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地理本体驱动的面向对象滑坡识别

遥感信息 2020年第2期35卷 94-99页

作者：魏家旺惠文华程梦真李海长安大学地质工程与测绘学院西安710064

高空间分辨率遥感影像的出现促进了面向对象影像分析技术的发展,面向对象影像分析技术也由此应用到滑坡信息提取,但现阶段因为该技术对专家知识利用不够,导致其仍不能脱离传统的数据驱动的模式识别范畴,专家分析不同带来对象分类结果不... 详细信息

高空间分辨率遥感影像的出现促进了面向对象影像分析技术的发展,面向对象影像分析技术也由此应用到滑坡信息提取,但现阶段因为该技术对专家知识利用不够,导致其仍不能脱离传统的数据驱动的模式识别范畴,专家分析不同带来对象分类结果不一致,自动化程度较低。针对上述问题,引入知识工程中本体概念,对滑坡地理本体进行表达、建模,实现滑坡信息的自动提取。以甘肃黑方台地区的高分遥感影像数据为例,以地理本体驱动的解译框架进行了滑坡识别实验。实验表明,基于本体概念进行面向滑坡地理对象的信息提取是一种较好的思路,有利于进一步提高滑坡信息计算机提取的自动化程度和精度。

关键词：面向对象滑坡识别滑坡地理本体高分影像语义分类

山西省临汾市矿区地表形变InSAR大范围探测与监测

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自然资源遥感 2022年第3期34卷 146-153页

作者：麻学飞张双成惠文华许强长安大学地质工程与测绘学院西安710054 地理信息工程国家重点实验室西安710054

矿区持续开采造成的地面沉陷会对环境带来巨大的破坏,如何快速获取大范围区域内矿区的位置和地表形变量成为矿区监测亟待解决的问题,为此利用合成孔径雷达干涉测量(interferometry synthetic aperture Radar,InSAR)技术对山西省临汾市... 详细信息

矿区持续开采造成的地面沉陷会对环境带来巨大的破坏,如何快速获取大范围区域内矿区的位置和地表形变量成为矿区监测亟待解决的问题,为此利用合成孔径雷达干涉测量(interferometry synthetic aperture Radar,InSAR)技术对山西省临汾市开展矿区沉陷大范围探测和监测研究。首先,通过差分合成孔径雷达干涉测量方法(differential interferometric synthetic aperture Rader,D-InSAR)处理分析12景Sentinel-1A升轨数据,对研究区域进行了矿区沉陷灾害大范围探测;然后利用小基线集(small baseline subset,SBAS)-InSAR处理了不同轨道共432景Sentinel-1A升轨数据,对普查出来的重点区域进行监测。研究结果发现,在临汾市共探测出105处沉陷区,沉陷区均处于临汾断陷盆地两侧的山体中。进一步对重点沉陷区域进行时序形变监测,发现多处沉陷区均处于持续形变过程中,且形变量级较大,最大形变速率达-381 mm/a,对地表生态环境和基础设施带来了巨大的破坏。通过光学影像寻找到了沉陷区附近的开采点,验证了基于InSAR技术的大范围探测与监测方法的可靠性,研究结果可为临汾市矿区沉陷灾害防治提供重要依据。

关键词：大范围探测差分干涉测量技术小基线集技术形变监测

A general stabilizing strategy based on vitamin C for n-type organic semiconductors

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Science China Materials 2025年第01期 303-304页

作者： hui Huang College of Materials Science and Opto-Electronic Technology Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

Organic semiconductors (OSCs), as an emerging next-generation semiconductor material, hold promising prospects in fields such as flexible displays, electronic skins, smart healthcare,and the Internet of Things, due to their excellent flexibility,solution processability, and tunable band structures [1,2]. These molecules are often classified into n-type and p-type, depending on whether the prevalent charge carriers are electrons or holes[3].

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基于遥感技术的高山极高山区冰川冰湖变化动态监测--以西藏藏南希夏邦玛峰地区为例

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中国地质灾害与防治学报 2021年第5期32卷 10-17页

作者：李海杨成生惠文华朱赛楠张勤长安大学地质工程与测绘学院陕西西安710054 中国地质环境监测院(自然资源部地质灾害技术指导中心) 北京100081

在全球变暖的大背景下,我国藏南地区冰川持续退缩,冰湖不断扩张,从而引发了一系列的地质灾害问题。文章利用Landsat系列影像,在面向对象分类方法的基础上采用波段比值法和NDWI指数提取了藏南希夏邦玛峰地区1994—2018年共9期冰川和冰湖... 详细信息

