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保压密闭取芯技术在ST1井的应用

西部探矿工程 2023年第8期35卷 25-28,33页

作者：卢宝斌郑锋于国伟谢梦宇渤海钻探工程技术研究院天津300450 冀东油田勘探开发建设工程事业河北唐山063200 长城钻探工程技术研究院辽宁盘锦124010

青海油田风险探井ST1井钻探目的在于探索三湖地区未成岩泥岩气领域勘探潜力,评价其岩芯在地层原始压力状态下油、气、水含量,同时开展各项分析化验建立泥岩气评价标准,对于涩北气田勘探潜能有重要意义。针对涩北气田取芯井段地层疏松、... 详细信息

青海油田风险探井ST1井钻探目的在于探索三湖地区未成岩泥岩气领域勘探潜力,评价其岩芯在地层原始压力状态下油、气、水含量,同时开展各项分析化验建立泥岩气评价标准,对于涩北气田勘探潜能有重要意义。针对涩北气田取芯井段地层疏松、泥岩发育,取芯收获率保障难度大,设计了新型保压密闭取芯工具,并优化了取芯施工参数,使其更能适应油页岩地层。在保证岩芯收获率、保压率的前提下,缩短了作业周期。

关键词：保压取芯工具取芯收获率风险探井 ST1井

Protein acetylation sites with complex-valued polynomial model

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Frontiers of Computer Science 2024年第3期18卷 217-226页

作者： Wenzheng bao bin YANG School of Information Engineering Xuzhou University of TechnologyXuzhou 221018China School of Information Science and Engineering Zaozhuang UniversityZaozhuang 277160China

Protein acetylation refers to a process of adding acetyl groups(CH3CO-)to lysine residues on protein *** one of the most commonly used protein post-translational modifications,lysine acetylation plays an important role in different *** our study,we developed a humanspecific method which uses a cascade classifier of complexvalued polynomial model(CVPM),combined with sequence and structural feature descriptors to solve the problem of imbalance between positive and negative *** gene expression programming and differential evolution are utilized to search the optimal CVPM *** also made a systematic and comprehensive analysis of the acetylation data and the prediction *** performances of our proposed method are 79.15%in Sp,78.17%in Sn,78.66%in ACC 78.76%in F1,and 0.5733 in MCC,which performs better than other state-of-the-art methods.

关键词： protein acetylation complex-valued polynomial model machine learning

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水力振荡器盘阀尺寸优选方法

西部探矿工程 2020年第12期32卷 49-50,55页

作者：王建龙刘学松刘烁卢宝斌郑锋中国石油渤海钻探工程有限公司工程技术研究院天津300280

水力振荡器通过自身振动降低钻柱与井壁间的摩阻,有效缓解滑动钻进托压问题,提高滑动钻进钻压传递效率。现场应用时,需要优选合适的阀盘尺寸,以满足设备和井下需求。水力振荡器阀盘尺寸的大小受井深、钻井液排量、钻井液性能、循环系统... 详细信息

水力振荡器通过自身振动降低钻柱与井壁间的摩阻,有效缓解滑动钻进托压问题,提高滑动钻进钻压传递效率。现场应用时,需要优选合适的阀盘尺寸,以满足设备和井下需求。水力振荡器阀盘尺寸的大小受井深、钻井液排量、钻井液性能、循环系统压耗、钻井泵额定工作压力等因素影响。提出了一种水力振荡器阀盘尺寸优选方法,并进行了实施例分析,为水力振荡器现场应用提供理论依据。

关键词：水力振荡器托压盘阀尺寸

Numerical evaluation of tandem rotor for highly loaded transonic fan

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航空动力学报 2011年第6期26卷 1352-1361页

作者： ZHAO bin LIU bao-jie School of Jet Propulsion Beijing University of Aeronautics and Astronautics Beijing 100191 China

Transonic tandem rotor was designed for highly loaded fan at a corrected tip speed of 381 m/s and another conventional rotor was designed as a baseline to evaluate the loading superiority of tandem rotor with three-dimensional(3-D) numerical *** aft blade solidity and its impact on total loading level were studied in *** result indicates that tandem rotor has potential to achieve higher loading level and attain favorable aerodynamic performance in a wide range of loading coefficient 0.55~0.68,comparing with the conventional rotor which produced a total pressure ratio of 2.0 and loading coefficient of 0.42.

