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Automatic selection of permanent scatterers-based GCPs for refinement and reflattening in InSAR DEM generation

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International Journal of Digital Earth 2022年第1期15卷 954-974页

作者： Yongjiu Feng Yilun Zhou yanling chen Pengshuo Li Mengrong Xi Xiaohua Tong College of Surveying & Geo-Informatics Tongji UniversityShanghaiPeople’s Republic of China The Shanghai Key Laboratory of Space Mapping and Remote Sensing for Planetary Exploration Tongji UniversityShanghaiPeople’s Republic of China Shanghai Astronomical Observatory Chinese Academy of SciencesShanghaiPeople’s Republic of China

In DEM generation using interferometric synthetic aperture radar(InSAR),the ground control points(GCPs)for refinement and reflattening are usually selected by manual selection,field surveying,GPS points and existing basemaps,which may not be completely suitable for consequent *** proposed a new method(auto-PS-GCP)of GCP selection based on permanent scatterers,which automatically defines the thresholds for the coherence,amplitude,and amplitude dispersion index to select permanent scatterer as the *** GCP thinning(auto-PS-GCP-Thin)was further conducted considering the point density,distances among points and terrain *** used a three-stage assessment that includes:(1)phase stability and intensity of the GCPs,(2)RMSEs of the elevations between GCPs and homonymous points in the reference DEM,and(3)generated DEM *** areas respectively in the plain,hilly and mountainous regions were selected to verify the proposed *** assessment using both SRTM DEM andICESat-2 points shows that the DEM accuracy of auto-PS-GCP-Thin was improved by 20%∼30%for different areas compared to the manual,where the best DEM accuracy of 4.71 m was found in the plain *** is concluded that the proposed methods are effective and reliable in various areas with different terrain conditions.

关键词： InSAR permanent scatterers automatic threshold definition ground control points DEM generation

Precise absolute positioning for a single-frequency user

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Science China(Physics,Mechanics & Astronomy) 2013年第8期56卷 1591-1597页

作者： LI HaoJun TANG GuiFeng HE Feng WU Bin HU XiaoGong chen yanling Shanghai Astronomical Observatory Chinese Academy of Sciences Guangxi Key Laboratory of Spatial Information and Geomatics Guilin University of Technology Shanghai Key Laboratory of Space Navigation and Position Techniques Beijing Satellite Navigation Center

A new strategy to realize precise absolute positioning for a single-frequency user is presented. In the presented strategy, the receiver clock and ambiguities are removed using the satelliteand epoch-differenced (SDED) algorithm. As a further development of the SDED algorithm, a regional augmentation network is used to generate the SDED atmospheric delays at the user. The weakened mathematic property due to the epoch-differenced operation is improved by adding the generated atmospheric delays and applying the robust estimation. To test the new approach, the 24-h data at 5 Continuous Operation Reference Station (CORS) stations in Shanghai is processed. The results show a more than 96% success rate, defined as the case where three directions achieve the desired positioning accuracy of 10 cm, when the observation is longer than 20 min. The 20-min static results show that the new method can reach an accuracy of 3.42, 4.76 and 9.26 cm in the North, East and Up directions, respectively. An experiment was carried out to assess the kinematic positioning. The results show that the kinematic positioning accuracy is 4.11, 5.31 and 4.05 cm in the north-south, east-west and height directions,respectively.

关键词： absolute positioning single-frequency user correction information

Evaporation Characteristics and Morphological Evolutions of Fuel Droplets After Hitting Different Wettability Surfaces

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Journal of Bionic Engineering 2023年第2期20卷 734-747页

作者： yanling chen Liang Guo Ningning Cai Wanchen Sun Yuying Yan Degang Li Han Wang Rong Xuan State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130025China School of Business and Management Jilin UniversityChangchun130012China Faculty of Engineering University of NottinghamNottinghamNG72RDUK

