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Tomographic inversion of OBS converted shear waves:case study of profile EW6 in the Dongsha area

Acta Oceanologica Sinica 2024年第8期43卷 13-25页

作者： Genggeng Wen Kuiyuan Wan shaohong xia.xiuwei ye Huilong Xu Chaoyan Fan Jinghe Cao Shunshan Xu CEA Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology Guangdong Earthquake AgencyGuangzhou 510070China Guangdong Science and Technology Collaborative Innovation Center for Earthquake Prevention and Disaster Mitigation Guangzhou 510070China MOE Key Laboratory of Disaster Forecast and Control in Engineering-Urban Earthquake Safety Laboratory Guangzhou 510070China CAS Key Laboratory of Ocean and Marginal Sea Geology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China 6 Centro de Geociencias Universidad Nacional Autónoma de MéxicoQuerétaroC.P.76230Mexico

Studies of converted S-wave data recorded on the ocean bottom seismometer(OBS)allow for the estimation of crustal S-wave velocity,from which is further derived the Vp/Vs ratio to constrain the crustal lithology and geophysical *** a precise S-wave velocity model is important for deep structural research,and inversion of converted S-waves provides a potential ***,the inversion of the converted S-wave remains a weakness because of the complexity of the seismic ray path and the inconsistent conversion *** this study,we introduced two travel time correction methods for the S-wave velocity inversion and imaged different S-wave velocity structures in accordance with the corresponding corrected S-wave phases using seismic data of profile EW6 in the northeastern South China Sea(SCS).The two inversion models show a similar trend in velocities,and the velocity difference isyer has high velocities,the near offset crustal S-wave refractions cannot be *** contrast,the ray tracing of Moho S-wave reflections was not significantly impacted by the velocity of the *** two travel time correction methods have their own advantages,and the application of different approaches is based on additional *** works provide an important reference for future improvements in converted S-wave research.

关键词： converted S-wave S-wave velocity structure inversion ocean bottom seismometer northeastern South China Sea

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Tomographic inversion of OBS converted shear waves:case study of profile EW6 in the Dongsha area

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Acta Oceanologica Sinica 2024年第08期 13-25页

作者： Genggeng Wen Kuiyuan Wan shaohong xia.xiuwei ye Huilong Xu Chaoyan Fan Jinghe Cao Shunshan Xu CEA Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology Guangdong Earthquake Agency Guangdong Science and Technology Collaborative Innovation Center for Earthquake Prevention and Disaster Mitigation MOE Key Laboratory of Disaster Forecast and Control in Engineering-Urban Earthquake Safety Laboratory CAS Key Laboratory of Ocean and Marginal Sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) Centro de Geociencias Universidad Nacional Autónoma de México

Studies of converted S-wave data recorded on the ocean bottom seismometer(OBS) allow for the estimation of crustal S-wave velocity, from which is further derived the Vp/Vs ratio to constrain the crustal lithology and geophysical properties. Constructing a precise S-wave velocity model is important for deep structural research,and inversion of converted S-waves provides a potential solution. However, the inversion of the converted S-wave remains a weakness because of the complexity of the seismic ray path and the inconsistent conversion *** this study, we introduced two travel time correction methods for the S-wave velocity inversion and imaged different S-wave velocity structures in accordance with the corresponding corrected S-wave phases using seismic data of profile EW6 in the northeastern South China Sea(SCS). The two inversion models show a similar trend in velocities, and the velocity difference is yer has high velocities, the near offset crustal S-wave refractions cannot be traced. In contrast, the ray tracing of Moho S-wave reflections was not significantly impacted by the velocity of the sediments. The two travel time correction methods have their own advantages, and the application of different approaches is based on additional requirements. These works provide an important reference for future improvements in converted S-wave research.

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Dissecting the cell microenvironment of ovarian endometrioma through single-cell RNA sequencing

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Science China Life Sciences 2024年

作者： Jiangpeng Wu Siyu xia Wenting ye Yan Sun Jing Cai Fubing Yu Haiping Wen xiuwei Yi Taikang Li Mingwei Chen Jiayun Chen Ge Song Chuanbin Yang Yali Song Jigang Wang Department of Reproductive Medicine Dongguan Maternal and Child Health Care Hospital Department of Urology and Shenzhen Clinical Research Centre for Geriatrics Shenzhen People's Hospital Southern University of Science and Technology State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs Artemisinin Research Center and Institute of Chinese Materia Medica China Academy of Chinese Medical Sciences Reproductive Medicine Center Foshan Women and Children Hospital State Key Laboratory of Antiviral Drugs School of Pharmacy Henan University

