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Genesis of the Jianbeigou Gold Deposit on the Southern Margin of the North China Craton: Insights from Fluid Inclusions, H-O-S Isotopes, and Pyrite in situ Trace Element Analyses

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Acta Geologica Sinica(English Edition) 2024年第4期98卷 969-991页

作者： LI Fengchun ZENG Qingdong ZHU Rixiang CHU Shaoxiong XIE Wei YU Bing wu jinjian LI Xinghui Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China School of Earth Science and Engineering Hebei University of EngineeringHandanHebei 056038China

The Jianbeigou gold deposit is a typical lode gold deposit in the Qinling metallogenic belt, located on the southern margin of the North China Craton. Three stages of the hydrothermal process can be distinguished, including the quartz ± pyrite, quartz-polymetallic sulfide, and quartz-carbonate ± pyrite stages. From the early to late stages, the homogenization temperatures of primary fluid inclusions are 281–362°C, 227–331°C, and 149–261°C, respectively. The corresponding salinities estimated for these fluids are 3.9–9.9 wt%, 0.4–9.4 wt%, and 0.7–7.2 wt% Na Cl equiv. Combined with laser Raman spectroscopy data, the ore-forming fluid belongs to a H_(2)O-CO_(2)-Na Cl ± CH_4 system with medium–low temperature and salinity. The δ~(18)Ofluid and δD values for the quartz veins are-1.0‰ to 6.0‰ and-105‰ to-84‰, respectively, which indicates that the ore-forming fluid is of mixed source, mainly derived from magma, with a contribution from meteoric water. Pyrite has been identified into three generations based on mineral paragenetic sequencing, including Py1, Py2, and Py3. The pyrites have δ~(34)S sulfur isotopic compositions from three stages between 3.7‰ and 8.4‰, indicating that sulfur mainly originated from magma. Te, Bi, Sb, and Cu contents in pyrite were all high and showed a strong correlation with Au concentrations. Native gold and the Au-Ag-Bi telluride minerals were formed concurrently, and the As concentration was low and decoupled from the Au content. Therefore, Te, Bi, Sb and other low-melting point chalcophile elements play an important role for gold mineralization in arsenic-deficient ore-forming fluid. Combined with the geological setting, evolution of pyrite, and ore-fluids geochemistry, we propose that the Jianbeigou deposit can be classified as a magmatic–hydrothermal lode gold deposit. Gold mineralization on the southern margin of the North China Craton is related to Early Cretaceous magmatism and formed in an extensional setting.

关键词： ore genesis H-O-S isotopes fluid inclusions in-situ trace element Jianbeigou gold deposit

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Survey of visual just noticeable difference estimation

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Frontiers of Computer Science 2019年第1期13卷 4-15页

作者： jinjian wu Guangming SHI Weisi LIN School of Electronic Engineering Xidian UniversityXi'an 710071China Collaborative Innovation Center of Information Sensing and Understanding Xidian UniversityXi'an 710071China School of Computer Engineering Nanyang Technological UniversitySingapore 639798Singapore

The concept of just noticeable difference (JND), which accounts for the visibility threshold (visual redundancy)of the human visual system,is useful in perceptionoriented signal processing *** this work,we present a comprehensive review of JND estimation ***, the visual mechanism and its corresponding computational modules are *** include luminance adaptation, contrast masking,pattern masking,and the contrast sensitivity ***,the existing pixel domain and subband domain YND models are presented and ***,the challenges associated with JND estimation are discussed.

关键词： just noticeable difference human visual system luminance adaptation contrast masking pattern masking contrast sensitivity function

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Surface defect detection competition with a bio-inspired vision sensor

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National Science Review 2023年第6期10卷 31-34页

作者： Anjing Guo Jupo Ma Renwei Dian Fuyan Ma jinjian wu Shutao Li School of Robotics Hunan University School of Artificial Intelligence Xidian University Pazhou Laboratory (Huangpu) College of Electrical and Information Engineering Hunan University Key Laboratory of Visual Perception and Artificial Intelligence of Hunan Province

INTRODUCTION Surface defects are inevitable during the product manufacturing process,such as impurities,scratches and dirt.D efects not only reduce the aesthetics and comfort of products,but may also degrade the functional *** are very concerned about inadequate defect detection because of potential economic and reputation ***,it is significant to study automatic defect detection *** machine vision-based defect detection mostly adopts a traditional CCD or CMOS vision sensor (VS) for ***,in real-world production lines,due to dynamic environments,traditional VS encounters difficulties in meeting the demands of defect detection,especially in modern high-precision product manufacturing.