To solve the wall-wetting problem in internal combustion engines,the physical and chemical etching methods are used to prepare different wettability surfaces with various *** evaporation characteristics and morphological evolution processes of diesel and n-butanol droplets after hitting the various surfaces are *** results show that the surface microstructures increase the surface roughness(Ra),enhancing the oleophilic property of the oleophilic *** with n-butanol droplets,the same surface shows stronger oleophobicity to diesel *** a droplet hits an oleophilic property surface with a lower temperature,the stronger the oleophilicity,the shorter the evaporation *** oleophilic surfaces,larger Ra leads to a higher Leidenfrost temperature(TLeid).The low TLeid caused by enhanced oleophobicity,dense microstructures and increased convex dome height facilitates droplet rebound and promotes the evaporation of the wall-impinging droplets into the *** evaporation rate of the droplets is not only related to the characteristics of the solid surfaces and the fuel droplets but also affected by the heat transfer rate to the droplets in different boiling *** spreading diameter of a droplet on an oleophobic surface varies significantly less with time than that on an oleophilic surface under the same surface temperature.

关键词： Fuel droplets Wettability Evaporation time Leidenfrost temperature Morphological evolutions

混合型肝癌超声造影与增强磁共振影像表现的对比分析

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现代肿瘤医学 2024年第15期32卷 2826-2832页

作者：陈佳楠朱宇莉陈彦玲包静文薛芷霞广东药科大学附属第一医院广东广州510000 复旦大学附属中山医院超声科上海200032 中山大学附属第一医院广东广州510000 河西学院医学院甘肃张掖734000

目的:分析比较混合型肝细胞癌-胆管癌(combined hepatocellular-cholangiocarcinoma, cHCC-ICC)的超声造影(contrast-enhanced ultrasound, CEUS)与增强磁共振成像(contrast-enhanced magnetic resonance imaging, CE-MRI)特点,并探究影像学联合肿瘤标志物检测对cHCC-ICC检出的提示作用,以期提高对cHCC-ICC的术前诊断水平。方法:回顾性分析并总结86例经病理证实为cHCC-ICC患者的术前CEUS及CE-MRI图像特征。探究“AFP和CA19-9同时升高”“CEUS/CE-MRI增强模式与肿瘤标志物升高不一致”“CEUS与CE-MRI增强模式不一致”及上述诊断标准联合对cHCC-ICC的诊断符合率。结果:cHCC-ICC在CEUS上病灶呈HCC和ICC增强模式的比例分别为36.0%及64.0%,在CE-MRI上这一比例分别为40.7%及59.3%。8.1%cHCC-ICC患者血清AFP与CA19-9水平同时升高,38.4%患者CEUS增强模式与肿瘤标志物升高不一致,41.9%患者CE-MRI增强模式与肿瘤标志物升高不一致,51.2%患者CEUS与CE-MRI增强模式存在差异,以上述标准对cHCC-ICC进行联合诊断,符合率为74.4%。结论:cHCC-ICC在CEUS及CE-MRI上可存在与HCC、ICC相似的影像学特点,以类ICC增强模式更多见。联合肿瘤标志物、CEUS及CE-MRI有助于提高对cHCC-ICC的检出率。

关键词：混合型肝细胞癌-胆管癌超声造影增强磁共振

Coordinated Transcriptional Regulation by the UVB Photoreceptor and Multiple Transcription Factors for Plant UV-B Responses

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Molecular Plant 2020年第5期13卷 777-792页

作者： Chongzhen Qian Zhiren chen Qing Liu Weiwei Mao yanling chen Wei Tian Yan Liu Jiupan Han Xinhao Ouyang Xi Huang State Key Laboratory of Cellular Stress Biology School of Life SciencesXiamen UniversityXiamen 361102China

