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凝析油中金刚烷类和硫代金刚烷类化合物同步检测方法及地质意义---以塔里木盆地塔中地区凝析油为例

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石油实验地质 2021年第5期43卷 906-914页

作者：房忱琛翟佳胡国艺龚德瑜中国石油天然气股份有限公司勘探开发研究院北京100083 中国矿业大学(北京)煤炭资源与安全开采国家重点实验室北京100083 中国矿业大学(北京)地球科学与测绘工程学院北京100083

原油中的金刚烷类和硫代金刚烷类化合物具有相似的类金刚石笼状结构,可以反映地质过程中的热裂解作用和热化学硫酸盐还原反应(TSR)作用,因此两者的同步检出,不仅可以提高样品的分析测试效率和硫代金刚烷类化合物的定量结果准确性,还可... 详细信息

原油中的金刚烷类和硫代金刚烷类化合物具有相似的类金刚石笼状结构,可以反映地质过程中的热裂解作用和热化学硫酸盐还原反应(TSR)作用,因此两者的同步检出,不仅可以提高样品的分析测试效率和硫代金刚烷类化合物的定量结果准确性,还可以为样品提供更加可靠和广泛的地球化学分析解释。该文利用气相色谱—三重四级杆串联质谱仪(GC-MS-MS),确定了目标化合物的母离子和子离子、扫描时间、碰撞能等仪器参数,建立了塔里木盆地塔中地区凝析油中金刚烷类化合物和硫代金刚烷类化合物的同步定量检测方法,并通过定量检测结果发现,塔中地区金刚烷类化合物的含量虽有差异,但是成熟度相近,都处于过成熟阶段,且部分样品曾经历过TSR作用。

关键词：金刚烷类化合物硫代金刚烷类化合物成熟度热化学硫酸盐还原反应(TSR) 塔中地区塔里木盆地

Time-of-flight resolved stimulated Raman scattering microscopy using counter-propagating ultraslow Bessel light bullets generation

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Light(Science & Applications) 2024年第7期13卷 1427-1440页

作者： Shulang Lin Li gong Zhiwei Huang Optical Bioimaging Laboratory Department of Biomedical EngineeringCollege of Design and EngineeringNational University of SingaporeSingapore 117576Singapore

We present a novel time-of-flight resolved Bessel light bullet-enabled stimulated Raman scattering(B2-SRS)microscopy for deeper tissue 3D chemical imaging with high resolution without a need for mechanical *** accomplish the tasks,we conceive a unique method to enable optical sectioning by generating the counterpropagating pump and Stokes Bessel light bullets in the sample,in which the group velocities of the Bessel light bullets are made ultraslow(e.g.,vg≈0.1c)and tunable by introducing programmable angular dispersions with a spatial light *** theoretically analyze the working principle of the collinear multicolor Bessel light bullet generations and velocity controls with the relative time-of-flight resolved detection for SRS 3D deep tissue *** have also built the B2-SRS imaging system and present the first demonstration of B2-SRS microscopy with Bessel light bullets for 3D chemical imaging in a variety of samples(e.g.,polymer bead phantoms,biological samples such as spring onion tissue and porcine brain)with high *** B2-SRS technique provides a>2-fold improvement in imaging depth in porcine brain tissue compared to conventional SRS *** method of optical sectioning in tissue using counter-propagating ultraslow Bessel light bullets developed in B2-SRS is generic and easy to perform and can be readily extended to other nonlinear optical imaging modalities to advance 3D microscopic imaging in biological and biomedical systems and beyond.

关键词： Bessel resolved propagating

Even Search in a Promising Region for Constrained Multi-Objective Optimization

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IEEE/CAA Journal of Automatica Sinica 2024年第2期11卷 474-486页

作者： Fei Ming Wenyin gong Yaochu Jin School of Computer Science China University of GeosciencesWuhan 430074China IEEE Faculty of Technology Bielefeld UniversityNorth Rhine-Westphalia 33619Germany School of Engineering Westlake UniversityHangzhou 310030China

In recent years, a large number of approaches to constrained multi-objective optimization problems(CMOPs) have been proposed, focusing on developing tweaked strategies and techniques for handling constraints. However, an overly finetuned strategy or technique might overfit some problem types,resulting in a lack of versatility. In this article, we propose a generic search strategy that performs an even search in a promising region. The promising region, determined by obtained feasible non-dominated solutions, possesses two general ***, the constrained Pareto front(CPF) is included in the promising region. Second, as the number of feasible solutions increases or the convergence performance(i.e., approximation to the CPF) of these solutions improves, the promising region shrinks. Then we develop a new strategy named even search,which utilizes the non-dominated solutions to accelerate convergence and escape from local optima, and the feasible solutions under a constraint relaxation condition to exploit and detect feasible regions. Finally, a diversity measure is adopted to make sure that the individuals in the population evenly cover the valuable areas in the promising region. Experimental results on 45 instances from four benchmark test suites and 14 real-world CMOPs have demonstrated that searching evenly in the promising region can achieve competitive performance and excellent versatility compared to 11 most state-of-the-art methods tailored for CMOPs.