在全球变暖的大背景下,我国藏南地区冰川持续退缩,冰湖不断扩张,从而引发了一系列的地质灾害问题。文章利用Landsat系列影像,在面向对象分类方法的基础上采用波段比值法和NDWI指数提取了藏南希夏邦玛峰地区1994—2018年共9期冰川和冰湖的面积。研究表明,希夏邦玛峰地区净冰川持续退缩,总体速率为(1.28±0.32)%/a,冰湖的扩张速率约为(1.88±1.07)%/a。同时,面积小于1 km^(2)的冰川退缩极为严重,高达33.25%。其次气象再分析数据表明夏季气温和降水的增加可能是该地区净冰川退缩加快的重要原因,并且共同促进了冰湖的加速扩张,大大提高了该地区冰湖溃决的风险。

关键词：冰川遥感冰湖冰湖溃决洪水

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利用影像相关分析的遥感变化检测

测绘通报 2019年第10期 67-71页

作者：程梦真惠文华李延金魏家旺长安大学地质工程与测绘学院

针对利用单一光谱特征进行影像相关分析在遥感变化检测应用中效果较差的问题,提出了一种将纹理特征与光谱特征相结合的相关系数计算模型。应用中在对多时相影像进行相同尺度棋盘分割的基础上,先计算各对应分割窗口内的相关系数,再以其... 详细信息

针对利用单一光谱特征进行影像相关分析在遥感变化检测应用中效果较差的问题,提出了一种将纹理特征与光谱特征相结合的相关系数计算模型。应用中在对多时相影像进行相同尺度棋盘分割的基础上,先计算各对应分割窗口内的相关系数,再以其中心点的坐标和相关系数值作为一个特征点,在三维空间中进行插值处理得到整个区域的相关系数空间分布图;进一步通过密度分割处理提取变化信息。本文以两期GF-1影像数据进行了变化信息提取试验,结果表明,采用组合特征相关系数的变化检测结果明显优于单一光谱相关系数的变化检测结果。组合相关系数的应用研究为利用影像相关分析方法从高分影像中提取变化信息提供了一种新的思路。

关键词：影像相关变化检测棋盘分割组合相关系数密度分割

Decoding the nexus:branched-chain amino acids and their connection with sleep,circadian rhythms,and cardiometabolic health

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Neural Regeneration Research 2025年第5期20卷 1350-1363页

作者： hui Li Laurent Seugnet Department of Neurology Xijing HospitalXi’anShaanxi ProvinceChina Centre de Recherche en Neurosciences de Lyon Integrated Physiology of the Brain Arousal Systems(WAKING)UniversitéClaude Bernard Lyon 1INSERM U1028CNRS UMR 5292BronFrance

The sleep-wake cycle stands as an integrative process essential for sustaining optimal brain function and,either directly or indirectly,overall body health,encompassing metabolic and cardiovascular *** the heightened metabolic activity of the brain,there exists a considerable demand for nutrients in comparison to other *** these,the branched-chain amino acids,comprising leucine,isoleucine,and valine,display distinctive significance,from their contribution to protein structure to their involvement in overall metabolism,especially in cerebral *** the first amino acids that are released into circulation post-food intake,branched-chain amino acids assume a pivotal role in the regulation of protein synthesis,modulating insulin secretion and the amino acid sensing pathway of target of ***-chain amino acids are key players in influencing the brain's uptake of monoamine precursors,competing for a shared *** their involvement in protein synthesis,these amino acids contribute to the metabolic cycles ofγ-aminobutyric acid and glutamate,as well as energy ***,they impact GABAergic neurons and the excitation/inhibition *** rhythmicity of branchedchain amino acids in plasma concentrations,observed over a 24-hour cycle and conserved in rodent models,is under circadian clock *** mechanisms underlying those rhythms and the physiological consequences of their disruption are not fully *** sleep,obesity,diabetes,and cardiovascular diseases can elevate branched-chain amino acid concentrations or modify their oscillatory *** mechanisms driving these effects are currently the focal point of ongoing research efforts,since normalizing branched-chain amino acid levels has the ability to alleviate the severity of these *** this context,the Drosophila model,though underutilized,holds promise in shedding new light on these *** findings indicate its po

关键词： branched-chain amino acids cardiovascular health circadian clock drosophila insulin metabolism sleep γ-aminobutyric acid

SBAS-InSAR解译福州市地表沉降时空变化研究

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测绘科学 2022年第3期47卷 103-109页

作者：郑文潘张双成王余沛惠文华庞校光长安大学地质工程与测绘学院西安710054 福建省地质测绘院福州350011

针对传统小基线集干涉测量技术在获取南方海滨型城市地面沉降信息时受大气影响较大的问题,在其基础上使用通用大气校正在线服务,去除大气相位,获取福州市市区地面沉降空间分布特征,并利用InSAR Stacking技术反演了研究区的沉降速率。选... 详细信息

