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Gas-phase catalytic hydration of I2O5 in the polluted coastal regions: Reaction mechanisms and atmospheric implications

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Journal of Environmental Sciences 2022年第4期114卷 412-421页

作者： Yan Liang Hui Rong Ling Liu Shaobing zhang xiuhui zhang Wenguo Xu School of Chemistry and Chemical Engineering Beijing Institute of Technology

Marine aerosols play an important role in the global aerosol system. In polluted coastal regions, ultra-fine particles have been recognized to be related to iodine-containing species and is more serious due to the impact of atmospheric pollutants. Many previous studies have identified iodine pentoxide（I2O5, IP） to be the key species in new particles formation（NPF） in marine regions, but the role of IP in the polluted coastal atmosphere is far to be fully understood. Considering the high humidity and concentrations of pollutants in the polluted coastal regions, the gas-phase hydration of IP catalyzed by sulfuric acid（SA）, nitric acid（NA）,dimethylamine（DMA）, and ammonia（A） have been investigated at DLPNO-CCSD（T）//ωB97 XD/aug-cc-pVTZ + aug-cc-pVTZ-PP with ECP28 MDF（for iodine） level of theory. The results show that the hydration of IP involves a significant energy barrier of 22.33 kcal/mol, while the pollutants SA, NA, DMA, and A all could catalyze the hydration of IP. Especially, with SA and DMA as catalysts, the hydration reactions of IP present extremely low barriers and high rate constants. It is suggested that IP is unstable under the catalysis of SA and DMA to generate iodic acid, which is the key component in NPF in marine regions. Thus, the catalytic hydration of IP is very likely to trigger the formation of iodine-containing *** research provides a clear picture of the catalytic hydration of IP as well as theoretical guidance for NPF in the polluted coastal atmosphere.

关键词： Iodine oxides Iodine pentoxide Catalytic hydration Atmospheric pollutants Proton transfer

The formation mechanism of sulfamic Acid(SFA)from gaseous SO3 and NH3 in polluted area

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The formation mechanism of sulfamic Acid(SFA)from gaseous SO...

Langmuir单分子膜在海洋飞沫气溶胶表面特性研究中的应用

第十三届全国量子化学会议

作者： Hao Li Jiannan Ji xiuhui zhang Key Laboratory of Cluster Science Ministry of Education of ChinaSchool of ChemistryBeijing Institute of Technology

Sulfamic acid(SFA) is formed by the reaction of SO and NH,which is an another effective atmospheric loss process of gaseous S03 in addition to forming sulfuric acid with water.1,2 However,the energy barrier(26.96 Kcal/mol) of SO and NH reaction is very high,indicating that there may exist a third body can fast remove the excess kinetic *** common organic and inorganic acids in atmosphere as catalysts of this reaction are studied and the results show that formic acid is the most effective catalyst by reducing the barrier height to near 7.83 Kcal/***,considering the rather high concentration of NH(10 molecules cm) in polluted environment,this reaction could be quite easy to happen in the polluted area.

关键词： Sulfamic acid formation mechanism energy barrier

来源： cnki会议评论

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化学进展 2021年第10期33卷 1721-1730页

作者：程淑敏杜林张秀辉葛茂发山东大学环境研究院青岛266237 北京理工大学化学与化工学院原子分子簇科学教育部重点实验室北京100081 中国科学院化学研究所分子动态与稳态结构国家重点实验室北京100090

被表面活性有机物包裹的液相气溶胶,如海洋飞沫气溶胶(SSA),通常具有反胶束的结构,它由有机分子形成的疏水表面和一个水相内核构成。SSA界面有机膜的组分和形态对其物理、化学和光学特性有重要的影响。Langmuir单分子膜是由脂肪酸、脂... 详细信息

被表面活性有机物包裹的液相气溶胶,如海洋飞沫气溶胶(SSA),通常具有反胶束的结构,它由有机分子形成的疏水表面和一个水相内核构成。SSA界面有机膜的组分和形态对其物理、化学和光学特性有重要的影响。Langmuir单分子膜是由脂肪酸、脂肪醇和磷脂等具有低挥发性的长链表面活性有机物在空气-水界面上扩散形成的单层分子薄膜。采用Langmuir槽可以测定水-气界面的单组分或复合组分单分子膜的表面压随分子面积变化的曲线(π-A曲线),从而揭示相应单分子膜的界面特性,进而预测表面活性剂在实际SSA中的命运和行为。本文综述了常用大气气溶胶界面表征技术、基于单分子膜建立的SSA模型以及有机膜对SSA大气行为的影响。虽然目前对SSA相关单分子膜的物理性质和形貌变化已有深入的研究,但是对于反应性气体、光照和生物活性物质等环境因素引起的界面变化却很少有关注,本文为未来的实验室模拟和模式研究提供了新的思路。

