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Flow characteristics and regime transition of aqueous foams in porous media over a wide range of quality,velocity,and surfactant concentration

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Petroleum Science 2023年第2期20卷 1044-1052页

作者： bin-fei li Meng-Yuan Zhang Zhao-Min li Anthony Kovscek Yan Xin Bo-liang li Key Laboratory of Unconventional Oil&Gas Development(China University of Petroleum(East China)) Ministry of EducationQingdao266580ShandongPR China School of Petroleum Engineering China University of Petroleum(East China)Qingdao266580ShandongPR China Department of Energy Resources Engineering Stanford UniversityStanfordCA94305USA

Aqueous foam is broadly applicable to enhanced oil recovery(EOR).The rheology of foam as a function of foam quality,gas and liquid velocities,and surfactant concentration constitute the foundation of its *** great variations of the above factors can affect the effectiveness of N2 foam in EOR continuously in complex formations,which is rarely involved in previous relevant *** paper presents an experimental study of foam flow in porous media by injecting pre-generated N2 foam into a sand pack under the conditions of considering a wide range of gas and liquid velocities and surfactant *** results show that in a wide range of gas and liquid velocities,the pressure gradient contours are L-shaped near the coordinate axes,but V-shaped in other *** the surfactant concentration is a strong factor influencing the trend of pressure gradient *** flow resistance is very sensitive to the surfactant concentration in both the high-and low-foam quality regime,especially when the surfactant concentration is less than *** foam quality is an important variable to the flow resistance *** exists a transition point from low-to high-quality regime in a particular flow system,where has the maximum flow resistance,the corresponding foam quality is called transition foam quality,which increases as the surfactant concentration *** results can add to our knowledge base of foam rheology in porous media,and can provide a strong basis for the field application of foams.

关键词： Foam flow regime and transition Porous media Pressure gradient Flow velocity Surfactant concentration Foam quality

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A review of development methods and EOR technologies for carbonate reservoirs

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Petroleum Science 2020年第4期17卷 990-1013页

作者： Zheng-Xiao Xu Song-Yan li bin-fei li Dan-Qi Chen Zhong-Yun liu Zhao-Min li School of Petroleum Engineering China University of Petroleum(East China)Qingdao 266580ShandongChina Key Laboratory of Unconventional Oil and Gas Development China University of Petroleum(East China)Ministry of EducationQingdao 266580ShandongChina Sinopec Group Beijing 100728China

Carbonate reservoirs worldwide are complex in structure,diverse in form,and highly *** on these characteristics,the reservoir stimulation technologies and fluid flow characteristics of carbonate reservoirs are briefly described in this *** development methods and EOR technologies of carbonate reservoirs are systematically summarized,the relevant mechanisms are analyzed,and the application status of oil fields is *** challenges in the development of carbonate reservoirs are discussed,and future research directions are *** the current development processes of carbonate reservoirs,water flooding and gas flooding remain the primary means but are often prone to channeling *** flooding is an effective method of tertiary oil recovery,but the harsh formation conditions require high-performance chemical *** application of emerging technologies can enhance the oil recovery efficiency and environmental friendliness to a certain extent,which is welcome in hard-to-recover areas such as heavy oil reservoirs,but the economic cost is often *** future research on EOR technologies,flow field control and flow channel plugging will be the potential directions of traditional development methods,and the application of nanoparticles will revolutionize the chemical EOR *** the basis of diversified reservoir stimulation,combined with a variety of modern data processing schemes,multichannel EOR technologies are being developed to realize the systematic,intelligent,and cost-effective development of carbonate reservoirs.

关键词： Carbonate reservoir Reservoir stimulation Flow characteristic Development method EOR technology

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Pulmonary and cerebral lipiodol embolism after transcatheter arterial hemoembolization in hepatocellular carcinoma

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World Journal of Gastroenterology 2009年第5期15卷 633-635页

作者： Jian-Jun Wu Ming Chao Guang-Qiang Zhang bin li fei Dong Department of Radiology Second Affiliated Hospital Zhejiang University School of Medicine 88 Jiefang Road Hangzhou 310009 Zhejiang Province China

Pulmonary and cerebral lipiodol embolism after transcatheter arterial chemoembolization (TACE) of hepatocellular carcinoma is rare. To our knowledge, only 7 cases have been reported in the literature. We present a case of pulmonary and cerebral lipiodol embolism, and analyzed retrospectively the imaging and clinical data of the patient and conclude the most probable mechanism of pulmonary and cerebral lipiodol embolism, which is different from that of the cases reported previously.

关键词： Pulmonary embolism Cerebral embolism lipiodol Transcatheter arterial chemoembolization Hepatocellular carcinoma Complication

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Extracorporeal Membrane Oxygenation Support in Resuscitations for Acute Myocardial Infarction with Cardiac Arrest

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Chinese Medical Sciences Journal 2012年第1期27卷 60-61页

作者： li Feng Yong Yuan Jian-ting Dong Ying Han Zhi-hua Deng Wei-qi liu bin-fei li Heart Center Zhongshan Affiliated Hospital of Zhongshan UniversityGuangdong 528403China

MORTAliTY rate of acute myocardial infarction (AMI) patients could be as high as 80％,if present with or develop fatal arrhythmia and cardiac *** patients,despite the treatment with inotropes and intra-aortic balloon pump,are not hemodynamically stable enough to undergo emergent *** use of extracorporeal membrane oxygenation (ECMO) can help stabilize circulation and respiration,which could be a potential solution for patients under such critical *** this paper,we describe the application of ECMO for the resuscitations of 4 cardiac arrested AMI cases.

