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Gas liquid cylindrical cyclone flow regime identification using machine learning combined with experimental mechanism explanation

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Petroleum Science 2023年第1期20卷 540-558页

作者： Zhao-ming Yang Yu-Xuan He Qi Xiang Enrico Zio Li-Min He xiao-ming luo Huai Su Ji Wang Jin-Jun Zhang National Engineering Laboratory for Pipeline Safety/MOE Key Laboratory of Petroleum Engineering/Beijing Key Laboratory of Urban Oil and Gas Distribution Technology China University of Petroleum-Beijing102249BeijingChina MINES ParisTech PSL Research UniversityCRCSophia AntipolisFrance Dipartimento di Energia Politecnico di MilanoVia La Masa 3420156MilanoItaly College of Pipeline and Civil Engineering China University of Petroleum-East China266580QingdaoChina

The flow regimes of GLCC with horizon inlet and a vertical pipe are investigated in experiments,and the velocities and pressure drops data labeled by the corresponding flow regimes are *** with the flow regimes data of other GLCC positions from other literatures in existence,the gas and liquid superficial velocities and pressure drops are used as the input of the machine learning algorithms respectively which are applied to identify the flow *** choosing of input data types takes the availability of data for practical industry fields into consideration,and the twelve machine learning algorithms are chosen from the classical and popular algorithms in the area of classification,including the typical ensemble models,SVM,KNN,Bayesian Model and *** results of flow regimes identification show that gas and liquid superficial velocities are the ideal type of input data for the flow regimes identification by machine *** of the ensemble models can identify the flow regimes of GLCC by gas and liquid velocities with the accuracy of 0.99 and *** the pressure drops as the input of each algorithm,it is not the suitable as gas and liquid velocities,and only XGBoost and Bagging Tree can identify the GLCC flow regimes *** success and confusion of each algorithm are analyzed and explained based on the experimental phenomena of flow regimes evolution processes,the flow regimes map,and the principles of *** applicability and feasibility of each algorithm according to different types of data for GLCC flow regimes identification are proposed.

关键词： Gas liquid cylindrical cyclone Machine learning Flow regimes identification Mechanism explanation Algorithms

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SCFP, a novel fiber-specific promoter in cotton

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Chinese Science Bulletin 2008年第17期53卷 2639-2645页

作者： HOU Lei LIU Hao LI JiaBao YANG Xia xiao YueHua luo ming SONG ShuiQing YANG GuangWei PEI Yan Key Laboratory of Biotechnology and Crop Quality Improvement of the Ministry of Agriculture Biotechnology Research Center Southwest University Chongqing 400716 China

To investigate the expression pattern of GhSCFP which was isolated from cotton fiber cDNA library, a 1006 bp upstream fragment of the gene was cloned by chromosome walking and fused to GUS and GFP respectively. Histochemical GUS and GFP fluorescence analysis revealed that the expression of the report genes driven by the promoter sequence was detectable only in outer layer cells during the seed development in the transgentic tobaccos. In transgenic cotton, strong GUS activity was observed in spherical protrusions on 0 dpa (days post anthesis) ovule surface, and in the 2―36 dpa fiber cells, while no GUS signals were detected in the root, leaves, stem, corolla, anther and stigma. Our data demonstrated that GhSCFP upstream sequence is a cotton fiber-specific promoter and this promoter will be useful in the molecular research on fiber cell development and in cotton fiber improvements by genetic modification.

关键词：棉花纤维促进剂 SCFP 烟草植物生长调节剂

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Synergistically enhanced ORR and HER performance on Co-N-C coupled in-situ generated PtCo intermetallic

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Journal of Energy Chemistry 2025年第1期100卷 721-729页

作者： Guanyu luo Min Song Lulu An xiao Huang Qian Zhang Chenhao Zhang Tao Shen Shuang Wang Deli Wang Key Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology) Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology

