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A COMPARATIVE ANALYSIS OF ATMOSPHERIC AND OCEANIC CONDITIONS BEFORE THE OCCURRENCE OF TWO TYPES OF EL NINO EVENTS

Journal of Tropical Meteorology 2019年第1期25卷 34-44页

作者： ZHI Xie-fei YANG Hua XU Shu-wen WANG Xiao-chun PAN Meng-ting Collaborative Innovation Center on Forecast and evaluation of Meteorological Disasters Nanjing University of Information Science and Technology (NUIST) Nanjing Joint Center for Atmospheric Research Nantong Marine Environmental monitoring Center School of Marine Science NUIST Jiangsu Engineering Technology Research Center of Marine Environment Detection NUIST

The atmospheric and oceanic conditions before the onset of EP El Ni?o and CP El Ni?o in nearly 30 years are compared and analyzed by using 850 hPa wind, 20℃ isotherm depth, sea surface temperature and the Wheeler and Hendon index. The results are as follows: In the western equatorial Pacific, the occurrence of the anomalously strong westerly winds of the EP El Ni?o is earlier than that of the CP El Ni?o. Its intensity is far stronger than that of the CP El Ni?o. Two months before the El Ni?o, the anomaly westerly winds of the EP El Ni?o have extended to the eastern Pacific region, while the westerly wind anomaly of the CP El Ni?o can only extend to the west of the dateline three months before the El Ni?o and later stay there. Unlike the EP El Ni?o, the CP El Ni?o is always associated with easterly wind anomaly in the eastern equatorial Pacific before its onset. The thermocline depth anomaly of the EP El Ni?o can significantly move eastward and deepen. In addition, we also find that the evolution of thermocline is ahead of the development of the sea surface temperature for the EP El Ni?o. The strong MJO activity of the EP El Ni?o in the western and central Pacific is earlier than that of the CP El Ni?o. Measured by the standard deviation of the zonal wind square, the intensity of MJO activity of the EP El Ni?o is significantly greater than that of the CP El Ni?o before the onset of El Ni?o.

关键词： EP El Nino CP El Nino equatorial zonal wind thermocline MJO

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Detection of 36 antibiotics in coastal waters using high performance liquid chromatography-tandem mass spectrometry

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Chinese Journal of Oceanology and Limnology 2011年第5期29卷 1093-1102页

作者：那广水顾佳葛林科张蓬王震刘春阳张琳 National Marine Environmental monitoring Center School of Biology Technology Dalian Polytechnic University

Among pharmaceuticals and personal care products released into the aquatic environment, antibiotics are of particular concern, because of their ubiquity and health effects. Although scientists have recently paid more attention to the threat of antibiotics to coastal ecosystems, researchers have often focused on relatively few antibiotics, because of the absence of suitable analytical methods. We have therefore developed a method for the rapid detection of 36 antibiotic residues in coastal waters, including tetracyclines （TCs）, sulfanilamides （SAs）, and quinolones （QLs）. The method consists of solid-phase extraction （SPE） and liquid chromatography-tandem mass spectrometry （LC-MS/MS） analysis, using electrospray ionization （ESI） in positive mode. The SPE was performed with Oasis HLB and Oasis MCX cartridges. Chromatographic separation on a Cr8 column was achieved using a binary eluent containing methanol and water with 0.1% formic acid. Typical recoveries of the analytes ranged from 67.4% to 109.3% at a fortification level of 100 ng/L. The precision of the method, calculated as relative standard deviation （RSD）, was below 14.6% for all the compounds. The limits of detection （LODs） varied from 0.45 pg to 7.97 pg. The method was applied to detemaine the target analytes in coastal waters of the Yellow Sea in Liaoning, China. Among the tested antibiotics, 31 were found in coastal ＇waters, with their concentrations between the LOD and 212.5 ng/L. These data indicate that this method is valid for analysis of antibiotics in coastal waters. The study first reports such a large number of antibiotics along the Yellow Sea coast of Liaoning, and should facilitate future comprehensive evaluation of antibiotics in coastal ecosystems