Non-damaging ultraviolet B(UV-B)light promotes photomorphogenic development and stress acclimation through UV-B-specific signal transduction in ***-B irradiation induces monomerization and nuclear translocation of the UV-B photoreceptor UV RESISTANCE LOCUS 8(UVR8).However,it is not clear how the nuclear localization of UVR8 leads to changes in global gene ***,we reveal that nuclear UVR8 governs UV-B-responsive transcriptional networks in concert with several previously known transcription factors,including ELONGATED HYPOCOTYL 5(HY5)and PHYTOCHROME INTERACTING FACTOR 4(PIF4).Based on the transcriptomic analysis,we identify MYB13 as a novel positive regulator in UV-B-induced cotyledon expansion and stress ***13 is UV-B inducible and is predominantly expressed in the *** results demonstrate that MYB13 protein functions as a transcription factor to regulate the expression of genes involved in auxin response and flavonoid biosynthesis through direct binding with their *** addition,photoactivated UVR8 interacts with MYB13 in a UV-B-dependent manner and differentially modulates the affinity of MYB13 with its *** together,our results elucidate the cooperative function of the UV-B photoreceptor UVR8 with various transcription factors in the nucleus to orchestrate the expression of specific sets of downstream genes and,ultimately,mediate plant responses to UV-B light.

关键词： UV-B UVR8 MYB13 transcription factor transcriptional regulation

生活事件对大学生抑郁的影响:反刍思维、自我损耗的中介作用和心理韧性的调节作用

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锦州医科大学学报（社会科学版） 2024年第1期22卷 78-81,86页

作者：于海波陈艳玲张俊杰顾琼安徽中医药大学心理系安徽合肥230041

目的探究生活事件和大学生抑郁间的关系,检验反刍思维和自我损耗的中介作用以及心理韧性的调节作用。方法采用流调中心抑郁量表简版、青少年生活事件量表、反刍思维量表、自我损耗量表、青少年心理韧性量表,对526名大学生进行问卷调查... 详细信息

目的探究生活事件和大学生抑郁间的关系,检验反刍思维和自我损耗的中介作用以及心理韧性的调节作用。方法采用流调中心抑郁量表简版、青少年生活事件量表、反刍思维量表、自我损耗量表、青少年心理韧性量表,对526名大学生进行问卷调查。结果生活事件对大学生抑郁的影响有两条中介路径在发挥作用:反刍思维的独立中介作用及反刍思维和自我损耗的链式中介作用;心理韧性对反刍思维独立中介作用的后期阶段具有显著的调节作用。结论生活事件并不能直接影响大学生抑郁,而是通过反刍思维和自我损耗的中介作用间接影响和作用;心理韧性可以缓冲反刍思维对大学生抑郁的负面影响。大学生抑郁防治可以从提高心理韧性和降低反刍思维入手。

关键词：大学生抑郁生活事件反刍思维自我损耗心理韧性

艾司西酞普兰联合rTMS对抑郁症患者P300、MMN的影响

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中国医药指南 2024年第28期22卷 6-9页

作者：郭秀娟陈艳玲高洁曹辉毛丽日照市精神卫生中心日照276800

目的探究抑郁症患者艾司西酞普兰联合重复经颅磁刺激(rTMS)对相关电位P300与相关电位成分失匹配负波(MMN)的影响。方法应用随机数字表法将2022年2月至2023年12月于我院就诊的108例抑郁症患者分为两组,观察组(54例)及对照组(54例)。对照... 详细信息

目的探究抑郁症患者艾司西酞普兰联合重复经颅磁刺激(rTMS)对相关电位P300与相关电位成分失匹配负波(MMN)的影响。方法应用随机数字表法将2022年2月至2023年12月于我院就诊的108例抑郁症患者分为两组,观察组(54例)及对照组(54例)。对照组应用艾司西酞普兰治疗,在其基础上观察组联合rTMS治疗。比较两组相关电位P300及MMN潜伏期、波幅、抑郁状态(HAMD-17)及认知功能(MoCA)评分;分析治疗前后P300及MMN潜伏期、波幅与HAMD-17的相关性。结果观察组治疗后的相关电位P300及MMN潜伏期均较对照组短,而波幅均较对照组高(P<0.05)。观察组治疗后的HAMD-17评分较对照组低,而MoCA评分较对照组高(P<0.05)。治疗前P300和MMN潜伏期、波幅与HAMD-17评分无相关性;治疗后,潜伏期P300及MMN与HAMD-17评分呈正相关(r=0.527、0.631),波幅P300及MMN与HAMD-17评分呈负相关(r=-0.624、-0.428)。结论抑郁症患者应用艾司西酞普兰联合rTMS治疗效果显著,有助于提升患者的认知功能,改善MMN及事项相关电位P300水平,同时还可有效缓解患者抑郁等不良情绪,对促进患者预后改善意义重大,值得临床应用。

