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Differences in and factors controlling organic matter enrichment in the Ziliujing Formation shale in the Sichuan Basin

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Petroleum Science 2024年第1期21卷 77-86页

作者： Peng Li Zhong-Bao Liu He Bi Tao Jiang Rui-kang bian Peng-Wei Wang Xiao-Yu Shang State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Efficient Development Beijing102206China Key Laboratory of Shale Oil/Gas Exploration and Production Technology SINOPECBeijing102206China Petroleum Exploration and Production Research Institute SINOPECBeijing102206China Research Institute of Petroleum Exploration and Development PetroChinaBeijing100083China Chinese Academy of Geological Sciences Beijing100037China No.4 Oil Production Plant in Daqing Oilfield Co Ltd. Daqing163511HeilongjiangChina

Lacustrine shale oil and gas are important fields for unconventional exploration and development in China,and organic-rich shale deposition lays down the critical foundation for hydrocarbon *** are two sets of shale,the Dongyuemiao and Da’anzhai Members,in the Ziliujing Formation in the Sichuan *** identify the differential enrichment characteristics of organic matter and clarify its controlling factors,geochemical analyses of organic and inorganic geochemical analyses were *** results showed that the total organic carbon content of the Dongyuemiao shale(1.36%)is slightly higher than that of the Da’anzhai shale(0.95%).The enrichment of organic matter in the two shales resulted from the comprehensive controls of paleoproductivity,paleoenvironment,and terrigenous input,but different factors have different *** addition,driven by climate,the change in the sulfate concentration in the bottom water further led to the different intensities of bacterial sulfate reduction in early *** made a great difference regarding organic matter accumulation in the two *** general,climate may have played a dominant role in organic matter enrichment in the two sets of shale.

关键词： Lacustrine shale Ziliujing Formation Sichuan Basin Enrichment mechanism of organic matter

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云计算数据中心冷却专利技术的发展现状与分析

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暖通空调 2024年第6期54卷 29-38页

作者：卞康国家知识产权局专利局北京

从云计算数据中心冷却技术的专利布局出发,对云计算数据中心冷却技术的整体发展进行了梳理,对检索到的我国专利申请的发展概况、国家区域分布、主要申请人、技术主题等进行了分析和研究。通过对主要技术主题在排名、变化趋势、国家区域... 详细信息

从云计算数据中心冷却技术的专利布局出发,对云计算数据中心冷却技术的整体发展进行了梳理,对检索到的我国专利申请的发展概况、国家区域分布、主要申请人、技术主题等进行了分析和研究。通过对主要技术主题在排名、变化趋势、国家区域技术对比及主要申请人技术对比等方面的分析,寻找云计算数据中心冷却领域的重点技术,掌握国外来华的专利布局情况,并与我国相关研发和产业情况进行对比研究,以便发现我国在该领域存在的问题、差距及未来可以优先发展的重点,同时为我国云计算数据中心冷却技术发展提供一定的建议。

关键词：云计算数据中心冷却专利节能

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Effects of interleukin-10 treated macrophages on bone marrow mesenchymal stem cells via signal transducer and activator of transcription 3 pathway

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World Journal of Stem Cells 2024年第5期16卷 560-574页

作者： Meng-Hao Lyu Ce bian Yi-Ping Dou kang Gao Jun-Ji Xu Pan Ma Department of Periodontics School of StomatologyCapital Medical UniversityBeijing 100050China Department of Orthodontics School of StomatologyCapital Medical UniversityBeijing 100050China Department of Dental Implantology School of StomatologyCapital Medical UniversityBeijing 100050China Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction School of StomatologyCapital Medical UniversityBeijing 100050China Beijing Laboratory of Oral Health Capital Medical UniversityBeijing 100050China