关键词： antibiotics high performance liquid chromatography-tandem mass spectrometry solid-phaseextraction coastal waters

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Problems and Suggestions for Domestic Non-special Use Cosmetics Record Filing in China

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China Detergent & Cosmetics 2016年第2期1卷 43-47页

作者： Chunli Hu Li Wang Yanan Li Liaoning Center for Drug and Device evaluation and monitoring China Dandong City Drug Inspection Test Center China

By summarizing the regulatory, technical requirements and problems of domestic non-special use cosmetics in China, reasonable suggestions were put forward for domestic non-special use cosmetics supervision. The problems encountered in the process of technical review were summarized from 5 aspects by studying on the record information from 2014： the regulatory requirements, record range, record information, label content, and the provincial review standards. The results showed that, due to the regulations issued early and the sectioned management, the domestic non-special use cosmetics was lack of authority and continuity supervision, existed problems such as the variety declaring was beyond the filling range, the information applied was incomplete, the sales package pictures uploaded were not suitable, and the review standards of different provinces were inconsistent. At last, some suggestions were proposed.

关键词： domestic non-special use cosmetics record

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GeoNER:Geological Named Entity Recognition with Enriched Domain Pre-Training Model and Adversarial Training

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Acta Geologica Sinica(English Edition) 2024年第5期98卷 1404-1417页

作者： MA Kai HU Xinxin TIAN Miao TAN Yongjian ZHENG Shuai TAO Liufeng QIU Qinjun Hubei Key Laboratory of Intelligent Vision Based monitoring for Hydroelectric Engineering China Three Gorges UniversityYichangHubei 443002China College of Computer and Information Technology China Three Gorges UniversityYichangHubei 443002China Key Laboratory of Geological Survey and evaluation of Ministry of Education China University of GeosciencesWuhan 430074China School of Computer Science China University of GeosciencesWuhan 430074China Key Laboratory of Quantitative Resource evaluation and Information Engineering Ministry of Natural ResourcesChina University of GeosciencesWuhan 430074China

As important geological data,a geological report contains rich expert and geological knowledge,but the challenge facing current research into geological knowledge extraction and mining is how to render accurate understanding of geological reports guided by domain *** generic named entity recognition models/tools can be utilized for the processing of geoscience reports/documents,their effectiveness is hampered by a dearth of domain-specific knowledge,which in turn leads to a pronounced decline in recognition *** study summarizes six types of typical geological entities,with reference to the ontological system of geological domains and builds a high quality corpus for the task of geological named entity recognition(GNER).In addition,Geo Wo BERT-adv BGP(Geological Word-base BERTadversarial training Bi-directional Long Short-Term Memory Global Pointer)is proposed to address the issues of ambiguity,diversity and nested entities for the geological *** model first uses the fine-tuned word granularitybased pre-training model Geo Wo BERT(Geological Word-base BERT)and combines the text features that are extracted using the Bi LSTM(Bi-directional Long Short-Term Memory),followed by an adversarial training algorithm to improve the robustness of the model and enhance its resistance to interference,the decoding finally being performed using a global association pointer *** experimental results show that the proposed model for the constructed dataset achieves high performance and is capable of mining the rich geological information.

关键词： geological named entity recognition geological report adversarial training confrontation training global pointer pre-training model

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Time effects of rice straw and engineered bacteria on reduction of exogenous Cu mobility in three typical Chinese soils

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Pedosphere 2022年第5期32卷 665-672页

作者： Hanzhi SHI Dian WEN Yongdong HUANG Shoujun XU Tenghaobo DENG Furong LI Zhichao WU Xu WANG Peihua ZHAO Fuhua WANG Ruiying DU Institute of Quality Standard and monitoring Technology for Agro-Products Guangdong Academy of Agricultural SciencesGuangzhou 510640(China) Key Laboratory of Testing and evaluation for Agro-Product Safety and Quality Ministry of Agriculture and Rural AffairsGuangzhou 510640(China) Guangdong Provincial Key Laboratory of Quality&Safety Risk Assessment for Agro-Products Guangzhou 510640(China)