关键词： transonic fan tandem rotor highly loaded loading coefficient numerical simulation

Axonal microRNAs： localization, function and regulatory mechanism during axon development

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Journal of Molecular Cell Biology 2017年第2期9卷 82-90页

作者： bin Wang Lan bao State Key Laboratory of Cell Biology CAS Center for Excellence in Molecular Cell Science Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 200031 China School of Life Science and Technology ShanghaiTech University Shanghai 201210 China

Subcellular localization and translation of messenger RNAs are essential for the regulation of neuronal development and synaptic function. As post-transcriptional regulators, microRNAs （miRNAs） have been emerging as central players in the development and maturation of the nervous system. Recent discoveries reveal the critical functions of miRNAs in the axon of neurons via multiple pathways of molecular regulation. Here, we introduce methods for isolating axonal miRNAs and review recent findings on the localization and function as well as regulatory mechanism of axonal miRNAs during axon development.

关键词： axonal miRNA compartmentalized culture axon development RNA-binding protein

Simulated moving bed separation of tocopherol homologues:simulation and experiments

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第5期10卷 758-766页

作者： Yu-bin lu bao-gen SU Yi-wen YANG Qi-long REN Ping-dong WU National Laboratory of Secondary Resources Chemical Engineering Zhejiang University Hangzhou 310027 China Hangzhou Zhongmei Huadong Pharmaceutical Co. Ltd. Hangzhou 310011 China

Chromatograms of tocopherol homologues were obtained by a column of analytical size (inner diameter (ID) 0.46 cm cm×10 cm) packed with silica gel. Adsorption isotherms and film mass-transfer coefficient were estimated from the chroma-tograms by using a general rate model, which considers axial dispersion, external mass-transfer and intraparticle diffusion. Based on the obtained isotherms and mass-transfer coefficient, the separation process of tocopherol homologues on simulated moving bed (SMB) was simulated using the same model. According to the simulated results, a mixture of α-, γ-, δ-tocopherols and other impurities was separated on an SMB equipment. The SMB equipment was composed of 8 columns of ID 2 cm×10 cm, with 2 columns in each section. The solid phase was silica gel, and the mobile phase was n-hexane/2-propanol (99/1 by volume). γ-and δ-tocopherols of purity greater than 98% were obtained with recovery greater than 98%. The effects of operating conditions (flow rates and switching time) on the performance of SMB were studied by both simulation and experiments. It was found that all the simulation results were quite close to the experimental results. We conclude that process development and optimization of operating conditions of SMB by simulation are feasible.

关键词： Simulated moving bed (SMB) Separation Modeling Simulation Tocopherol homologues

Van der Waals heterostructure engineering by 2D space-confinement for advanced potassium-ion storage

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Nano Research 2021年第11期14卷 3854-3863页

作者： Bi luo Peng Wu Jiafeng Zhang Liang Cao Chunhui Wang bin lu bao Zhang Xing Ou National Engineering Laboratory for High Efficiency Recovery of Refractory Nonferrous Metals School of Metallurgy and EnvironmentCentral South UniversityChangsha410083China Key Laboratory on Fuel Cell Technology of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou510641China Institute of Advanced Magnetic Materials College of Materials&Environmental EngineeringHangzhou Dianzi UniversityHangzhou310018China

