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Optimization of production well patterns for natural gas hydrate reservoir: Referring to the results from production tests and numerical simulations

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China Geology 2025年第1期8卷 39-57页

作者： Lang-feng Mu Hao-tian Liu Chi Zhang Yi Zhang hai-long lu School of Earth and Space Sciences Peking UniversityBeijing 100871China Beijing International Center for Gas Hydrate School of Earth and Space SciencesPeking UniversityBeijing 100871China Chinese Academy of Geological Sciences China Geological SurveyMinistry of Natural Resources Beijing 100037China College of Engineering Peking UniversityBeijing 100871China National Engineering Research Center of Natural Gas Hydrate Exploration and Development Guangzhou 511458China China National Oil and Gas Exploration and Development LTD Corporation Petro-ChinaBeijing 100034China

Natural gas hydrate is a clean energy source with substantial resource *** contrast to conventional oil and gas,natural gas hydrate exists as a multi-phase system consisting of solids,liquids,and gases,which presents unique challenges and complicates the mechanisms of seepage and *** domestic and international natural gas hydrate production tests typically employ a single-well production *** this approach has seen some success,it continues to be hindered by low production rates and short production ***,there is an urgent need to explore a new well network to significantly increase the production of a single *** paper provides a comprehensive review of the latest advancements in natural gas hydrate research,including both laboratory studies and field *** further examines the gas production processes and development outcomes for single wells,dual wells,multi-branch wells,and multi-well systems under conditions of depressurization,thermal injection,and CO_(2) *** this basis,well types and well networks suitable for commercial exploitation of natural gas hydrate were explored,and the technical direction of natural gas hydrate development was *** study shows that fully exploiting the flexibility of complex structural wells and designing a well network compatible with the reservoir is the key to improving production from a single ***,multi-well joint exploitation is identified as an effective strategy for achieving large-scale,efficient development of natural gas hydrate.

关键词： Gas Hydrate Production Depressurization Heat Injection Replacement Multi-Branch Well Well patterns Hydrate exploration engineering

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Bistable switch molecule DPACdCl_(4) showing four physical channels and high phase transition temperature

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Chinese Chemical Letters 2025年第1期36卷 591-596页

作者： Ying-Yu Zhang Jia-Qi luo Yan Han Wan-Ying Zhang Yi Zhang hai-Feng lu Da-Wei Fu Institute for Science and Applications of Molecular Ferroelectrics Key Laboratory of the Ministry of Education for Advanced Catalysis MaterialsZhejiang Normal UniversityJinhua 321004China Ordered Matter Science Research Center Jiangsu Key Laboratory for Science and applications of Molecular FerroelectricsSoutheast UniversityNanjing 211189China

Multiple switchable physical channels within one material or device,encompassing optical,electrical,thermal,and mechanical pathways,can enable multifunctionality in mechanical-thermal-opto-electronic *** integrated encryption and enhanced performance in storage and sensing presents a formidable challenge in the synthesis and functionality of new *** an effort to overcome the complexities associated with these multiple physical functions,this study investigates the large-size crystal of DPACdCl_(4)(DPA=diisopropylammonium),revealing significant features in rare multi-channel *** compound demonstrates the ability to switch between"OFF/0"and"ON/1"states in the mechanical-thermal-opto-electronic ***,DPACd Cl_(4)possesses four switchable physical channels,characterized by a higher phase transition temperature of 440.7 K and a competitive piezo-electric coefficient of 46 pC/***,solid-state NMR analysis indicates that thermally activated molecular vibrations significantly contribute to its multifunctional switching capabilities.

关键词： Organic-inorganic hybrid Phase transition Crystal Perovskite Piezoelectricity

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重视儿童早发性高度近视眼致盲性并发症的管理

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中华眼科杂志 2025年第1期61卷 7-11页

作者：焦永红卢海麻婧米雪景首都医科大学附属北京同仁医院北京同仁眼科中心、北京市眼科研究所、北京市眼科学与视觉科学重点实验室北京100730

儿童早发性高度近视眼(eoHM)是发生在学龄前儿童的高度近视眼,在影响视觉发育过程的同时,还可引发视网膜裂孔和脱离、后巩膜葡萄肿等一系列并发症,不仅损伤视功能,而且延缓患儿的整体发展,因此早期预防、早期诊断、及时治疗和长期管理... 详细信息

儿童早发性高度近视眼(eoHM)是发生在学龄前儿童的高度近视眼,在影响视觉发育过程的同时,还可引发视网膜裂孔和脱离、后巩膜葡萄肿等一系列并发症,不仅损伤视功能,而且延缓患儿的整体发展,因此早期预防、早期诊断、及时治疗和长期管理至关重要。本文在阐述儿童eoHM致盲性并发症管理必要性的基础上,指出与管理相关的若干要点,以期引起临床高度重视,并为临床开展相关工作提供指导意见。

关键词：近视并发症盲早期医疗干预病人医护管理

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生慧颗粒促进BDNF/TrkB信号通路改善阿尔茨海默病斑马鱼认知功能

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中国中西医结合杂志 2025年第1期45卷 83-89页

