环境科学研究最新文献

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Handwashing Behavior of Chinese Population during the COVID-19 Epidemic 新冠肺炎疫情期间中国人群的洗手行为
环境科学研究 Pub Date : 2020-07-01 DOI: 10.13198/J.ISSN.1001-6929.2020.06.17
S. Cao, Jianing Wei, Xing Chen, Q. Guo, Fangyuan Zheng, X. Duan
{"title":"Handwashing Behavior of Chinese Population during the COVID-19 Epidemic","authors":"S. Cao, Jianing Wei, Xing Chen, Q. Guo, Fangyuan Zheng, X. Duan","doi":"10.13198/J.ISSN.1001-6929.2020.06.17","DOIUrl":"https://doi.org/10.13198/J.ISSN.1001-6929.2020.06.17","url":null,"abstract":"Direct contact and droplet transmission are the main routes of novel coronavirus transmission Reasonable handwashing behavior is an effective prevention and control measure to cut off the exposure routes and reduce the risk of virus infection, which may play an important role in the prevention and control of novel coronavirus pneumonia (COVID-19) epidemic In this study, an electronic questionnaire was used to investigate the handwashing behavior and handwashing time of 8330 adults in 31 provinces in China during February 25th to March 14th, 2020, and the factors affecting hand-washing behavior in different exposure scenarios were then analyzed The results show that the proportion and duration of hand-washing by women and urban residents were higher than that of men and rural residents, respectively People were more likely to wash their hands in general exposure scenarios, while in scenarios with high risk of viral infections, such as after coughing or sneezing and after touching others, the proportion of handwashing was the lowest, 73 6% and 83 9%, respectively, indicating that the virus transmission routes and protection measures of this population need to be understood in depth In terms of handwashing time, according to the standards of handwashing time (20 s) stipulated by WHO, only 41 7% of the population could reach the qualified level (that is more than 20 s), and the passing rate of urban residents' handwashing time was significantly higher than that in rural areas (42 0% vs 39 7%) In general, the handwashing proportion of the people who went out was higher than those who never went out Whether there were suspected and confirmed cases in the residential areas during the epidemic period had a significant impact on residents' handwashing behavior However, the passing rate of handwashing time for the residents in the regions with the most severe epidemic was the lowest (37 2%), while the passing rate of