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Geochemical Characteristics and Hydrocarbon Generation Modeling of the Paleocene Source Rocks in the Jiaojiang Sag,East China Sea Basin

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Journal of Earth Science 2024年第2期35卷 642-654页

作者： Chuang Lei shiyan Yin Jiaren Ye Jingfu Wu Zhaosheng wang Bin Gao Collaborative Innovation Center of Green Development and Ecological Restoration of Mineral Resources North China University of Science and TechnologyTangshan063210China Key Laboratory of Tectonics and Petroleum Resources China University of GeosciencesMinistry of EducationWuhan430074China CNOOC Research Institute Ltd Beijing100028China

Jiaojiang sag in the East China Sea Basin is at the earlier exploration stage,where characterizing hydrocarbon generation of source rocks is important to understand oil-gas exploration *** geochemical and basin modeling analysis,hydrocarbon generation capacity and process of the Paleocene E_(1)y,E_(1)l and E_(1)m formations were *** show that E_(1)y and E_(1)l mudstones are high-quality source rocks with Type Ⅱ kerogen,which is dominated by both aquatic organisms and terrestrial higher plants deposited in sub-reduced environment.E_(1)m mudstone interbedded with thin carbonaceous mudstone and coal is poor-quality source rock with Type Ⅲ kerogen,whose organic matter was originated from terrestrial higher plants under oxidized *** by burial and maturity histories,E_(1)y and E_(1)l source rocks experienced two hydrocarbon generation stages,which took place in the Late Paleocene and in the Middle to Late Eocene,respectively,and had high hydrocarbon generation capacity with cumulative hydrocarbon volume of 363 and 328 mg/g,respectively.E_(1)m source rock only had one hydrocarbon generation process in the Late Eocene,which had low hydrocarbon generation capacity with cumulative hydrocarbon volume of only 24 mg/*** future oil-gas exploration in the Jiaojiang sag should focus on hydrocarbon generation center and select targets in the central uplift formed before the Miocene with high-quality traps.

关键词： East China Sea Basin Jiaojiang sag source rock geochemical characteristics hydrocarbon generation basin modeling petroleum geology

Nb-and Ta-doped(Hf,Zr,Ti)C multicomponent carbides with enhanced oxidation resistance at 2500℃

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Journal of Advanced Ceramics 2024年第3期13卷 332-344页

作者： shiyan Chen Jinming wang Zhaoke Chen Weilong Song Yi Zeng Xingchao Li Tongqi Li Xiang Xiong State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Aerospace Research Institute of Materials&Processing Technology China Academy of Launch Vehicle TechnologyBeijing 100076China

Enhancing oxidation resistance of multicomponent carbides above 2000℃is critical for their thermal protection *** this purpose,novel Nb-and Ta-doped(Hf,Zr,Ti)C multicomponent carbides were designed to improve their oxidation resistance at 2500℃.The results demonstrated that Nb and Ta doping reduced the oxidation rate constant by 16.67%and 25.17%,respectively,thereby significantly improving the oxidation resistance of(Hf,Zr,Ti)*** enhancement was attributed to the changes in oxycarbide composition and distribution within the oxide layer by adding Nb and *** to the different oxidation tendencies of the constituent elements,a distinctive structure was formed in which(Hf,Zr)O_(2)served as a skeleton,and various oxycarbides were dispersed throughout the oxide *** doped Nb and Ta were retained within oxycarbides,retarding the diffusion of oxygen into the *** importantly,the addition of Nb and Ta reduced the size of oxycarbides,decreasing both size and quantity of the pores in the oxide layer and facilitating the formation of a more effective oxygen barrier.

关键词： (Hf,Zr,Ti)C oxidation behaviour ultra-high-temperature oxidation Nb and Ta doping oxycarbides

某三级甲等综合医院门诊药房中成药药品说明书信息标注情况分析

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中国药业 2024年第10期33卷 16-20页

作者：杜雅丽胡晨吉何璐璐郭毅高洋洋王世燕樊萍四川大学华西医院临床药学部四川成都610041

目的完善医院门诊药房中成药药品说明书的信息标注,促进临床合理用药。方法通过医院信息系统收集某三级甲等(简称三甲)综合医院门诊药房83种中成药的药品说明书,参照相关法规、指南等分析各项目信息标注情况。结果83份药品说明书中,非... 详细信息

目的完善医院门诊药房中成药药品说明书的信息标注,促进临床合理用药。方法通过医院信息系统收集某三级甲等(简称三甲)综合医院门诊药房83种中成药的药品说明书,参照相关法规、指南等分析各项目信息标注情况。结果83份药品说明书中,非处方药中除11份未标注警示语外,其余各项目均标注完整;处方药药品说明书【药品名称】【成分】【性状】【功能主治】【规格】等17项内容均标注完整,【药代动力学】【老年患者用药】【儿童用药】【孕妇及哺乳期妇女用药】【药物相互作用】等7项有缺项。结论该院门诊药房使用的中成药药品说明书信息标注存在缺项严重、表述模糊、界定不清的情况,建议相关部门加强对中成药药品说明书的管理,督促药品上市许可持有人进行修改和完善,以保障临床用药安全。

