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Composition and Accumulation of Fouling during Leachate Reverse Osmosis Membrane Treatment in both a Typical Incineration Plant and a Landfill

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Wuhan University Journal of Natural Sciences 2022年第1期27卷 77-84页

作者： yu lu LI Kunyu yu Zhipeng ZENG xiaolan College of Environment and Ecology Chongqing UniversityChongqing 400045China Zhuhai Institute of Urban Planning&Design Zhuhai 519002GuangdongChina

Reverse osmosis(RO)membrane process has been extensively used for leachate treatment both in incineration plants and ***,operation and maintenance costs caused by membrane pollution limit the wide application of RO *** order to further understand membrane fouling,this study analyzes the influent,effluent,concentrated liquid pollutants and membrane fouling of typical waste incineration plants and landfills in Chongqing,a city in the west of China based on the comparison of three-dimensional excitation and emission matrix fluorescence(3DEEM)and nanometer particle *** addition,this paper discusses the change law of chemical oxygen demand(COD)and main pollutants in membrane fouling in the disc tube reverse osmosis(DTRO)system in a single operation cycle,analyzes the main components of membrane fouling,and draws the accumulation of RO membrane pollutants,in order to provide a reference for understanding the composition,formation and control of membrane fouling.

关键词： reverse osmosis(RO)process leachate treatment properties of membrane fouling fouling formation incineration plant landfill

Assessment of CH_(4) flux and its influencing drivers in the rice-wheat agroecosystem of the Huai River Basin,China

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Journal of Integrative Agriculture 2024年第12期23卷 4203-4215页

作者： xiaolan yu Fangmin Zhang Yanqiu Fang Xiaohan Zhao Kaidi Zhang Yanyu lu Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Jiangsu Key Laboratory of Agricultural Meteorology College of Ecology and Applied MeteorologyNanjing University of Information Science&TechnologyNanjing 210044China Anhui Institute of Meteorological Sciences/Anhui Province Key Laboratory of Atmospheric Science and Satellite Remote Sensing Hefei 230031China Shouxian National Climatology Observatory Huai River Basin Typical Farm Eco-Meteorological Experiment Field of China Meteorological AdministrationShouxian 232200China

To understand the CH_(4) flux variations and their climatic drivers in the rice-wheat agroecosystem in the Huai River Basin of China,the CH_(4) flux was observed by using open-path eddy covariance at a typical rice-wheat rotation system in Anhui Province,China from November 2019 to October *** variations and their drivers were then analyzed with the Akaike information criterion ***_(4) flux showed distinct diurnal variations with single peaks during 9:00-13:00 local *** highest peak was 2.15μg m^(-2)s^(-1)which occurred at 11:00 in the vegetative growth stage in the rice growing season(RGS).CH_(4) flux also showed significant seasonal *** average CH_(4)flux in the vegetative growth stage in the RGS(193.8±74.2 mg m^(-2)d^(-1))was the highest among all growth *** annual total CH_(4) flux in the non-rice growing season(3.2 g m^(-2))was relatively small compared to that in the RGS(23.9 g m^(-2)).CH_(4) flux increased significantly with increase in air temperature,soil temperature,and soil water content in both the RGS and the non-RGS,while it decreased significantly with increase in vapor pressure deficit in the *** study provided a comprehensive understanding of the CH_(4) flux and its drivers in the rice-wheat rotation agroecosystem in the Huai River Basin of *** addition,our findings will be helpful for the validation and adjustment of the CH_(4) models in this region.