BACKGROUND Alveolar bone defects caused by inflammation are an urgent issue in oral implant surgery that must be *** the various phenotypes of macrophages to enhance the inflammatory environment can significantly affect the progression of diseases and tissue engineering repair *** To assess the influence of interleukin-10(IL-10)on the osteogenic differentiation of bone marrow mesenchymal stem cells(BMSCs)following their interaction with macrophages in an inflammatory *** IL-10 modulates the differentiation of peritoneal macrophages in Wistar rats in an inflammatory *** this study,we investigated its impact on the proliferation,migration,and osteogenesis of *** expression levels of signal transducer and activator of transcription 3(STAT3)and its activated form,phos-phorylated-STAT3,were examined in IL-10-stimulated ***,a specific STAT3 signaling inhibitor was used to impede STAT3 signal activation to further investigate the role of STAT3 *** IL-10-stimulated macrophages underwent polarization to the M2 type through substitution,and these M2 macrophages actively facilitated the osteogenic differentiation of ***,STAT3 signaling plays a crucial role in the process by which IL-10 influences ***,IL-10 stimulated the activation of the STAT3 signaling pathway and reduced the macrophage inflammatory response,as evidenced by its diminished impact on the osteogenic differentiation of *** Stimulating macrophages with IL-10 proved effective in improving the inflammatory environment and promoting the osteogenic differentiation of *** IL-10/STAT3 signaling pathway has emerged as a key regulator in the macrophage-mediated control of BMSCs’osteogenic differentiation.

关键词： Macrophages Interleukin-10 Bone marrow mesenchymal stem cells Signal transducer and activator of transcription 3 Inflammatory response

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柴油机DPF再生技术的发展及研究现状

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内燃机与配件 2024年第16期 143-146页

作者：韦家宝郭朋彦申杰卞宁康彭家乐谭群燕华北水利水电大学机械学院河南郑州450045

在国Ⅵ新法规中,对重型柴油机以及轻型汽车的尾气排放污染物有了更为严格的标准。尾气处理技术已经成为汽车行业满足排放法规的有效途径和必然措施。通过对国内外排放法规的对比,阐述尾气处理系统中颗粒捕集器(Diesel Particulate Filte... 详细信息

在国Ⅵ新法规中,对重型柴油机以及轻型汽车的尾气排放污染物有了更为严格的标准。尾气处理技术已经成为汽车行业满足排放法规的有效途径和必然措施。通过对国内外排放法规的对比,阐述尾气处理系统中颗粒捕集器(Diesel Particulate Filter,DPF)的核心原理,并对其再生能力进行分析总结,指出现阶段的问题及不足,从内部结构设计、材料选择及外部涂层等方面详细介绍了提升再生性能的各项措施和方案,为改善捕集性能,提高捕集效率,降低生产成本以及后续的研究发展提供有力参考。

关键词：柴油机颗粒捕集器再生性能后处理系统工作原理颗粒排放物 DPF

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基于相似度学习的多源迁移算法

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控制与决策 2017年第11期32卷 1941-1948页

作者：卞则康王士同江南大学数字媒体学院江苏无锡214122

针对与测试数据分布相同的训练数据不足,相关领域中存在大量的、与测试数据分布相近的训练数据的场景,提出一种基于相似度学习的多源迁移学习算法(SL-MSTL).该算法在经典SVM分类模型的基础上提出一种新的迁移分类模型,增加对多源域与目... 详细信息

针对与测试数据分布相同的训练数据不足,相关领域中存在大量的、与测试数据分布相近的训练数据的场景,提出一种基于相似度学习的多源迁移学习算法(SL-MSTL).该算法在经典SVM分类模型的基础上提出一种新的迁移分类模型,增加对多源域与目标域之间的相似度学习,可以有效地利用各源域中的有用信息,提高目标域的分类效果.实验的结果表明了SL-MSTL算法的有效性和实用性.