Globally,copper(Cu)accumulation in soils is a major environmental *** organic waste and some bacterial species can readily absorb metals in an eco-friendly manner,and thus are commonly used in metal-contaminated soil *** study investigates the change in Cu fractions during the aging process and the time effects of rice straw(RS)and engineered bacteria(EB)(Pseudomonas putida X4/pIME)on reduction of Cu *** typical Chinese soils(red,cinnamon,and black soils)were incubated with RS or RS+EB in the presence of exogenous Cu for 24 *** soil physicochemical properties,reactive soil components,Cu fractions,and Cu mobility were determined over *** Cu mobility factor(MF)values were the lowest in the black soil(6.4-9.2)because of its high organic carbon and clay *** additions of both RS and RS+EB accelerated Cu stabilization during the aging process in all three *** Cu MF values decreased with time during the initial 20 months;however,the MF values increased thereafter in all soils,which might be due to the reduction of humic substances and amorphous iron oxides and the increase in iron oxides complexed on the organic *** reduction rates of Cu MF were similar after 16,24,and more than 24 months in the red,cinnamon,and black soils,respectively,indicating that RS and RS+EB could limit Cu mobility at different times in various *** RS treatment showed the greatest efficiency in reducing Cu mobility in the red,cinnamon,and black soils after 12,12,and 8 months of incubation,*** RS+EB treatment was more efficient than the RS treatment in the red soil during the initial 8 months of the incubation *** study provides theoretical support for Cu risk assessments and RS supplementation for Cu remediation in different soils.

关键词： aging Cu distribution mobility factor sequential extraction soil incubation

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Decreased soil pH weakens the positive rhizosphere effect on denitrification capacity

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Pedosphere 2024年第5期34卷 905-915页

作者： Jun WANG Zongxiang ZHANG Fei LIANG Zhao CHE Yongkang WEN Manyu ZHANG Wenjun JIN Zhaorong DONG He SONG College of Agronomy Anhui Agricultural UniversityHefei 230036China Key Laboratory of Arable Land Quality monitoring and evaluation Ministry of Agriculture and Rural AffairsInstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural Sciences(CAAS)Beijing 100081China College of Resources and Environmental Sciences China Agricultural UniversityBeijing 100193China

The stimulating effect of rhizosphere on denitrification is considered to be an unavoidable loss of soil nitrogen(N)and detrimental to crop N use efficiency,which is regulated by crop growth and soil *** acidification,occurring rapidly in many intensive farming lands,affects both crop growth and soil properties,thereby altering rhizosphere effect on ***,the mechanism by which soil acidification regulates rhizosphere denitrification still remains ***,we determined the denitrification capacity(DC)and associated community compositions of nirK-and nirS-type denitrifiers in maize rhizosphere and bulk soils at four acidity gradients(pH=6.8,6.1,5.2,and 4.2).Results showed that the stimulating effect of rhizosphere on DC strongly depended on soil *** to bulk soil,rhizosphere soil had significantly higher DC at pH 5.2,but not at pH of *** increasing soil acidity,the stimulation of rhizosphere on DC(calculated as the difference in DC between rhizosphere and bulk soils)decreased from 8.01 to 0.01 mg N ***,soil acidification significantly reduced the differences in dissolved organic carbon(DOC)and abundance of key nirK-type denitrifier taxa between rhizosphere and bulk soils,both of which were positively related to the stimulation of rhizosphere on *** findings demonstrated that soil acidification could weaken the positive rhizosphere effect on denitrification via regulated C availability and associated nirK-type denitrifier community,potentially reducing N loss risk in rhizosphere *** independent role of soil p H should be fully considered when modelling N behaviour in plant-soil systems.