关键词：抑郁症高频重复经颅磁刺激艾司西酞普兰 P300 失匹配负波

2014—2023年官渡区食源疾病主动监测结果分析

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食品安全导刊 2024年第22期 55-59页

作者：李锐娟李灼琴冯玲张曼陈艳玲昆明市官渡区疾病预防控制中心云南昆明650020

目的:对官渡区食源性疾病主动监测相关数据进行流行病学分析,旨在了解官渡区重要食源性疾病的流行特征。方法:对满足条件的食源性疾病腹泻病人采集粪便标本并收集相关信息,对粪便样本进行5种特定病原体的检测。结果:2014—2023年官渡区... 详细信息

目的:对官渡区食源性疾病主动监测相关数据进行流行病学分析,旨在了解官渡区重要食源性疾病的流行特征。方法:对满足条件的食源性疾病腹泻病人采集粪便标本并收集相关信息,对粪便样本进行5种特定病原体的检测。结果:2014—2023年官渡区共采集生物样本1 883份,阳性137份,阳性检出率7.28%,检出的病原体以诺如病毒为主,占阳性标本的65.69%,其次为沙门氏菌,占20.44%。12月病原体检出率最高,为16.44%。0~14岁年龄组的病原体检出率最高,占阳性样本的81.02%,职业分布上散居儿童病原体检出率最高,占阳性样本的64.23%,可疑暴露食品中以多种食品为主。结论:官渡区食源性疾病发生具有人群、病原体和时间方面的流行病学特征,主动监测特定病原体检出率较低,以诺如病毒和沙门氏菌为主。

关键词：食源性疾病病原体流行病学特征

Jiaweisinisan facilitates neurogenesis in the hippocampus after stress damage

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Neural Regeneration Research 2013年第12期8卷 1091-1102页

作者： Lili Wu Chuanlian Ran Shukao Liu Lizhen Liao yanling chen Hualei Guo Weikang Wu Can Yan Department of Basic Theory of Chinese Medicine Guangzhou University of Chinese Medicine Department of Traditional Chinese Medicine Luzhou Medicine College Institute of Pharmaceutical Research Yangtze River Pharmaceutical Group Company Limited Department of Pathophysiology Zhongshan School of Medicine Sun Yat-sen University

The traditional Chinese medicine Jiaweisinisan has antidepressant effects, and can inhibit hypothalamus-pituitary-adrenal gland axis hyperactivity in stress-induced depression. In this study, rat hippocampal neural precursor cells were cultured in serum-free medium in vitro and a stress damage model was established with 120 IJM corticosterone. Cells were treated with 10% （v/v） Jiaweisinisan drug-containing serum and the corticosterone antagonist RU38486. Results of the 3-（4,5-dimethylthiazol-2-yl）-3,5-di-phenytetrazoliumromide assay showed that both Jiaweisinisan drug-containing serum and RU38486 promoted the proliferation of neural precursor cells after corticosterone exposure. Immunofluorescence detection showed that after Jiaweisinisan drug-containing serum and RU38486 treatment, the 5-bromo-2-deoxyuridine/terminal deoxynucleotidyl transferase dUTP nick end labeling ratio in hippocampal neural precursor cells significantly increased, and the apoptotic rates of glial cells reduced, and neuron-like cell differentiation from neural precursor cells significantly increased. Our experimental findings indicate that Jiaweisinisan promotes hippocampal neurogenesis after stress damage.

关键词： neural regeneration traditional Chinese medicine Jiaweisinisan corticosterone hippocampalneural precursor cells proliferation differentiation apoptosis grants-supported paper neuroregeneration