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FWENet:a deep convolutional neural network for flood water body extraction based on SAR images

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International Journal of Digital Earth 2022年第1期15卷 345-361页

作者： jingming wang Shixin wang Futao wang Yi Zhou Zhenqing wang Jianwan Ji Yibing Xiong Qing Zhao Aerospace Information Research Institute Chinese Academy of SciencesBeijingPeople’s Republic of China University of Chinese Academy of Sciences BeijingPeople’s Republic of China Hainan Research Institute Aerospace Information Research InstituteChinese Academy of SciencesSanyaPeople’s Republic of China School of Geography Science and Geomatics Engineering Suzhou University of Science and TechnologySuzhouPeople’s Republic of China

As one of the most severe natural disasters in the world,floods caused substantial economic losses and casualties every *** and accurate acquisition of flood inundation extent could provide technical support for relevant departments in the field of flood emergency response and disaster *** the accuracy of existing research works extracting flood inundation extent based on Synthetic Aperture Radar(SAR)images and deep learning methods is relatively low,this study utilized Sentinel-1 SAR images as the data source and proposed a novel model named flood water body extraction convolutional neural network(FWENet)for flood information *** three classical semantic segmentation models(UNet,Deeplab v3 and UNet++)and two traditional water body extraction methods(Otsu global thresholding method and Object-Oriented method)were compared with the FWENet ***,this paper analyzed the water body area change situations of Poyang *** main results of this paper were as follows:Compared with other five water body extraction methods,the FWENet model achieved the highest water body extraction accuracy,its F1 score and mean intersection over union(mIoU)were 0.9871 and 0.9808,*** study could guarantee the subsequent research on flood extraction based on SAR images.

关键词： Deep learning flood water body extraction SAR Poyang Lake

Ethylene thiourea exposure induces neurobehavioral toxicity in zebrafish by disrupting axon growth and neuromuscular junctions

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Journal of Environmental Sciences 2024年第3期137卷 108-119页

作者： jingming wang Zhiquan Yu Yongfeng wang Yuanyao Chen Lin Xiao Yanjun Zong Qiyuan Feng Lianqi Peng Huiping Zhang Chunyan Liu Institute of Reproductive Health Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

Ethylene thiourea(ETU)converted from ethylene bisdithiocarbamate(EBDC)fungicides has aroused great concern because of its prevalence and harmful *** ETU-induced neurotoxicity has been reported,the potential mechanisms remain *** study provided insights into its neurotoxic effects at environmentally relevant concentrations in *** findings showed that embryonic exposure to ETU decreased the hatch rate and delayed somite ***,ETU treatment significantly reduced the dark velocity in the locomotion *** upregulated tendency of the mitogen-activated protein kinases(MAPK)pathway(mknk1,atf4,mapkapk3)screened by transcriptome analysis implied motor neuron degeneration,which was validated by subsequent morphological observation,as axon length and branches were truncated in the 62.5μg/L ETU ***,although the rescue experiment with a p38 MAPK inhibitor(SB203580)successfully ameliorated axon degeneration,it failed to reverse the locomotion *** exploration of transcriptome data revealed the varied expression of presynaptic scaffold protein-related genes(pcloa,pclob,bsna),whose downregulation might impair the neuromuscular junction(NMJ).Therefore,we reasonably suspected that ETU-induced neurobehavioral deficits might result from the combined effects of the MAPK pathway and presynaptic *** this,we highlighted the necessity to take precautions and early interventions for susceptible ETU-exposed populations.

关键词： Ethylene thiourea(ETU) Behavior Neuromuscular junction MAPK signaling pathway Piccolo and bassoon Danio rerio

Promoter and coding sequence diversity of CsCCD1 may contribute to the differential accumulation of floralβ-ionone in fresh tea leaves

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Horticultural Plant Journal 2023年第4期9卷 837-847页

作者： jingming wang Mingyue Zhao Ting Gao Yingying Feng Feiquan wang Yuting Pan Jieyang Jin Tingting Jing Mengqian Lu Mengting Zhang Danyang Guo Xiaochun Wan Wilfried Schwab Chuankui Song State Key Laboratory of Tea Plant Biology and Utilization International Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural UniversityHefeiAnhui 230036China Wuyi University WuyishanFujian 354300China Biotechnology of Natural Products Technische Universität MünchenLiesel-Beckmann-Str.1Freising 85354Germany