handwashing time for the residents in the regions with the least epidemic was the highest (43 6%), indicating that the residents' hand-washing behavior may be affected by the epidemic and other factors This study indicates that compared with non-epidemic period, the incidence of handwashing behavior among Chinese residents during the epidemic period increased, and the qualified rate of handwashing time was improved However, the rate was still low Thus, people's awareness of handwashing behavior should be improved, and the protective measures should be implemented scientifically More attention should be paid to the anti-epidemic effect of handwashing when formulating relevant polices and personal protection © 2020, Editorial Board, Research of Environmental Sciences All right reserved","PeriodicalId":21108,"journal":{"name":"环境科学研究","volume":"33 1","pages":"1659-1667"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42729241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
中国典型城市群PM 2.5 污染特征研究进展 中国典型城市群PM 2.5 污染特征研究进展
环境科学研究 Pub Date : 2020-02-25 DOI: 10.13198/J.ISSN.1001-6929.2019.08.29
刘晟东, 史君楠, 程勇, 卢培利, 冯婷, 王锋文, 张培玉
{"title":"中国典型城市群PM 2.5 污染特征研究进展","authors":"刘晟东, 史君楠, 程勇, 卢培利, 冯婷, 王锋文, 张培玉","doi":"10.13198/J.ISSN.1001-6929.2019.08.29","DOIUrl":"https://doi.org/10.13198/J.ISSN.1001-6929.2019.08.29","url":null,"abstract":"为进一步梳理近年来我国城市区域大气PM2.5污染防治方面的研究成果,基于我国31个城市PM2.5污染现状,以城市群为视角,总结了京津冀城市群、长三角城市群与川渝城市群PM2.5组成与污染特征,分析了PM2.5及其含碳气溶胶、水溶性无机离子、地壳元素等的整体特征,并在城市群间进行对比分析.结果表明:①3个城市群的ρ(PM2.5)高低顺序依次为京津冀城市群>川渝城市群>长三角城市群,长距离传输使PM2.5污染成为京津冀城市群、长三角城市群与川渝城市群面临的共同问题.②3个城市群的PM2.5中均以SNA和OC为主,尽管ρ(PM2.5)水平有下降趋势,但个别污染物(如SNA)略呈上升趋势.③京津冀城市群与川渝城市群的ρ(OC)接近,并且均高于长三角城市群的80%,较高的ρ(OC)/ρ(EC)反映我国城市群普遍存在SOC污染.④各城市群PM2.5监测网(如监测时间和采样方法)发展水平迥异,城市群之间的相互影响和传输机制尚不清楚.建议今后的研究向以下几个方面扩展:①对城郊乡村等大气背景点,以及水库、湖泊等地化循环的重要源汇区域开展研究.②针对同一区域开展采样时段更长且研究方法和分析手段上保持一致的研究.③借用国外经验公式时需考虑我国国情,对基础研究方法开展一系列优化,建立符合我国国情的标准化研究方法.","PeriodicalId":21108,"journal":{"name":"环境科学研究","volume":"33 1","pages":"243-251"},"PeriodicalIF":0.0,"publicationDate":"2020-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44020046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
天然有机质对土霉素在西北灰钙土上吸附行为的影响 天然有机质对土霉素在西北灰钙土上吸附行为的影响
环境科学研究 Pub Date : 2019-03-01 DOI: 10.13198/j.issn.1001-6929.2019.02.18
石磊平 | 蒋煜峰 | 广阿龙 | 原陇苗 | 刘兰兰 | 展惠英
{"title":"天然有机质对土霉素在西北灰钙土上吸附行为的影响","authors":"石磊平 | 蒋煜峰 | 广阿龙 | 原陇苗 | 刘兰兰 | 展惠英","doi":"10.13198/j.issn.1001-6929.2019.02.18","DOIUrl":"https://doi.org/10.13198/j.issn.1001-6929.2019.02.18","url":null,"abstract":"","PeriodicalId":21108,"journal":{"name":"环境科学研究","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142051453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DIDP通过线粒体-Caspase途径诱导昆明小鼠肝脏损伤的研究 DIDP通过线粒体-Caspase途径诱导昆明小鼠肝脏损伤的研究
