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Atmospheric oxidation capacity and O_(3) formation in a coastal city of southeast China:Results from simulation based on four-season observation

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Journal of Environmental Sciences 2024年第2期136卷 68-80页

作者： Gaojie chen Taotao Liu Jinsheng chen Lingling Xu Baoye Hu chen Yang Xiaolong Fan Mengren Li Youwei Hong Xiaoting Ji jinfang chen Fuwang Zhang Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Key Lab of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China Minnan Normal University Zhangzhou 363000China College of Harbour and Coastal Engineering Jimei UniversityXiamen 361021China Environmental Monitoring Center of Fujian Fuzhou 350013China

The pollution of atmospheric ozone in China shows an obvious upward trend in the past ***,the studies on the atmospheric oxidation capacity and O_(3)formation in four seasons in the southeastern coastal region of China with the rapid urbanization remain ***,a four-season field observation was carried out in a coastal city of southeast China,using an observation-based model combining with the Master Chemical Mechanism,to explore the atmospheric oxidation capacity(AOC),radical chemistry,O_(3)formation pathways and *** results showed that the average net O_(3)production rate(14.55 ppbv/hr)in summer was the strongest,but the average O_(3)concentrations in autumn was *** AOC and ROx levels presented an obvious seasonal pattern with the maximum value in summer,while the OH reactivity in winter was the highest with an average value of 22.75 sec^(-1).The OH reactivity was dominated by oxygenated VOCs(OVOCs)(30.6%-42.8%),CO(23.2%-26.8%),NO_(2)(13.6%-22.0%),and alkenes(8.4%-12.5%)in different *** photolysis dominated OH primary source on daytime in winter,while in other seasons,HONO photolysis in the morning and ozone photolysis in the afternoon contributed *** analysis indicated that O_(3)production was controlled by VOCs in spring,autumn and winter,but a VOC-limited and NOx-limited regime in summer,and alkene and aromatic species were the major controlling factors to O_(3)***,the study characterized the atmospheric oxidation capacity and elucidated the controlling factors for O_(3)production in the coastal area with the rapid urbanization in China.

关键词： Atmospheric oxidation capacity Radical chemistry Ozone production Sensitivity analysis

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槲皮素联合木犀草素对大肠癌细胞凋亡和β-catenin及其靶基因的作用

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中医药学报 2025年第1期53卷 14-19页

作者：邬世威陈锦芳师子曼胡兵上海中医药大学附属龙华医院中医肿瘤研究所肿瘤科上海200032

目的:研究槲皮素和木犀草素及其联合使用对CT26大肠癌细胞增殖和细胞凋亡的作用及机制。方法:实验分为对照组、槲皮素组(QCT)、木犀草素组(LTL)和联合组(QCT+LTL),分别给予等体积DMSO、槲皮素、木犀草素及槲皮素联合木犀草素处理CT26细... 详细信息

目的:研究槲皮素和木犀草素及其联合使用对CT26大肠癌细胞增殖和细胞凋亡的作用及机制。方法:实验分为对照组、槲皮素组(QCT)、木犀草素组(LTL)和联合组(QCT+LTL),分别给予等体积DMSO、槲皮素、木犀草素及槲皮素联合木犀草素处理CT26细胞。CCK-8(Cell Counting Kit-8)法检测细胞增殖;Annexin-FITC/PI双染,流式细胞仪检测细胞凋亡;酶底物试剂盒检测Caspases活性;Western blot法检测β-catenin及其下游c-Myc、Cyclin D1和Survivin的蛋白表达水平。结果:与对照组比较,槲皮素和木犀草素治疗可抑制CT26细胞增殖,诱导细胞凋亡,伴随Caspase-3、Caspase-8和Caspase-9活性增强,同时还可抑制β-catenin、c-Myc、Cyclin D1及Survivin蛋白表达(P<0.05,P<0.01)。槲皮素和木犀草素联合可增强对CT26细胞的作用。结论:槲皮素和木犀草素可抑制CT26大肠癌生长,诱导细胞凋亡,两药联合作用显著优于单药,其机制与下调β-catenin、c-Myc、Cyclin D1及Survivin表达,活化Caspase-3、Caspase-8和Caspase-9相关。

关键词：槲皮素木犀草素大肠癌细胞增殖细胞凋亡 β-catenin

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Tenglong Buzhong granules(藤龙补中颗粒) inhibits the growth of SW620 human colon cancer in vivo

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Journal of Traditional Chinese Medicine 2022年第5期42卷 701-706页

作者： LI Miao ZHENG Jialu WANG Shuangshuang chen Lei PENG Xiao chen jinfang AN Hongmei HU Bing Institute of Traditional Chinese Medicine in Oncology Longhua HospitalShanghai University of Traditional Chinese MedicineShanghai 200032China Department of Oncology Longhua HospitalShanghai University of Traditional Chinese MedicineShanghai 200032China Shanghai University of Traditional Chinese Medicine Shanghai 201203China Department of Science and Technology Longhua HospitalShanghai University of Traditional Chinese MedicineShanghai 200032China

