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Operational Evaluation of the Quantitative Precipitation Estimation by a CINRAD-SA Dual Polarization Radar System

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Journal of Tropical Meteorology 2020年第2期26卷 176-187页

作者： CHEN chao LIU Li-ping HU Sheng wu Zhi-fang wu Chong ZHANG Yang Guangdong Meteorological Observatory Guangzhou 510641 China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081 China

In this paper,a quantitative precipitation estimation based on the hydrometeor classification(HCA-QPE)algorithm was proposed for the first operational S band dual-polarization radar upgraded from the CINRAD/SA radar of *** HCA-QPE algorithm,localized Colorado State University-Hydrometeor Identification of Rainfall(CSUHIDRO)algorithm,the Joint Polarization Experiment(JPOLE)algorithm,and the dynamic Z-R relationships based on variational correction QPE(DRVC-QPE)algorithm were evaluated with the rainfall events from March 1 to October 30,2017 in Guangdong *** results indicated that even though the HCA-QPE algorithm did not use the observed rainfall data for correction,its estimation accuracy was better than that of the DRVC-QPE algorithm when the rainfall rate was greater than 5 mm h-1;and the stronger the rainfall intensity,the greater the QPE ***,the HCA-QPE algorithm worked better than the localized CSU-HIDRO and JPOLE *** study preliminarily evaluated the improved accuracy of QPE by a dual-polarization radar system modified from CINRAD-SA radar.

关键词： quantitative precipitation estimation operational QPE evaluation with dual-polarization radar optimization algorithm dual-polarization radar hydrometeor classification dynamic Z-R relations algorithm

Investigating missing sources of glyoxal over China using a regional air quality model (RAMS-CMAQ)

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Journal of Environmental Sciences 2018年第9期30卷 108-118页

作者： Jialin Li Meigen Zhang Guiqian tang Fangkun wu Leonardo M.A. Alvarado Mihalis Vrekoussis Andreas Richter John P. Burrows State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPQ) Institute of Atmospheric Physics (IAP)Chinese Academy of Sciences (CAS) Beijing 100029 China University of Chinese Academy of Sciences Beijing 100049 China Center for Excellence in Urban Atmospheric Environment Institute of Urban Environment Chinese Academy of Sciences Xiamen 361021 China Institute of Environmental Physics and Remote Sensing IUP University of Bremen D-28203 Bremen Germany Center of Marine Environmental Sciences MARUM University of Bremen D-28203 Bremen Germany Energy Environment and Water Research Center the Cyprus Institute CY2121 Nicosia Cyprus

Currently, modeling studies tend to significantly underestimate observed space-based glyoxal （CHOCHO） vertical column densities （VCDs）, implying the existence of missing sources of giyoxal. Several recent studies suggest that the emissions of aromatic compounds and molar yields of glyoxal in the chemical mechanisms may both be underestimated, which can affect the simulated glyoxal concentrations. In this study, the influences of these two factors on glyoxal amounts over China were investigated using the RAMS-CMAQ modeling system for January and July 2014. Four sensitivity simulations were performed, and the results were compared to satellite observations. These results demonstrated significant impacts on glyoxal concentrations from these two factors. In case 1, where the emissions of aromatic compounds were increased three-fold, improvements to glyoxal VCDs were seen in high anthropogenic emissions regions. In case 2, where molar yields of glyoxal from isoprene were increased five-fold, the resulted concentrations in July were B-B-fold higher, achieving closer agreement between the modeled and measured glyoxal VCDs. The combined changes from both cases 1 and 2 were applied in case B, and the model succeeded in further reducing the underestimations of glyoxal VCDs. However, the results over most of the regions with pronounced anthropogenic emissions were still underestimated. So the molar yields of giyoxal from anthropogenic precursors were considered in case 4. With these additional mole yield changes （a two-fold increase）, the improved concentrations agreed better with the measurements in regions of the lower reaches of the Yangtze River and Yellow River in January but not in July.

关键词： Glyoxal Volatile organic compounds Molar yields RAMS-CMAQ China

Variation of nitric oxide emission potential in plants: a possible link to leaf N content and net photosynthetic activity

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Journal of Plant Ecology 2015年第3期8卷 313-320页

作者： Juan Chen chao Wang Fei-Hua wu Wen-Hua Wang Ting-wu Liu Juan Chen Qiang Xiao Bin-Yuan He Hai-Lei Zheng Key Laboratory for Subtropical Wetland Ecosystem Research of MOE College of the Environment and EcologyXiamen UniversityXiamen 361005China State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China Laboratory of Biological Resources Protection and Utilization of Hubei Province Hubei Institutes for NationalitiesEnshi 445000China Guangxi Academy of Oceanography Naning 530022China

