横摇角的幅值越大;按照首、中、尾组和中、首、尾组顺序吹除水舱相较于同时吹除,纵倾角幅值更大,上浮更快;按照首、中、尾组相较于中、首、尾组顺序吹除水舱,出水更快;在同一吹除顺序下,时间间隔越长,纵摇角幅值越大,而间隔时间为1.0 s的出水时间早于另外两种工况;在所有工况中,按照首、中、尾组顺序吹除水舱时间间隔为1.0 s的工况出现出水最高点最早为7.08 s,相较于同时吹除提前了1.21 s。研究结果对于潜艇高压气的压力设计及实艇应急上浮的吹除策略具有一定的指导意义。

关键词：主压载水舱应急上浮吹除速率吹除顺序上浮力

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