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Biodegradation of 2-ethylhexyl-4-methoxycinnamate in river sediments and its impact on microbial communities

Journal of Environmental Sciences 2021年第6期33卷 307-316页

作者： Peng Zhang Guanghua Lu jianchao liu Zhenhua Yan Huike Dong Ranran Zhou Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education College of EnvironmentHohai UniversityNanjing 210098China College of Hydraulic and Civil Engineering XiZang Agriculture and Animal Husbandry CollegeLinzhi 860000China

Numerous studies have evaluated the toxicity and endocrine disrupting properties of organic UV filters for aquatic organisms,but little is known about their biodegradation in river sediments and their impact on *** have set up the sterile and microbiological systems in the laboratory,adding 2-ethylhexyl-4-methoxycinnamate(EHMC),one of organic UV filters included in the list of high yield chemicals,at concentrations of 2,20 and 200μg/L,and characterized the microbial community composition and diversity in *** of EHMC degradation within 30 days revealed that the half-life in the microbial system(3.49 days)was much shorter than that in the sterile system(7.55 days).Two potential degradation products,4-mercaptobenzoic acid and 3-methoxyphenol were identified in the microbial ***,high-throughput 16s and 18s rRNA gene sequencing showed that Proteobacteria dominated the sediment bacterial assemblages followed by Chloroflexi,Acidobacteria,Bacteroidetes and Nitrospirae;Eukaryota_uncultured fungus dominated the sediment fungal *** analysis demonstrated that two bacterium genera(Anaerolineaceae_uncultured and Burkholderiaceae_uncultured)were significantly correlated with the biodegradation of *** results illustrate the biodegradability of EHMC in river sediments and its potential impact on microbial communities,which can provide useful information for eliminating the pollution of organic UV filters in natural river systems and assessing their potential ecological risks.

关键词： 2-ethylhexyl-4-methoxycinnamate(EHMC) River sediment Microbial community composition Degradation

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Robust Segmentation Method for Noisy Images Based on an Unsupervised Denosing Filter

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Tsinghua Science and Technology 2021年第5期26卷 736-748页

作者： Ling Zhang jianchao liu Fangxing Shang Gang Li Juming Zhao Yueqin Zhang College of Software Taiyuan University of TechnologyTaiyuan 030024China College of Information and Computer Taiyuan University of TechnologyTaiyuan 030024China Information Technology Department Shanxi Tizones Technology Co.LtdTaiyuan 030024China

Level-set-based image segmentation has been widely used in unsupervised segmentation *** have recently alleviated the influence of image noise on segmentation results by introducing global or local statistics into existing *** existing methods are based on the assumption that the distribution of image noise is known or ***,real-time images do not meet this *** bridge this gap,we propose a novel level-set-based segmentation method with an unsupervised denoising ***,a denoising filter is acquired under the unsupervised learning ***,the denoising filter is integrated into the level-set framework to separate noise from the noisy image ***,the level-set energy function is minimized to acquire segmentation *** experiments demonstrate the robustness and effectiveness of the proposed method when applied to noisy images.

关键词： image segmentation noisy image level set autoencoder

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A Novel Ultra Short-Term Load Forecasting Method for Regional Electric Vehicle Charging Load Using Charging Pile Usage Degree

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Energy Engineering 2023年第5期120卷 1107-1132页

作者： Jinrui Tang Ganheng Ge jianchao liu Honghui Yang School of Automation Wuhan University of TechnologyWuhan430070China

Electric vehicle(EV)charging load is greatly affected by many traffic factors,such as road *** ultra short-term load forecasting(STLF)results for regional EV charging load are important to the scheduling plan of regional charging load,which can be derived to realize the optimal vehicle to grid *** this paper,a regional-level EV ultra STLF method is proposed and *** usage degree of all charging piles is firstly defined by us based on the usage frequency of charging piles,and then constructed by our collected EV charging transactiondata in ***,these usagedegrees are combinedwithhistorical charging loadvalues toform the inputmatrix for the deep learning based load ***,long short-termmemory(LSTM)neural network is used to construct EV charging load forecastingmodel,which is trained by the formed *** comparison experiment proves that the proposed method in this paper has higher prediction accuracy compared with *** addition,load characteristic index for the fluctuation of adjacent day load and adjacent week load are proposed by us,and these fluctuation factors are used to assess the prediction accuracy of the EV charging load,together with the mean absolute percentage error(MAPE).