关键词：急性心肌梗死心脏外膜血流动力学心律失常氧 AMI 死亡率

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SUCCESSFUL EXTRACORPOREAL MEMBRANE OXYGENATION SUPPORT IN A PATIENT WITH FULMINANT MYOCARDITIS

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Chinese Medical Sciences Journal 2006年第3期21卷 194-196页

作者： Yong Yuan Jian-ting Dong Xuan-sheng Huang li-ting Zhang bin-fei li Zhi-gang Zhang Ying Han Heart Center Zhongshan People＇s Hospital Zhongshan 528403

FULMINANT myocarditis complicated with refractory cardiogenic shock carries a very high mortality （76%）. Herein we report our experi-ence in treating a 23-year-old Chinese woman with fulminant myocarditis complicate... 详细信息

关键词： extracorporeal membrane oxygenation fulminant myocarditis treatment

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Extracorporeal membrane oxygenation for coronavirus disease 2019-associated acute respiratory distress syndrome:Report of two cases and review of the literature

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World Journal of Clinical Cases 2021年第8期9卷 1953-1967页

作者： Jun-lin Wen Qi-Zhe Sun Zhou Cheng Xiao-Zu liao li-Qiang Wang Yong Yuan Jian-Wei li liu-ShengHou Wen-Jun Gao Wei-Jia Wang Wei-Yan Soh bin-fei li Da-Qing Ma Department of Anaesthesiology Zhongshan People’s HospitalZhongshan 528403Guangdong ProvinceChina Department of Surgery and Cancer Imperial College LondonLondon SW109NHUnited Kingdom Cardiovascular Centre Zhongshan People's HospitalZhongshan 528403Guangdong ProvinceChina Department of Intensive Medicine Zhongshan People's HospitalZhongshan 528403Guangdong ProvinceChina Department of Hepatology The Second People’s Hospital of ZhongshanZhongshan 528447Guangdong ProvinceChina Laboratory Diagnosis Centre Zhongshan People's HospitalZhongshan 528403Guangdong ProvinceChina Faculty of Medicine Ewcastle University Medicine MalaysiaJohor 79200Malaysia

BACKGROUND Coronavirus disease 2019(COVID-19),caused by severe acute respiratory syndrome coronavirus-2,is a worldwide *** COVID-19 patients develop severe acute respiratory distress syndrome and progress to respiratory *** such cases,extracorporeal membrane oxygenation(ECMO)treatment is a necessary life-saving *** SUMMARY Two special COVID-19 cases—one full-term pregnant woman and one elderly(72-year-old)man—were treated by veno-venous(VV)-ECMO in the Second People’s Hospital of Zhongshan,Zhongshan City,Guangdong Province,*** patients had developed refractory hypoxemia shortly after hospital admission,despite conventional support,and were therefore managed by *** both experienced multiple ECMO-related complications on top of the COVID-19 disease,their conditions improved *** patients were weaned successfully from the ECMO *** the time of writing of this report,the woman has recovered completely and been discharged from hospital to home;the man remains on mechanical ventilation,due to respiratory muscle weakness and suspected lung *** ECMO itself is associated with various complications,it is very important to understand and treat these complications to achieve optimal *** VV-ECMO can provide sufficient gas exchange for COVID-19 patients with acute respiratory distress ***,it is crucial to understand and treat ECMO-related complications.

关键词： SARS-CoV-2 COVID-19 Coronavirus Acute respiratory distress syndrome Extracorporeal membrane oxygenation Complications Case report

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An efficient quantum proactive incremental learning algorithm

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 49-57页

作者： lingxiao li Jing li Yanqi Song Sujuan Qin Qiaoyan Wen fei Gao State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications School of Cyberspace Security Beijing University of Posts and Telecommunications

In scenarios where a large amount of data needs to be learned, incremental learning can make full use of old knowledge, significantly reduce the computational cost of the overall learning process, and maintain high performance. In this paper, taking the MaxCut problem as our example, we introduce the idea of incremental learning into quantum computing, and propose a Quantum Proactive Incremental Learning algorithm(QPIL). Instead of a one-off training of quantum circuit, QPIL contains a multi-phase training on gradually-increased subgraphs of all vertices, proactively reducing large-scale problems to smaller ones to solve in steps, providing an efficient solution for MaxCut. Specifically, some vertices and corresponding edges are randomly selected for training to obtain optimized parameters of the quantum circuit at first. Then, in each incremental phase, the remaining vertices and corresponding edges are gradually added and the parameters obtained from the previous phase are reused in the parameter initialization of the current phase. We perform experiments on 120 different small-scale graphs, and it shows that QPIL performs superior to prevalent quantum and classical baselines in terms of approximation ratio(AR), time cost, anti-forgetting, and solving stability. In particular, QPIL's AR surpasses 20% of mainstream quantum baselines, and the time cost is less than 1/5 of them. The idea of QPIL is expected to inspire efficient and high-quality solutions in large-scale Max Cut and other combinatorial optimization problems.

