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Fast spreading of surface ozone in both temporal and spatial scale in Pearl River Delta

Journal of Environmental Sciences 2024年第3期137卷 540-552页

作者： Tianhui cao Haichao Wang Lei li Xiao Lu Yiming liu Shaojia Fan School of Atmospheric Sciences Sun Yat-sen University and Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Guangdong Provincial Observation and Research Station for Climate Environment and Air Quality Change in the Pearl River Estuary Key Laboratory of Tropical Atmosphere-Ocean SystemMinistry of EducationZhuhai 519082China

Surface ozone(O_(3))is a major air pollutant and draw increasing attention in the Pearl River Delta(PRD),***,we characterize the spatial-temporal variability of ozone based on a dataset obtained from 57 national monitoring sites during *** results show that:(1)the seasonal difference of ozone distribution in the inland and coastal areas was significant,which was largely affected by the wind pattern reversals related to the East Asian monsoon,and local ozone production and destruction;(2)the daily maximum 8hr average(MDA8 O_(3))showed an overall upward trend by 1.11 ppbv/*** the trends in the nine cities varied differently by ranging from-0.12 to 2.51 ppbv/*** hot spots of ozone were spreading to southwestern areas from the central areas since *** ozone is becoming a year-round air pollution problem with the pollution season extending to winter and spring in PRD region.(3)at the central and southwestern PRD cities,the percentage of exceedance days from the continuous type(defined as≥3 days)was ***,the ozone concentration of continuous type was much higher than that of scattered exceedance type(line since2017,the total number of exceedance days during the continuous type is *** results indicate that it is more difficult to eliminate the continuous exceedance than the scatter pollution days and highlight the great challenge in mitigation of O_(3)pollution in these cities.

关键词： Surface ozone pollution Ozone trend Spatial and temporal variability Pearl River Delta Pollution mitigation

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苏州国医医院探索之路研究

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中华医史杂志 2005年第1期35卷 6-10页

作者：曹丽娟中国中医研究院中国医史文献研究所北京100700

苏州国医医院是民国时期的官立中医院 ,率先采用统计列表方法 ,核实经方疗效 ,并制成多种表格。还实行了其他的创新举措 ,如大胆采用西医诊断、自编教材培训护士、建立规范的病历和医案、出版院刊等等。这些有益的探索 ,受到当时中医界... 详细信息

苏州国医医院是民国时期的官立中医院 ,率先采用统计列表方法 ,核实经方疗效 ,并制成多种表格。还实行了其他的创新举措 ,如大胆采用西医诊断、自编教材培训护士、建立规范的病历和医案、出版院刊等等。这些有益的探索 ,受到当时中医界和西医界部分著名人士的较高赞誉 ,也得到日本著名汉医学家的普遍肯定。民国时期 ,中医生存艰难。面对有种种优势的西医 ,苏州国医医院辟除门户之见 ,积极向西医学习 ,以期找到中医改革的理想之路。这种探索精神 ,值得肯定。

关键词：苏州国医医院医院管理统计列表方法经方疗效护士培训病历医案规范管理

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世界粮食危机背景下我国的粮食安全问题

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南京农业大学学报（社会科学版） 2009年第2期9卷 32-37页

作者：曹历娟洪伟南京农业大学经济管理学院江苏南京210095

2006年以来,生物能源的发展使得世界粮食价格持续上涨,粮食危机成为世界大部分国家所面临的问题,中国也是如此。那么,新形势下我国的粮食安全会有怎样的发展,世界粮食危机会对我国粮食安全产生怎样的影响?本文研究了我国主要粮食产品的... 详细信息

2006年以来,生物能源的发展使得世界粮食价格持续上涨,粮食危机成为世界大部分国家所面临的问题,中国也是如此。那么,新形势下我国的粮食安全会有怎样的发展,世界粮食危机会对我国粮食安全产生怎样的影响?本文研究了我国主要粮食产品的安全问题,结果表明,世界粮食危机中价格上涨最多的是大米,但由于我国对国际市场的依赖程度不高,因此大米的粮食安全问题不大。小麦、玉米更是如此。大豆虽然是对国外市场依赖程度最大的产品,但是我国可以通过国际市场平抑波动。总体来说,我国目前的粮食安全仍在可控的范围内。