关键词： Electric vehicle charging load density-based spatial clustering of application with noise long-short termmemory load forecasting

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Testing final closure time of the Paleo-Asian Ocean along the Solonker suture by a transition of compressional and extensional setting

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Geoscience Frontiers 2020年第6期11卷 1935-1951页

作者： Haidong Zhang jianchao liu Jinkun Yang Jiakun Ge Jinya Wang Zhen Li The School of Earth Science and Resources Chang’an UniversityXi’an 710054China Department of Geology Northwest UniversityXi’an 710069China Laboratory of Mineralization and Dynamics Chang’an UniversityXi’an 710054China Anhui Branch of China National Geological Exploration Center of Building Material Industry Hefei 230022China

The giant Central Asian Orogenic Belt is an extensive accretionary orogen,of which the Solonker suture,as a major regional suture,coincides closely with an early Permian paleobiogeographical *** suture is considered to mark the location of the final closure of the Paleo-Asian Ocean between the North China Craton and the Mongolian *** the closure time of the Paleo-Asian Ocean along the Solonker suture has generally been regarded as Late Permian-Early Triassic,uncertainty remains because of a lack of typical collisionrelated features(e.g.,high-grade regional metamorphism and well-developed fold-thrust structures)and a scarcity of *** present study reports Early Permian foliated gabbros and dikes(288-275 Ma)and Middle-Late Permian undeformed layered gabbros,strongly peraluminous granites,and I-type granites(265-254 Ma)in the Xinhure area along the northern margin of the North China *** Early Permian foliated intrusions have a subduction-related geochemical signature and were derived from partial melting of lithospheric mantle modified by subduction-related melts or fluids at the active margin of the North China *** contrast,the Late Permian undeformed layered gabbros and strongly peraluminous granites were derived from partial melting of lithospheric mantle and middle-upper crust,respectively,triggered by asthenospheric ***,a transition from an end-compressional to an extensional environment according to a transition from collision termination to postcollision of the North China Craton and Mongolian Terrane may have occurred between 275 Ma and 262 *** time span can be considered as the final closure time of the Paleo-Asian Ocean along the Solonker suture.

关键词： Central Asian orogenic belt Solonker suture Layered gabbro Strongly peraluminous granite Paleo-Asian ocean closure time

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An intraoperative lumbar neurological force monitoring system with high-density flexible pressure sensor array

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High Technology Letters 2020年第4期26卷 435-441页

作者： Zhang Qi Zhang Xu Li Caili liu jianchao liu Ming Yuan Fang Chen Hongda State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China Academy of Advanced Semiconductors and Intelligence Technologies Haining 314400P.R.China

In the surgery of lumbar disc herniation(LDH),the nerve root retractor is used to pull the nerve root to prevent *** traditional medical nerve root retractor cannot quantify the force on the nerve *** order to improve the nerve root retractor,this paper proposes an intraoperative lumbar neurological force monitoring *** core module of this system is the improved nerve root retractor equipped with the high density flexible pressure sensor *** high density microneedle array and multiple pressure detection units are used in the pressure sensor to realise sensitive pressure monitoring in a narrow surgical operation *** sensing area is 4 mm×17 mm,including 6 detection *** sensitivity of sensor is 67.30%/N in the range of 0-5 *** system is used for in vitro animal experiments,which can continuously detect pressure.

关键词： nerve root retractor flexible sensor force monitoring lumbar disc herniation(LDH)surgery

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Geochronology and mineralogy of the Weishan carbonatite in Shandong province, eastern China

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Geoscience Frontiers 2019年第2期10卷 769-785页

作者： Chen Wang jianchao liu Haidong Zhang Xinzhu Zhang Deming Zhang Zhixuan Xi Zijie Wang School of Earth Science and Resources Chang'an University Department of Geology Northwest University Weishan mining (Group) Co.Ltd. Shandong Provincial 4th Exploration Institute of Geology and Mineral Resources

The Weishan REE deposit is located at the eastern part of North China Craton(NCC), western Shandong Province. The REE-bearing carbonatite occur as veins associated with aegirine syenite. LA-ICP-MS bastnaesite Th-Pb ages(129 Ma) of the Weishan carbonatite show that the carbonatite formed contemporary with the aegirine syenite. Based on the petrographic and geochemical characteristics of calcite, the REEbearing carbonatite mainly consists of Generation-1 igneous calcite(G-1 calcite) with a small amount of Generation-2 hydrothermal calcite(G-2 calcite). Furthermore, the Weishan apatite is characterized by high Sr, LREE and low Y contents, and the carbonatite is rich in Sr, Ba and LREE contents. The δ^(13)Cv-PDB(-6.5‰ to -7.9‰) and δ^(13)OV-SMOW(8.48‰-9.67‰) values are similar to those of primary, mantlederived carbonatites. The above research supports that the carbonatite of the Weishan REE deposit is igneous carbonatite. Besides, the high Sr/Y, Th/U, Sr and Ba of the apatite indicate that the magma source of the Weishan REE deposit was enriched lithospheric mantle, which have suffered the fluid metasomatism. Taken together with the Mesozoic tectono-magmatic activities, the NW and NWW subduction of Izanagi plate along with lithosphere delamination and thinning of the North China plate support the formation of the Weishan REE deposit. Accordingly, the mineralization model of the Weishan REE deposit was concluded: The spatial-temporal relationships coupled with rare and trace element characteristics for both carbonatite and syenite suggest that the carbonatite melt was separated from the CO_2-rich silicate melt by liquid immiscibility. The G-1 calcites were crystallized from the carbonatite melt, which made the residual melt rich in rare earth elements. Due to the common origin of G-1 and G-2 calcites, the REE-rich magmatic hydrothermal was subsequently separated from the melt. After that, large numbers of rare earth minerals were produced from the magmatic hydrothermal