Integrating multi-scale sites in a composite catalyst is vital to realize efficient ***,a synergistic composite catalyst consisting of Co atomic sites and in-situ generated PtCo intermetallic compounds （IMCs）(o-PtCo@CoNC) is proposed through Co pre-anchoring and subsequent impregnation-reduction *** loading of Co atoms provides a chance for in-situ generating PtCo ordered intermetallic *** remaining Co single atoms and PtCo IMCs construct synergistic electrocatalytic *** from the ordered structure,synergistic effect of Pt Co IMCs and Co single atoms,o-PtCo@CoNC exhibits excellent electrocatalytic performance for oxygen reduction reaction （ORR） and hydrogen evolution reaction （HER） with mass activity of 1.21 A mgPt-1（at 0.9 V） and5.70 A mgPt-1（at an overpotential of 100 mV）,***,o-PtCo@CoNC delivers negligible loss of half-wave potential and overpotential during long-term stability test in acid solutions,with 13 mV decay after 50,000 potential cycles for ORR and a 2.7 mV decay after 20,000 potential cycles for *** integration strategy of single-atomic sites coupled IMCs paves the way for enhancing the activity and durability of Pt-based electrocatalysts.

关键词： Electrolytic reduction

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四腔室液压缸（英文）

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机床与液压 2016年第24期44卷 27-31页

作者：吴晓明骆倩李欣燕山大学机械工程学院河北秦皇岛066004

传统液压控制系统中,普通液压缸在变负载工况下会产生较大的压力波动。针对该情况,设计了四腔室液压缸。通过将活塞杆做成空腔兼做另一缸体的形式,把普通的两腔室液压缸做成具有4个腔室的液压缸。在数字流体动力系统的控制下,系统提供... 详细信息

传统液压控制系统中,普通液压缸在变负载工况下会产生较大的压力波动。针对该情况,设计了四腔室液压缸。通过将活塞杆做成空腔兼做另一缸体的形式,把普通的两腔室液压缸做成具有4个腔室的液压缸。在数字流体动力系统的控制下,系统提供的压力数越多输出力的个数将会越多,以适应工作中的变负载情况。该液压缸节省了使用空间及成本,提高了工作效率,改善了工作效果。

关键词：多腔室液压缸变负载

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蒸汽失活裂化催化剂沸石活性组元的再活化研究

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燃料化学学报 2001年第Z1期29卷 225-229页

作者：杨小明罗京娥石油化工科学研究院北京100083

研究了蒸汽失活的裂化催化剂的再活化过程。高温水蒸汽下失活的含Y型沸石的裂化催化剂在碱性水热条件下进行原位晶化处理并经过含铵离子的水溶液交换以恢复其裂化活性 ,在整个处理过程中保持催化剂的粒度不变。对含ZSM - 5类沸石的失活... 详细信息

研究了蒸汽失活的裂化催化剂的再活化过程。高温水蒸汽下失活的含Y型沸石的裂化催化剂在碱性水热条件下进行原位晶化处理并经过含铵离子的水溶液交换以恢复其裂化活性 ,在整个处理过程中保持催化剂的粒度不变。对含ZSM - 5类沸石的失活裂化催化剂则采用含VA族元素的铵盐溶液处理 ,并在 35 0℃～ 6 0

关键词：再活化失活裂化催化剂 Y型沸石 ZSM-5型沸石原位晶化离子交换

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Comparasion of Inhibitory Effects on Survivin Gene Expression in Prostate Cancer by Vector-based microRNA and siRNA

Comparasion of Inhibitory Effects on Survivin Gene Expressio...

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2008年全国生物化学与分子生物学学术大会

作者： Jia-yun Liu xiao-mei luo ming-quan Su xiao-ke Hao (Center for Clinical Laboratory Medicine of PLA,Xijing Hospital,Fourth Military Medical Universty,Xian 710032,China)

Small interfering RNA (siRNA) and microRNA (miRNA) are small RNAs that play important roles in regu- lating gene *** serve as guides for silencing their corresponding target mRNAs and the promise of

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Introduction of a Cationic Peptide, CEMA, into Cotton Caused Abnormal Phenotype and Chloroplast Degeneration

Introduction of a Cationic Peptide, CEMA, into Cotton Caused...

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第三届国际棉花基因组协会（筹）学术讨论会

作者： Yu-long GUO, xiao-ying luo, ming-yang LI, Yan PEI, Hao ZHANG (Biotechnology Research Center, Southwest Agriculture University, Chongqing 400716, China)

As a strategy for phytopathogen control throughtransgenic way, antimicrobial peptide genes havebeen employed over the last two *** is a cationic antimicrobial chimericpeptide, which is produced by fusing eightamino acid residues from the antimicrobialpeptide ceropin A with a modified meltin. Threetransgenic cotton plants were generated bybombardment of cotton shoot tips using BioRadparticle gun. The gold particles were coated

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Evidence for histamine as a neurotransmitter in the cardiac sympathetic nervous system

Evidence for histamine as a neurotransmitter in the cardiac ...