作者：陈雨萌鲁海菲王平湖北中医药大学中医学院武汉430061 湖北中医药大学老年医学研究所武汉430070 湖北中医药大学教育部老年脑健康中医药防护技术与新产品研发工程中心武汉430070

目的观察生慧颗粒对脑源性神经营养因子(BDNF)/酪氨酸蛋白激酶B(TrkB)信号通路的影响,探讨其改善阿尔茨海默病(AD)斑马鱼认知功能的机制。方法选取12月龄野生型AB系雄性斑马鱼75尾,随机分为空白组、模型组、多奈哌齐组、生慧颗粒低剂量... 详细信息

目的观察生慧颗粒对脑源性神经营养因子(BDNF)/酪氨酸蛋白激酶B(TrkB)信号通路的影响,探讨其改善阿尔茨海默病(AD)斑马鱼认知功能的机制。方法选取12月龄野生型AB系雄性斑马鱼75尾,随机分为空白组、模型组、多奈哌齐组、生慧颗粒低剂量组、生慧颗粒高剂量组,每组15尾。除空白组外,其余各组用三氯化铝(AlCl3)浸泡给药30日建立AD模型,造模结束后空白组和模型组给于常规水养鱼,多奈哌齐组和生慧颗粒组分别给予多奈哌齐药液(0.25 mg/mL)和生慧颗粒药液(1.48、2.95 mg/mL),采用浸泡法,连续给药14日。应用T迷宫检测斑马鱼学习记忆能力,透射电镜观察脑部超微结构的改变,实时荧光定量PCR检测脑组织BDNF、TrkB、cAMP反应元件结合蛋白(CREB)mRNA表达,Western Bot检测斑马鱼脑BDNF、TrkB、CREB蛋白表达水平。结果与空白组比较,模型组斑马鱼进入营养富集(EC)区潜伏时间增加(P<0.01,P<0.05)。模型组神经元结构破坏,形态不规则,核膜破裂,线粒体肿胀或空泡化,嵴排列不规则或断裂。模型组BDNF、CREB、TrkB mRNA及蛋白表达降低(P<0.01,P<0.05)。与模型组比较,生慧颗粒组斑马鱼进入EC区潜伏时间缩短(P<0.01,P<0.05),BDNF、CREB、TrkB mRNA及蛋白表达增加(P<0.05),神经元结构改善。结论生慧颗粒促进BDNF/TrkB信号通路减轻AD斑马鱼的神经元损伤以改善认知功能。

关键词：生慧颗粒阿尔茨海默病斑马鱼 BDNF/TrkB信号通路中药复方中西医结合

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基于双层博弈的多能源网络协同规划方法

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中国电力 2025年第1期58卷 93-99页

作者：陆海张浩陈晓云周苏洋云南电网有限责任公司电力科学研究院云南昆明650011 东南大学电气工程学院江苏南京210096

综合能源系统中多主体利益冲突日益加剧,增加了系统规划建模的难度。在综合能源系统研究中,将系统划分为能源供应商、综合能源站和用户主体,并结合主从博弈与合作博弈理论,建立了适用于多主体的综合能源系统双层博弈规划模型,提出相应... 详细信息

综合能源系统中多主体利益冲突日益加剧,增加了系统规划建模的难度。在综合能源系统研究中,将系统划分为能源供应商、综合能源站和用户主体,并结合主从博弈与合作博弈理论,建立了适用于多主体的综合能源系统双层博弈规划模型,提出相应求解方法,并通过仿真算例验证了所提方法的有效性。

关键词：综合能源系统多主体博弈双层规划

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3D quantum Hall effect

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National Science Review 2019年第2期6卷 208-210页

作者： hai-Zhou lu Shenzhen Institute for Quantum Science and Engineering and Department of Physics Southern University of Science and Technology (SUSTech) Shenzhen Key Laboratory of Quantum Science and Engineering

The discovery of the quantum Hall effect in 2D systems opens the door to topological phases of matter. A quantum Hall effect in three dimensions is a long-sought phase of matter and has inspired many efforts and claim... 详细信息

关键词： In quantum Hall effect

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Preparation and Properties of Organically Modified Sepiolite/High-performance Epoxy Nanocomposites

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Chinese Journal of Aeronautics 2006年第B12期19卷 41-46页

作者： lu hai-jun Aerospace Institute of Special Materials and Technology Beifing 100074 China

Fibrous organic sepiolites （OSEP） and novel epoxy/OSEP nanocomposites were prepared, and different methods were investigated to produce an intercalated/exfoliated structure of OSEP. Experimental results show that the modifier molecules can be easily adsorbed by the sepiolite, but the layer space （d001 of the sepiolite, linked by means of covalent bond, remains unchanged. A proper method to solve this problem appears to exert large shearing force on the original sepiolite followed by its organic modification （OSEP2）. The morphology observation shows that there are formed an even dispersion of nano-sized OSEP2 fibers in epoxy resin and a structure intercalated by epoxy molecules, which lead to significantly improved mechanical properties. Impact strength of the epoxy/OSEP2 nanocomposite increases from 32.1 kJ/m^2 to 44.4 kJ/m^2, 38.3% higher than that of pristine matrix with 3 wt% OSEP2 content. It is also noted that the flexural strength of the OSEP/epoxy composites has risen by about 3% higher than that of the pure epoxy resin.

