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Strategies of Response to Public Concerns during Public Emergencies in the Context of Modern Governance:Taking COVID-19 Pandemic as an Example

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学术界 2020年第4期 203-212页

作者： kong zeming Wang Junqiu College of the Humanities Jilin University Changchun Jilin 130012

Public emergencies are generally sudden with huge real or potential danger to the whole *** COVID-19 pandemic is a typical public emergency with a long duration involving a wide range of people,and has extremely bad social *** pandemic can be classified into four stages:initial stage,outbreak stage,durative stage and post-pandemic *** focus of mass media varied according to the characteristics of different *** on different stages,mass media should change their roles timely and always be aware of the mainstream ideological construction in public opinions to firmly control the direction of public opinion by using the theory and method of communication.

关键词： public emergencies response to public concerns COVID-19 pandemic

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明清时期辣椒在中国的传播及饮食文化影响

文化创新比较研究 2023年第27期7卷 81-86页

作者：张恺烺孔泽鸣福建师范大学福建福州350117 海南大学海南海口570208

辣椒原产自秘鲁,15世纪末哥伦布于航海大发现中将其由南美洲传至欧洲,半世纪后经由海上贸易传入亚非沿海国家及商贸城镇,届时在世界范围内得到了广泛传播,为人们熟知。辣椒自明末传入我国,呈“满天星斗”状向内陆地区传播,经历了观赏—... 详细信息

辣椒原产自秘鲁,15世纪末哥伦布于航海大发现中将其由南美洲传至欧洲,半世纪后经由海上贸易传入亚非沿海国家及商贸城镇,届时在世界范围内得到了广泛传播,为人们熟知。辣椒自明末传入我国,呈“满天星斗”状向内陆地区传播,经历了观赏—药用—食用三个认知阶段后,被我国民众逐渐容纳,在我国饮食结构中扮演着不可或缺的重要角色,形成了以“长江中上游”地区为主的食辣文化群,最终影响了以“川、湘”菜系为首的辣味菜肴。在“哥伦布物种大交流”的全球化背景下,美洲辣椒的引种、传播对我国本土饮食文化造成了严重的冲击,打破了我国的传统饮食结构,催生出独特的食辣文化,最终实现了我国辣椒从“客体”向“主体”的演变。

关键词：辣椒作物交换食辣文化明清时期饮食文化中外交流史

硫酸盐还原菌修复四川某典型铜矿选冶渣复合重金属污染研究

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金属矿山 2024年第3期 278-283页

作者：朱乐明傅开彬钟秋红刘泽铭孔云龙固体废物处理与资源化教育部重点实验室四川绵阳621010 西南科大四川天府新区创新研究院四川成都610299 四川城市职业学院四川成都610110

为实现铜矿选冶渣复合重金属污染的修复治理,以四川某铜矿选冶渣为研究对象,采用硫酸盐还原菌为固化/稳定化微生物,探讨了其生长特性、溶液中重金属离子变化规律及修复效果。结果表明,硫酸盐还原菌在修复铜矿选冶渣时生长迅速,适合作为... 详细信息

为实现铜矿选冶渣复合重金属污染的修复治理,以四川某铜矿选冶渣为研究对象,采用硫酸盐还原菌为固化/稳定化微生物,探讨了其生长特性、溶液中重金属离子变化规律及修复效果。结果表明,硫酸盐还原菌在修复铜矿选冶渣时生长迅速,适合作为修复复合重金属污染的微生物;由于铁、锌、铜、铅等重金属活性差异较大,因此其固化效果亦有显著差异;修复30 d时,重金属Cu、Pb、Zn、Fe的最佳接种量分别为5%、10%、15%和15%,生物有效性降低率分别为72.36%、98.37%、43.01%和79.31%;随着固化时间的增加,溶液中重金属离子的浓度先增后减,但并不影响其修复效果。因此,硫酸盐还原菌可同时修复多种重金属离子,有效解决某铜矿选冶渣中铁锌铜铅的复合重金属污染。

关键词：铜矿选冶渣硫酸盐还原菌复合重金属污染生物有效性

四川里伍铜尾矿中铁闪锌矿和磁黄铁矿的高效分离回收试验

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金属矿山 2024年第6期 123-129页

作者：傅开彬李贺付华洪刘泽铭孔云龙朱乐明西南科技大学环境与资源学院四川绵阳621010 四川里伍铜业股份有限公司西科大里伍铜业产业技术创新研究院四川甘孜626000 西南科大四川天府新区创新研究院四川成都610299 会理鹏晨废渣利用有限公司四川会理615100