关键词：世界粮食危机粮食安全供需缺口波动

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中原地区旅游产业资源配置有效性评价

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西南师范大学学报（自然科学版） 2015年第9期40卷 72-77页

作者：曹丽娟洛阳师范学院国土与旅游学院河南洛阳471934

为实现对旅游产业资源配置有效性的科学评价,该文构建了1个三层评价模型.模型将总体配置有效性分解为3个二级指标,进而将二级指标又进一步细分为13个三级指标.选取层次分析法作为此模型的求解方法,先计算各个指标重要程度的评估矩阵,再... 详细信息

为实现对旅游产业资源配置有效性的科学评价,该文构建了1个三层评价模型.模型将总体配置有效性分解为3个二级指标,进而将二级指标又进一步细分为13个三级指标.选取层次分析法作为此模型的求解方法,先计算各个指标重要程度的评估矩阵,再计算旅游产业资源配置的总体得分.实证结论显示,自然资源对中原地区的旅游产业资源配置影响最大,服务资源次之.此外,中原地区旅游产业资源配置有效性存在较大差异,郑州的配置情况最为合理.该文的研究工作可以层次化、定量化地评价旅游产业资源配置的有效性.

关键词：旅游产业资源配置层次分析法中原地区有效性评价

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Core-shell design of UiO66-Fe_(3)O_(4) configured with EDTA-assisted washing for rapid adsorption and simple recovery of heavy metal pollutants from soil

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Journal of Environmental Sciences 2024年第5期139卷 556-568页

作者： Xi Wang Asif Hussain Qingqing li Mingyu Ma juan Wu Mingqiang Deng Jie Yang Dengxin li Department of Environmental Science and Engineering Donghua UniversityShanghai 201620China Department of Environmental Science Federal Urdu University of ArtsScience and Technology75300 KarachiPakistan Shanghai Academy of Environmental Sciences Shanghai 200233China

The coupling of washing with adsorption process can be adopted for the treatment of soils contaminated with heavy metals ***,the complex environment of soil and the competitive behavior of leaching chemicals considerably restrain adsorption capacity of adsorbent material during washing process,which demands a higher resistance of the adsorbents to *** this study,we synthesized strongly magnetic,high specific surface area(573.49 m^(2)/g)UiO66 composites(i.e.,UiO66-Fe_(3)O_(4))using hydrothermal *** UiO66-Fe_(3)O_(4) was applied as an adsorbent during the ethylene diamine tetraacetic acid(EDTA)-assisted washing process of contaminated *** incorporation of UiO66-Fe_(3)O_(4)results in rapid heavy metal removal and recovery from the soil under low concentrations of washing agent(0.001 mol/L)with reduced residual heavy metal mobility of soil after ***,UiO66-Fe_(3)O_(4)can quickly recollect by an external magnet,which offers a simple and inexpensive recovery method for heavy metals from contaminated ***,UiO66-Fe_(3)O_(4)configuration with EDTA-assisted washing process showed opportunities for heavy metals contaminated sites.

关键词： UiO66 composites Metal-EDTA complexes EDTA-assisted washing Heavy metals recovery Soil

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Surface iodine and pyrenyl-graphdiyne co-modified Bi catalysts for highly efficient CO_(2) electroreduction in acidic electrolyte

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Nano Research 2024年第4期17卷 2381-2387页

作者： Min Zhang juan Wang Xin Rong Xiu-li Lu Tong-Bu Lu MOE International Joint Laboratory of Materials Microstructure Institute for New Energy Materials and Low Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China