关键词：单分子膜海洋飞沫气溶胶表面特性气-液界面大气行为

细胞凋亡相关蛋白在前列腺癌的表达及其临床病理意义

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华西医科大学学报 2000年第2期31卷 193-196页

作者：张秀辉李俸媛姜勇华西医科大学附属第一医院病理科成都610041

为探讨P53、P16、Bc1－2和Bax蛋白在前列腺癌中的表达和其与病理学分级、临床分期及预后的关系，作者采用免疫组化SP法对51例前列腺癌中上述四种蛋白的表达进行了检测。结果显示：P53、P16、Bc1-2和Bax蛋白在前列腺癌的阳性表达率分别... 详细信息

为探讨P53、P16、Bc1－2和Bax蛋白在前列腺癌中的表达和其与病理学分级、临床分期及预后的关系，作者采用免疫组化SP法对51例前列腺癌中上述四种蛋白的表达进行了检测。结果显示：P53、P16、Bc1-2和Bax蛋白在前列腺癌的阳性表达率分别为31．37％、54．90％、21．57％和74．51％；P53和Bc1-2蛋白的表达与前列腺癌的病理学分级和临床分期呈正相关（P＜0.05），而P16和Bax蛋白的表达与前列腺癌的病理分级和临床分期呈负相关（P＜0．05）。P53蛋白的表达还与患者的生存率相关。P53与Bc1－2，以及Bc1－2与Bax表达之间也存在相关性（P＝0．05）。由此提示，检测P53、P16、Bc1-2和Bax四种蛋白的表达，将有助于对前列腺癌患者病理学分级、临床分期和预后的判断。

关键词：前列腺癌细胞凋亡临床病理免疫组织化学

基于FMF-YOLOv5的光伏组件红外图像故障诊断

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计算机工程与应用 2025年第2期61卷 327-334页

作者：张莉莉王修晖中国计量大学信息工程学院浙江省电磁波信息技术与计量检测重点实验室杭州310018

针对红外图像对比度较低、故障特征不明显的问题,提出全新的融合注意力机制(fusion attention mechanism,FAM),增强有效故障特征信息。创建新的融合金字塔池化(fusion spatial pyramid pooling,FSPP),增强特征提取能力。引入一种改进多... 详细信息

针对红外图像对比度较低、故障特征不明显的问题,提出全新的融合注意力机制(fusion attention mechanism,FAM),增强有效故障特征信息。创建新的融合金字塔池化(fusion spatial pyramid pooling,FSPP),增强特征提取能力。引入一种改进多层次融合卷积(multi-level fusion convolution,MFConv),利用MFConv构建的多层次跨阶段局部网络(multi-level cross stage partial network,MCSP)模块代替CSP模块,在提高少量模型参数量情况下,增加模型检测准确性。实验结果表明,在IoU阈值为0.5的情况下,该方法的平均精度(mAP)达到了93.1%。为光伏系统提供了可靠、高效的故障检测解决方案,从而使其成为提高系统性能和降低维护费用的实用解决方案。

关键词：目标检测光伏故障特征融合融合注意力

The missing base molecules in atmospheric acid-base nucleation

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National Science Review 2022年第10期9卷 196-208页

作者： Runlong Cai Rujing Yin Chao Yan Dongsen Yang Chenjuan Deng Lubna Dada Juha Kangasluoma Jenni Kontkanen Roope Halonen Yan Ma xiuhui zhang Pauli Paasonen Tuukka Pet?j? Veli-Matti Kerminen Yongchun Liu Federico Bianchi Jun Zheng Lin Wang Jiming Hao James N.Smith Neil M. Donahue Markku Kulmala Douglas R.Worsnop Jingkun Jiang State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Institute for Atmospheric and Earth System Research/Physics Faculty of Science University of Helsinki Aerosol and Haze Laboratory Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Nanjing University of Information Science and Technology Laboratory of Atmospheric Chemistry Paul Scherrer Institute Center for Joint Quantum Studies and Department of Physics School of Science Tianjin University Key Laboratory of Cluster Science Ministry of Education of China School of Chemistry and Chemical Engineering Beijing Institute of Technology Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3) Department of Environmental Science and Engineering Fudan University Chemistry Department University of California Center for Atmospheric Particle Studies Carnegie Mellon University Department of Chemistry Carnegie Mellon University Aerodyne Research Inc.