关键词： Constrained multi-objective optimization even search evolutionary algorithms promising region real-world problems

Secure Tracking Control via Fixed-Time Convergent Reinforcement Learning for a UAV CPS

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IEEE/CAA Journal of Automatica Sinica 2024年第7期11卷 1699-1701页

作者： Zhenyu gong Feisheng Yang the School of Automation Northwestern Polytechnical UniversityXi’an 710129 the Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518063China

Dear Editor,This letter is concerned with the secure tracking control problem in the unmanned aerial vehicle(UAV) system by fixed-time convergent reinforcement learning(RL). By virtue of the zero-sum game,the false da... 详细信息

关键词： Secure Fixed false

准噶尔盆地大中型气田(藏)形成条件与勘探方向

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石油勘探与开发 2020年第2期47卷 247-259页

作者：胡素云王小军曹正林李建忠龚德瑜徐洋中国石油勘探开发研究院北京100083 中国石油新疆油田公司新疆克拉玛依834000 中国石油杭州地质研究院杭州310023

准噶尔盆地现有勘探结果呈现出'油多气少'的特点,与天然气地质条件不匹配。基于主力气源灶分析、天然气地质条件与控藏要素评价,认为准噶尔盆地具备大中型气田(藏)形成基本条件,未来天然气勘探应关注3大重点领域与勘探方向:①石炭系火山... 详细信息

准噶尔盆地现有勘探结果呈现出'油多气少'的特点,与天然气地质条件不匹配。基于主力气源灶分析、天然气地质条件与控藏要素评价,认为准噶尔盆地具备大中型气田(藏)形成基本条件,未来天然气勘探应关注3大重点领域与勘探方向:①石炭系火山岩,东北、东南和西北3大活动陆缘均发育石炭系残余生烃凹陷和规模火山岩储集层,火山岩储集层与上乌尔禾组湖泛泥岩配置形成优质储盖组合,控制天然气聚集,存在滴南凸起带、东部隆起带和中拐凸起带3大有利勘探方向;②南缘下组合发育成排成带的构造圈闭,保存完整,圈源时空配置好,多套有效碎屑岩储集层与超压泥岩盖层配置形成有利储盖组合,是侏罗系大中型煤型气田(藏)勘探有利方向,南缘中东段7大构造圈闭是近期探索的重点目标;③中央坳陷带发育玛湖、沙湾和阜康等大型生烃凹陷,烃源岩埋深大,热演化程度高,是寻找二叠系高—过成熟天然气田(藏)的有利方向,存在深大构造和大型构造-岩性两类勘探目标。建议立足3大含气系统,围绕3大重点领域,按3个层次加快盆地天然气勘探步伐。

关键词：准噶尔盆地天然气勘探石炭系火山岩南缘下组合中央坳陷带

Some Rotundities of Orlicz–Lorentz Spaces

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Acta Mathematica Sinica,English Series 2024年第8期40卷 1893-1919页

作者： Wan Zhong gong Peng WANG Department of Mathematics Anhui Normal UniversityWuhu 241000P.R.China

K-UR,K-LUR and K-R are the generalizations of UR,LUR and R respectively,which are of great significance in Banach space *** in Orlicz–Lorentz function spaceΛ_(ϕ,ω)^(◦)[0,γ)equipped with the Orlicz norm,the research methods of K-UR,K-LUR and K-R are much more complicated than those of UR,LUR and *** this paper we obtain some criteria of K-UR,K-LUR and K-R ofΛ_(ϕ,ω)^(◦)[0,γ)by means of the norm of dual space and H_(μ)property ofΛ_(ϕ,ω)^(◦)[0,γ).