关键词：相似度学习多源域迁移学习 SVM 迁移分类

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The formation and evolutionary characteristics of organic matter and pyrites in the continental shales of the 3^(rd)submember of Chang 7 Member,Yanchang formation,Ordos Basin,China

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Energy Geoscience 2024年第2期5卷 31-39页

作者： Ruikang bian State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development Beijing 102206China Key Laboratory of Shale Oil and Gas Exploration&Production Technology SinopecBeijing 102206China SINOPEC Exploration&Production Research Institute Beijing102206China

Through microscopic analyses(e.g.,organic macerals,thin section observation,scanning electron microscope(SEM)imaging of fresh bedding planes via argon ion milling,and energy spectrum tests)combined with Rock-Eval analyses,this study systematically investigated the organic matter and pyrites in the continental shales in the 3^(rd)submember of the Chang 7 Member(Chang 7^(3)submember)in the Yanchang Formation,Ordos Basin and determined their types and the formation and evolutionary *** results are as *** organic matter of the continental shales in the Chang 7^(3)submember is dominated by amorphous bituminites and migrabitumens,which have come into being since the early diagenetic stage and middle diagenetic stage A,*** formation and transformation of organic matter is a prerequisite for the formation of *** Ordos Basin was a continental freshwater lacustrine basin and lacked sulphates in waters during the deposition of the Chang 7 ***,the syndiagenetic stage did not witness the formation of large quantities of *** the basin entered early diagenetic stage A,large quantities of sulfur ions were released as the primary organic matter got converted into bituminites and,accordingly,pyrites started to ***,this stage featured poorer fluid and spatial conditions compared with the syndepositional stage due to withdraw of water,the partial formation of bituminites,and a certain degree of *** a result,large quantities of pyrrhotite failed to transition into typical spherical framboidal pyrites but grew into euhedral monocrystal *** addition,pyrites are still visible in the migrabitumens in both microfractures and inorganic pores of mudstones and shales,indicating that the pyrite formation period can extend until the middle diagenetic stage A.

关键词： Organic matter Pyrite Formation and evolution Continental shale Chang 7^(3)submember Ordos Basin

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Long-wave instabilities

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Science China Mathematics 2024年第8期67卷 1761-1776页

作者： Dongfen bian Emmanuel Grenier School of Mathematics and Statistics Beijing Institute of TechnologyBeijing 100081China Unité de Mathématiques Pures et Appliquées CNRS UMR 5669Ecole Normale Supérieure de LyonLyon 69007France

This paper aims to give a detailed presentation of long-wave instabilities of shear layers for NavierStokes equations,and in particular to give a simple and easy-to-read presentation of the study of the OrrSommerfeld equation and to detail the analysis of its *** these analyses,we prove the existence of long-wave instabilities in the cases of slowly rotating fuids,slightly compressible fuids,or fuids with Navier boundary conditions,under smallness conditions.

关键词： Navier-Stokes equations boundary layers Prandtl equations

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水工隧洞围岩裂纹扩展的临界水压解析解

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岩土力学 2012年第8期33卷 2429-2436页

作者：卞康肖明胡田清中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室武汉430071 武汉大学水资源与水电工程科学国家重点实验室武汉430072

通过把断裂力学扩展判据引入水工隧洞解析解中,使宏观的水工隧洞受力分析与细观的围岩裂纹扩展研究相结合;将隧洞围岩裂纹分为拉剪型裂纹和压剪型裂纹,并针对不同类型裂纹的开展机制,分别推导了水工隧洞围岩拉剪型和压剪型裂纹扩展时的... 详细信息

通过把断裂力学扩展判据引入水工隧洞解析解中,使宏观的水工隧洞受力分析与细观的围岩裂纹扩展研究相结合;将隧洞围岩裂纹分为拉剪型裂纹和压剪型裂纹,并针对不同类型裂纹的开展机制,分别推导了水工隧洞围岩拉剪型和压剪型裂纹扩展时的临界内水压力表达式。在此基础上,分析了裂纹的走向、长度、埋深等参数对临界水压的影响规律。算例显示,在高内水压力作用下,或者由于地应力释放的影响,裂纹既可能发生拉剪型扩展,也可能发生压剪型扩展,但后者发生的几率更大。在内水压力控制工况下,当裂纹走向垂直于洞壁法线方向时最不容易发生扩展;裂纹长度越长,埋深越浅,围岩孔隙水的作用面积越大,裂纹发生扩展的可能性越大。