Transformation of low-volatility gaseous precursors to new particles affects aerosol number concentration,cloud formation and hence the *** clustering of acid and base molecules is a major mechanism driving fast nucleation and initial growth of new particles in the ***,the acid-base cluster composition,measured using state-of-the-art mass spectrometers,cannot explain the measured high formation rate of new *** we present strong evidence for the existence of base molecules such as amines in the smallest atmospheric sulfuric acid clusters prior to their detection by mass *** demonstrate that forming（H2SO4）1（amine）1is the rate-limiting step in atmospheric H2SO4-amine nucleation and the uptake of（H2SO4）1（amine）1is a major pathway for the initial growth of *** proposed mechanism is very consistent with measured new particle formation in urban Beijing,in which dimethylamine is the key base for H2SO4nucleation while other bases such as ammonia may contribute to the growth of larger *** findings further underline the fact that strong amines,even at low concentrations and when undetected in the smallest clusters,can be crucial to particle formation in the planetary boundary layer.

关键词： new particle formation acid-base nucleation aerosol polluted urban environment

PROLONGED PARALYSIS OF CHILDREN TREATED WITH SCOPOLAMINE ACUPOINT INJECTION

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World Journal of Acupuncture-Moxibustion 1993年第1期3卷 27-30,38页

作者： zhang xiuhui Xiong Cuifeng Deng Jihua Kong Qingfang Tu Junjie Consultant: Wei Jia, Jiangxi College of TCM, Nanchang, Jiangxi 330006, China

Authors reported 209 cases of childish paralysis. Of them 104 cases were treatedwith scopolamine acupoint injection, and another 105 cases were divided into 3 groups and treatedwith scopolamine intramuscular injection, Salviae miltiorrhizae acupoint injection and acupuncture re-spectively as control. The results show that the therapeutic effect of scopolamine acupoint injection ismuch better than that of all other groups.

关键词： Scopolamine Salviae Paralysis Acupoint injection

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英语词汇教学中的语义联想、探源与建构

辽宁医学院学报（社会科学版） 2012年第2期10卷 126-128页

作者：张秀会渤海大学辽宁锦州121013

英语词汇教学一直以来都是英语教学的重点和难点,应着眼于充实和完善学习者的整个英语知识体系。语义联想和结构联想使学习者在巩固原有词汇知识基础上吸收新词;词源的深入探究使词汇更加牢固地进入学习者知识体系之中;个人意义建构使... 详细信息

英语词汇教学一直以来都是英语教学的重点和难点,应着眼于充实和完善学习者的整个英语知识体系。语义联想和结构联想使学习者在巩固原有词汇知识基础上吸收新词;词源的深入探究使词汇更加牢固地进入学习者知识体系之中;个人意义建构使词汇和学习者个人经验相关,增强了学习效果。

关键词：词汇教学联想探源意义建构

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检测分析糖尿病患者的血液流变学指标

中国医药科学 2012年第19期2卷 111-111,120页

作者：张秀惠吉林省和龙林业局医院检验科吉林和龙133500

目的了解糖尿病患者的血液流变学各项指标变化及检测分析。方法采用全自动血液黏度动态分析仪对确诊患者(观察组)和普通体检者(对照组)逐一进行血液流变学的检测。结果糖尿病患者血液流变学检测结果均高于健康体检者,两组比较差异有统... 详细信息

目的了解糖尿病患者的血液流变学各项指标变化及检测分析。方法采用全自动血液黏度动态分析仪对确诊患者(观察组)和普通体检者(对照组)逐一进行血液流变学的检测。结果糖尿病患者血液流变学检测结果均高于健康体检者,两组比较差异有统计学意义(P<0.05)。结论糖尿病患者普遍存在血液流变学改变,其异常结果可能是造成糖尿病持续进展的重要原因之一。因此,要定期对糖尿病患者进行血液流变学检测,对患者的治疗、疗效观察以及延缓患者的并发症都有很重要的意义。

关键词：糖尿病血液流变学检测分析