CO_(2) electroreduction to formic acid/formate would contribute to alleviating the energy and climate *** work reports a Bi-based catalyst derived from the in-situ electroreduction of Bi_(2)O_(2)CO_(3) modified with iodine and pyrenyl-graphdiyne(PGDY)on the surface for efficient electroreduction of CO_(2) in acidic electrolyte,with a high partial current density of 98.71 mA·cm^(-2) and high Faradaic efficiency(FE)>90%over the potential range from^(-1).2 to-1.5 V *** hydrogen electrode(RHE),as well as the long-term operational stability over 240 h without degradation in H-type *** results and density function theory calculations show that the synergistic effect of surface iodine and PGDY is responsible for this active and extremely stable process of CO_(2) electroreduction via lowering the energy barriers for formation of*OCHO intermediate,suppressing the competitive HER by enhancing the concentration of both K+and CO_(2) at reaction interface,as well as preventing the dissolution and re-deposition of active Bi atoms on surface during catalytic *** work provides new insight into designing highly active and stable electrocatalysts for CO_(2) reduction.

关键词： CO_(2) reduction electrocatalysis Bi-based catalysts acidic electrolyte

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Estimation of Physiologic Ability and Surgical Stress scoring system for predicting complications following abdominal surgery: A metaanalysis spanning 2004 to 2022

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World Journal of Gastrointestinal Surgery 2024年第1期16卷 215-227页

作者： Tian-Shu Pang li-Ping cao Department of General Surgery Sir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhou 310016Zhejiang ProvinceChina

BACKGROUND Postoperative complications remain a paramount concern for surgeons and healthcare *** To present a comprehensive analysis of the Estimation of Physiologic Ability and Surgical Stress(E-PASS)scoring system’s efficacy in predicting postoperative complications following abdominal *** A systematic search of published studies was conducted,yielding 17 studies with pertinent *** such as preoperative risk score(PRS),surgical stress score(SSS),comprehensive risk score(CRS),postoperative complications,post-operative mortality,and other clinical data were collected for *** plots were employed for continuous and binary variables,withχ2 tests assessing heterogeneity(P value).RESULTS Patients experiencing complications after abdominal surgery exhibited significantly higher E-PASS scores compared to those without complications[mean difference and 95%confidence interval(CI)of PRS:0.10(0.05-0.15);SSS:0.04(0.001-0.08);CRS:0.19(0.07-0.31)].Following the exclusion of low-quality studies,results remained valid with no discernible *** analysis indicated that variations in sample size and age may contribute to hetero-geneity in CRS *** variable meta-analysis demonstrated a correlation between high CRS and increased postoperative complication rates[odds ratio(OR)(95%CI):3.01(1.83-4.95)],with a significant association observed between high CRS and postoperative mortality[OR(95%CI):15.49(3.75-64.01)].CONCLUSION In summary,postoperative complications in abdominal surgery,as assessed by the E-PASS scoring system,are consistently linked to elevated PRS,SSS,and CRS *** CRS scores emerge as risk factors for heightened morbidity and *** study establishes the accuracy of the E-PASS scoring system in predicting postoperative morbidity and mortality in abdominal surgery,underscoring its potential for widespread adoption in effective risk assessment.

关键词： Estimation of Physiologic Ability and Surgical Stress scoring system Preoperative risk score Surgical stress score Comprehensive risk score Complications

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C2-phenyl-substituted benzimidazolium-based covalent organic framework as efficient catalyst for CO_(2) conversion without solvents,metals,and cocatalysts

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Science China Chemistry 2024年第2期67卷 551-557页

作者： Zhenzhen Wu Jing Wang lili liu Shang Guo juan li Xianming Zhang Shanxi Institute for Functional Food Shanxi Agricultural UniversityTaiyuan030031China Institute of Crystalline Materials Shanxi UniversityTaiyuan030006China Key Laboratory of Interface Science and Engineering in Advanced Materials College of ChemistryTaiyuan University of TechnologyTaiyuan030024China

Covalent organic frameworks(COFs) are a potential platform for carbon dioxide(CO_(2)) conversion owing to their periodic permanent porosity,adjustable structure,and chemical *** good catalytic performance in CO_(2) conversion,collaborative multifunctions should be strategically integrated into the catalytic system design and *** this study,a four-in-one high-efficiency catalyst was synthesized and tested for CO_(2) cycloaddition to form cyclic *** obtained Tp-MPB-BrCOF had a high nitrogen content,which enhanced its CO_(2) affinity through substantial Lewis acid-base or dipole-quadrupole interactions;moreover,the acid(protons transferring from oxygen(–OH) to nitrogen(–NH)),hydrogen bond donor(hydroxyl group),and Br-(nucleophile group) served as three active sites,further improving the catalyst *** results provide a basis for designing efficient and stable CO_(2)-conversion catalysts.