The carotenoid-derived volatileβ-ionone makes an important contribution to tea ***,we qualitatively and quantitatively analysed 15 carotenoids in tea leaves of 13 cultivars by UHPLC-APCI-MS/*** 13 cultivars were divided into two groups by PCA(Principal Component Analysis)clustering analysis of their carotenoid content,and OPLS-DA(Orthogonal projections to latent structures)indicated that the levels ofβ-carotene(VIP=2.89)and lutein(VIP=2.30)were responsible for much of the variation between the two ***,theβ-carotene toβ-ionone conversion rates in Group 1 were higher than in Group 2,while theβ-carotene content was significantly lower in Group 1 than in Group ***β-ionone content was significantly higher in Group *** Correlation Coefficient calculation between the transcription level of candidate genes(CsCCD1 and CsCCD4)and the accumulation ofβ-ionone indicated that CsCCD1 may involve in the formation ofβ-ionone in 13 *** expression and in vitro enzyme activity assays showed that‘Chuanhuang 1’had an amino acid mutation in carotenoid cleavage dioxygenases 1(CsCCD1)compared with‘Shuchazao’,resulting in a significantly higherβ-ionone content in‘Chuanhuang 1’.Sequence analysis showed that‘Chuanhuang 1’and‘Huangdan’had different CsCCD1 promoter sequences,leading to significantly higher CsCCD1 expression andβ-ionone accumulation in‘Chuanhuang 1’.These results indicated that the promoter and coding sequence diversity of CsCCD1 might contribute to the differential accumulation ofβ-ionone in different tea cultivars.

关键词： Camellia sinensis(L.)Kuntze Carotenoid cleavage dioxygenase β-carotene β-ionone Promoter Differential accumulation

Amplification of early drought responses caused by volatile cues emitted from neighboring tea plants

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Horticulture Research 2021年第1期8卷 3337-3348页

作者： Jieyang Jin Mingyue Zhao Ting Gao Tingting Jing Na Zhang jingming wang Xianchen Zhang Jin Huang Wilfried Schwab Chuankui Song State Key Laboratory of Tea Plant Biology and Utilization International Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural University230036 HefeiAnhuiP.R.China Biotechnology Institute Chengdu Newsun Crop Science Co.Ltd610212 ChengduP.R.China Biotechnology of Natural Products Technische Universität MünchenLiesel-Beckmann-Str.185354 FreisingGermany

Plants have developed sophisticated mechanisms to survive in dynamic *** can communicate via volatile organic compounds(VOCs)to warn neighboring plants of *** most cases,VOCs act as positive regulators of plant ***,the communication and role of volatiles in response to drought stress are poorly ***,we showed that tea plants release numerous *** them,methyl salicylate(MeSA),benzyl alcohol,and phenethyl alcohol markedly increased under drought ***,further experiments revealed that drought-induced MeSA lowered the abscisic acid(ABA)content in neighboring plants by reducing 9-cis-epoxycarotenoid dioxygenase(NCED)gene expression,resulting in inhibition of stomatal closure and ultimately decreasing early drought tolerance in neighboring *** application of ABA reduced the wilting of tea plants caused by MeSA *** of Nicotiana benthamiana to MeSA also led to severe wilting,indicating that the ability of drought-induced MeSA to reduce early drought tolerance in neighboring plants may be conserved in other plant *** together,these results provide evidence that drought-induced volatiles can reduce early drought tolerance in neighboring plants and lay a novel theoretical foundation for optimizing plant density and spacing.

关键词： drought neighboring volatile

Induction of priming by cold stress via inducible volatile cues in neighboring tea plants^FA

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Journal of Integrative Plant Biology 2020年第10期62卷 1461-1468页

作者： Mingyue Zhao Lu wang jingming wang Jieyang Jin Na Zhang Lei Lei Ting Gao Tingting Jing Shangrui Zhang Yi Wu Bin Wu Yunqing Hu Xiaochun Wan Wilfried Schwab Chuankui Song State Key Laboratory of Tea Plant Biology and Utilization International Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural UniversityHefei 230036China National Center for Tea Plant Improvement Tea Research InstituteChinese Academy of Agricultural SciencesKey Laboratory of Tea Biology and Resources UtilizationMinistry of Agriculture and Rural AffairsHangzhou 310008China Biotechnology of Natural Products Technische Universitat München 85354FreisingGermany

Plants have evolved sophisticated defense mechanisms to overcome their sessile ***,if and how volatiles from cold‐stressed plants can trigger interplant communication is still ***,we provide the first evidence for interplant communication via inducible volatiles in cold *** volatiles,including nerolidol,geraniol,linalool,and methyl salicylate,emitted from cold‐stressed tea plants play key role(s)in priming cold tolerance of their neighbors via a C‐repeatbinding factors‐dependent *** knowledge will help us to understand how plants respond to volatile cues in cold stress and agricultural ecosystems.

