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Synergistic effects of CeO_(2)/Cu_(2)O on CO catalytic oxidation:Electronic interaction and oxygen defect

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Journal of Rare Earths 2022年第8期40卷 1211-1218页

作者： Chengyan Ge Jingfang Sun Qing Tong Weixin zou Lulu Li Lin Dong School of Chemistry and Chemical Engineering Yancheng Institute of TechnologyYancheng 224051China Jiangsu Key Laboratory of Vehicle Emissions Control Center of Modern AnalysisSchool of the EnvironmentNanjing UniversityNanjing 210093China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

For CO catalytic oxidation,Cu and Ce species are of great importance,between which the synergistic effect is worth *** this work,CeO_(2)/Cu_(2)O with Cu_(2)O{111}and{100}planes were comparatively explored on CO catalytic oxidation to reveal the effects of interfacial electronic interactions and oxygen *** activity result demonstrates that CeO_(2)/o-Cu_(2)O{111}has superior performance compared with CeO_(2)/c-Cu_(2)O{100}.Credit to the coordination unsaturated copper atoms(Cu_(CUS))on oCu_(2)O{111}surface,the interfacial electronic interactions on CeO_(2)/o-Cu_(2)O{111}are more obvious than those on CeO_(2)/c-Cu_(2)O{100},leading to richer oxygen defect generation,better redox and activation abilities of CO and O_(2)***,the reaction mechanism of CeO_(2)/o-Cu_(2)O{111}on CO oxidation is revealed,i.e.,CO and O_(2)are adsorbed on the Cucus on Cu_(2)O{111}and oxygen defect of CeO_(2),respectively,and then synergistically promote the CO oxidation to CO_(2).The work sheds light on the designing optimized ceria and copper-based catalysts and the mechanism of CO oxidation.

关键词： CeO_(2)/Cu_(2)O{111}{100} Synergistic effect Interfacial electronic interaction Oxygen defect CO oxidation Rare earths

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中国学龄儿童心血管健康状况评价

中国学校卫生 2024年第1期45卷 30-35页

作者：王西婕邹志勇董彦会董彬马军梁万年清华大学万科公共卫生与健康学院北京100190 清华大学健康中国研究院北京大学儿童青少年卫生研究所

目的了解中国学龄儿童心血管健康状况,为促进中国学龄儿童的心血管健康提供参考依据。方法数据来源于2013年在中国7省份开展的、具有全国代表性的多中心横断面研究,其原始研究采用多阶段整群抽样方法,本研究纳入其中健康行为和健康结局... 详细信息

目的了解中国学龄儿童心血管健康状况,为促进中国学龄儿童的心血管健康提供参考依据。方法数据来源于2013年在中国7省份开展的、具有全国代表性的多中心横断面研究,其原始研究采用多阶段整群抽样方法,本研究纳入其中健康行为和健康结局指标齐全的10326名5~19岁儿童。使用美国心脏协会“生活八要素”(LE 8)指标评价中国学龄儿童的整体心血管健康状况,健康行为指标包括膳食、体力活动、烟草暴露和睡眠健康;健康结局指标包括体质量指数(BMI)、空腹血糖、血脂和血压。结果男童平均LE 8为73.3(IQR=14.4)分,女童为73.4(IQR=13.5)分。线性回归分析结果显示,与≤9岁组相比,13~15岁组健康行为得分最低,男童β值为-7.73(95%CI=-8.35~-7.12,P<0.01),女童β值为-9.15(95%CI=-9.83~-8.48,P<0.01);≥16岁组健康结局得分最低,男童β值为-7.85(95%CI=-9.07~-6.63,P<0.01),女童β值为-6.11(95%CI=-7.12~-5.09,P<0.01)。结论中国学龄儿童的心血管健康水平处于一般水平。LE 8指标不同群体间存在很大差异,需要采取有针对性的干预策略,改善学龄儿童心血管健康。

关键词：心血管系统美国心脏协会回归分析儿童

A-DA′D-A non-fullerene acceptors for high-performance organic solar cells

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Science China Chemistry 2020年第10期63卷 1352-1366页

作者： Qingya Wei Wei Liu Mario Leclerc Jun Yuan Honggang Chen Yingping zou College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China Department of Chemistry Universite LavalQuebec CityQuebec G1V 0A6Canada