关键词：圆形隧洞水力劈裂拉剪型裂纹压剪型裂纹临界水压

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裂隙岩体高压渗透特性研究

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岩石力学与工程学报 2013年第S2期32卷 3028-3035页

作者：倪绍虎何世海汪小刚吕慷卞康中国水电工程顾问集团华东勘测设计研究院浙江杭州310014 中国水利水电科学研究院北京100038 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室湖北武汉430071

随着越来越多高水头电站、深部地下工程的建设,工程中面临更多渗透失稳风险,必须通过现场试验系统研究裂隙岩体的高压渗透特性和渗透稳定性。通过现场揭示和水–岩相互作用关系,探讨裂隙岩体的高压渗透破坏机制和破坏模式。基于多个高... 详细信息

随着越来越多高水头电站、深部地下工程的建设,工程中面临更多渗透失稳风险,必须通过现场试验系统研究裂隙岩体的高压渗透特性和渗透稳定性。通过现场揭示和水–岩相互作用关系,探讨裂隙岩体的高压渗透破坏机制和破坏模式。基于多个高水头电站中的高压压水试验和高压渗透试验成果,研究高水头压力作用下裂隙岩体的水力劈裂、渗透变形、抗冲蚀性能、渗透稳定耐久性等特性。研究成果表明,高压条件下裂隙岩体的渗透特性会发生显著改变,变化规律和特征与所作用的水压力、应力赋存环境和物质填充情况紧密相关。

关键词：岩石力学裂隙岩体高压渗透试验高压压水试验渗透特性

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Impacts of Comorbidity and Mental Shock on Organic Micropollutants in Surface Water During and After the First Wave of COVID-19 Pandemic in Wuhan (2019–2021), China

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Engineering 2024年第6期37卷 40-48页

作者： Jian Zhao Jin kang Xiaofeng Cao Rui bian Gang Liu Shengchao Hu Xinghua Wu Chong Li Dianchang Wang Weixiao Qi Cunrui Huang Huijuan Liu Jiuhui Qu Center for Water and Ecology State Key Joint Laboratory of Environment Simulation and Pollution ControlSchool of EnvironmentTsinghua UniversityBeijing 100084China Hubei Provincial Research Institute of Environmental Science Wuhan 430072China Key Laboratory of Drinking Water Science and Technology Research Centre for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Sanitary Engineering Department of Water ManagementFaculty of Civil Engineering and GeosciencesDelft University of TechnologyDelft 2600 GAThe Netherlands China Three Gorges Corporation Wuhan 430010China Vanke School of Public Health Tsinghua UniversityBeijing 100084China

The first pandemic wave of coronavirus disease 2019(COVID-19)induced a considerable increase in several antivirals and antibiotics in surface *** common symptoms of COVID-19 are viral and bacterial infections,while comorbidities(e.g.,hypertension and diabetes)and mental shock(e.g.,insomnia and anxiety)are ***,little is known about the long-term impacts of comorbidities and mental shock on organic micropollutants(OMPs)in surface ***,we monitored 114 OMPs in surface water and wastewater treatment plants(WWTPs)in Wuhan,China,between 2019 and *** pandemic-induced OMP pollution in surface water was confirmed by significant increases in 26 OMP *** increases in four antihypertensives and one diabetic drug suggest that the treatment of comorbidities may induce OMP ***,cotinine(a metabolite of nicotine)increased 155 times to 187 ngL1,which might be associated with increased ***,the increases in zolpidem and sulpiride might be the result of worsened insomnia and ***,it is reasonable to note that mental-health protecting drugs/behavior also contributed to OMP *** the observed OMPs,telmisartan,lopinavir,and ritonavir were associated with significantly higher ecological risks because of their limited WWTP-removal rate and high *** study provides new insights into the effects of comorbidities and mental shock on OMPs in surface water during a pandemic and highlights the need to monitor the fate of related pharmaceuticals in the aquatic environment and to improve their removal efficiencies in WWTPs。

关键词： Coronavirus disease 2019 Comorbidities Mental shock Micropollutant Surface water

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