Ovarian endometrioma（OE）, also known as “chocolate cysts,” is a cystic mass that develops in the ovaries due to endometriosis and is a common gynecological condition characterized by the growth of endometrial tissue outside the uterus, leading to symptoms such as dysmenorrhea, pelvic pain, and infertility. However, the precise molecular and cellular mechanisms driving this pathophysiology remain largely unknown, posing challenges for diagnosis and treatment. Here, we employed integrated single-cell transcriptomic profiling of over52,000 individual cells from endometrial tissues of OE patients and healthy donors and identified twelve major cell populations. We identified notable alterations in cell type-specific proportions and molecular signatures associated with OE. Notably, the activation of IGFBP5+macrophages with pro-inflammatory properties, NK cell exhaustion, and aberrant proliferation of IQCG+and KLF2+epithelium are key features and may be the potential mechanisms underlying the pathogenesis of OE. Collectively, our data contribute to a better understanding of OE at the single cell level and may pave the way for the development of novel therapeutic strategies.

关键词： ovary high-throughput sequencing transcriptomics gene expression analysis ligand-receptor analysis

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高职院校病原生物学与免疫学服务性学习教学模式的应用探索

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卫生职业教育 2024年第7期42卷 59-62页

作者：邢秀伟叶珊珊祝芳冯霞李娟商丘医学高等专科学校河南商丘476000 商丘市第一人民医院河南商丘476100

针对病原生物学与免疫学课程教学效果不佳现状,探索高职院校病原生物学与免疫学课程服务性学习教学模式的构建和应用,为基础医学课程教学质量提升奠定基础。

关键词：高职院校病原生物学与免疫学服务性学习教学模式

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The application of large volume airgun sources to the onshore-offshore seismic surveys: implication of the experimental results in northern South China Sea

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Chinese Science Bulletin 2007年第4期52卷 553-560页

作者： QIU XueLin CHEN Yong ZHU Rixiang XU HuiLong SHI xiaoBin ye ChunMing ZHAO MingHui xia shaohong CAS Key Laboratory of Marginal Sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China Institute of Geophysics China Earthquake Administration Beijing 100081 China Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China Earthquake Administration of Guangdong Province Guangzhou 510070 China

Onshore-offshore seismic experiments were carried out for the first time in northern South China Sea using large volume airgun sources at sea and seismic stations on land. The experimental results indicate that seismic signals from the new airgun array of R/V Shiyan 2 can be detected as far as 255 km. The signal effective area reaches nearly 50000 km2, which covers Hong Kong and Pearl River Delta. Compared with the old airgun array, the signal amplitude, propagation distance and effective area of the new airgun array have been increased notably, which demonstrates that the upgrade of the airgun source was successful. Comparisons with previous experimental results in other regions show that the shooting effect of the new airgun array is similar to those best airgun sources in the world. Especially, it is a new breakthrough in using the permanent seismic stations onshore to record long distance airgun signals offshore, which has great significance to the realization of the "seismic radar" concept and the 3D seismic surveys of crustal structure in coastal areas.

关键词：南海北部海上地震台海岸地震台大容量气枪震源人工地震地震勘探应用地壳结构

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Distribution and identification of the low-velocity layer in the northern South China Sea

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Progress in Natural Science:Materials International 2007年第5期17卷 591-600页

作者： Zhao Minghui, Qiu Xuelin, Xu Huilong, Shi xiaobin, Wu Shimin , ye Chunming and xia shaohong (Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China Earthquake Administration of Guangdong Province, Guangzhou 510070, China) Key Laboratory of Marginal Sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China Earthquake Administration of Guangdong Province Guangzhou 510070 China

The low-velocity layer (LVL), closely related with tectonic activities and dynamic settings, has always been a hot topic in the deep crustal structure studies. The deep seismic (OBS/OBH) and onshore-offshore experiments have been extensively implemented in the northern South China Sea (SCS) since the 1990s. Six seismic profiles were finished on the northern margin of SCS by domestic and international cooperations. The features of crustal structures were revealed and five velocity-inversion layers were discovered. Among them three LVLs with 3.0—3. 5 km·s-1 velocity are located in the sedimentary structure (2.0—6.0 km in depth and 2.0—4. 6 km in thickness) of the Yinggehai Basin and Pearl River Mouth Basin. They were identified by the reflective and refractive phases for their shallow depth. The other two LVLs with 5.5—6.0 km·s-1 velocity generally existed in the middle crust (7.0—18.0 km in depth) with an about 2.5—6.0 km thickness in the transitional crustal structure of the northeastern and northwestern SCS. They were detected by the refractive phase from their overlain and underlying layers. We explored the possible tectonic formation mechanisms combining with previously reported results, which provided evidence for the formation and evolution of SCS.