关键词： sepiolite intercalation/exfoliation epoxy nanocomposites

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Quantum transport in topological semimetals under magnetic fields (Ⅱ)

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Frontiers of physics 2019年第3期14卷 1-24页

作者： hai-Peng Sun hai-Zhou lu Department of Physics Harbin Institute of Technology Harbin 150001 China Shenzhen Institute for Quantum Science and Engineering and Department of Physics Southern University of Science and Technology Shenzhen 518055 China Shenzhen Key Laboratory of Quantum Science and Engineering Shenzhen 518055 China

We review our recent works on the quantum transport, mainly in topological semimetals and also in topological insulators, organized according to the strength of the magnetic field. At weak magnetic fields, we explain the negative magnetoresistance in topological semimetals and topological insulators by using the semiclassical equations of motion with the nontrivial Berry curvature. We show that the negative magnetoresistance can exist without the chiral anomaly. At strong magnetic fields, we establish theories for the quantum oscillations in topological Weyl, Dirac, and nodal-line semimetals. We propose a new mechanism of 3D quantum Hall effect, via the "wormhole" tunneling through the Weyl orbit formed by the Fermi arcs and Weyl nodes in topological semimetals. In the quantum limit at extremely strong magnetic fields, we find that an unexpected Hall resistance reversal can be understood in terms of the Weyl fermion annihilation. Additionally, in parallel magnetic fields, longitudinal resistance dips in the quantum limit can serve as signatures for topological insulators.

关键词： topological semimetai topological insulator quantum oscillation negative magne to resistance quantum Hall effect

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Quantum transport in topological semimetals under magnetic fields (III)

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Frontiers of physics 2023年第2期18卷 63-87页

作者： Lei Shi hai-Zhou lu Shenzhen Institute for Quantum Science and Engineering and Department of Physics Southern University of Science and TechnologyShenzhen 518055China Shenzhen Key Laboratory of Quantum Science and Engineering Shenzhen 518055China

We review our most recent research on quantum transport,organizing the review according to the intensity of the magnetic field and focus mostly on topological semimetals and topological *** first describe the phenomenon of quantum transport when a magnetic field is not *** introduce the nonlinear Hall effect and its theoretical ***,we discuss Coulomb instabilities in 3D higher-order topological ***,we pay close attention to the surface states and find a function to identify the axion insulator in the antiferromagnetic topological insulator *** weak magnetic fields,we focus on the decaying Majorana oscillations which has the correlation with spin−orbit *** the section on strong magnetic fields,we study the helical edge states and the one-sided hinge states of the Fermi-arc mechanism,which are relevant to the quantum Hall *** extremely large magnetic fields,we derive a theoretical explanation of the negative magnetoresistance without a chiral ***,we show how magnetic responses can be used to detect relativistic ***,we introduce the 3D quantum Hall effect’s charge-density wave mechanism and compare it with the theory of 3D transitions between metal and insulator driven by magnetic fields.

关键词： topological semimetal topological insulator axion insulator nonlinear Hall effect(NHE) quantum oscillation quantum Hall effect(QHE) charge density wave(CDW)

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Experimental Study on the Influence of Cross-Section Type of Marine Cable Conductors on the Bending Performance

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China Ocean Engineering 2022年第4期36卷 629-637页

作者： YAN Jun HU hai-tao lu hai-long YIN Yuan-chao BU Yu-feng lu Qing-zhen State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering MechanicsInter-national Research Center for Computational MechanicsDalian University of TechnologyDalian 116024China Ningbo Research Institute of Dalian University of Technology Ningbo 315016China State Key Laboratory of Structural Analysis for Industrial Equipment School of Ocean Science and TechnologyDalian University of TechnologyPanjin 124221China

Through the development of marine energy,marine cables are the key equipment for transmission of electrical energy between surface platforms and underwater *** failure is a critical failure mode of marine *** bending performance of the cable conductor has a major influence on both bending and fatigue performances of the overall cable *** study the influence of different types of the conductor cross-section on the bending performances of marine cable conductors,three types of copper conductors with the same cross-sectional area,i.e.,noncompressed round,compressed round,and shaped wire conductors,were *** experimental results demonstrated that the cross-section type significantly affects the bending performances of copper *** particular,the bending stiffness of the shaped wire conductor is the highest among the three conductor *** key evaluation parameters,i.e.,the bending stiffness,maximum bending moment,envelope area,and engineering critical slip point,were selected to compare and analyze the bending hysteresis curves of the three copper *** differences in the key evaluation parameters were analyzed based on the structural dimensional parameters,processing methods,and classical bending stiffness theoretical models of the three copper conductor *** results provide an important theoretical guidance for the structural design and engineering applications of marine cable conductors.

关键词： marine cable conductors cross-section type bending performance theoretical model bending test

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