Since the world-record power conversion efficiency of 15.7%was achieved for organic solar cells(OSCs)in 2019,the newly developed non-fullerene acceptor(NFA)Y6 with an A-DA′D-A structure(A denotes an electron-accepting moiety,D denotes an electron-donating moiety)has attracted increasing ***,many new A-DA′D-A NFAs have been designed and synthesized,and the A-DA′D-A NFAs have played a significant role in the development of high-performance non-fullerene organic solar cells(NF-OSCs).Compared with the classical A-D-A-type acceptors,A-DA′D-A NFAs contain an electrondeficient core(such as benzothiadiazole(BT),benzotriazole(BTA),quinoxaline(Qx),or their derivatives)in the ladder-type fused rings to fine-tune the energy levels,broaden light absorption and achieve higher electron mobility of the *** review emphasizes the recent progress on these emerging A-DA′D-A(including Y-series)*** synthetic methods of DA′D-fused rings are *** relationships between the chemical structure of the A-DA′D-A NFAs and the photovoltaic performance of the corresponding OSCs are summarized and ***,issues and prospects for further improving photovoltaic performance of the OSCs are also proposed.

关键词： organic solar cells A-DA′D-A non-fullerene acceptors electron-deficient core photovoltaic properties

Future Precipitation Extremes in China under Climate Change and Their Physical Quantification Based on a Regional Climate Model and CMIP5 Model Simulations

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Advances in Atmospheric Sciences 2021年第3期38卷 460-479页

作者： Peihua QIN Zhenghui XIE Jing zou Shuang LIU Si CHEN State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Institute of Oceanographic Instrumentation Qilu University of Technology(Shandong Academy of Sciences)Qingdao 266001China Key Laboratory of Mountain Hazards and Earth Surface Processes Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China

The atmospheric water holding capacity will increase with temperature according to Clausius-Clapeyron scaling and affects *** rates of change in future precipitation extremes are quantified with changes in surface air *** extremes in China are determined for the 21st century in six simulations using a regional climate model,RegCM4,and 17 global climate models that participated in ***,we assess the performance of the CMIP5 models and RCM runs in their simulation of extreme precipitation for the current period(RF:1982-2001).The CMIP5 models and RCM results can capture the spatial variations of precipitation extremes,as well as those based on observations:OBS and *** extremes over four subregions in China are predicted to increase in the mid-future(MF:2039-58)and far-future(FF:2079-98)relative to those for the RF period based on both the CMIP5 ensemble mean and RCM ensemble *** secular trends in the extremes of the CMIP5 models are predicted to increase from 2008 to 2058,and the RCM results show higher interannual variability relative to that of the CMIP5 ***,we quantify the increasing rates of change in precipitation extremes in the MF and FF periods in the subregions of China with the changes in surface air ***,based on the water vapor equation,changes in precipitation extremes in China for the MF and FF periods are found to correlate positively with changes in the atmospheric vertical wind multiplied by changes in surface specific humidity(significant at the p<0.1 level).

关键词： precipitation extremes regional climate model CMIP5 models

基于环境足迹分析方法的石油烃污染场地土壤绿色修复技术评价应用研究

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环境污染与防治 2024年第8期46卷 1149-1155页

作者：田平郑静芬杜耀朱于红邹传杨尚源周鸿浙江卓锦环保科技股份有限公司浙江杭州310000

以杭州市某炼油厂地块为分析案例,运用国际广泛认可的环境足迹分析电子表格(SEFA)对3种土壤修复技术(生物堆、异位化学氧化和异位热脱附)的环境足迹进行量化评估。结果表明,对于案例地块修复,生物堆技术的能耗和碳排放量最低,分别为62.6... 详细信息

以杭州市某炼油厂地块为分析案例,运用国际广泛认可的环境足迹分析电子表格(SEFA)对3种土壤修复技术(生物堆、异位化学氧化和异位热脱附)的环境足迹进行量化评估。结果表明,对于案例地块修复,生物堆技术的能耗和碳排放量最低,分别为62.63×10^(4) MJ、32.83 t,其中碳排放的关键因素为柴油;异位热脱附的能耗和碳排放量最高,分别为321.37×10^(4) MJ、197.75 t,其主要碳排放来源为天然气。通过Entropy-TOPSIS法进行权重分析,将碳排放量纳入考虑后,3种修复技术中生物堆的排队指示值最高(0.5577),是案例地块土壤修复技术的最优选择。考虑到“双碳”目标和国际“碳关税”的双重影响,建议在未来污染场地土壤修复技术评估中,应将碳排放量纳入评分标准,研究结果可为选择技术可行、经济高效、环境友好、绿色低碳的土壤修复技术提供方法学和理论支持。