关键词：三级甲等综合医院门诊药房中成药药品说明书信息标注用药安全合理用药

Zircon U-Pb geochronology of tuffite beds in the Baishugou Formation:Constraints on the revision of Ectasian System at the southern margin of the North China Craton

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Science China Earth Sciences 2020年第11期63卷 1817-1830页

作者： Xiyan ZHU shiyan wang Wenbo SU Taiping ZHAO Lanyin PANG Mingguo ZHAI Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing 100029China Henan Institute of Geological Survey Zhengzhou 450001China School of Earth Sciences and Resources China University of Geosciences(Beijing)Beijing 100083China Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China University of Chinese Academy of Sciences Beijing 100049China

The Xiamaling Formation of 1.4–1.35 Ga in Jixian Section and adjoining areas represents a unique Ectasian Period(Mesoproterozoic)sedimentary sequence in the North China Craton(NCC).Studies carried out during the last decade have contributed significantly in improving our understanding about the Ectasian sedimentation tectonics in the NCC during this transitional interval between the breakup of Supercontinent Columbia and the assembly of *** present study reports,for the first time,tuffite beds interlayered with carbonaceous-siliceous slate-phyllite in the upper Baishugou Formation(western Henan Province),at the southern margin of *** LA-MC-ICPMS U-Pb geochronology of zircons from two tuffite samples has yielded almost identical ages of 1330±10 Ma(MSWD=0.43,N=38)and 1332±10 Ma(MSWD=0.90,N=24),that constrain a 1.33 Ga depositional age(Ectasian Period)for the Baishugou Formation.A close similarity in lithological characteristics and their respective superimposed lithostratigraphic relationships of the Baishugou and Xiamaling formations,underline a comparable depositional environment for *** high-precision geochronology data on the Baishugou Formation would stimulate a relook into the Meso-Neoproterozoic chronostratigraphic framework of the NCC,and further research would lead to a comprehensive understanding of the geological evolution of the NCC during Ectasian Period and its correlation with analogous global events.

关键词： Tuffite Baishugou Formation Zircon U-Pb ages Ectasian Period North China Craton(NCC)

Selective catalytic reduction failure of low NH_(3)-NO_(x) ratio

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Chinese Journal of Chemical Engineering 2021年第4期34卷 231-240页

作者： Piqiang Tan Xiaoyu Li shiyan wang Zhiyuan Hu Diming Lou School of Automobile Studies Tongji UniversityShanghai 201804China

An insufficient amount of NH_(3) (ammonia)will reduce the conversion efficiency of NO_(x),which may lead to excess NO_(x) emissions,resulting in NH3SCR *** this article,SCR failure caused by a low NH_(3)NO_(x) ratio is studied systematically by *** main reasons for a low NH_(3)NO_(x) ratio in SCR include insufficient urea injection,hydrothermal aging of catalysts and urea *** was found from an insufficient urea injection experiment that with the increase of NH_(3)NO_(x) ratio,the NO_(x) conversion efficiency of the SCR system increased,but the ammonia leakage also *** main influencing factors of NO_(x) conversion efficiency are different under different NH3NOx ratios.A flow reactor system was used in the catalyst hydrothermal aging experiment to investigate the effect of hydrothermal aging on catalyst *** a 24 h hydrothermal aging experiment at 800℃,the NO_(x) conversion efficiency of the copperbased zeolite catalysts decreased significantly at the boundary of medium and low temperature *** the NO_(2)-NO_(x) ratio in the mixture had a significant effect on the catalytic *** coupled to Fourier transform infrared spectroscopy(TGFTIR)was used to analyze the composition of urea deposits in a urea deposits analysis *** was found that the main components of urea deposits were urea and isocyanic acid(HNCO).Preventing HNCO polymerization,especially the formation of CYA,can decrease the formation of urea deposits.

关键词： SCR Low NH_(3)-NO_(x)ratio Purification Hydrothermal Urea crystallization

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远程教务管理信息系统设计

仪器仪表学报 2005年第Z1期26卷 562-564页

作者：王世燕北京邮电大学信息网络中心北京100876

系统(北京邮电大学远程教育教务信息管理系统)主要负责远程教育系统中的教务数据库管理。系统实现了各省与中心的数据交换。即省教务员只负责管理本省的教务,省教务员把数据传输给中心,中心的数据也可以传输给省,省经过处理后,与中心的... 详细信息

系统(北京邮电大学远程教育教务信息管理系统)主要负责远程教育系统中的教务数据库管理。系统实现了各省与中心的数据交换。即省教务员只负责管理本省的教务,省教务员把数据传输给中心,中心的数据也可以传输给省,省经过处理后,与中心的数据达到了同步;中心可以更新SQL数据库数据,学生和教师可以通过WEB查询和维护数据。