为综合回收四川里伍铜矿选铜尾矿中的有价元素锌、硫,采用优先浮选试验筛选了铁闪锌矿和磁黄铁矿的高效活化剂、捕收剂等,并进行了闭路试验。结果表明:试验样采用1粗4精2扫选锌、1粗3精3扫选硫闭路工艺流程处理,可获得锌品位45.62%、锌... 详细信息

为综合回收四川里伍铜矿选铜尾矿中的有价元素锌、硫,采用优先浮选试验筛选了铁闪锌矿和磁黄铁矿的高效活化剂、捕收剂等,并进行了闭路试验。结果表明:试验样采用1粗4精2扫选锌、1粗3精3扫选硫闭路工艺流程处理,可获得锌品位45.62%、锌回收率85.83%的锌精矿,硫品位39.98%、硫回收率75.67%的硫精矿,锌精矿达到七级产品质量要求,硫精矿达到二级产品质量要求,较好地实现了铁闪锌矿和磁黄铁矿的浮选分离。

关键词：铜尾矿铁闪锌矿磁黄铁矿高效分离

Are spatial distributions of major elements in soil influenced by human landscapes?

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Acta Geochimica 2018年第4期37卷 571-577页

作者： Huan Yu Zhengwei He zeming Shi Bo kong College of Earth Sciences Chengdu University of Technology Institute of Mountain Hazards and Environment Chinese Academy of Sciences

The present study attempted to evaluate the influence of human activity on major elements(Na_2O,MgO, Al_2O_3, SiO_2, K_2O, CaO, Fe_2O_3), and to find a method to explore correlations between major elements and human disturbances, according to geospatial theories and methods. The study results indicate that landscapes influence major elements in diverse ways: Al_2O_3 is closely related to road and mine landscapes; strong relationships exist between MgO, Fe_2O_3, CaO, and SiO_2 and roads;Na_2O, SiO_2, and Fe_2O_3 are unrelated to city landscapes;and Na_2O is unrelated to road and mine landscapes.

关键词：城市风景元素空间分布 Fe2O3 土壤 SiO2 Na2O Fe2O3

Microplastic pollution and enrichment of distinct microbiota in sediment of mangrove in Zhujiang River estuary,China

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Journal of Oceanology and Limnology 2023年第1期41卷 215-228页

作者： Muting YAN Xiaofeng CHEN Wei CHU Weixin LI Minqian LI zeming CAI Han GONG College of Marine Sciences South China Agricultural UniversityGuangzhou 510641China Department of Civil and Environmental Engineering the Hong Kong Polytechnic UniversityHong Kong 999077China

The microbial communities colonized on microplastics(MPs)have attracted widespread ***,few studies focused on the MPs impacts on mangrove ecosystems,particularly on bacterial *** investigated the MPs pollution in mangrove of Zhujiang(Pearl)River estuary(ZRE).To study the potential risk posed by MPs to the mangrove ecosystems,the differences in bacterial communities,functions,and complexity between MPs and sediment samples were reported for the first ***(2991±1586 items/kg dry weight(dw))in sediment were mainly fibers and polyethylene,mostly transparent,and in size less than 0.5 *** communities and functions significantly differed from MPs in mangrove *** with sediment,MPs significantly enriched members of Proteobacteria,Bacteroidetes,and Actinobacteria,as well as the bacteria associated with plastic-degrading and human diseases on their surface,suggesting that microbial communities on MPs may promote MPs degradation and the spread of diseases,posing potential risk to mangrove ecosystems and human *** bacteria on MPs exhibited a lower diversity,the co-occurrence network analysis indicated that network of bacteria colonized on MPs was bigger and more complex than those of mangrove sediment,illustrating that MPs can act as a distinct habitat in this special *** study provides a new perspective for increasing our understanding of microplastic pollution in mangrove ecosystems.