关键词：石油烃污染生物堆异位化学氧化异位热脱附环境足迹碳排放 Entropy-TOPSIS法

金线莲ArLBD1基因克隆、亚细胞定位及表达分析

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北方园艺 2024年第1期 100-106页

作者：林江波黄惠明邹晖李和平戴艺民福建省农业科学院亚热带农业研究所福建漳州363005

以金线莲(Anoectochilus roxburghii)叶片的转录组数据为基础,采用RT-PCR技术克隆到了金线莲ArLBD1转录因子基因,采用生物信息学、原核表达、Western blot、亚细胞定位及qPCR等方法对该基因功能进行初步分析,以期为进一步研究其功能提... 详细信息

以金线莲(Anoectochilus roxburghii)叶片的转录组数据为基础,采用RT-PCR技术克隆到了金线莲ArLBD1转录因子基因,采用生物信息学、原核表达、Western blot、亚细胞定位及qPCR等方法对该基因功能进行初步分析,以期为进一步研究其功能提供参考依据。结果表明:ArLBD1基因CDS长度864 bp,编码287个氨基酸。ArLBD1蛋白分子量为30.62 kD,理论等电点为6.25,不稳定系数55.55,属于不稳定蛋白。ArLBD1蛋白含有LOB superfamily保守结构域,第7~28氨基酸为C基序,第36~84氨基酸为GAS基序,第89~107氨基酸为类亮氨酸拉链基序,具有完整的类亮氨酸拉链基序,属于ClassⅠ。系统进化分析表明ArLBD1与拟南芥AtLBD36的亲缘关系最近,其次是AtLBD6。SDS-PAGE电泳及Western blot结果显示,ArLBD1基因在大肠杆菌中成功诱导表达。亚细胞定位分析发现ArLBD1蛋白定位在细胞核。qPCR分析结果表明,ArLBD1基因在金线莲叶、茎和根中都能检测到表达,在叶片表达量最高,其次是根,茎的表达量最低,推测ArLBD1基因主要在金线莲叶片发育中发挥功能。

关键词：金线莲 ArLBD1 亚细胞定位基因克隆原核表达

武汉市昼夜温差对60岁及以上老年人缺血性心脏病住院量的影响

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环境与职业医学 2024年第8期41卷 898-904页

作者：吴亚静刘星媛秦孟雪杜雅婷左秀然邹宇量武汉大学公共卫生学院流行病与卫生统计学系/健康管理研究中心武汉市卫生健康信息中心

[背景]昼夜温差（DTR）与老年人心血管健康密切相关，但是缺少关于DTR与老年人缺血性心脏病（IHD）的研究。[目的]探究DTR对武汉市60岁及以上老年人IHD每日住院量的影响。[方法]获取2017年1月1日至2018年12月31日期间武汉市全部二级及... 详细信息