Aims Ecological systems,especially soils,have been recently recognized as an important source of atmospheric nitric oxide(No).However,the study on the contribution of plants to atmospheric No budget is significantly *** specific objectives of this study are to reveal the phylogenetic variation in No emission potential existing in various plant species and find out the possible leaf traits affecting No emission *** We measured No emission potential,leaf N and C content,C:N ratio,specific leaf area,net photosynthetic rate(Pn)and estimated photosynthetic N use efficiency(PNuE)of 88 plant *** investigation of the relationships between No emission potential and leaf traits were performed by simple linear regression analysis and pair-wise correlation coefficients *** Findingsmajor results are as follows:(1)No emission from plant species exhibited large variations,ranging from 0 to 41.7 nmol m^(−2) h^(−1),and the species frequency distributions of No emission potential could be fitted to a log-normal curve.(2)among 88 species,No emission potential was the highest in Podocarpus macrophyllus,but lowest in Zanthoxylum nitidum and Vernicia montana.(3)No emission potential has strong correlation to leaf N content,Pn and *** variations in No emission potential among diverse plant species may be closely related to leaf N level and net photosynthetic ability.

关键词： leaf N content leaf trait net photosynthetic rate nitric oxide phylogenetic variation

Endoscopic-catheter-directed infusion of diluted(-)-noradrenaline for atypical hemobilia caused by liver abscess:A case report

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World Journal of Clinical Cases 2022年第10期10卷 3306-3312页

作者： Hong Zou Yi Wen Yong Pang Hui Zhang Lin Zhang Li-Jun tang Hong wu Department of Liver Surgery&Liver Transplantation State Key Laboratory of Biotherapy and Cancer CenterWest China HospitalSichuan University and Collaborative Innovation Center of BiotherapyChengdu 610044Sichuan ProvinceChina Department of General Surgery&Pancreatic Injury and Repair Key Laboratory of Sichuan Province The General Hospital of Western Theater Command(Chengdu Military General Hospital)Chengdu 610083Sichuan ProvinceChina

BACKGROUND Hemobilia occurs when there is a fistula between hepatic blood vessels and biliary radicles,and represents only a minority of upper gastrointestinal *** of hemobilia are varied,but liver abscess rarely causes hemobilia and only a few cases have been ***,we present a case of atypical hemobilia caused by liver abscess that was successfully managed by endoscopic hepatobiliary intervention through endoscopic retrograde cholangiopancreatography(ERCP).CASE SUMMARY A 54-year-old man presented to our emergency department with a history of right upper quadrant abdominal colic and repeated fever for 6 *** sonography and enhanced computed tomography revealed that there was an abscess in the right anterior lobe of the *** hospitalization,the patient developed upper gastrointestinal *** gastrointestinal endoscopy revealed a duodenal ulcer bleeding that was treated with three metal ***,the hemodynamics was still ***,upper gastrointestinal endoscopy was performed again and fresh blood was seen flowing from the ampulla of *** angiography did not show any *** endoscopic nasobiliary drainage(ENBD)tube was inserted into the right anterior bile duct through ERCP,and subsequently cold saline containing(-)-noradrenaline was infused into the bile duct lumen through the ENBD tube with no episode of further *** Hemobilia should be considered in the development of liver abscess,and endoscopy is essential for diagnosis and management of some cases.

关键词： Hemobilia Liver abscess Noradrenaline Endoscopic retrograde cholangiopancreatography Case report

挤压成形和回火温度对DT300钢力学性能的影响分析

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工程与试验 2024年第3期64卷 44-46页

作者：张潮春张瑞涛李欣懋唐超蔺广学张明民重庆红宇精密工业集团有限公司重庆402760

本文研究了挤压成形和不同回火温度对DT300钢力学性能的影响,并分析了各工艺条件下的影响规律,以获得最佳材料力学性能,为指导企业生产、促进DT300钢的推广应用提供了有效的试验数据。

关键词：超高强度钢力学性能挤压成形回火温度

Association of family history with long-term prognosis in patients undergoing liver resection of HBV-related hepatocellular carcinoma

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Hepatobiliary Surgery and Nutrition 2019年第2期8卷 88-100页

作者： Zhen-Li Li Jun Han Kai Liu Hao Xing Han wu Wan Yee Lau Timothy MPawlik chao Li Ming-Da Wang Jiong-Jie Yu Meng-chao wu Feng Shen Tian Yang Department of Hepatobiliary Surgery Eastern Hepatobiliary Surgery HospitalSecond Military Medical UniversityShanghai 200438China Faculty of Medicine Chinese University of Hong KongShatinNew TerritoriesHong KongChina Department of Surgery Ohio State UniversityWexner Medical CenterColumbusOHUSA

Background:Family history is a risk factor for the development of hepatocellular carcinoma(HCC).The aim of the current study was to investigate the association between family history of HCC and long-term oncologic prognosis among patients undergoing curative liver resection for hepatitis B virus(HBV)-related ***:Patients who underwent curative liver resection of HBV-related HCC between 2003 and 2013 were consecutively *** history was defined as a self-reported history of HCC in a first-degree *** score matching(PSM)and multivariable Cox-regression analyses were performed to compare overall survival(OS)and recurrence-free survival(RFS)among patients with and without a family ***:Among 1,112 patients,183(16.5%)patients had a family history of *** PSM,179 pairs of patients with and without a family history were created that had no differences in the baseline characteristics and operative *** matched analysis,family history was associated with decreased OS and RFS after curative-intent resection of HBV-related HCC in the propensity matching cohort(P=0.042 and 0.006,respectively).On multivariable Cox-regression analyses,a family history of HCC was associated with decreased OS(HR:1.574;95%CI:1.171–2.116;P=0.003)and RFS(HR:1.534;95%CI:1.176–2.002;P=0.002)after adjusting for other prognostic risk ***:Family history was associated with decreased OS and RFS rates among patients undergoing curative liver resection of HBV-related HCC.