OBJECTIVE: To observe the anticancer effects of the granular preparation of Tenglong Buzhong decoction(藤龙补中汤,TBD), i.e Tenglong Buzhong granules(藤龙补中颗粒, TBG), in human SW620 colon cancer. METHODS: BALB/c nude mice were subcutaneously transplanted with SW620 cells, and treated with TBG(2.56 g/kg, once per day) and/or 5-Fu(104 mg/kg, once per week) for 21 d. Apoptosis, Caspase activities and cellular senescence were measured by commercial kits. The protein expression and phosphorylation were detected by Western blot or immunohistochemistry. RESULTS: TBG and 5-Fu inhibited tumor growth. The tumor inhibition rate of the TBG, 5-Fu, and TBG+5-Fu groups was 42.25%, 51.58%, and 76.08%, respectively. Combination of TBG and 5-Fu showed synergetic anticancer effects. TBG and 5-Fu induced apoptosis, activated caspase-3,-8, and-9, increased SMAC expression, inhibited XIAP expression. TBG induced cellular senescence, upregulated cyclin-dependent kinase inhibitor 1a(CDKN1a) and cyclin-dependent kinase inhibitor 2a(CDKN2a) expression, and inhibited phosphorylation of retinoblastoma-associated protein(RB) and expression of cyclin E1(CCNE1) and cyclindependent kinases(CDK) 2. TBG also inhibited angiogenesis accompanied by downregulation of vascular endothelial growth factor(VEGF) and hypoxiainducible factor-1α(HIF-1α). CONCLUSIONS: TBG inhibits SW620 colon cancer growth, induces apoptosis via SMAC-XIAP-Caspases signaling, induces cellular senescence through CDKN1a/CDKN2a-RB-E2F signaling, inhibits angiogenesis by down-regulation of HIF-1α and VEGF, and enhances the effects of 5-Fu.

关键词： colonic neoplasms apoptosis cellular senescence signal transduction angiogenesis Tenglong Buzhong granules

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Research on the protection and Inheritance of the intangible cultural heritage -Taking Hebei Province as an example

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International Journal of Technology Management 2014年第3期 37-39页

作者： Zhiyong Chi jinfang Shang Peishan chen Hebei Academy of Governance ShijiazhuangHebei050031 China

Hebei, a traditional culturally grand province, enjoys a profound and varied intangible cultural heritage. However, as the process of social urbanization accelerating, ethnic and cultural intangible cultural heritage of the original ecology has changed dramatically, thus many non-material cultural heritages are losing conditions for survival and development, facing extinction or endangered. In this context, the fate of the traditional culture of ethnic minorities in Hebei Province and the issues of ethnic heritage intangible cultural heritage are attracting more and more attention by people. Therefore, we shall get to know and understand the protection of ethnic minorities＇ Intangible Cultural Heritage in Hebei in urbanization vision. Traditional culture is the sum of the creation of a cultural history of the nation, while the traditional culture heritage handed down is the most essential part, which is the legacy of the history of each nation worth protecting material and spiritual wealth. Traditional culture can be variate, innovate, reconstmcte, but cultural heritage can only be reserved its original form instead of re- *** succession on the basis of traditional culture, new culture can be reconstructed ; But after cultural heritage disappear, it is unsustainable. Tangible cultural heritage is in that way, let alone intangible cultural heritage.

关键词： Intangible cultural heritage Protection Development

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在油-水界面上聚乙烯吡咯烷酮传质动力学的微可视化

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化工学报 2007年第5期58卷 1145-1149页

作者：徐俊辉陈金芳陈中武汉工程大学化工与制药学院

A visualization system based on microscopy,photoelectric imaging analysis and digital processing was developed to investigate the micrometer-level mass transfer process of polyvinylpyrrolidone(PVP)across the interface of *** concentration-gray scale standard curves were obtained by measuring the gray scales of the images of 10 PVP dichloromethane solutions with different *** concentrations of PVP corresponding to different times were determined by measuring the gray scales of the images of PVP dichloromethane solutions at the corresponding *** mass transfer kinetics curve of PVP across the interface of dichloromethane-water was then *** addition,the evolution of flow field in the dichloromethane phase near the interface was observed and analyzed via the visualization system.

关键词：微可视化聚乙烯吡咯烷酮油-水界面传质动力学

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共轭烯酸与聚乙二醇缩合反应研究进展

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有机化学 2015年第1期35卷 39-54页

作者：陈锦芳许孝良李小年浙江工业大学化学工程学院工业催化研究所杭州310014

聚乙二醇不饱和酸酯是一类重要的高聚物单体,其与其他单体接枝共聚也可合成多功能化的高分子聚合物.主要综述了聚乙二醇与丙烯酸、甲基丙烯酸、马来酸等共轭烯酸缩合反应的研究进展,并对其发展进行了展望.