关键词： bacterial abundance denitrifier community dissolved organic carbon operational taxonomic unit soil acidification

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Significantly influenced photocatalytic performance for H_(2)O_(2)generation over ultrathin g-C_(3)N_(4)through regulating the migration orientation of photogenerated charge carriers

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Chinese Chemical Letters 2021年第11期32卷 3377-3381页

作者： Xinxia He Hongyan Shang Chuan Wang Le Chen Zehan Gong Jun Wang Shilin Zhao Jun Ma College of Chemistry and Materials Science Sichuan Normal UniversityChengdu 610068China Key Laboratory of Land Resources evaluation and monitoring in Southwest Ministry of Education of ChinaChengdu 610066China State Key Laboratory of Environmental-Friendly Energy Materials School of Materials Science and EngineeringSouthwest University of Science and TechnologyMianyang 621010China

H_(2)O_(2)has been widely applied in the fields of chemical synthesis,medical sterilization,pollutant removal,etc.,due to its strong oxidizing property and the avoidable secondary *** of the enhanced performance for H_(2)O_(2)generation over g-C_(3)N_(4)semiconductors through promoting the separation of photo-generated charge carriers,the effect of migration orientation of charge carriers is still *** this emotion,surface modification of g-C_(3)N_(4)was employed to adjust the migration orientation of charge carriers,in order to investigate systematically its effect on the performance of H_(2)O_(2)*** was found that ultrathin g-C_(3)N_(4)(UCN)modified by boron nitride(BN),as an effective hole-attract agent,demonstrated a significantly enhanced ***,for the optimum UCN/BN-40%catalyst,4.0-fold higher yield of H_(2)O_(2)was obtained in comparison with the pristine *** comparison,UCN modified by carbon dust demonstrated a completely opposite *** remarkably improved performance over UCN/BN was ascribed to the fact that more photo-generated electrons were remained inside of triazine structure of g-C_(3)N_(4),leading to the formation of larger amount of 1,*** is anticipated that our work could provide new insights for the design of photocatalyst with significantly improved performance for H_(2)O_(2)generation.

关键词： Ultra-thin g-C_(3)N_(4) Photocatalytic H_(2)O_(2)production Photogenerated charge carriers Migration orientation

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Characterization of the aerosol chemical composition during the COVID-19 lockdown period in Suzhou in the Yangtze River Delta,China

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Journal of Environmental Sciences 2021年第4期33卷 110-122页

作者： Honglei Wang Qing Miao Lijuan Shen Qian Yang Yezheng Wu Heng Wei Yan Yin Tianliang Zhao Bin Zhu Wen Lu Collaborative Innovation Center on Forecast and evaluation of Meteorological Disasters Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological AdministrationNanjing University of Information Science&TechnologyNanjing 210044China Suzhou Environmental monitoring Center Suzhou 215000China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

To control the spread of COVID-19,rigorous restrictions have been implemented in China,resulting in a great reduction in pollutant *** this study,we evaluated the air quality in the Yangtze River Delta during the COVID-19 lockdown period using satellite and ground-based data,including particle matter(PM),trace gases,water-soluble ions(WSIs) and black carbon(BC).We found that the impacts of lockdown policy on air quality cannot be accurately assessed using MODIS aerosol optical depth(AOD) data,whereas the tropospheric nitrogen dioxide(NO_(2)) vertical column density can well reflect the influences of these restrictions on human *** to the pre-COVID period,the PM_(2.5),PM_(10),NO_(2),carbon monoxide(CO),BC and WSIs during the lockdown in Suzhou were observed to decrease by 37.2%,38.3%,64.5%,26.1%,53.3% and 58.6%,respectively,while the sulfur dioxide(SO_(2)) and ozone(O_(3)) increased by 1.5% and 104.7%.The WSIs ranked in the order of NO_(3)~->NH_(4)^(+)>SO_(4)^(2-)>Cl~->Ca^(2+)>K^(+)>Mg^(2+)>Na + during the lockdown *** comparisons with the ion concentrations during the pre-COVID period,we found that the ions NO 3-,NH 4 +,SO_(4)^(2-),Cl~-,Ca^(2+),K^(+) and Na^(+) decreased by 66.3%,48.8%,52.9%,56.9%,57.9% and 76.3%,respectively,during the lockdown,in contrast to Mg^(2+),which increased by 30.2%.The lockdown policy was found to have great impacts on the diurnal variations of Cl~-,SO_(4)^(2-),Na^(+) and Ca^(2+).