关键词： low-velocity layer deep crustal structure the northern South China Sea OBS/OBH and onshore-offshore seismic experiments.

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南海北部滨海断裂带的深部地球物理探测及其发震构造研究

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华南地震 2010年第S1期30卷 10-18页

作者：徐辉龙叶春明丘学林孙金龙夏少红中国科学院南海海洋研究所边缘海地质重点实验室广东广州510301 广东省地震局广东广州510070

滨海断裂带为华南亚板块与南海亚板块的分界断裂,是南海北部陆缘的重要控震构造和发震构造。为了探明南海北部海陆过渡带特别是滨海断裂带两侧的深部地壳结构变化特征,在南海北部进行了一系列的海陆地震联测的实验,根据海陆联合深地震... 详细信息

滨海断裂带为华南亚板块与南海亚板块的分界断裂,是南海北部陆缘的重要控震构造和发震构造。为了探明南海北部海陆过渡带特别是滨海断裂带两侧的深部地壳结构变化特征,在南海北部进行了一系列的海陆地震联测的实验,根据海陆联合深地震探测的结果,南海北部以滨海断裂带为界,断裂带西北部为华南亚板块的典型陆壳,地壳厚30km,上地壳下部存在一层速度为5.5～5.9km.s-1、厚度为3.0～4.0km的低速层,埋深约10～18km;断裂带东南部为南海亚板块减薄型陆壳,厚25～28km,上地壳下部的低速层逐渐减薄并最后尖灭。滨海断裂带为一个上下连续倾向SE的低速破碎带,宽度6～10km。滨海断裂带与上地壳下部的低速层的交接构造部位形成南海北部的重要应力集中带和应变能积聚带,是地震孕育、发生的深部动力学条件。滨海断裂带的发震构造属NEE向与NW向相交切的断裂构造型式,以NEE向的滨海断裂带为主,NW向断裂带为辅。

关键词：滨海断裂带海陆联测发震构造

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中药复明眼液对过氧化氢诱导体外培养的兔晶状体上皮细胞凋亡的c-fos蛋白表达的影响

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中国实用眼科杂志 2001年第11期19卷 818-820,T003页

作者：冯绍鸿王月春夏德昭中国航空工业中心医院眼科 100012 中国医科大学第一临床学院眼科

目的 :观察中药复明眼液对 H2 O2 诱导体外培养的兔晶体上皮细胞凋亡的 c- fos蛋白表达的影响 ,进一步探讨中药抗氧化作用的机制。方法 :采用终浓度 2 5 0 μmol/ L H2 O2 诱导体外培养的兔晶体上皮细胞凋亡 ,免疫组化方法检测凋亡的兔... 详细信息

目的 :观察中药复明眼液对 H2 O2 诱导体外培养的兔晶体上皮细胞凋亡的 c- fos蛋白表达的影响 ,进一步探讨中药抗氧化作用的机制。方法 :采用终浓度 2 5 0 μmol/ L H2 O2 诱导体外培养的兔晶体上皮细胞凋亡 ,免疫组化方法检测凋亡的兔晶体上皮细胞的 c- fos蛋白的表达。结果 :正常对照组兔晶体上皮细胞未见胞核阳性染色 ;模型对照组在 H2 O2 处理后 2 h胞核阴性染色 ,处理后 4h和 8h均见部分细胞胞核呈棕褐色阳性染色 ,处理后 12 h和 2 4h可见大量细胞胞核呈棕褐色阳性染色 ;中药治疗组在 H2 O2 处理后 2 h、 4h、 8h胞核均呈阴性染色 ,处理后 12 h和 2 4h仅见少量细胞胞核呈棕褐色阳性染色 ;阴性对照组兔晶体上皮细胞胞核未见阳性染色。结论 :终浓度 2 5 0 μmol/ L H2 O2 可以诱导体外培养的兔晶体上皮细胞凋亡的 c- fos蛋白表达 ,中药复明眼液可能是通过保护兔晶体上皮细胞的抗氧化作用而减少或延缓凋亡的兔晶体上皮细胞的 c-

关键词：中医药治疗 c-fos蛋白细胞凋亡兔晶体上皮细胞体外培养过氧化氢

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