环境科学研究 Pub Date : 2018-07-25 DOI: 10.13198/j.issn.1001-6929.2018.07.09
李瑶 | 路雨 | 胡赢丹 | 李秋林 | 赵云 | 李睿
{"title":"DIDP通过线粒体-Caspase途径诱导昆明小鼠肝脏损伤的研究","authors":"李瑶 | 路雨 | 胡赢丹 | 李秋林 | 赵云 | 李睿","doi":"10.13198/j.issn.1001-6929.2018.07.09","DOIUrl":"https://doi.org/10.13198/j.issn.1001-6929.2018.07.09","url":null,"abstract":"","PeriodicalId":21108,"journal":{"name":"环境科学研究","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142051073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
基于J&E/AAM模型的污染场地VOCs风险防控 基于J&E/AAM模型的污染场地VOCs风险防控
环境科学研究 Pub Date : 2018-06-25 DOI: 10.13198/j.issn.1001-6929.2018.01.03
逯雨, 李义连, 杨森, 朱艳, 李泉, 唐志
{"title":"基于J&E/AAM模型的污染场地VOCs风险防控","authors":"逯雨, 李义连, 杨森, 朱艳, 李泉, 唐志","doi":"10.13198/j.issn.1001-6929.2018.01.03","DOIUrl":"https://doi.org/10.13198/j.issn.1001-6929.2018.01.03","url":null,"abstract":"土壤或地下水中挥发性有机污染物经包气带迁移后进入建筑物,导致室内污染物聚集危害人体健康.为研究场地蒸气入侵的过程及影响因素,以苯为例,借助一维J&E解析模型和二维近似解析AAM模型,探究土壤性质参数对污染场地建筑物底板处蒸气衰减系数和室内蒸气衰减系数的影响,并分析两个模型的适用条件.结果表明,室内蒸气浓度(Cin)取决于建筑物底板处蒸气浓度(Cck)和土壤气体进入室内的速率(Qck).J&E模型中,室内蒸气衰减系数(αsin)随着地基埋深增加先减后增,而AAM模型中室内蒸气衰减系数一直呈上升趋势.毛细管的存在使蒸气衰减系数降低1~2个数量级,土壤水分也可有效阻挡蒸气向上扩散.在低渗透土壤条件下,两个模型计算的室内蒸气衰减系数均在10-4左右;在高渗透土壤条件下,建筑物底板处对流作用强烈,J&E模型建筑物底板处蒸气浓度减小,室内蒸气衰减系数在10-3左右,AAM模型建筑物底板处蒸气浓度为定值,室内蒸气衰减系数随土壤渗透系数的变化大致呈线性增长,且比J&E模型结果高1~2个数量级.研究显示,当污染场地建筑物底部对流作用强烈或在砂土、壤土类土壤中,采用J&E模型更为合理;对流较弱或在粉土、黏土中,可以采用AAM模型代替J&E模型,简化计算过程,便于进行场地风险评估.污染物蒸气在砂土中穿透力较强,而黏土层可以有效阻挡蒸气的迁移,在实际场地风险管控中,可以采用换土或表层覆盖黏土的方法阻挡蒸气的迁移.","PeriodicalId":21108,"journal":{"name":"环境科学研究","volume":"22 2","pages":"868-877"},"PeriodicalIF":0.0,"publicationDate":"2018-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41270787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
陕西省PM 2.5 时空分布规律及其影响因素 The spatiotemporal distribution pattern and influencing factors of PM 2.5 in Shaanxi Province
环境科学研究 Pub Date : 2018-05-25 DOI: 10.13198/j.issn.1001-6929.2018.01.16
南国卫, 孙虎, 朱一梅
{"title":"陕西省PM 2.5 时空分布规律及其影响因素","authors":"南国卫, 孙虎, 朱一梅","doi":"10.13198/j.issn.1001-6929.2018.01.16","DOIUrl":"https://doi.org/10.13198/j.issn.1001-6929.2018.01.16","url":null,"abstract":"PM2.5是导致中国多省市发生灰霾的罪魁祸首,明确其时空分布规律,厘清其影响因素对灰霾的综合治理意义深远.基于陕西省2015年50个监测站点的PM2.5浓度数据,采用空间数据统计方法、克里金插值法以及Morlet小波分析法对陕西省PM2.5浓度的时空分布规律进行研究,并运用灰色关联模型来探讨PM2.5浓度的影响因素.结果显示:①陕西省PM2.5浓度整体呈'冬高夏低、春秋居中'的季节性变化规律,'U型'起伏的月变化规律,周期性脉冲波动型的日变化规律以及'W型'起伏的时变化规律;②陕西省PM2.5浓度呈'北部低,中南部高'的空间分布特征,并且空间集聚性显著.