关键词： Weishan REE deposit Carbonatite Calcite Apatite Deposit model

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Implementing the Global Civilizations Initiative and Promoting the Progress of Human Civilizations

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Qiu Shi 2023年第3期15卷 37-44页

作者： liu jianchao International Department of the CPC Central Committee

Clountries around the world facecommon challenges in pursuing peace and development and exploring a path to *** louder calls than ever for unity,cooperation,and dialogue,mistrust,division,and rivalry still hinder inte... 详细信息

关键词： peace hinder connectivity

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QTL mapping and transcriptome analysis identify candidate genes influencing water–nitrogen interaction in maize

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The Crop Journal 2023年第6期11卷 1872-1883页

作者： Kunhui He Yakun Zhang Wei Ren Pengyun Chen jianchao liu Guohua Mi Fanjun Chen Qingchun Pan State Key Laboratory of Nutrient Use and Management College of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193China College of Agronomy Northwest A&F UniversityYangling 712100ShaanxiChina Sanya Institute of China Agricultural University Sanya 572000HainanChina

Water and nitrogen fertilization are the key factors limiting maize *** genetic basis of interactions between maize genotype,water,and nitrogen is unclear.A recombinant inbred line(RIL)maize population was evaluated for seven yield and five agronomic traits under four water and nitrogen conditions:water stress and low nitrogen,water stress and high nitrogen,well-watered and low nitrogen,and well-watered and high *** eight,six,and six traits varied in response to genotype–water interactions,genotype–nitrogen interactions,and genotype–water–nitrogen *** a linkage map consisting of 896 single-nucleotide polymorphism markers and multipleenvironmental quantitative-trait locus(QTL)mapping,we identified 31 QTL,including 12 for genotype–water–nitrogen interaction,across the four treatments.A set of 8060 genes were differentially expressed among *** genetic analysis,gene co-expression,and functional annotation revealed two candidate genes controlling genotype–water–nitrogen interactions,affecting both leaf width and grain *** involved in abscisic acid biosynthesis and bZIP,NAC,and WRKY transcription factors participated in maize response to water and nitrogen *** results represent a step toward understanding the genetic regulatory network of maize that responds to water and nitrogen stress and provide a theoretical basis for the genetic improvement of both water-and nitrogen-use efficiency.

关键词： Quantitative trait loci Water Nitrogen Interaction Maize

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The Fusion Model of Catalytic Combustion and Thermal Conductivity

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Computers, Materials & Continua 2023年第1期74卷 1509-1521页

作者： Bin Lin Zhengyu Li Dong Wen jianchao liu Shan Yang Yong Zhou Chao Lu Qian Qiu Sichuan Normal University Chengdu610066China School of Computer Science Southwest Petroleum UniversityChengdu610500China Jackson State University Jackson39217MSUSA Key Laboratory on Aero-Engine Altitude Simulation Technology Sichuan Gas Turbine EstablishmentAECCMianyang621000China School of Power and Energy Northwestern Polytechnical UniversityXi’an710072China

The further development of catalytic elements has been plagued by activation and binary *** automatic shift model that has emerged in recent years helps components achieve full ***,the detection data still remains unstable in the shift area(7%∼13%).This paper proposes a Catalytic Combustion and Thermal Conductivity(CCTC)model for the specified range,which can be explained fromtwo aspects based on the existing *** the one hand,it uses iterative location search to process heterogeneous data,judges the prediction position of data points,and then givesweight *** the other hand,it corrects the abnormal points,determines the abnormal points in the horizontal direction,and gives the replacement value through the data of adjacent *** experimental results show that the CCTC model reduces the sum of variance from 17 of the automatic shift model to 13,and the comparison of experimental variance is reduced by 23%.In the full-scale real-time data,the experimental variance of CCTC model and automatic shift model is reduced by 18%.In conclusion,CCTC is a cross section stability framework for full-scale methane measurement,in which the specified heterogeneous combination and anomaly point correction methods improve the stability.

关键词： Catalytic combustion thermal conductivity activation problem binary problem data fusion

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The Master of Tea

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China Today 2024年第6期73卷 78-79页

作者： liu jianchao 不详

His second method is more direct:“Come to my house,let’s have tea.”With this method,you are destined to follow *** to say,Cha Ye’s great prestige and seniority on Old Street makes you feel it is a great privilege if he asks you to *** was a sultry day in *** Cha Ye strolled down the street,he noticed a *** was ***,boss of the Heshengzhai Antique *** Ye walked into the antique shop,where he saw Hu holding onto a strong man’s arm,not letting him go.

关键词： noise. method walk

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