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A study on geological structure prediction based on random forest method

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Artificial Intelligence in Geosciences 2022年第1期3卷 226-236页

作者： Zhen Chen Qingsong Wu Sipeng Han Jungui Zhang Peng Yang xingwu liu School of Earth Sciences and Resources China University of Geosciences(Beijing)Beijing100083China Applied Geology Research Center China Geological SurveyChengdu610036China

The Xingmeng orogenic belt is located in the eastern section of the Central Asian orogenic belt,which is one of the key areas to study the formation and evolution of the Central Asian orogenic *** present,there is a huge controversy over the closure time of the Paleo-Asian Ocean in the Xingmeng orogenic *** of the reasons is that the genetic tectonic setting of the Carboniferous volcanic rocks is not *** to the diversity of volcanic rock geochemical characteristics and its related interpretations,there are two different views on the tectonic setting of Carboniferous volcanic rocks in the Xingmeng orogenic belt:island arc and continental *** recent years,it is one of the important development directions in the application of geological big data technology to analyze geochemical data based on machine learning methods and further infer the tectonic background of *** paper systematically collects Carboniferous basic rock data from Dongwuqi area of Inner Mongolia,Keyouzhongqi area of Inner Mongolia and Beishan area in the southern section of the Central Asian Orogenic *** forest algorithm is used for training sets of major elements and trace elements in global island arc basalt and rift basalt,and then the trained model is used to predict the tectonic setting of the Carboniferous magmatic rock samples in the Xingmeng orogenic *** prediction results shows that the island arc probability of most of the research samples is between 0.65 and 1,which indicates that the island arc tectonic setting is more *** this paper,it is concluded that magmatism in the Beishan area of the southern part of the Central Asian Orogenic belt in the Early Carboniferous may have formed in the heyday of subduction,while the Xingmeng orogenic belt in the Late Carboniferous may have been in the late subduction stage to the collision or even the early rifting *** temporal and spatial evolution shows that the subduction of the Paleo-Asian Ocean is

关键词： Geological big data Basic rock Tectonic environment discrimination Random forest

Atomically Dispersed Pt and NiO Clusters Synergistically Enhanced C–O Bond Hydrogenolysis

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CCS Chemistry 2024年第3期6卷 709-718页

作者： Junjuan Yang Sen Luan Minghua Dong Yuxuan Wu Xueqing Xing xingwu liu Junfeng Xiang Zhijuan Zhao Shaopeng Li Bin Zhang Huizhen liu Buxing Han Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Colloid and Interface and ThermodynamicsInstitute of ChemistryChinese Academy of SciencesBeijing 100190 School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049 Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsBeijing 100049 National Energy Center for Coal to Liquids Synfuels China Co.Ltd.Huairou DistrictBeijing 101400 Center for Physicochemical Analysis and Measurement Institute of ChemistryChinese Academy of SciencesBeijing 100190 Physical Science Laboratory Huairou National Comprehensive Science CenterUniversity of Chinese Academy of SciencesBeijing 100049

C–Obond activation is a highly efficient,fundamental strategy in the depolymerization and hydrodeoxygenation of chemicals with oxygen-containing functional groups such as oil,coal,and *** efficient catalysts for C–Oactivation with ultralow-loading noble and non-noble metals is highly desirable for the improvement of metal atomic ***,bimetallic catalysts with atomically dispersed Pt and NiO clusters on different supports were fabricated,and the prepared Pt^(δ+)-NiO/Nb_(2)O_(5)and Pt^(δ+)-NiO/TiO_(2)showed outstanding activity for the hydrogenolysis of benzyl phenyl ether with>99%yield of phenol and toluene due to the excellent cooperation of atomically dispersed Pt and NiO *** synergy mechanism between Pt and Ni and their respective roles in the bimetallic catalyst for C–O hydrogenolysis were clearly *** findings deepen our understanding of the synergy of the two active components and are expected to provide new design concepts for the development of multicomponents catalysts.