关键词：远程教务数据库设计

Metagenomics analysis identifies oral Streptococcus as potential biomarkers for nasopharyngeal carcinoma

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Journal of Genetics and Genomics 2024年第3期51卷 363-366页

作者： Yanmin Liu Chengtao wang Lixiang Xie Shuling Du Li Ding Ying Cui Runzhi Chen Jingxiang Zhang Wan wang Xi Liu Yan wang shiyan Chen Tian Tan Qiaochu Zhao Limei Yin Chunwei Li Yong Chen Tao Ding Department of Immunology and Microbiology Zhongshan School of MedicineSun Yat-sen UniversityGuangzhouGuangdong 510080China Key Laboratory of Tropical Disease Control(Sun Yat-sen University) Ministry of EducationGuangzhouGuangdong 510080China Department of Radiation Oncology The First Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdong 510080China Department of Infectious Diseases The Fifth Affiliated HospitalSun Yat-sen UniversityZhuhaiGuangdong 519000China Department of Endocrinology&Metabolism The Fifth Affiliated HospitalSun Yat-sen UniversityZhuhaiGuangdong 519000China Department of Otolaryngology The First Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdong 510080China

Nasopharyngeal carcinoma(NPC)is a malignancy originating from the nasopharyngeal epithelial *** some studies have identified potential biomarkers for early diagnosis of NPC based on metabolomics data(Chen et al.,2023;Zhou et al.,2023)and Epstein-Barr virus subtypes(Xu et al.,2019),their effectiveness and applicability need further investigation,particularly when consideringthe roles of oral microbiota.

关键词： al. nasopharyngeal diagnosis

华北克拉通南缘中元古代早期杂色页岩的古环境指示意义

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岩石学报 2022年第6期38卷 1713-1726页

作者：左鹏飞祝禧艳郑德顺孙风波王世炎河南理工大学资源环境学院焦作454000 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 中国科学院地质与地球物理研究所中国科学院矿产资源研究重点实验室北京100029 河南省地质调查院郑州450001

中元古代大气氧含量是否有变化以及何时、如何变化的,目前是尚不清楚、存有争议的热点问题。细碎屑岩常被认为可反映其沉积时的水体环境,是记录古海洋氧化还原信息的重要载体。华北克拉通自18亿年之后,处于多期裂解的陆内伸展环境,发育... 详细信息

中元古代大气氧含量是否有变化以及何时、如何变化的,目前是尚不清楚、存有争议的热点问题。细碎屑岩常被认为可反映其沉积时的水体环境,是记录古海洋氧化还原信息的重要载体。华北克拉通自18亿年之后,处于多期裂解的陆内伸展环境,发育一系列泥页岩,其中华北克拉通南缘崔庄组(~1648Ma)泥页岩沉积于陆棚-浅海环境。本次研究选取该组杂色页岩作为研究对象,扫描电镜和粉晶衍射结果显示,绿色和紫红色页岩主要矿物包括伊利石、石英、长石,还包含了云母、绿泥石、赤铁矿。赤铁矿分布在云母内部和绿泥石边缘,指示其来自于矿物蚀变。两种页岩中的伊利石均以纤维状分布在长石、石英和云母碎屑粒间孔隙,且主要为1M型,指示其经历了浅成岩作用。紫红色页岩与绿色页岩相比,剖面上风化程度较高。主量元素显示,两种页岩的源岩都经历明显的钾化作用,经过钾校正之后,风化指数(CIA)约为80~85,说明物源区经历强烈的风化作用。同时,全铁含量与澳大利亚后太古代页岩和北美页岩相似,铁并无明显富集,指示铁可能是陆源输入。稀土元素与澳大利亚后太古代相比明显Eu异常,无明显Ce异常,而过渡金属元素(V、Cr、Co、Ni)无显著富集,其比值显示该套页岩沉积于氧化的水体中。结合该时期海洋分层模型,推测中元古代早期浅海陆棚海水已出现氧化。黏土质泥页岩在该时期广泛发育,均指示陆壳风化作用强烈,该过程可能影响和控制氧气含量的变化。

关键词：黑色岩系华北克拉通中元古代氧化事件

Discussion　on　the　physics　phenomena　and　the　mechanism　of　forming　weld　joint　in　the　process　of　copper－stainless　steel　friction　welding

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China Welding 1995年第1期4卷 19-27页

作者： Shi Kai(Xi’an Petroleum Institute)wang shiyan Qiu Fengxiang and Xia Wei(Xi’an Jiao Tong University)

The physics phenomena of copper and stainless steel in the process of forming friction welding joint are recorded and observed by the interrupted test *** test shows that the butt friction welding process of copper and stainless steel bar can be divided into three stages approximately: the adhesion at the beginning friction stage, the friction inside the copper and the plastic ring expansion, and the friction on the bound surface of copper-stainless steel and in stainless steel. During the process,the friction surface was transformed twice.

关键词： copper-stainless steel friction welding interrupted test method