不同季节的高值区均集聚于海拔相对较低的关中盆地内部城市.这与盆地内部空气不易扩散,静稳天气出现频率较高,易出现逆温现象密切相关;③影响陕西省PM2.5浓度最大的指标层是PM2.5污染来源(权重值为0.49),其次是城市化与土地利用(权重值为0.37),气象与地形因子影响最小(权重值为0.15).不同城市各指标层的综合关联度差异较大.④各指标因子与PM2.5浓度均为强度关联.降水量、机动车保有量、二氧化硫排放量、烟粉(尘)排放量、建成区面积、人口密度和人均GDP是影响陕西省PM2.5浓度的主要因子,影响各城市PM2.5浓度的主要因子具有一定的空间差异性.研究显示,人类活动对陕西省PM2.5的影响显著,尤其是城市化的快速推进,相关指标(如人口、机动车、能耗、工业总产值等)持续增长,将进一步加大PM2.5来源的多样性以及相关污染物的排放量.","PeriodicalId":21108,"journal":{"name":"环境科学研究","volume":"31 1","pages":"834-843"},"PeriodicalIF":0.0,"publicationDate":"2018-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42355306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
昆明市大气总悬浮颗粒物和PM 2.5 上多溴联苯醚的分布特征和潜在风险 Distribution characteristics and potential risks of polybrominated biphenyl ethers on total suspended particulate matter and PM 2.5 in the atmosphere of Kunming City
环境科学研究 Pub Date : 2018-05-25 DOI: 10.13198/j.issn.1001-6929.2018.03.01
高淑梅, 黎潇, 李晓曼, 毕婷婷, 潘学军, 韩丰霞
{"title":"昆明市大气总悬浮颗粒物和PM 2.5 上多溴联苯醚的分布特征和潜在风险","authors":"高淑梅, 黎潇, 李晓曼, 毕婷婷, 潘学军, 韩丰霞","doi":"10.13198/j.issn.1001-6929.2018.03.01","DOIUrl":"https://doi.org/10.13198/j.issn.1001-6929.2018.03.01","url":null,"abstract":"为探究PBDEs(多溴联苯醚)在昆明大气中的环境行为,于2014年3月对昆明8个采样点大气TSP(总悬浮颗粒物)和PM2.5样本进行了收集并利用GC-MS技术对其上附着的PBDEs的13种同系物进行了测定,进而对TSP和PM2.5上PBDEs的分布特征和潜在风险进行了分析.结果表明:附着在TSP上的∑PBDE浓度(多溴联苯醚的总质量浓度)的范围为21.10~175.00 pg/m3.而附着在PM2.5上的∑PBDE浓度范围为17.50~149.00 pg/m3,约占TSP中∑PBDE浓度的35.31%~85.14%,并且高溴化的同系物(BDE-138~BDE-209)比低溴化的同系物(BDE-17~BDE-99)更容易附着在PM2.5上,约占∑PBDE浓度的8.50%~61.60%.对大气颗粒物中PBDEs的潜在影响和空气吸入暴露剂量评估结果表明,成人和儿童对PBDEs的DEDair(呼吸日暴露量)分别在5.28~43.75和6.90~57.23 pg/(kg·d)之间,TDI(每日总摄入量)分别在114.78~951.09和150.00~1 244.13 pg/(kg·d)之间,远低于最低无害水平[1 mg/(kg·d)].BDE-99的TDI分别为11.09~72.39和14.35~94.57 pg/(kg·d),均低于最低摄入水平[260 pg/(kg·d)].研究显示,昆明市大气TSP和PM2.5上的PBDEs对人体不存在健康风险.","PeriodicalId":21108,"journal":{"name":"环境科学研究","volume":"31 1","pages":"860-867"},"PeriodicalIF":0.0,"publicationDate":"2018-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43473846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
和田市城区PM 2.5 化学组成特征及来源分析 和田市城区PM 2.5 化学组成特征及来源分析
环境科学研究 Pub Date : 2018-05-25 DOI: 10.13198/j.issn.1001-6929.2017.04.23
苏吾比努尔·热克甫, 玉散·吐拉甫, 迪丽努尔·塔力甫, 王新明, 阿布力克木·阿不力孜, 亚力昆江·吐尔逊, 丁翔