关键词： Orlicz-Lorentz space Orlicz norm k-uniform rotundity locally k-uniform rotundity krotundity

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中国大气田的地质和地球化学若干特征

石油勘探与开发 2014年第1期41卷 1-13页

作者：戴金星于聪黄士鹏龚德瑜吴伟房忱琛刘丹中国石油勘探开发研究院

通过地质、地球化学等分析,对中国大气田的地质和地球化学若干特征进行了总结。截至2011年底,中国共发现48个大气田,探明地质总储量占全国天然气探明储量的81.5%。中国大气田的主要地质和地球化学特征有:①天然气组分以烷烃气为主,甲烷... 详细信息

通过地质、地球化学等分析,对中国大气田的地质和地球化学若干特征进行了总结。截至2011年底,中国共发现48个大气田,探明地质总储量占全国天然气探明储量的81.5%。中国大气田的主要地质和地球化学特征有:①天然气组分以烷烃气为主,甲烷平均含量88.22%,乙烷、丙烷和丁烷平均含量分别为3.31%、0.97%和0.49%;②大气田天然气类型以煤成气为主,48个大气田中有27个为煤成气田;③储集层的层系和岩类多,其中二叠系和三叠系发现的储量最多;主要储存在砂岩、碳酸盐岩和火山岩中,砂岩中的储量最高;④致密砂岩大气田起举足轻重作用,48个大气田中有16个为致密砂岩大气田;⑤"晚期成藏"和"超晚期成藏",晚期成藏有利于天然气的保存从而有利于发现大气田;⑥气藏类型多,有构造、岩性和地层3类。

关键词：中国大气田地质特征地球化学特征煤成气油型气

Plasma-assisted ammonia synthesis under mild conditions for hydrogen and electricity storage:Mechanisms,pathways,and application prospects

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Frontiers in Energy 2024年第4期18卷 418-435页

作者： Feng gong Yuhang JING Rui XIAO Key Laboratory of Energy Thermal Conversion and Process Measurement and Control of the Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 210096China

Ammonia,with its high hydrogen storage density of 17.7 wt.%(mass fraction),cleanliness,efficiency,and renewability,presents itself as a promising zero-carbon ***,the traditional Haber−Bosch(H−B)process for ammonia synthesis necessitates high temperature and pressure,resulting in over 420 million tons of carbon dioxide emissions annually,and relies on fossil fuel *** contrast,dielectric barrier discharge(DBD)plasma-assisted ammonia synthesis operates at low temperatures and atmospheric pressures,utilizing nitrogen and hydrogen radicals excited by energetic electrons,offering a potential alternative to the H−B *** method can be effectively coupled with renewable energy sources(such as solar and wind)for environmentally friendly,distributed,and efficient ammonia *** review delves into a comprehensive analysis of the low-temperature DBD plasma-assisted ammonia synthesis technology at atmospheric pressure,covering the reaction pathway,mechanism,and catalyst system involved in plasma nitrogen *** from current research,it evaluates the economic feasibility of the DBD plasmaassisted ammonia synthesis technology,analyzes existing dilemmas and challenges,and provides insights and recommendations for the future of nonthermal plasma ammonia processes.

关键词： plasma catalysis nitrogen fixation ammonia synthesis hydrogen storage catalyst carbon neutralization

Projections of summer light rain frequency in typical terrain over eastern China under wind speed constraint

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Science China Earth Sciences 2024年第6期67卷 1885-1894页

作者： Xuechen DONG Daoyi gong Cuicui SHI Institute of Disaster Risk Science Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China Key Laboratory of Environmental Change and Natural Disaster MOEFaculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China School of National Safety and Emergency Management Beijing Normal UniversityBeijing 100875China School of Systems Science Beijing Normal UniversityBeijing 100875China

The variation in near-surface wind speed is a key dynamic parameter in the orographic effect of precipitation over eastern *** this study,we used the latest high-resolution outputs from six GCMs in CMIP6-HighResMIP to evaluate the performance of high-resolution models in simulating the orographic precipitation characteristics of typical mountainous areas in summer over eastern *** orographic precipitation under warming scenarios was projected and constrained according to observational *** results indicated that during the contemporary climate reference period(1979-2009),although the relationship between model-simulated near-surface wind speed and orographic light rain frequency was consistently stable,the sensitivity of the orographic light rain frequency to surface wind variability was generally underestimated,with a deviation approximately 24.1% lower than the observational *** estimated orographic light rain frequency corrected based on the observed near-surface wind speed under a 1.5℃ warming scenario,was 36.1% lower than that of the contemporary period;this reduction was 8.6 times that without the wind speed constraint(4.2%).The MRI-AGCM3-2-S model,with a longer dataset,demonstrated relatively stable reductions in orographic light rain frequency under different warming scenarios(1.5℃,2℃,3℃,and 4℃)after the application of wind speed *** all cases,the reductions exceeded those for the predictions made without the wind speed constraint.

关键词： Frequency of orographic light rain HighResMIP High-resolution projection Observational constraint Eastern China