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中国神经科学学会第四次会员代表大会暨第七届全国学术会议

作者： xiao-Xing luo,ming-Kai LI,Jing HU,Jia MENG,Hai-Fang WANG Department of Pharmacology,The Fourth Military Medical University,Xi’an 710032,China

Sympathetic nerve endings are endowed with auto-inhibitory histamine(HA) H

关键词： sympathetic nerve superior cervical ganglia,histamine histamine H3 receptor

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浅谈流体力学流量特性的矛盾与统一

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教育教学论坛 2017年第3期 210-211页

作者：袁晓明罗成李明燕山大学河北省重型机械流体动力传输与控制重点实验室河北秦皇岛066004 先进锻压成形技术与科学教育部重点实验室(燕山大学) 河北秦皇岛066004 燕山大学理学院河北秦皇岛066004

流体力学是液压与气压传动的理论基础,液压与气压传动是流体力学的延伸和发展。在流体力学的学习和研究过程中,一直存在着表面上似乎相互矛盾的问题,即从连续性方程来看,当管道半径增大时,其过流断面面积同样增大,流体平均流速减小;然... 详细信息

流体力学是液压与气压传动的理论基础,液压与气压传动是流体力学的延伸和发展。在流体力学的学习和研究过程中,一直存在着表面上似乎相互矛盾的问题,即从连续性方程来看,当管道半径增大时,其过流断面面积同样增大,流体平均流速减小;然而根据节流口的节流特性,可通过改变节流口过流断面面积控制流经过流断面的流量。从表面上理解,连续性方程与节流方程的结论存在矛盾。在对二者物理意义进行理论分析的基础上,以数学公式的方式进行了推导计算,揭示了上述表面矛盾的本质,得出了两者并不矛盾,且可以相互统一的结论。

关键词：流体力学连续性方程节流口节流特性

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Cortico-striatal gamma oscillations are modulated by dopamine D3 receptors in dyskinetic rats

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Neural Regeneration Research 2025年第4期20卷 1164-1177页

作者： Pengfei Wang Yuewei Bi Min Li Jiazhi Chen Zhuyong Wang Huantao Wen ming Zhou Minjie luo Wangming Zhang Neurosurgery Center Department of Pediatric NeurosurgeryGuangdong Provincial Key Laboratory on Brain Function Repair and RegenerationZhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina

Long-term levodopa administration can lead to the development of levodopa-induced *** oscillations are a widely recognized hallmark of abnormal neural electrical activity in levodopa-induced ***,studies have reported increased oscillation power in cases of levodopa-induced ***,little is known about how the other electrophysiological parameters of gamma oscillations are altered in levodopa-induced ***,the role of the dopamine D3 receptor,which is implicated in levodopa-induced dyskinesia,in movement disorder-related changes in neural oscillations is *** found that the cortico-striatal functional connectivity of beta oscillations was enhanced in a model of Parkinson’s ***,levodopa application enhanced cortical gamma oscillations in cortico-striatal projections and cortical gamma aperiodic components,as well as bidirectional primary motor cortex(M1)↔dorsolateral striatum gamma *** of PD128907(a selective dopamine D3 receptor agonist)induced dyskinesia and excessive gamma oscillations with a bidirectional M1↔dorsolateral striatum ***,administration of PG01037(a selective dopamine D3 receptor antagonist)attenuated dyskinesia,suppressed gamma oscillations and cortical gamma aperiodic components,and decreased gamma causality in the M1→dorsolateral striatum *** findings suggest that the dopamine D3 receptor plays a role in dyskinesia-related oscillatory activity,and that it has potential as a therapeutic target for levodopa-induced dyskinesia.

关键词： aperiodic components dopamine D3 receptor dorsolateral striatum functional connectivity gamma oscillations levodopa-induced-dyskinesia local field potentials neuromodulation Parkinson’s disease primary motor cortex

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