{"title":"和田市城区PM 2.5 化学组成特征及来源分析","authors":"苏吾比努尔·热克甫, 玉散·吐拉甫, 迪丽努尔·塔力甫, 王新明, 阿布力克木·阿不力孜, 亚力昆江·吐尔逊, 丁翔","doi":"10.13198/j.issn.1001-6929.2017.04.23","DOIUrl":"https://doi.org/10.13198/j.issn.1001-6929.2017.04.23","url":null,"abstract":"为了解中国极干旱区域和田市城区大气PM2.5的组成特征及污染水平,于2014年1-12月采集和田市城区大气PM2.5样品,并用气相色谱-质谱联用仪(GC-MS)、离子色谱仪(IC)、电感耦合等离子体质谱仪(ICP-MS)及元素分析仪分析其中PAHs(多环芳烃)、金属元素、水溶性无机离子、OC(有机碳)和EC(元素碳)等化学组分.结果表明,采样期间和田市城区大气PM2.5质量浓度年均值为(770.11±568.01)μg/m3,呈夏季最高、冬季最低趋势;金属元素、水溶性无机离子、OC、EC、∑16 PAHs(总多环芳烃)分别占PM2.5质量浓度的15.292%、9.789%、4.246%、0.331%、0.015%.利用PMF(正交矩阵因子分解法)分别对PM2.5中PAHs和金属元素、水溶性无机离子、OC、EC进行来源解析表明,PAHs主要来源为煤和汽油燃烧排放(13.91%)、生物质燃烧(33.98%)、天然气燃烧(52.11%);金属元素、水溶性无机离子、OC、EC的主要来源为土壤尘(56.49%)、油类燃烧(25.49%)、机动车排放(10.09%)、燃煤及生物质燃烧(7.93%).研究显示,采样期间沙尘对和田市城区大气PM2.5组成影响较大,是该地区大气污染来源的主要因素.","PeriodicalId":21108,"journal":{"name":"环境科学研究","volume":"31 1","pages":"823-833"},"PeriodicalIF":0.0,"publicationDate":"2018-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46881247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
天津市春季道路降尘PM 2.5 中重金属污染特征及健康风险评价 Heavy metal pollution characteristics and health risk assessment of PM 2.5 in spring road dust in Tianjin
环境科学研究 Pub Date : 2018-05-25 DOI: 10.13198/j.issn.1001-6929.2018.03.12
李越洋, 姬亚芹, 王士宝, 张蕾, 赵静琦
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引用次数: 0
典型“组群式”城市夏季大气颗粒物中水溶性离子化学特征及来源 Chemical characteristics and sources of water-soluble ions in summer atmospheric particulate matter of typical "cluster" cities
环境科学研究 Pub Date : 2018-04-25 DOI: 10.13198/J.ISSN.1001-6929.2018.01.07
欧盛菊, 吴丽萍, 王信梧, 张向炎, 任丽红, 杨文, 白志鹏
{"title":"典型“组群式”城市夏季大气颗粒物中水溶性离子化学特征及来源","authors":"欧盛菊, 吴丽萍, 王信梧, 张向炎, 任丽红, 杨文, 白志鹏","doi":"10.13198/J.ISSN.1001-6929.2018.01.07","DOIUrl":"https://doi.org/10.13198/J.ISSN.1001-6929.2018.01.07","url":null,"abstract":"为探究典型“组群式”城市——淄博市夏季大气颗粒物中水溶性离子化学特征及来源,于2016年8月对淄博市6个城市点(桓台、张店、临淄、淄川、博山、周村)、2个郊区点(沂源、高青)及1个清洁对照点(鲁山)同步进行PM2.5和PM10采样,分析了大气颗粒物质量浓度及9种水溶性离子的空间分布特征,并利用主成分分析方法探讨了PM2.5和PM10中水溶性离子的主要来源.结果表明:①淄博夏季各点位(清洁对照点除外)PM2.5和PM10质量浓度日均值范围分别为57.2~112和77.4~163 μg/m3,空间分布特征表现为城市点>郊区点>清洁对照点;各点位PM2.5/PM10(质量浓度之比)在0.61~0.80之间,表明淄博夏季大气颗粒物污染以PM2.5为主.②水溶性离子在PM2.5和PM10中占比分别为53.3%和48.5%,其中二次无机离子分别占总离子浓度的91.4%和83.7%,表明大气颗粒物主要以二次离子为主,并且主要富集在PM2.5中;PM2.5中∑阴离子/∑阳离子(摩尔浓度之比)为1.07,PM10中该比值为0.87,说明PM2.5接近中性,而PM10呈弱碱性.③淄博夏季各点位离子来源具有一定的空间差异性,城市点、郊区点与清洁对照点间的CD(分歧系数)均高于0.2,而城市点间CD值低于0.2,说明城市点位间的水溶性离子的化学性质较为相似.④主成分分析表明,淄博夏季大气PM2.5中的水溶性离子可能主要来源于工业源、生物质锅炉、燃煤、二次源、道路尘及建筑尘,而PM10中的离子主要来源于道路尘、建筑尘、海盐及二次源.研究显示,淄博市颗粒物污染严重,具有明显的空间分布特征,水溶性离子来源复杂,应采取分区、多源控制的污染防治对策.","PeriodicalId":21108,"journal":{"name":"环境科学研究","volume":"31 1","pages":"669-678"},"PeriodicalIF":0.0,"publicationDate":"2018-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45628191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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