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State and parameter identification of linearized water wave equation via adjoint method

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Science China(Information Sciences) 2024年第10期67卷 283-297页

作者： Yang YU Cheng-Zhong XU Hai-Long PEI Jinpeng YU School of Automation Qingdao University LAGEP Batiment CPE University Claude Bernard-Lyon 1 School of Automation Science and Engineering Key Laboratory of Autonomous Systems and Networked ControlMinistry of Education Guangdong Engineering Technology Research Center of Unmanned Aerial Vehicle SystemSouth China University of Technology

In this paper, we focus on the state and parameter identification problem of a hydrodynamical system. This system is modeled as a linearized water wave equation(LWWE), a hyperbolic state-space model coupled with a Laplace equation. We assume that the wave elevation at two distinct points is the only measurement of water waves. We show that the state and water depth can be reconstructed from this point measurement records. The identification problem is recast as an optimization problem over an infinite-dimensional space. We propose the adjoint method-based identification algorithm to generate an estimated state and water depth. We then performed a numerical simulation to show the effectiveness of our designed algorithm by comparing it with existing studies.

关键词： linearized water wave equation (LWWE) point observation state estimation parameter identification adjoint method numerical simulation

Preparation and Properties of Zirconium Hydrideon the surface of MCM-41 Mesoporous Molecular Sieves

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Chemical Research in Chinese Universities 2001年第4期17卷 426-431页

作者： WANG Xu-xu FU Xian-zhi LEFEBVRE Frederic BASSET Jean-Marie Research Institute of Photocatalysis Fuzhou UniversityFuzhou 350002P.R.China Laboratoire de Chimie Organometallique de Surface UMR CNRS-CPE 998643Bd dull Novembre 11 Novembre 191869616 Villeurbanne CedexFrance

Zirconium monohydride bonded to the framework oxygen of MCM-41 surface was prepared by the reaction of tetraneopentyl zirconium with MCM-41 surface hydroxyl groups, followed by the hydrogenolysis of the resulted product. The surface hydride was characterized by using infrared spectroscopy, solid-state NMR, elemental analysis, gas-phase chromatography and chemical probing reaction. It was shown that this surface species is stable below 150 ’C and can catalytically crack alkanes into methane and ethane at 100 .

关键词： MCM-41 Zirconium hydride Grafting reaction Catalytic cracking

Modification of the adsorption and catalytic properties of micro-and mesoporous materials by reactions with organometallic complexes

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Science China Chemistry 2010年第9期53卷 1862-1869页

作者： LEFEBVRE Frédéric PUTAJ Piotr BASSET Jean-Marie Université de Lyon ICL C2P2 UMR 5265(CNRS-CPE-Université Lyon 1) LCOMS-CPE Lyon

This review describes the work of two laboratories in the field of the modification of micro-and mesoporous molecular sieves through reactions with organometallic *** modification of zeolites can occur inside the pore channels or on the external surface,depending on the size of the organometallic *** the modification occurs on the external surface,it results in a decrease of the pore entrance,which will lead in turn to a modification of the sorption properties of the zeolite,by decreasing the rate of the adsorption(mainly by a kinetic control).Such a material can be also used in catalysis,because the external acid sites,which are responsible for side-reactions,have been removed upon *** small organometallic complexes are used,they can fill the channels and cages of the zeolite and react with internal hydroxyl *** to the high acidity of zeolites,the reaction occurs very easily(for example at-100℃ on faujasite),in contrast to what is observed on the external surface,therefore leading to high metal *** that case,the modification of the sorption properties will be mainly related to a thermodynamic *** resulting materials can be useful in catalysis,by combining the activity of the organometallic complex and properties(for example shape-selectivity) of the *** of mesoporous molecular sieves occurs always in the pores and results in altering of the sorption properties of the solid,by changing the interaction type between the sorbent and the *** example the sorption isotherm of alkanes is changed from type II to type III according to the IUPAC nomenclature.