[背景]昼夜温差（DTR）与老年人心血管健康密切相关，但是缺少关于DTR与老年人缺血性心脏病（IHD）的研究。[目的]探究DTR对武汉市60岁及以上老年人IHD每日住院量的影响。[方法]获取2017年1月1日至2018年12月31日期间武汉市全部二级及以上医院IHD老年住院患者信息和同期气象数据及空气污染数据，根据每日最高温度和最低温度计算每日DTR。采用基于类泊松分布的分布滞后非线性模型分析DTR与60岁及以上老年人住院的关联。以DTR的第1百分位数（P1:1.8℃）、第5百分数（P5:2.9℃）、95百分位数(P95:14.3℃)和第99百分位数(P99:16.2℃)来评估极端DTR对武汉市60岁及以上老年人IHD住院的影响。进一步根据性别、年龄（60～74岁和≥75岁）、不同亚型（急性IHD和慢性IHD）进行分层，分别分析DTR对不同性别、年龄和不同亚型IHD住院的影响。[结果]共纳入武汉市2017年至2018年60岁及以上老年人首次IHD住院病例64 212例。武汉市DTR与老年居民IHD住院风险累积滞后7 d的暴露-反应关系呈现“J型”分布，最适DTR为5.0℃，DTR越大，滞后时间越长，老年人因IHD住院风险越高。极高DTR（P99:16.2℃）在暴露当天（lag 0）效应明显，滞后7 d时的累积效应达到1.58（95%CI:1.25～1.99）。DTR对不同性别、年龄人群的IHD和不同亚型IHD的总体影响与总人群呈现相似特征。与急性IHD （RR=1.29,95%CI:1.04～1.61）相比，高DTR对慢性IHD住院的影响更大（RR=1.46,95%CI:1.20～1.79）。在累积滞后7 d时，60～74岁老年人（RR=1.78,95%CI:1.30～2.42）比≥75岁（RR=1.35,95%CI:1.08～1.70）老年人IHD住院受高DTR的影响更大。[结论]高DTR能显著增加老年人IHD住院风险，慢性IHD患者和60～74岁的老年人受到高DTR的影响更为明显。

关键词：老年人昼夜温差缺血性心脏病分布滞后非线性住院风险

Real-time prediction of mechanical behaviors of underwater shield tunnel structure using machine learning method based on structural health monitoring data

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第4期15卷 886-895页

作者： Xuyan Tan Weizhong Chen Tao zou Jianping Yang Bowen Du State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China University of Chinese Academy of Sciences Beijing100049China State Key Laboratory of Software Development Environment Beihang UniversityBeijing100191China

Predicting the mechanical behaviors of structure and perceiving the anomalies in advance are essential to ensuring the safe operation of infrastructures in the long *** addition to the incomplete consideration of influencing factors,the prediction time scale of existing studies is ***,this study focuses on the development of a real-time prediction model by coupling the spatio-temporal correlation with external load through autoencoder network(ATENet)based on structural health monitoring(SHM)*** autoencoder mechanism is performed to acquire the high-level representation of raw monitoring data at different spatial positions,and the recurrent neural network is applied to understanding the temporal correlation from the time ***,the obtained temporal-spatial information is coupled with dynamic loads through a fully connected layer to predict structural performance in next 12 *** a case study,the proposed model is formulated on the SHM data collected from a representative underwater shield *** robustness study is carried out to verify the reliability and the prediction capability of the proposed ***,the ATENet model is compared with some typical models,and the results indicate that it has the best *** model is of great value to predict the realtime evolution trend of tunnel structure.

关键词： Shied tunnel Machine learning Monitoring Real-time prediction Data analysis

Molecular mechanisms of inhibiting glucosyltransferases for biofilm formation in Streptococcus mutans

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International Journal of Oral Science 2021年第3期13卷 243-250页

作者： Qiong Zhang Qizhao Ma Yan Wang Hui Wu Jing zou State Key Laboratory of Oral Diseases National Clinical Research Center for Oral Diseases and Department of Pediatric DentistryWest China Hospital of StomatologySichuan UniversityChengduChina Department of Integrative Biomedical and Diagnostic Sciences Oregon Health and Science University School of DentistryPortlandORUSA

Glucosyltransferases(Gtfs)play critical roles in the etiology and pathogenesis of Streptococcus mutans(***)-mediated dental caries including early childhood *** enhance the biofilm formation and promotes colonization of cariogenic bacteria by generating biofilm extracellular polysaccharides(EPSs),the key virulence property in the cariogenic ***,Gtfs have become an appealing target for effective therapeutic interventions that inhibit cariogenic ***,targeting Gtfs selectively impairs the *** virulence without affecting *** existence or the existence of other species in the oral *** the past decade,numerous Gtfs inhibitory molecules have been identified,mainly including natural and synthetic compounds and their derivatives,antibodies,and metal *** therapeutic agents exert their inhibitory role in inhibiting the expression gtf genes and the activities and secretion of Gtfs enzymes with a wide range of sensitivity and *** molecular mechanisms of inhibiting Gtfs will contribute to instructing drug combination strategies,which is more effective for inhibiting Gtfs than one drug or class of *** review highlights our current understanding of Gtfs activities and their potential utility,and discusses challenges and opportunities for future exploration of Gtfs as a therapeutic target.

关键词： inhibiting mechanisms instru