关键词： bimetallic catalysis synergistic effect C-O bond activation hydrogenolysis hydrogen spillover

微细浸染状金矿化与脉状金-锑矿化关系:西秦岭阳山金矿带例析

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岩石学报 2018年第5期34卷 1312-1326页

作者：李楠张志超刘兴武刘基中国地质大学地质过程与矿产资源国家重点实验室北京100083

阳山是西秦岭金矿带已探明金储量最大的独立金矿,金矿化主要呈微细浸染状分布于千枚岩和花岗质岩脉中,锑矿化主要分布于花岗质岩脉与千枚岩接触带的石英±方解石脉中,是研究微细浸染状金矿化与脉状金-锑矿化的时间、空间和成因关系的理... 详细信息

阳山是西秦岭金矿带已探明金储量最大的独立金矿,金矿化主要呈微细浸染状分布于千枚岩和花岗质岩脉中,锑矿化主要分布于花岗质岩脉与千枚岩接触带的石英±方解石脉中,是研究微细浸染状金矿化与脉状金-锑矿化的时间、空间和成因关系的理想选区。成矿主阶段微细浸染状黄铁矿-毒砂矿化已有大量研究,而晚阶段脉状金-锑矿化特征及其与主阶段微细浸染状金矿化关系尚待查明。论文系统研究了成矿晚阶段流体包裹体组合特征、辉锑矿及石英的矿物学、稀土和微量元素特征,并与成矿主阶段进行对比,以期理清阳山金矿带金矿化与锑矿化的关系。流体包裹体组合显微测温结果显示,成矿晚阶段流体均一温度为271.3～288.3℃,具有中低温、低盐度、富Cl和CO_2、还原性的变质流体来源的特征,与成矿主阶段一致。辉锑矿呈轻稀土富集、重稀土亏损的"右倾式"稀土配分模式,并可见中-弱的Eu负异常和强的Ce负异常,与千枚岩和花岗质岩脉的稀土元素配分模式相似。辉锑矿富含Ag、Au、As等微量元素,与赋矿围岩中这些元素的高背景值有关。结合硫化物硫同位素数据,指示阳山金矿带成矿物质来源可能为赋矿的千枚岩和花岗质岩脉:在区域构造抬升引发的退变质过程中,千枚岩和花岗质岩脉发生变质脱挥发分作用,释放出金等成矿物质。金矿化与锑矿化贯穿整个成矿作用,随着成矿温度、压力的变化,以及成矿流体成分的演化,成矿早、主阶段以微细浸染状含金硫化物为主,发育位置较深,成矿晚阶段以自然金-辉锑矿脉为主,发育位置较浅,在矿带尺度上符合造山型金矿地壳连续成矿模式的垂向分布规律。本文查明了阳山金矿带微细浸染状金矿化与脉状金-锑矿化的关系,明确其为造山型金矿浅成金-锑矿化,并在此基础上提出了找矿方向,为西秦岭及其他地区类似金矿床的理论研究与找矿勘探提供了有益参考。

关键词：辉锑矿流体包裹体组合稀土元素微量元素阳山金矿带造山型金矿

Adjacent Pt Nanoparticles and Sub-nanometer WO_(x)Clusters Determine Catalytic Isomerization of C_(7)H_(16)

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CCS Chemistry 2022年第8期4卷 2639-2650页

作者： Bin Zhang Wei Zhou Jie Zhang Zirui Gao Danyang Cheng Lipeng Tang xingwu liu Yueqin Song Chunyang Dong Yao Xu Jie Yan Mi Peng Huizhen liu Mark Douthwaite Meng Wang Ding Ma Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering and College of Engineeringand BIC-ESATPeking UniversityBeijing 100871 Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Colloid and Interface and ThermodynamicsInstitute of ChemistryChinese Academy of SciencesBeijing 100190 Petroleum Processing Research Center East China University of Science and TechnologyShanghai 200237 Cardiff Catalysis Institute School of ChemistryCardiff UniversityCardiff CF103AT

Processes for the isomerization of light alkanes have been commercialized;however,the isomerization of paraffins(C_(n)H_(2n+2),n≥7)remains a *** mesoporous tungsten-zirconia catalyst supported Pt catalysts(Pt/WZrOx),initial isomerization productivity of 5249 moli-C7/molPt/h was obtained for n-heptane reforming at 275°C and 5 bar of hydrogen.