关键词： COVID-19 Lockdown Satellite data Chemical composition Diurnal variation

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Research on Hydrodynamic Interference Suppression of Bottom-Mounted monitoring Platform with Fairing Structure

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China Ocean Engineering 2018年第1期32卷 51-61页

作者： WANG Zhen ZHENG Yi MAO Yu-feng WANG Ya-zhou YU Yan-ting LIU Hong-ning Institute of Oceanographic Instrumentation Qilu University of Technology(Shandong Academy of Sciences)Qingdao 266061China Shandong Provincial Key Laboratory of Ocean Environmental monitoring Technology Qingdao 266061China National Engineering and Technological Research Center of Marine monitoring Equipment Qingdao 266061China

In the disturbance of unsteady flow field under the sea, the monitoring accuracy and precision of the bottom-mounted acoustic monitoring platform will decrease. In order to reduce the hydrodynamic interference, the platform wrapped with fairing structure and separated from the retrieval unit is described. The suppression effect evaluation based on the correlation theory of sound pressure and particle velocity for spherical wave in infinite homogeneous medium is proposed and the difference value between them is used to evaluate the hydrodynamic restraining performance of the bottom-mounted platform under far field condition. Through the sea test, it is indicated that the platform with sparse layers fairing structure(there are two layers for the fairing, in which the inside layer is 6-layers sparse metal net, and the outside layer is 1-layer polyester cloth, and then it takes sparse layers for short) has no attenuation in the sound pressure response to the sound source signal, but obvious suppression in the velocity response to the hydrodynamic noise. The effective frequency of the fairing structure is decreased below 10 Hz, and the noise magnitude is reduced by 10 d B. With the comparison of different fairing structures, it is concluded that the tighter fairing structure can enhance the performance of sound transmission and flow restraining.

关键词： bottom-mounted fairing hydrodynamic interference acoustic impedance transmission loss

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Alleviating eutrophication by reducing the abundance of Cyanophyta due to dissolved inorganic carbon fertilization:Insights from Erhai Lake,China

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Journal of Environmental Sciences 2023年第9期131卷 68-83页

作者： Chaowei Lai Zhen Ma Zaihua Liu Hailong Sun Qingchun Yu Fan Xia Xuejun He Qian Bao Yongqiang Han Xing Liu Haibo He State Key Laboratory of Environmental Geochemistry Institute of GeochemistryCASGuiyang 550081China School of Water Resources and Environment China University of Geosciences(Beijing)Beijing 100083China University of Chinese Academy of Sciences Beijing 100049China Hefei University Hefei 230601China Sichuan Normal University Key Laboratory of Land Resources evaluation and monitoring in Southwest China of Ministry of Education Chengdu 610066China

The eutrophication of lakes is a global environmental *** nitrogen(N)and phosphorus(P)on phytoplankton is considered to be the most important basis of lake eutrophication ***,the effects of dissolved inorganic carbon(DIC)on phytoplankton and its role in mitigating lake eutrophication have often been *** this study,the relationships between phytoplankton and DIC concentrations,carbon isotopic composition,nutrients(N and P),and hydrochemistry in the Erhai Lake(a karst lake)were *** results showed that when the dissolved carbon dioxide(CO_(2)(aq))concentrations in the water were higher than 15μmol/L,the productivity of phytoplankton was controlled by the concentrations of TP and TN,especially by that of *** the N and P were sufficient and the CO_(2)(aq)concentrations were lower than 15μmol/L,the phytoplankton productivity was controlled by the concentrations of TP and DIC,especially by that of ***,DIC significantly affected the composition of the phytoplankton community in the lake(p<0.05).When the CO_(2)(aq)concentrations were higher than 15μmol/L,the relative abundance of Bacillariophyta and Chlorophyta was much higher than those of harmful ***,high concentrations of CO_(2)(aq)can inhibit harmful Cyanophyta blooms.

关键词： Dissolved inorganic carbon Nutrients limitation Phytoplankton species composition Eutrophication management Karst lake

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