关键词： CH_(4) flux eddy covariance method rice-wheat rotation agroecosystem Huai River Basin

Energy-efficient Medium Access Approach for Wireless Body Area Network Based on Body Posture

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China Communications 2015年第12期12卷 122-132页

作者： WANG Feng HU Fengye WANG lu DU yu LIU xiaolan GUO Gang College of Communication Engineering Jilin University Flight Vehicle Control Department Air Force Aviation University

Energy efficiency has become one of the most important issues in wireless body area network(WBAN).In this paper,an energy-efficient medium access control(MAC)protocol for WBAN is proposed based on human body posture under walking *** to person's movements,WBAN is a dynamic network,which means that traditional static protocols are no more suitable for *** solving this problem,firstly,the feature of human walking at a constant speed is analyzed and we divide a spell of movements into a sequence of key frames just like a video constituted by numbers of continuous *** a result,the dynamic walking process is translated into several static postures,which the static MAC protocol could be used ***,concerning the performance of network lifetime,we design a posture-aware approach for lifetime maximization(PA-DPLM).With analytical and simulation results provided,we demonstrate that PA-DPLM protocol is energy-efficient and can be used under constant speed walking scenery.

关键词： Medium lifetime aware frames maximization walking transmit topology gains beacon

Visible-light-promoted oxidative decarboxylation of arylacetic acids in air:Metal-free synthesis of aldehydes and ketones at room temperature

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Chinese Chemical Letters 2020年第7期31卷 1863-1867页

作者： Shuaiqi He xiaolan Chen Fanlin Zeng Peipei lu yuyu Peng Lingbo Qu Bing yu College of Chemistry Zhengzhou UniversityZhengzhou 450001 China Henan Nonferrous Metals Geological Exploration Institute Zhengzhou 450052China Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation Changsha University of Science and TechnologyChangsha 410114China

A metal-free photocatalytic oxidative decarboxylation reaction at room temperature was developed for the synthesis of aromatic aldehydes and ketones from the corresponding arylacetic *** reaction was realized under blue-light irradiation by adding 1 mol%of 4 CzIPN as photocatalyst and air as *** reaction represents a novel decarboxylation of a sp^3-hybridized carboxylic acids without traditional heating,additional oxidants,and metal reagents under mild conditions.

关键词： Decarboxylation Metal-free Photocatalysis 4CzIPN Arylacetic acids

黄芩素通过抑制ERK通路下调HeLa细胞中基质金属蛋白酶的表达

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细胞与分子免疫学杂志 2014年第8期30卷 798-801页

作者：喻小兰卢科莲夏纪毅毛熙光泸州医学院泸州市龙马潭区妇幼保健院四川泸州646000 泸州市妇幼保健院泸州医学院药物与功能性食品研究中心泸州医学院附属医院妇产科

目的观察不同浓度黄芩素处理宫颈癌细胞后,细胞外信号调节激酶1/2(ERK1/2)与基质金属蛋白酶2(MMP-2)、MMP-9 mRNA及蛋白水平表达的变化。方法体外培养HeLa细胞株,分为空白对照组、100μmol/L、200μmol/L黄芩素处理组,培养24 h。明胶酶... 详细信息

目的观察不同浓度黄芩素处理宫颈癌细胞后,细胞外信号调节激酶1/2(ERK1/2)与基质金属蛋白酶2(MMP-2)、MMP-9 mRNA及蛋白水平表达的变化。方法体外培养HeLa细胞株,分为空白对照组、100μmol/L、200μmol/L黄芩素处理组,培养24 h。明胶酶谱法检测上清液中MMP-2、MMP-9的活性变化。反转录PCR法检测ERK1/2及MMP-2、MMP-9的mRNA水平的表达变化。Western blot法检测ERK1/2、p-ERK1/2及MMP-2、MMP-9的蛋白水平的表达变化。结果黄芩素处理24 h后,与空白对照组相比较,MMP-2、MMP-9的活性变化逐渐降低,且呈浓度依赖性(P<0.05)。ERK1/2、p-ERK1/2、MMP-2、MMP-9的mRNA及蛋白表达随着黄芩素浓度的增强逐渐降低(P<0.05)。结论黄芩素通过激活ERK1/2信号通路下调MMP-2、MMP-9的表达。

关键词：黄芩素宫颈癌细胞 MMP-2 MMP-9 细胞外信号调节激酶1 2

Design of single-phased magnesium alloys with typically high solubility rare earth elements for biomedical applications:Concept and proof

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Bioactive Materials 2023年第4期22卷 180-200页