关键词： WOx monolayers metal–acid catalysis proximity bifunctional catalysis acid quantification

阳山金矿带金的赋存状态及其对成矿过程的指示意义

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地学前缘 2019年第5期26卷 84-95页

作者：李楠邓军张志超刘兴武刘基中国地质大学地质过程与矿产资源国家重点实验室北京100083 北京矿产地质研究院北京100012

阳山金矿带是西秦岭金矿带已探明金储量最大的独立金矿区,其矿化样式主要为微细浸染状矿化,其次为石英脉型矿化,可见金与"不可见金"均有发育,该金矿带是研究造山型金矿金赋存状态的理想地区,其研究成果对理解金成矿作用和过程以及指导... 详细信息

阳山金矿带是西秦岭金矿带已探明金储量最大的独立金矿区,其矿化样式主要为微细浸染状矿化,其次为石英脉型矿化,可见金与"不可见金"均有发育,该金矿带是研究造山型金矿金赋存状态的理想地区,其研究成果对理解金成矿作用和过程以及指导选矿工艺具有重要意义。论文在翔实的野外地质调查和显微观察基础上,将成矿期划分为早阶段(黄铁矿-石英)、主阶段(黄铁矿-毒砂-绢云母-石英)和晚阶段(辉锑矿-石英-方解石),综合应用电子探针、激光剥蚀电感耦合等离子体质谱、电感耦合等离子质谱仪、高分辨率透射电镜、X射线粉晶衍射等技术,剖析阳山金矿带不同成矿阶段金的赋存状态,进而探讨其对成矿过程的指示意义。研究表明:成矿早、主阶段以微细浸染状硫化物矿化为主,金主要以晶格金的形式赋存于黄铁矿和毒砂中;而成矿晚阶段以脉状矿化为主,金主要以自然金的形式存在。金的赋存状态的变化,指示从成矿早阶段到晚阶段,成矿温度、压力逐渐降低,成矿流体成分由富As流体演化为相对贫As且富Sb的流体。

关键词：金的赋存状态激光剥蚀电感耦合等离子体质谱高分辨率透射电镜 X射线粉晶衍射阳山西秦岭

An Integrated Carbon Dioxide Capture and Methanation Process

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CCS Chemistry 2024年第5期6卷 1174-1183页

作者： Xiaochen Zhang Mengzhu Li xingwu liu Ang Li Yuchen Deng Mi Peng Yu Zhang Charlotte Vogt Matteo Monai Junxian Gao Xuetao Qin Yao Xu Qiaolin Yu Meng Wang Guofu Wang Zheng Jiang Xiaodong Han Casper Brady Wei-Xue Li Wu Zhou Jin-Xun liu Bingjun Xu Bert M.Weckhuysen Ding Ma Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871 China Academy of Aerospace Science and Innovation Beijing 100088 National Energy Center for Coal to Liquids Synfuels China Co.Ltd.Beijing 101400 Beijing Key Laboratory of Microstructure and Property of Advanced Materials Beijing University of TechnologyBeijing Inorganic Chemistry and Catalysis group Institute for Sustainable and Circular Chemistry and Debye Institute for Nanomaterials ScienceFaculty of ScienceUtrecht University3584 CG Utrecht State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001 Shanghai Synchrotron Radiation Facility Zhangjiang LadShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210 Center for Catalytic Science and Technology University of DelawareNewarkDelaware 19716 Key Laboratory of Precision and Intelligent Chemistry School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui 230026 Hefei National Laboratory University of Science and Technology of ChinaHefei 230088 School of Physical Sciences CAS Key Laboratory of Vacuum PhysicsUniversity of Chinese Academy of SciencesBeijing 100049

Reducing the ever-growing level of CO_(2)in the atmosphere is critical for the sustainable development of human society in the context of global *** of the capture and upgrading of CO_(2)is,therefore,highly desirable since each process step is costly,both energetically and ***,we report a CO_(2)direct air capture(DAC)and fixation process that produces *** concentrations of CO_(2)(∼400 ppm)in the air are captured by an aqueous solution of sodium hydroxide to form *** carbonate is subsequently hydrogenated to methane,which is easily separated from the reaction system,catalyzed by TiO2-supported Ru in the aqueous phase with a selectivity of 99.9%among gas-phase *** concurrent regenerated hydroxide,in turn,increases the alkalinity of the aqueous solution for further CO_(2)capture,thereby enabling this one-ofits-kind continuous CO_(2)capture and methanation *** simulations demonstrate the energy feasibility of this CO_(2)DAC and methanation process,highlighting its promise for potential largescale applications.