关键词： covalent organic framework C2-phenyl-substituted benzimidazolium CO_(2)conversion four-in-one catalyst

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A comprehensive analysis of DAC-SDC FPGA low power object detection challenge

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Science China(Information Sciences) 2024年第8期67卷 300-320页

作者： Jingwei ZHANG Guoqing li Meng ZHANG Xinye cao Yu ZHANG Xiang li Ziyang CHEN Jun YANG School of Electronics Science and Engineering Southeast University

The lower power object detection challenge(LPODC) at the IEEE/ACM Design Automation Conference is a premier contest in low-power object detection and algorithm(software)-hardware co-design for edge artificial intelligence, which has been a success in the past five years. LPODC focused on designing and implementing novel algorithms on the edge platform for object detection in images taken from unmanned aerial vehicles(UAVs), which attracted hundreds of teams from dozens of countries to participate. Our team SEUer has been participating in this competition for three consecutive years from 2020 to 2022 and obtained sixth place respectively in 2020 and 2021. Recently, we achieved the championship in 2022. In this paper, we presented the LPODC for UAV object detection from 2018 to 2022, including the dataset, hardware platform,and evaluation method. In addition, we also introduced and discussed the details of methods proposed by each year's top three teams from 2018 to 2022 in terms of network, accuracy, quantization method, hardware performance, and total score. Additionally, we conducted an in-depth analysis of the selected entries and results, along with summarizing representative methodologies. This analysis serves as a valuable practical resource for researchers and engineers in deploying the UAV application on edge platforms and enhancing its feasibility and reliability. According to the analysis and discussion, it becomes evident that the adoption of a hardware-algorithm co-design approach is paramount in the context of tiny machine learning(TinyML).This approach surpasses the mere optimization of software and hardware as separate entities, proving to be essential for achieving optimal performance and efficiency in TinyML applications.

关键词： algorithm-hardware co-design convolutional neural networks field programmable gate array low power object detection tiny machine learning

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Cancer statistics for young adults aged 20 to 49 years in China from 2000 to 2017:a population-based registry study

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Science China(life Sciences) 2024年第4期67卷 711-719页

作者： Yi Teng Changfa Xia He li Maomao cao Fan Yang Xinxin Yan Siyi He Mengdi cao Shaoli Zhang Qianru li Wanqing Chen Office of Cancer Screening National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China

An increasing cancer incidence among adults younger than 50 years has been reported for several types of cancer in multiple *** aimed to report cancer profiles and trends among young adults in *** from the China Cancer Registry Annual Report were used to estimate incidence and mortality among young adults(ages 20–49 years)in China in 2017,and an age-period-cohort model was employed to estimate the average annual percent change(AAPC)in incidence and mortality from 2000 to *** 25 cancer types were grouped into obesity-or overweight-associated cancers(12 cancer types)and additional cancers(13 cancer types).In 2017,there were 681,178new cases and 214,591 cancer deaths among young adults in *** young adults,the most common cancers were thyroid,breast,cervical,liver,lung,and colorectal cancer,and the leading causes of cancer deaths were liver,lung,cervical,stomach,breast,and colorectal *** 2000 to 2017,the cancer incidence increased for all cancers combined among young adults,with the highest AAPC(1.46%)for adults aged 20–24 years,while cancer mortality decreased,with the highest AAPC(-1.63%)for those aged 35–39 *** conclusion,the cancer incidence in China has increased among young adults,while cancer mortality has decreased for nearly all *** control measures,such as obesity control and appropriate screening,may contribute to reducing the increasing cancer burden among young adults.

关键词： young adults incidence mortality trends China

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