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No-Reference Quality Assessment of Enhanced Images

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China Communications 2016年第9期13卷 121-130页

作者： Leida Li Wei Shen Ke Gu jinjian wu Beijing Chen Jianying Zhang School of Information and Electrical Engineering China University of Mining and Technology School of Computer Engineering Nanyang Technological University School of Electronic Engineering Xidian University School of Computer and Software Nanjing University of Information Science and Technology

Image enhancement is a popular technique,which is widely used to improve the visual quality of *** image enhancement has been extensively investigated,the relevant quality assessment of enhanced images remains an open problem,which may hinder further development of enhancement *** this paper,a no-reference quality metric for digitally enhanced images is *** kinds of features are extracted for characterizing the quality of enhanced images,including non-structural information,sharpness and ***,a total of 42 perceptual features are extracted and used to train a support vector regression(SVR) ***,the trained SVR model is used for predicting the quality of enhanced *** performance of the proposed method is evaluated on several enhancement-related databases,including a new enhanced image database built by the *** experimental results demonstrate the efficiency and advantage of the proposed metric.

关键词： image enhancement quality assessment no-reference perceptual feature SVR

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胶东焦家金矿带招贤金矿床的原位黄铁矿热电性特征及找矿指示意义

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矿床地质 2024年第4期43卷 899-917页

作者：吴金检曾庆栋张文代清龙李文柏瑞范宏瑞张哲铭李兴辉俞炳刘建明山东省深部金矿探测大数据应用开发工程实验室山东威海264209 中国自然资源航空物探遥感中心北京100083 中国科学院地质与地球物理研究所矿产资源研究重点实验室北京100029 中国科学院大学地球与行星科学学院北京100049 山东省地质调查院山东济南250014 内蒙古山金地质矿产勘查有限公司内蒙古赤峰024005 山东黄金地质矿产勘查有限公司山东莱州261400 中钢海外资源有限公司北京100080 中国地质调查局发展研究中心北京100037

胶东金矿集区是中国最大的黄金产地,焦家金矿带是重要的成矿亚带之一,产出了一系列超大型、大型金矿床,资源量占整个胶东地区的1/4,招贤金矿床为焦家带深部的大型金矿床。对招贤金矿床深部成矿潜力的评价可为焦家金矿带乃至胶东地区的... 详细信息

胶东金矿集区是中国最大的黄金产地,焦家金矿带是重要的成矿亚带之一,产出了一系列超大型、大型金矿床,资源量占整个胶东地区的1/4,招贤金矿床为焦家带深部的大型金矿床。对招贤金矿床深部成矿潜力的评价可为焦家金矿带乃至胶东地区的金矿床深部找矿预测提供科学依据。文章选取了招贤金矿床3个钻孔6个不同标高的矿石样品,进行了详细的矿物学、成矿元素以及黄铁矿热电性特征研究。通过扫描电镜及半定量成分分析,鉴别了银金矿是主要的金矿物,常以包体的形式赋存于黄铁矿中或其裂隙中。金矿床围岩蚀变分带明显,显示了较强的矿化作用,其矿物共生组合和多阶段的成矿特征与胶东其他超大型金矿床相似。通过Au等成矿元素分析,笔者认为Au及其相关性高的元素具有规律性的垂向变化特征,元素沉淀具有垂向间断性。利用原位黄铁矿热电性测试方法,精准测定了黄铁矿热电性参数,并通过热电系数离散程度、热电性导型、形成温度、延伸指数等计算分析,综合讨论了金矿床成矿潜力,认为招贤金矿床及焦家金成矿带的深部具有较好的找矿前景。

关键词：原位黄铁矿热电性成矿潜力招贤金矿床焦家金成矿带胶东金矿集区

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胶东西岭金矿床黄铁矿热电性特征及深部找矿意义

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黄金科学技术 2024年第2期32卷 207-219页

作者：俞炳丁正江陈伟军李肖刘彩杰薛建玲曾庆栋范宏瑞吴金检张琪彬山东省地质矿产勘查开发局第六地质大队深部金矿探测大数据应用开发山东省工程研究中心山东威海264209 西北大学大陆动力学国家重点实验室陕西西安710069 中国地质调查局发展研究中心北京100037 自然资源部矿产勘查技术指导中心北京100037 中国冶金地质总局矿产资源研究院北京101300 山东黄金地质矿产勘查有限公司山东莱州261400 中国科学院地质与地球物理研究所矿产资源研究重点实验室北京100029 中国科学院大学地球与行星科学学院北京100049