作者： Dong Bian Xiao Chu Jin Xiao Zhipei Tong He Huang Qinggong Jia Jianing Liu Wenting Li Hui yu yue He Limin Ma xiaolan Wang Mei Li Tao Yang Wenhan Huang Chi Zhang Mengyu Yao yu Zhang Zhigang Xu Shaokang Guan yufeng Zheng Medical Research Center Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou510080China Department of Orthopedics Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou510080China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou450001China Academy for Advanced Interdisciplinary Studies Peking UniversityBeijing100871China School of Materials Science and Engineering Peking UniversityBeijing100871China ERC for Revolutionizing Metallic Biomaterials North Carolina A&T State UniversityGreensboroNC27411USA

Rare earth elements(REEs)have been long applied in magnesium alloys,among which the mischmetal-containing WE43 alloy has already got the CE mark approval for clinical application.A considerable amount of REEs(7 wt%)is needed in that multi-phased alloy to achieve a good combination of mechanical strength and corrosion ***,the high complex RE addition accompanied with multiple second phases may bring the concern of biological ***-phased Mg-RE alloys with simpler compositions were proposed to improve the overall performance,i.e.,“Simpler alloy,better performance”.The single-phased microstructure can be successfully obtained with typical high-solubility REEs(Ho,Er or lu)through traditional smelting,casting and extrusion in a wide compositional range.A good corrosion resistance with a macroscopically uniform corrosion mode was guaranteed by the homogeneously single-phased *** bimodal-grained structure with plenty of sub-grain microstructures allow us to minimize the RE addition to<1 wt%,without losing mechanical *** single-phased Mg-RE alloys show comparable mechanical properties to the clinically-proven Mg-based *** exhibited similar in-vitro and in-vivo performances(without local or systematic toxicity in SD-rats)compared to a high purity *** addition,metal elements in our single-phased alloys can be gradually excreted through the urinary system and digestive system,showing no consistent accumulation of RE in main organs,i.e.,less burden on *** novel concept in this study focuses on the simplification of Mg-RE based alloys for biomedical purpose,and other biodegradable metals with single-phased microstructures are expected to be explored.

关键词： Biodegradable magnesium Rare earth Bimodal grain structure Mechanical property Corrosion resistance

测墒补灌条件下不同穗型小麦耗水特性和同化物积累与分配研究

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麦类作物学报 2019年第12期39卷 1486-1493页

作者：卢小兰于振文张永丽石玉山东农业大学农业部作物生理生态与栽培重点开放实验室

为了解测墒补灌对小麦水分利用和干物质积累与分配的影响及与品种类型的关系,在田间条件下,以中穗型品种青农2号和济麦22、大穗型品种山农23和山农30为材料,设置小麦全生育期不灌水(W0)、节水灌溉(W1)和充分灌溉(W2)3个水分处理(W1处理... 详细信息

为了解测墒补灌对小麦水分利用和干物质积累与分配的影响及与品种类型的关系,在田间条件下,以中穗型品种青农2号和济麦22、大穗型品种山农23和山农30为材料,设置小麦全生育期不灌水(W0)、节水灌溉(W1)和充分灌溉(W2)3个水分处理(W1处理拔节期和开花期0~40 cm土层土壤相对含水量分别补灌至65%和70%,W2分别补灌至85%和90%),研究了不同土壤水分下两种穗型小麦耗水特性和同化物积累与分配。结果表明,两种穗型小麦的W1处理灌水量及其占总耗水量的比例显著低于W2处理;60~140 cm土层土壤贮水消耗量显著低于W0处理,高于W2处理。W1处理开花前营养器官贮藏干物质在开花后向籽粒的转运量和对籽粒产量的贡献率均低于W0处理,而开花后干物质对籽粒产量的贡献率及成熟期干物质在籽粒中的分配量和分配比例均高于W0处理,W2处理的上述指标与W1处理均无显著差异。两种穗型小麦W1处理的籽粒产量高于W0处理,与W2处理无差异;W1处理水分利用效率和灌水利用效率高于W2处理。W1处理下两中穗型品种灌水量及其占总耗水量的比例和土壤贮水消耗量及其占总耗水量的比例的平均值分别比两大穗品种的平均值低4.95%、2.77%、7.15%和3.54%;两个中穗型品种开花前营养器官贮藏干物质向籽粒的转运量和贡献率比两个大穗型品种平均值分别高61.68%和70.33%,开花后干物质向籽粒的转运量、贡献率和成熟期干物质在籽粒中的分配量的平均值比两大穗型品种的平均值分别低13.88%、9.97%和18.08%。