关键词： microplastic(MP) mangrove sediment microbial community bacterial function co-occurrence network

Reactivity,Regioselectivity,and Synthetic Application of 2-Pyrenyl Units in Scholl Reactions

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CCS Chemistry 2023年第9期5卷 2069-2077页

作者： Sai Ho Pun Ethan Chi Ho Wen zeming Xia Han Chen Felix RFischer Qian Miao Department of Chemistry The Chinese University of Hong KongHong Kong Department of Chemistry University of CologneCologne Department of Chemistry University of CaliforniaBerkeleyCalifornia 94720 Materials Sciences Division Lawrence Berkeley National LaboratoryBerkeleyCalifornia 94720 Kavli Energy NanoScience Institute at the University of California Berkeley and the Lawrence Berkeley National Laboratory BerkeleyCalifornia 94720 Bakar Institute of Digital Materials for the Planet Division of ComputingData Scienceand SocietyUniversity of CaliforniaBerkeleyCalifornia 94720

We herein report the reactivity and regioselectivity of 2-pyrenyl as a coupling unit in Scholl *** the basis of the Scholl reactions of hexaarylbenzene substrates,we have found that pyrenyl units are preferably oxidized over naphthyl and phenyl units under appropriate Scholl reaction conditions,allowing divergent synthesis through a highly controllable intramolecular coupling *** find that the C1 and C3 positions of the 2-pyrenyl unit are the favorable sites for intramolecular coupling while C4 is not reactive to allow further *** reactivity and regioselectivity pattern can be explained by the spin density distribution,which shows that carbon-carbon bonds preferably form at sites with higher positive spin *** by these findings,we successfully synthesized a double helicene and a sextuple helicene through the controlled Scholl reactions of 2-pyrenyl units.

关键词： helicene polycyclic aromatics pyrene Scholl reactions spin density

舟山普陀山机场制冷机房多智能体分布式节能控制系统应用

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制冷与空调 2024年第07期24卷 39-43页

作者：刘峥李元阳阎杰方兴管绪磊胡钦胡炯培毛治力杜泽明孙笑寒广东美的暖通设备有限公司上海美控智慧建筑有限公司

针对舟山普陀山机场冷源系统的节能改造和控制管理需求，从制冷机房系统设计、冷源系统控制技术等方面提出多种节能途径，并对制冷机房系统的实际运行能耗进行分析。结果表明，多智能体分布式节能控制系统的应用可以大幅提高制冷机房的... 详细信息

针对舟山普陀山机场冷源系统的节能改造和控制管理需求，从制冷机房系统设计、冷源系统控制技术等方面提出多种节能途径，并对制冷机房系统的实际运行能耗进行分析。结果表明，多智能体分布式节能控制系统的应用可以大幅提高制冷机房的运行效率，在舟山普陀山机场的节能改造应用中，使得空调系统节能40.1%,有效提高制冷机房的自动化管理水平，实现较好的节能效果。

关键词：空调制冷机房冷源分布式控制能耗节能

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生物炭协同微生物修复四川某铜矿选冶渣重金属复合污染研究

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金属矿山 2023年第9期 240-246页

作者：刘泽铭傅开彬钟秋红孔云龙朱乐明固体废物处理与资源化教育部重点实验室四川绵阳621010 西南科大四川天府新区创新研究院四川成都610299 四川城市职业学院四川成都610110

为了解决四川某选冶渣多重金属复合污染问题,采用生物炭固化微生物试验和吸附动力学试验,研究生物炭与微生物的协同作用对多种重金属的修复效果、多种重金属在生物炭表面的吸附动力学行为。使用傅里叶红外光谱(FTIR)与扫描电镜(SEM),探... 详细信息

为了解决四川某选冶渣多重金属复合污染问题,采用生物炭固化微生物试验和吸附动力学试验,研究生物炭与微生物的协同作用对多种重金属的修复效果、多种重金属在生物炭表面的吸附动力学行为。使用傅里叶红外光谱(FTIR)与扫描电镜(SEM),探究生物炭基团强化微生物修复重金属的界面机理。结果表明,在厌氧气氛下,硫酸盐还原菌(SBR)和嗜酸性氧化亚铁硫杆菌(At.f,pH=5.0)以体积比3∶2混合,接种量为20%,生物炭添加量10%,固化30 d后,选冶渣中铁、锌、铜、铅和铬的生物有效性降低率分别为98.37%、90.32%、90.81%、96.52%和100%,吸附动力学试验表明反应过程是化学反应。傅里叶红外光谱与扫描电镜分析表明,重金属与生物炭表面羟基和羧基等基团反应,以沉淀的形式将Zn、Cu等重金属固化/稳定化,降低其生物有效性。

关键词：铜矿选冶渣硫酸盐还原菌嗜酸性亚铁硫杆菌生物炭生物有效性