Molybdenum disulfide (MoS_(2)) has received enormous attentions in the electrochemical energy storage due to its unique two-dimensional layered structure and relatively high reversible capacity. However, the application of MoS_(2) in potassium-ion batteries (PIBs) is restricted by poor rate capability and cyclability, which are associated with the sluggish reaction kinetics and the huge volume expansion during K+ intercalation. Herein, we propose a two-dimensional (2D) space confined strategy to construct van der Waals heterostructure for superior PIB anode, in which the MoS_(2) nanosheets can be well dispersed on reduced graphene oxide nanosheets by leveraging the confinement effect within the graphene layers and amorphous carbon. The strong synergistic effects in 2D van der Waals heterostructure can extremely promote the electron transportation and ions diffusion during K+ insertion/extraction. More significantly, the 2D space-confinement effect and van der Waals force inhibit polysulfide conversion product dissolution into the electrolyte, which significantly strengthens the structural durability during the long-term cycling process. As anticipated, the as-synthesized the “face-to-face” C/MoS_(2)/G anode delivers remarkable K-storage performance, especially for high reversible capacity (362.5 mAh·g^(-1) at 0.1 A·g^(-1)), excellent rate capability (195.4 mAh·g^(-1) at 10 Ag^(-1)) and superior ultrahigh-rate long-cycling stability (126.4 mAh·g^(-1) after 4000 cycles at high rate of 5 A·g^(-1)). This work presents a promise strategy of structure designing and composition optimization for 2D layered materials in advanced energy storage application.

关键词： van der Waals heterostructure space confinement molybdenum disulfide anode materials potassium-ion batteries

Visible-Light-Driven Four-Component Radical Relay Aminocarbonylation of Unactivated Alkenes

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Chinese Journal of Chemistry 2024年第9期42卷 990-996页

作者： bin lu Feng-Shuo bao Zi-Wei He Wen-Jing Xiao Jia-Rong Chen Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction College of ChemistryCentralChina Normal University152 Luoyu RoadWuhanHubei 430079China Wuhan Institute of Photochemistry and Technology 7North Bingang RoadWuhanHubei 430083China Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province Gannan Normal UniversityGanzhouJiangxi 341000China

Catalytic four-component radical carbonylation of unactivated alkenes has recently been recognized as a robust protocol for rapid construction of various structurally diverse carbonyl *** the significance of fluorine-containing groups,this reaction class has been extensively applied to assembly of a variety of perfluoroalkyl carboxylic acid derivatives by transition metal ***,we report a visible-light-driven radical relay 1,2-perfluoroalkylation aminocarbonylation of unactivated alkenes using CO gas as carbonyl source and 4CzIPN as organic photocatalyst.A wide range of alkenes and amines were well tolerated,providing the valuableβ-perfluoroalkylated amides with generally good yields and high chemoselectivity.

关键词： Visible light Photoredox catalysis Radical aminocarbonylation Multicomponent reaction Carbon monoxide Unactivated alkenes AmidesIReactionmechanisms

Derivation and analysis on the analytical structure of interval type-2 fuzzy controller with two nonlinear fuzzy sets for each input variable

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Frontiers of Information Technology & Electronic Engineering 2016年第6期17卷 587-602页

作者： bin-bin LEI Xue-chao DUAN Hong bao Qian XU MOE Key Laboratory of Electronic Equipment Structure Design Xidian University Xinjiang Observatory National Astronomical ObservatoriesChinese Academy of Sciences

Type-2 fuzzy controllers have been mostly viewed as black-box function generators. Revealing the analytical structure of any type-2 fuzzy controller is important as it will deepen our understanding of how and why a type-2 fuzzy controller functions and lay a foundation for more rigorous system analysis and design. In this study, we derive and analyze the analytical structure of an interval type-2 fuzzy controller that uses the following identical elements: two nonlinear interval type-2 input fuzzy sets for each variable, four interval type-2 singleton output fuzzy sets, a Zadeh AND operator, and the Karnik-Mendel type reducer. Through dividing the input space of the interval type-2 fuzzy controller into 15 partitions, the input-output relationship for each local region is derived. Our derivation shows explicitly that the controller is approximately equivalent to a nonlinear proportional integral or proportional differential controller with variable gains. Furthermore, by comparing with the analytical structure of its type-1 counterpart, potential advantages of the interval type-2 fuzzy controller are analyzed. Finally, the reliability of the analysis results and the effectiveness of the interval type-2 fuzzy controller are verified by a simulation and an experiment.

关键词： Interval type-2 fuzzy controller Analytical structure Karnik-Mendel type reducer