关键词：不同穗型小麦测墒补灌耗水特性同化物积累与分配

Epidemiological,Clinical and Serological Characteristics of Children with Coronavirus Disease 2019 in Wuhan:A Single-centered,Retrospective Study

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Virologica Sinica 2020年第6期35卷 861-867页

作者： Dan luo Zhi Xia Heng Li Danna Tu Ting Wang Wei Zhang lu Peng Wenfu Yi Sai Zhang Junhua Shu Hui Xu Yong Li Buyun Shi Chengjiao Huang Wen Tang Shuna Xiao xiaolan Shu Yan Liu yuan Zhang Shan Guo Zhi yu Baoxiang Wang yuan Gao Qinxue Hu Hanzhong Wang Xiaohui Song Hong Mei Xiaoqin Zhou Zhenhua Zheng CAS Key Laboratory of Special Pathogens and Biosafety Center for Emerging Infectious DiseasesWuhan Institute of VirologyChinese Academy of SciencesWuhan 430071China Department of Gastroenterology Wuhan Children’s HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430015China Department of Pediatrics Women and Children’s Hospital of Hubei ProvinceTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430070China State Key Laboratory of Virology Wuhan Institute of VirologyChinese Academy of SciencesWuhan 430071China Department of Obstetrics Wuhan Maternal and Child Healthcare HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430015China

Dear Editor,In December 2019,SARS-Co V-2 was first detected in the samples obtained from three adult patients who suffered from an unknown viral pneumonia in Wuhan(Li et al.2020).This unknown viral pneumonia is furthe... 详细信息

关键词： al. Clinical Wuhan

广东省食品中的氯丙醇酯水平及其人体暴露评估

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环境科学学报 2018年第7期38卷 2941-2947页

作者：姜子岸吕芬张晓岚龙朝阳余应新上海大学环境与化学工程学院环境污染与健康研究所上海200444 广东省疾病预防控制中心卫生化验所广州511430

氯丙醇酯是氯丙醇与脂肪酸反应的一类污染物,该文旨在通过评估食品中的此类污染物对不同人群进行暴露风险评估.在广东省的3个地区采集了包括油条、方便面饼和麻花在内的食品样品,用GC-MS测定了4种氯丙醇酯类化合物,其中主要为2-MCPD酯和... 详细信息

氯丙醇酯是氯丙醇与脂肪酸反应的一类污染物,该文旨在通过评估食品中的此类污染物对不同人群进行暴露风险评估.在广东省的3个地区采集了包括油条、方便面饼和麻花在内的食品样品,用GC-MS测定了4种氯丙醇酯类化合物,其中主要为2-MCPD酯和3-MCPD酯.氯丙醇酯浓度最高的为麻花,其次为方便面饼和油条.样品中3-MCPD酯和2-MCPD酯的浓度范围分别为n.d.~0.49 mg·kg^(-1)和n.d.~0.64 mg·kg^(-1).不同样品中2-MCPD酯的浓度均大于3-MCPD酯.对各个年龄的人群暴露评估的结果表明,3~9岁儿童的3-MCPD酯的暴露大于耐受量(TDI)0.8μg·kg-1·d-1,青年与成年组均小于每日最大耐受量(PMTDI)2μg·kg-1·d-1.本研究中的食品样本,对于儿童的暴露均存在健康风险,所以应该减少对油炸食品的摄入量以降低氯丙醇酯对儿童造成的健康风险.

关键词： 3-MCPD酯 2-MCPD酯暴露评估暴露风险