针对传统小基线集干涉测量技术在获取南方海滨型城市地面沉降信息时受大气影响较大的问题,在其基础上使用通用大气校正在线服务,去除大气相位,获取福州市市区地面沉降空间分布特征,并利用InSAR Stacking技术反演了研究区的沉降速率。选取覆盖研究区48景Sentinel-1A影像数据,以及相应时间的GACOS数据,获取2017—2019年的福州市市区地面沉降信息。结果表明:福州市市区存在6个沉降区,最大沉降速率为-19.2mm/a,属于义序高速公路项目的建设范围;其他沉降区均分布在地铁站及建筑密集区,最大沉降量达到-50mm,温泉保护区已处于相对稳定状态;道路施工、地铁的建设、地下水的开采以及断层带的活动可能对福州市市区地面沉降有一定的影响。

关键词：福州小基线集通用大气校正在线服务 InSAR Stacking 地面沉降

Interaction between dopaminergic and cholinergic transmission in the nucleus accumben mediates the heroin relapse induced by conditioned cues

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Interaction between dopaminergic and cholinergic transmissio...

Investigating Müller glia reprogramming in mice: a retrospective of the last decade, and a look to the future

中国神经科学学会第四次会员代表大会暨第七届全国学术会议

作者： wenhua ZHOU,hui-Fen LIU,Sui-En TANG,Miao-Jun LAI,Hua-Qiang ZHU,Fu-Qiang ZHANG Laboratory of Behavioral Neuroscience,Ningbo Addiction Research and Treatment Center,School of Medicine,Ningbo University,Ningbo 315010,China

＜正＞The mesolimbic dopamine system projects from VTA to the nucles accumbens（NAc） and is a key neural substrate regulating drug *** previous experiment showed that the enhacement of acetylcholine in NAc blocks the heroin seeking induced by conditioned *** present study was to observe the activation patterns of NAc neurons marked by FosB during the instatement induced by condtioned cues after heroin *** rats were self- administered heroin infusion under escalating FR1-5 reinforcement schedule for two *** reinstatement was tested after the withdrawal for 2 *** active responding induced by conditioned cues which associated previsously with heroin infusion was higher than that indcued by ***,pretreatment with an acetylcholinestase inhibitor could decreased the responding induced by conditioned cues compared the conditioned cues exposed *** FosB positive nuclei was mainly located in the TH positive neurons in the NAc shell,but did not change in the NAc core during conditioned cues induced *** contrast,the relative intensity of ChAT expression in NAc core and shell decreased when exposed to conditioned *** pretreatment with the AChE inhibitor increased the ChAT and FosB expression in NAc core and shell,and also inhibited the increase of TH and FosB positive neurons in NAc shell induced by conditioned *** data demonstrated that heroin withdrawal may result in the neuroadapation of dopaminergic and acetylcholinergic transmission,and acetylcholine play a reciprocal role in the heroin relapse induced by conditioned cues.

关键词： Nucleus accumben acetylcholine neuroadaptation heroin conditioning

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Neural Regeneration Research 2025年第4期20卷 946-959页

作者： Zhiyuan Yin Jiahui Kang Xuan Cheng hui Gao Shujia Huo Haiwei Xu Key Lab of Visual Damage and Regeneration&Restoration of Chongqing Southwest Eye HospitalSouthwest HospitalThird Military Medical University(Army Medical University)ChongqingChina

Müller glia,as prominent glial cells within the retina,plays a significant role in maintaining retinal homeostasis in both healthy and diseased *** lower vertebrates like zebrafish,these cells assume responsibility for spontaneous retinal regeneration,wherein endogenous Müller glia undergo proliferation,transform into Müller glia-derived progenitor cells,and subsequently regenerate the entire retina with restored ***,Müller glia in the mouse and human retina exhibit limited neural reprogramming.Müller glia reprogramming is thus a promising strategy for treating neurodegenerative ocular disorders.Müller glia reprogramming in mice has been accomplished with remarkable success,through various *** in molecular,genetic,epigenetic,morphological,and physiological evaluations have made it easier to document and investigate the Müller glia programming process in ***,there remain issues that hinder improving reprogramming efficiency and ***,understanding the reprogramming mechanism is crucial toward exploring factors that will improve Müller glia reprogramming efficiency,and for developing novel Müller glia reprogramming *** review describes recent progress in relatively successful Müller glia reprogramming *** also provides a basis for developing new Müller glia reprogramming strategies in mice,including epigenetic remodeling,metabolic modulation,immune regulation,chemical small-molecules regulation,extracellular matrix remodeling,and cell-cell fusion,to achieve Müller glia reprogramming in mice.

关键词： cell fusion chemical small-molecules epigenetic extracellular matrix immune metabolic mice Müller glia neurodegenerative diseases reprogramming retina regeneration