西岭金矿床位于三山岛金矿床东侧,是当前胶东金矿集区内新发现的单一矿体规模最大、埋藏最深的金矿床。在地质观察的基础上,开展了不同深度的黄铁矿热电性特征研究。结果表明:西岭金矿床黄铁矿热电系数离散范围和离散度整体较大且相对稳... 详细信息

西岭金矿床位于三山岛金矿床东侧,是当前胶东金矿集区内新发现的单一矿体规模最大、埋藏最深的金矿床。在地质观察的基础上,开展了不同深度的黄铁矿热电性特征研究。结果表明:西岭金矿床黄铁矿热电系数离散范围和离散度整体较大且相对稳定;浅部黄铁矿热电导型均为N型,而深部均为P型;成矿温度主要集中在250~360℃之间,属中—高温热液型金矿床;计算得出黄铁矿热电导型变化梯度值较小,并估算出矿体剥蚀率约为75%。综合黄铁矿各类热电性特征参数,认为西岭金矿床深部仍有较大的找矿前景,矿体最大埋深可达-3000 m标高。已知金矿体具有向NE侧伏的规律,认为沿着NE侧伏方向至-3000 m标高处是有效的深部找矿靶区位置。西岭金矿床黄铁矿热电性特征研究可为胶东地区金矿床的深部找矿预测提供科学依据。

关键词：黄铁矿热电性成矿潜力深部找矿西岭金矿床胶东半岛

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Interaction between internal solitary waves and the seafloor in the deep sea

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Deep Underground Science and Engineering 2024年第2期3卷 149-162页

作者： Zhuangcai Tian jinjian Huang Jiaming Xiang Shaotong Zhang Jinran wu Xiaolei Liu Tingting Luo Jianhua Yue State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering China University of Mining and TechnologyXuzhouChina Research Center for Deep Ocean Science and Underwater Engineering China University of Mining and TechnologyXuzhouChina Frontiers Science Center for Deep Ocean Multispheres and Earth System Key Lab of Submarine Geosciences and Prospecting TechniquesMOECollege of Marine GeosciencesOcean University of ChinaQingdaoChina Institute for Learning Sciences&Teacher Education Australian Catholic UniversityBrisbaneQueenslandAustralia Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering Ocean University of ChinaQingdaoChina Department of Chemical and Biomolecular Engineering National University of SingaporeSingaporeSingapore School of Resources and Geosciences China University of Mining and TechnologyXuzhouChina

Internal solitary wave(ISW),as a typical marine dynamic process in the deep sea,widely exists in oceans and marginal seas *** interaction between ISW and the seafloor mainly occurs in the bottom boundary *** the seabed boundary layer of the deep sea,ISW is the most important dynamic *** study analyzed the current status,hotspots,and frontiers of research on the interaction between ISW and the seafloor by *** on the action of ISW on the seabed,such as transformation and reaction,a large amount of research work and results were systematically analyzed and *** this basis,this study analyzed the wave–wave interaction and interaction between ISW and the bedform or slope of the seabed,which provided a new perspective for an in‐depth understanding of the interaction between ISW and the ***,the latest research results of the bottom boundary layer and marine engineering stability by ISW were introduced,and the unresolved problems in the current research work were *** study provides a valuable reference for further research on the hazards of ISW to marine engineering geology.

关键词： bottom boundary layer interaction internal solitary wave seafloor sediment

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Identification of a natural PLA2 inhibitor from the marine fungus Aspergillus sp.c1 for MAFLD treatment that suppressed lipotoxicity by inhibiting the IRE-1a/XBP-1s axis and JNK signaling

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Acta Pharmaceutica Sinica B 2024年第1期14卷 304-318页

作者： Yong Rao Rui Su Chenyan wu Xingxing Chai jinjian Li Guanyu Yang Junjie wu Tingting Fu Zhongping Jiang Zhikai Guo Congjun Xu Ling Huang Key Laboratory of Tropical Biological Resources of Ministry of Education School of Pharmaceutical SciencesHainan UniversityHaikou 570200China Hainan Key Laboratory of Tropical Microbe Resources Institute of Tropical Bioscience and BiotechnologyChinese Academy of Tropical Agricultural Sciences&Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan ProvinceHainan Institute for Tropical Agricultural ResourcesHaikou 571101China School of Pharmaceutical Sciences Guangdong Provincial Key Laboratory of New Drug Design and EvaluationSun Yat-sen UniversityGuangzhou 510275China Laboratory Animal Center of Guangdong Medical University Dongguan 523808China