关键词： CO_(2)capture and methanation process sodium hydroxide carbonate Ru/TiO_(2) catalytic mechanism CO_(2)activation and hydrogenation

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基于水平集的钢轨焊缝区域定位方法

应用科学学报 2021年第2期39卷 281-292页

作者：刘星武熊邦书廖峰陈新云南昌航空大学江西省图像处理与模式识别重点实验室江西南昌330063 中航工业洪都飞机设计研究所江西南昌330024 中航通飞研究院有限公司广东珠海519040

针对现有钢轨焊缝错边量测量方法在不同光照环境下适应能力不强、定位精度不高、稳定性不好的问题,提出了基于水平集的钢轨焊缝区域定位方法。首先,采用水平集对预处理后的焊缝图像进行轮廓分割,将焊缝与轨腰、轨头和背景进行分离;其次... 详细信息

针对现有钢轨焊缝错边量测量方法在不同光照环境下适应能力不强、定位精度不高、稳定性不好的问题,提出了基于水平集的钢轨焊缝区域定位方法。首先,采用水平集对预处理后的焊缝图像进行轮廓分割,将焊缝与轨腰、轨头和背景进行分离;其次,采用面积排序和连通域相结合的方法排除轮廓干扰,实现焊缝轮廓的粗定位;再次,采用两次排序法实现焊缝轮廓的精定位;最后,对焊缝轮廓中横坐标采用排序法实现钢轨焊缝区域的自动定位。通过模拟不同的光照环境,对60 kg/m钢轨焊缝区域进行定位实验,验证了该方法具有适应能力强、精度高和稳定性好的优点,可用于焊轨基地焊缝错边量的自动检测。

关键词：钢轨焊缝自动定位水平集焊缝区域排序法

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1999年运载火箭发展动态

导弹与航天运载技术 2000年第1期 62-70页

作者：刘兴武北京长征科技信息研究所北京100076

主要对１９９９年国外在运载火箭发展动态方面的重大事件进行了回顾，对２０００年运载火箭的发展趋势进行了展望。

关键词：运载火箭发展动态 1999年美国俄罗斯日本

弥散张量成像辅助复杂颅内肿瘤手术的研究进展

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中华神经医学杂志 2020年第10期19卷 1075-1079页

作者：刘星吾法志强何骁征张世忠国家临床重点专科教育部工程技术研究中心广东省脑功能修复与再生重点实验室南方医科大学珠江医院神经外科广州510282

弥散张量成像(DTI)作为神经影像学研究的一种重要技术,能够反映颅内神经纤维束的结构变化,3D重建神经纤维束走行以及提供神经纤维束与颅内肿瘤之间的解剖毗邻信息。DTI的应用不仅可以指导临床医生优化手术路线,减少重要神经纤维束的损... 详细信息

弥散张量成像(DTI)作为神经影像学研究的一种重要技术,能够反映颅内神经纤维束的结构变化,3D重建神经纤维束走行以及提供神经纤维束与颅内肿瘤之间的解剖毗邻信息。DTI的应用不仅可以指导临床医生优化手术路线,减少重要神经纤维束的损伤、提高肿瘤的全切率,同时还可以在一定程度上评估患者手术风险和术后疗效。笔者现按照颅内肿瘤所在的不同区域和累及的不同神经纤维束进行分类,逐一分析DTI对不同部位复杂颅内肿瘤手术的辅助作用,并对DTI应用的优势与不足进行总结,以期为今后复杂颅内肿瘤的手术提供参考依据。

关键词：颅内肿瘤弥散张量成像神经纤维束