关键词： Hepatocellular carcinoma(HCC) hepatitis B hepatectomy survival recurrence

Near room-temperature ferromagnetism in air-stable twodimensional Cr_(1−x)Te grown by chemical vapor deposition

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Nano Research 2022年第4期15卷 3763-3769页

作者： Zhansheng Gao Ming tang Junwei Huang Jiabiao Chen Wei Ai Linglu wu Xinyue Dong Yifei Ma Zheshan Zhang Lei Zhang Yaping Du Huixia Fu Hongtao Yuan Jinxiong wu Feng Luo Tianjin Key Lab for Rare Earth Materials and Applications Center for Rare Earth and Inorganic Functional MaterialsSchool of Materials Science and EngineeringNankai UniversityTianjin 300350China National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesNanjing UniversityNanjing 210093China Center of Quantum Materials and Devices&College of Physics Chongqing UniversityChongqing 401331China Beijing National Laboratory for Molecular Sciences Beijing 100871China

Identifying air-stable two-dimensional(2D)ferromagnetism with high Curie temperature(T_(c))is highly desirable for its potential applications in next-generation ***,most of the work reported so far mainly focuses on promoting one specific key factor of 2D ferromagnetism(T_(c)or air stability),rather than comprehensive promotion of both of ***,ultrathin Cr_(1-x)Te crystals grown by chemical vapor deposition(CVD)show thickness-dependent T_(c)up to 285 *** out-of-plane ferromagnetic order is well preserved down to atomically thin limit(2.0 nm),as evidenced by anomalous Hall effect observed in non-encapsulated ***,the CVD-grown Cr_(1-x)Te nanosheets present excellent ambient stability,with no apparent change in surface roughness or electrical transport properties after exposure to air for *** work provides an alternative platform for investigation of intrinsic 2D ferromagnetism and development of innovative spintronic devices.

关键词： Cr1-xTe room-temperature ferromagnetism air stability anomalous Hall effect chemical vapor deposition

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陶渊明《五柳先生传》文体性质论

苏州教育学院学报 2024年第1期41卷 1-10页

作者：吴怀东安徽大学文学院安徽合肥230039

《五柳先生传》历来被视作反映陶渊明个人生活与思想的代表作,具有“实录”性质。然而,传主信息的模糊性、行为的传奇性却表明此文并非陶渊明个人生活的如实记录。实际上,汉代以来兴起的史书“杂传”为其提供了基本的文体要素,此文人物... 详细信息

《五柳先生传》历来被视作反映陶渊明个人生活与思想的代表作,具有“实录”性质。然而,传主信息的模糊性、行为的传奇性却表明此文并非陶渊明个人生活的如实记录。实际上,汉代以来兴起的史书“杂传”为其提供了基本的文体要素,此文人物的类型化、内容的虚构性、精神的娱乐性与思想的寄托性表明其并非典型的“杂传”,而是在“杂传”基础上发展出来的具有鲜明的小说因素或小说性质—兼具典型性、叙事性、虚构性和寄托性—是作为现代文体意义上的单篇小说唐传奇的“前身”。陶渊明并非生活在社会主流之外,《五柳先生传》显示了陶渊明复杂深刻的生命体验和强大的文化创新能力及杰出的文学创造力,反映出其与社会主流文化的深刻互动。

关键词：陶渊明《五柳先生传》文体散文杂传小说

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甘油氯化催化剂的制备和应用研究

广州化工 2024年第4期52卷 79-81页

作者：王良广唐计光郜婷婷刘悦徐伟伟尹超山东鲁泰控股集团股份有限公司石墨烯高分子复合材料研发中心山东济宁272000

本文针对当前甘油氯化制备环氧氯丙烷存在的甘油纯度要求高、催化活性差、二氯丙醇收率低等问题,合成了6种新型的复合催化剂,并对甘油氯化反应条件进行了研究。研究确定了最优的反应条件,在最优的反应条件下,6种复合催化剂均表现出较优... 详细信息

本文针对当前甘油氯化制备环氧氯丙烷存在的甘油纯度要求高、催化活性差、二氯丙醇收率低等问题,合成了6种新型的复合催化剂,并对甘油氯化反应条件进行了研究。研究确定了最优的反应条件,在最优的反应条件下,6种复合催化剂均表现出较优的催化活性,甘油的转化率高达100%,二氯丙醇的收率最高为92%。复合催化剂A-Fe-Zn-Al对甘油原料的适用范围较广,对于甘油含量70%的粗甘油可直接合成二氯丙醇,二氯丙醇的收率高达88%。

关键词：甘油二氯丙醇氯化催化剂