Lipotoxicity is a pivotal factor that initiates and exacerbates liver injury and is involved in the development of metabolic-associated fatty liver disease(MAFLD).However,there are few reported lipotoxicity ***,we identified a natural anti-lipotoxicity candidate,HN-001,from the marine fungus Aspergillus ***-001 dose-and time-dependently reversed palmitic acid(PA)-induced hepatocyte *** protection was associated with IRE-1a-mediated XBP-1 splicing inhibition,which resulted in suppression of XBP-1s nuclear translocation and transcriptional *** of XBP-1s attenuated lipotoxicity,but no additional ameliorative effect of HN-001 on lipotoxicity was observed in XBP-1s knockdown ***,the ER stress and lipotoxicity amelioration was associated with *** HN-001 and the PLA2 inhibitor MAFP inhibited PLA2 activity,reduced lysophosphatidylcholine(LPC)level,subsequently ameliorated *** contrast,overexpression of PLA2 caused exacerbation of lipotoxicity and weakened the anti-lipotoxic effects of ***,HN-001 treatment suppressed the downstream pro-apoptotic JNK *** vivo,chronic administration of HN-001(i.p.)in mice alleviated all manifestations of MAFLD,including hepatic steatosis,liver injury,inflammation,and *** effects were correlated with PLA2/IRE-1a/XBP-1s axis and JNK signaling *** data indicate that HN-001 has therapeutic potential for MAFLD because it suppresses lipotoxicity,and provide a natural structural basis for developing anti-MAFLD candidates.

关键词： Lipotoxicity MAFLD ER stress IRE-1a XBP-1s JNK PLA2

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Establishment and evaluation of an improved rat model of open abdomen

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Animal Models and Experimental Medicine 2024年第4期7卷 562-569页

作者： Ye Liu Sicheng Li jinjian Huang Ze Li Kang Chen Guiwen Qu Xiuwen wu Jianan Ren School of Medicine Southeast UniversityNanjingChina Research Institute of General Surgery Affiliated Jinling HospitalMedical School of Nanjing UniversityNanjingChina

Introduction:This study aimed to establish an animal model of open abdomen(OA)through temporary abdominal closure via different ***:Adult male Sprague-Dawley rats were randomly divided into three groups:group A(OA with polypropylene mesh alone);group B(OA with polypro-pylene mesh combined with a patch);and group C(OA with polypropylene mesh and a sutured patch).Vital signs,pathophysiological changes,and survival rates were closely monitored in the rats for 7 days after *** X-rays and histopathological examinations were performed to assess abdominal organ changes and wound ***:The results showed no significant difference in mortality rates among the three groups(p>0.05).However,rats in group B exhibited superior overall condi-tion,cleaner wounds,and a higher rate of wound healing compared to the other groups(p<0.05).Abdominal X-rays indicated that varying degrees of distal intestinal obstruction in all *** examinations revealed fibrous hyperpla-sia,inflammatory cell infiltration,neovascularization,and collagen deposition in all *** B demonstrated enhanced granulation tissue generation,neovasculari-zation,and collagen deposition compared to the other groups(p<0.05).Conclusions:Polypropylene mesh combined with patches is the most suitable method for establishing an animal model of *** model successfully replicated the patho-logical and physiological changes in postoperative patients with OA,specifically the progress of abdominal skin wound *** provides a practical and reliable animal model for OA research.

关键词： animal models open abdomen patch polypropylene mesh

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仿生动态成像系统研究

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航天返回与遥感 2021年第6期42卷 82-94页

作者：杨文马居坡吴金建西安电子科技大学人工智能学院西安电子科技大学西安710071

与传统相机相比,仿生动态相机具有成像速度快、时间分辨率高、动态范围大等特性,可在极端光照条件和高速运动场景下有效生成情报信息,在无人驾驶、智慧交通、航空航天侦测等领域具有巨大的应用潜力。文章首先介绍了仿生动态视觉传感器... 详细信息

与传统相机相比,仿生动态相机具有成像速度快、时间分辨率高、动态范围大等特性,可在极端光照条件和高速运动场景下有效生成情报信息,在无人驾驶、智慧交通、航空航天侦测等领域具有巨大的应用潜力。文章首先介绍了仿生动态视觉传感器的成像原理和研究进展,然后分析了基于仿生传感器的动态成像系统及关键技术,包括从低层次的视觉(信号去噪)到高层次的视觉(识别、检测、重建)任务,最后针对仿生动态成像系统的应用情况,总结了仿生成像技术的研究挑战与发展趋势。

关键词：类脑智能异步传感器高动态范围高时间分辨率仿生动态相机成像系统技术进展

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