关键词：共轭烯酸聚乙二醇缩合反应

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可视化方法研究合成硫醚反应动力学

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化工学报 2007年第9期58卷 2249-2254页

作者：胡方锋陈金芳徐俊辉陈中武汉工程大学化工与制药学院湖北省新型反应器与绿色化学工艺重点实验室湖北武汉430073

A novel technique combining photoelectronic microscopy and computer imaging tracing was used to investigate the synthesis of thioether(2-[3-methyl-4-(2,2,2-trifluoro-ethoxy)-pyridine-2-(methylsulfanyl)]-1H-benzoimidazole),which is an intermediate for *** in sub-microcosmic surroundings was realized to study interfacial *** reaction kinetics study by a visualization technique was carried out in a mini-reactor,and the concentration-gray scale standard curves for thioether were obtained by analyzing the gray scales of digital *** on the concentration-gray scale standard curves,the reactant concentrations at different times were calculated,and the reaction kinetics curve and reaction rate equation were *** the total mass-transfer resistance from bulk phase to interface of sodium imidazole and bromopyridine was ***-liquid interface of synthesizing thioether was observed and its mass transfer mechanism was discussed.

关键词：可视化合成硫醚浓度-灰度标准曲线反应动力学液液相界面

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硅溶胶ζ电位与胶体结构研究

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涂料工业 1990年第5期20卷 1-4页

作者：陈金芳徐洁湖北美华日用化工厂

本文通过对ζ电位与胶体结构的研究,提出了工业上用碱性硅溶胶经离子交换制备酸性或其他特殊规格硅溶胶的理论。报道了部分硅溶胶产品ζ电位的分析数据及测试方法。

关键词：硅溶胶 ξ电位胶体结构无机涂料

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含β-二酮结构的丙烯酰类单体的聚合研究

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高分子学报 1999年第3期9卷 381-384页

作者：陈广强陈劲芳李子臣李福绵北京大学化学学院

含有β二酮结构的烯类单体，如丙烯酰丙酮，分子中的β二酮部分存在着酮式烯醇式的互变异构现象［１～３］，张亦帆等对此进行了详细的研究［４］．ＣＨ２ＣＨＣＯＣＨ２ＣＯＣＨ３ＣＨ２ＣＨＣＯＨＯＣＨＣＣＨ３ＣＨ２ＣＨＣＯ... 详细信息

含有β二酮结构的烯类单体，如丙烯酰丙酮，分子中的β二酮部分存在着酮式烯醇式的互变异构现象［１～３］，张亦帆等对此进行了详细的研究［４］．ＣＨ２ＣＨＣＯＣＨ２ＣＯＣＨ３ＣＨ２ＣＨＣＯＨＯＣＨＣＣＨ３ＣＨ２ＣＨＣＯＨＯＣＨＣＣＨ３此类单体不同于一般...

关键词： 4-乙酰基-2-甲基-1-己烯-3,5二酮 β-三酮自由基聚合三甲基氢硅烷

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电解制备焦磷酸锰(Ⅲ)盐工艺条件及动力学研究

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无机盐工业 2019年第9期51卷 24-29页

作者：刘思浩陈金芳王岩武汉工程大学化工与制药学院绿色化工过程教育部重点实验室

首次采取二极室在焦磷酸介质中电解制备可溶性三价锰盐。分别研究了电流密度、焦磷酸浓度、电解温度等因素对电极反应制备可溶性三价锰盐浓度和电流效率的影响。通过单因素条件实验进行了工艺参数的优化,对工艺的影响因素进行了具体的... 详细信息

首次采取二极室在焦磷酸介质中电解制备可溶性三价锰盐。分别研究了电流密度、焦磷酸浓度、电解温度等因素对电极反应制备可溶性三价锰盐浓度和电流效率的影响。通过单因素条件实验进行了工艺参数的优化,对工艺的影响因素进行了具体的解释分析,并对焦磷酸介质下锰(Ⅲ)/锰(Ⅱ)在石墨电极上的动力学参数进行了计算。最佳工艺条件:电解时间为5 h左右,电流密度为10.87 mA/cm2,电解温度为0℃,电解液为0.3 mol/L磷酸二氢锰+3 mol/L焦磷酸。在最佳工艺条件下电解制备可溶性三价锰的浓度最高,而且电流效率也较高。通过电化学测试的参数进行动力学计算,锰(Ⅲ)/锰(Ⅱ)在0.3 mol/L磷酸二氢锰+3 mol/L焦磷酸电解液中为准可逆过程,过程的条件电极电位为1.315 V ***,二价锰离子在这个体系中的扩散系数为8.347×10-6cm2/s。

关键词：可溶性三价锰焦磷酸电解动力学

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