关键词： variational quantum algorithm incremental learning multi-phase training MaxCut quantum computing

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Controlled cationic ring-opening polymerization of L-lactide by organic ion pair: novel approach to isotactic-rich and crystalline polylactide

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Science China Chemistry 2025年第1期68卷 394-402页

作者： Zhiqiang Ding Mingqian Wang Zijing Zhou bin Wang Yuesheng li Tianjin Key Laboratory of Composite & Functional Materials School of Materials Science and Engineering Tianjin University

living/controlled cationic ring-opening polymerization （ROP） of L-lactide is a promising approach to isotactic-rich and crystalline poly（L-lactide）.In contrast with the unsubstituted lactones,L-LA can not be polymerized by organic Lewis acids or carbenium ions,and the state of the art in this field is the cationic ROP of L-LA catalyzed by Br?nsted acid/alcohol system via activated monomer ***,we reported the first example of controlled cationic ROP of L-LA by using Meerweintype ion pair[Me3O]+[B（C6F5）4]-as the catalyst.[Me3O]+[B（C6F5）4]-promoted rapid L-LA cationic polymerization in the absence of alcohol,producing isotactic-rich and crystalline PLLA without transesterification and epimerization side *** activated chain end mechanism,involving twice SN2 substitution and configuration-inversion （S→R→S） with the assistance of released Me2O,was proposed and further verified by density functional theory and control *** work expands the catalytic toolbox of isotactic-rich and crystalline polylactide *** represents a unique example of cationic-controlled polymerization of L-LA catalyzed by an organic ion pair.

关键词： organic ion pair controlled cationic ring-opening polymerization activated chain end mechanism isotactic-rich polylactide

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Deciphering the role of mtH2O2 in hepatic ischemia-reperfusion injury mechanisms with low-background super-resolution fluorogenic probe

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Science China Chemistry 2025年第1期68卷 297-307页

作者： bin Fang limin Wang Haoqin li Jiaxin Zhang Yang Ding Pan Pan li Bo Peng Hua Bai lin li Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials &Engineering Northwestern Polytechnical University Institute of Flexible Electronics (IFE Future Technologies) Xiamen University

Hepatic ischemia-reperfusion injury（HIRI） is characterized by mitochondrial dysfunction and oxidative stress. Monitoring mitochondrial hydrogen peroxide（mtH2O2） levels in real-time through super-resolution imaging is crucial for elucidating its distribution in live cells and its mechanism of action during HIRI. However, low-background fluorogenic probes have been overlooked in the context of super-resolution imaging. In this study, we developed a low-background fluorogenic probe（MitoWG） with the potential for super-resolution morphology-correlated mitochondrial identification to track the fluctuates of mtH2O2in HIRI. Activation of the desirable fluorescence properties of the probe by mtH2O2was confirmed using structural illumination microscopy（SIM）, enabling high-quality mitochondrial imaging with exceptional specificity and *** in mtH2O2levels were successfully observed in both cellular and rat models of HIRI. Furthermore, we associated the decline in mitochondrial redox homeostasis with accelerated mtH2O2production during HIRI, which triggered mitophagy deficiency and led to cell death. In conclusion, Mito-WG possesses excellent photophysical and low-background properties for SIM imaging, making it a promising tool for mtH2O2tracking in HIRI research and clinical diagnosis.

关键词： hepatic ischemia-reperfusion injury low-background mtH2O2-activatable super-resolution imaging fluorogenic probe

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Precise gradient separation of nanoparticles using reduced graphene oxide-polyoxomolybdate membranes

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Science China Chemistry 2025年第1期68卷 209-216页

作者： Yixin Yang Wanlei Zhao Ruoxuan Zheng Hongqiang li Wei Chen Yu-fei Song State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Quzhou Institute for Innovation in Resource Chemical Engineering

The purification and size sieving of nanoparticles （NPs） represents a significant scientific ***,the r GO-polyoxometalates (POMs=PMo12,Mo132and Mo368) membranes were fabricated successfully via a simple and scalable POMsassisted in-situ photoreduction *** the mass ratio of r GO to PMo12was 1:30,the resultant r GO-PMo12membranes with highly ordered and uniform nanochannels of 1.0 nm can be obtained,which showed an accurate carbon quantum dots（CQDs） separation with a cut-off size approximately 1.0 *** increase of the size of the interlayered POMs from PMo12（1.0 nm）,{Mo132}（2.9 nm） to{Mo368}（3.8 nm）,the resultant r GO-PMo12,r GO-Mo132and r GO-Mo368exhibited precise gradient separation of CQDs and Au nanoparticles by size exclusion *** results pave a promising way to construct new twodimensional （2D） membranes for highly efficient size-selective separation.

关键词： reduced graphene oxide polyoxometalates membranes gradient separation nanoparticles

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