关键词： volatile neighboring overcome

Volatile compound-mediated plant-plant interactions under stress with the tea plant as a model

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Horticulture Research 2023年第9期10卷 281-292页

作者： Jieyang Jin Mingyue Zhao Tingting Jing Mengting Zhang Mengqian Lu Guomeng Yu jingming wang Danyang Guo Yuting Pan Timothy D.Hoffmann Wilfried Schwab Chuankui Song State Key Laboratory of Tea Plant Biology and Utilization International Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural University230036HefeiAnhuiChina Biotechnology of Natural Products Technische Universität MünchenLiesel-Beckmann-Str.185354 FreisingGermany

Plants respond to environmental stimuli via the release of volatile organic compounds(VOCs),and neighboring plants constantly monitor and respond to these VOCs with great sensitivity and *** sensing can trigger increased plant fitness and reduce future plant damage through the priming of their own *** defense mechanism in neighboring plants can either be induced by activation of the regulatory or transcriptional machinery,or it can be delayed by the absorption and storage of VOCs for the generation of an appropriate response *** much research,many key questions remain on the role of VOCs in interplant communication and plant *** we review recent research on the VOCs induced by biotic(*** and pathogens)and abiotic(***,drought,and salt)stresses,and elucidate the biosynthesis of stress-induced VOCs in tea *** focus is on the role of stress-induced VOCs in complex ecological ***,the roles of VOCs under abiotic stress are ***,we discuss pertinent questions and future research directions for advancing our understanding of plant interactions via VOCs.

关键词： stress drought compound

承压水沿煤层底板递进导升突水机理的模拟与观测

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岩土工程学报 1999年第5期21卷 546-549页

作者：王经明煤炭科学研究总院西安分院西安710054

完整底板和非完整底板的注水试验表明，底板深处的耗水早于浅部，显示底板的破裂发生在采前。相似材料模拟具一定导升高度的底板在采动中的变化揭示了同样的规律，底板的原位测试发现承压水在采前出现了向上入侵的现象，二次应力给导... 详细信息

完整底板和非完整底板的注水试验表明，底板深处的耗水早于浅部，显示底板的破裂发生在采前。相似材料模拟具一定导升高度的底板在采动中的变化揭示了同样的规律，底板的原位测试发现承压水在采前出现了向上入侵的现象，二次应力给导升的发展提供条件，递进导升是突水的一种机理。

关键词：水头入侵突水机理注水试验矿坑突水煤炭

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煤层底板隐蔽水害危险源识别与定位试验研究

煤炭科学技术 2022年第8期50卷 172-179页

作者：丁立王经明华北科技学院河北廊坊065201

煤层底板隐伏导水陷落柱和断层突水频繁造成华北型煤矿淹井和灾害。为研究危险源在底板含水层内的多种效应以及底板隐蔽水危险源定位技术,根据华北C-P煤田的水文地质条件进行了沙槽试验研究。试验显示,在流场稳定后测区内陷落柱效应表... 详细信息

煤层底板隐伏导水陷落柱和断层突水频繁造成华北型煤矿淹井和灾害。为研究危险源在底板含水层内的多种效应以及底板隐蔽水危险源定位技术,根据华北C-P煤田的水文地质条件进行了沙槽试验研究。试验显示,在流场稳定后测区内陷落柱效应表现为水头、水温和浓度等值线都呈同心的闭合圈状,危险源位于最大等值线闭合圈内;测区内断层的效应表现为水头、水温和浓度的等值线都呈平行线状,危险源位于两条最大平行线之间。2种危险源的温度和浓度最大等值线范围都远大于水头的范围和危险源的实际尺寸,且实际位置都靠近等值线密度大的一侧。试验发现不论危险源为何种类型,水头等值线在逆水流方向上稀疏,在顺水流方向上密集;温度和浓度等值线则在顺水流方向密集,逆水流方向稀疏。当危险源位于测区以外时,靠近危险源区域的等值线的密度大,远离危险源的区域等值线的密度变小且走向发生大幅度转折。测区外两种危险源的效应类似,难以区分。根据试验结果,研究了图解法和等值线拟合法2种危险源定位方法:对于测区内的危险源,可以采用图解法和拟合法定位,即通过最大等值线区域圈定危险源范围,再经试算得出误差最小的位置;对于测区外的危险源,只能采用图解法定其存在方向。

关键词：煤层底板陷落柱断层沙槽试验寻源定位相似模拟

承压水沿煤层底板递进导升突水机理的物理法研究

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煤田地质与勘探 1999年第6期27卷 40-43页

作者：王经明煤炭科学研究总院西安分院 710054

完整底板和非完整底板的注水试验发现底板深处的耗水早于浅部，显示底板的破裂发生在采前，相似材料模拟具一定导升高度的底板在采动中的变化揭示了同样的规律。底板的原位应力测试发现承压水在采前出现了向上入侵的现象，二次应力给导... 详细信息

完整底板和非完整底板的注水试验发现底板深处的耗水早于浅部，显示底板的破裂发生在采前，相似材料模拟具一定导升高度的底板在采动中的变化揭示了同样的规律。底板的原位应力测试发现承压水在采前出现了向上入侵的现象，二次应力给导升的发展提供了条件，递进导升是突水机理之一。

关键词：承压水煤层底板突水机理物理法