关键词： zeolites transition metals organometallic compounds adsorption properties

Organic composition of gasoline and its potential effects on air pollution in North China

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Science China Chemistry 2015年第9期58卷 1416-1425页

作者： Guiqian Tang Jie Sun Fangkun Wu Yang Sun Xiaowan Zhu Yejun Geng Yuesi Wang State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC) Institute of Atmospheric PhysicsChinese Academy of Sciences China Petroleum Engineering Co. Ltd. (cpe)

When gasoline is burned to power an automotive engine, a portion of the fuel remains unburned or is partially burned and leaves the engine as hydrocarbon and oxygenated compounds. In addition, a small portion of the fuel can escape the vehicle through evaporation. Changes in alkanes, olefins and aromatics each affect emissions differently, which could complicate control strategies for air pollution. In this study, we collected 31 gasoline samples over five provinces and cities(Beijing, Tianjin, Hebei, Shandong, and Shaanxi) in North China between 2012 and 2013. The organic composition of the gasoline samples was analyzed using the gas chromatography-mass spectrometry(GC-MS) method, and the aniline compounds were analyzed by solvent extraction and the GC-MS method. The ratios of alkanes, aromatics, olefins and other organic compounds in gasoline were 40.6%, 38.1%, 12.9% and 8.4%, respectively. The aromatic and benzene exceedances were 15 and 8 based on the China's gasoline standards(III), and they accounted for 48.4% and 25.8% of all the gasoline samples, respectively. Strong carcinogen aniline compounds were detected in all 31 samples, and the content of aniline compounds in 3 samples exceeded 1%. The high proportion of aromatics and olefins in the gasoline increased the emissions of carbon monoxide(CO) and toxics, as well as the atmospheric photochemical reactivity of exhaust emissions, which could hasten the formation of secondary pollutants. Our results are helpful for redefining government strategies to control air pollution in North China and relevant for developing new refining technology throughout China.

关键词： aniline air pollution refining process emissions

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沙洲大酒店B座暖通空调设计

暖通空调 2007年第9期37卷 127-130页

作者：李远付 cpe青海分公司

介绍了该工程的供暖系统、空调系统及通风系统的设计。冬季采用低温热水地板辐射供暖,夏季采用变制冷剂流量多联分体式空调系统供冷,全年采用集中新风系统供给新风。集中送排风的通风方式满足了建筑物节能降耗要求,节约了投资,消除了酒... 详细信息

介绍了该工程的供暖系统、空调系统及通风系统的设计。冬季采用低温热水地板辐射供暖,夏季采用变制冷剂流量多联分体式空调系统供冷,全年采用集中新风系统供给新风。集中送排风的通风方式满足了建筑物节能降耗要求,节约了投资,消除了酒店客房及餐厅等场所的通风器噪声。

关键词：沙洲大酒店节能节约投资噪声消除设计

特殊驱动模型矩阵中固定胶粒的诊断生物芯片:用于探测P53基因点突变和Anti-HIV-1衣体蛋白质抗体(英文)

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光散射学报 2005年第3期 66-67页

作者： C. A. Marquette,A. Degiuli,L. J. Blum Laboratoire de Génie Enzymatique et Biomoléculaire EMB2 UMR 5013 CNRS - Université Lyon 1 batiment cpe - 43 Bd du 11 Novembre 1918 - 69622 Villeurbanne Cedex France Laboratoire de Génie Enzymatique et Biomoléculaire EMB2 UMR 5013 CNRS - Université Lyon 1 batiment cpe - 43 Bd du 11 Novembre 1918 - 69622 Villeurbanne Cedex France Laboratoire de Génie Enzymatique et Biomoléculaire EMB2 UMR 5013 CNRS - Université Lyon 1 batiment cpe - 43 Bd du 11 Novembre 1918 - 69622 Villeurbanne Cedex France

The development of biochips for the detection of nucleic acids, proteins or enzyme-substrate interactions has experienced a large increase since those tools were found to provide to researchers and diagnostic companies a rapid sample's screening. Nevertheless, one of the main handicap for the development in this area appeared to be a lack of generic immobilization procedure for those biologically active compounds; a lack linked in one hand to the obligatory effort to keep active the immobilized biological molecules and in the other hand to the diversity of detection/transduction systems used. The early immobilization procedure on silicon and glass support based on silane technology, still in use for protein and DNA immobilization [1-3] is now in competition with thiol-disulfide techniques [4-6] on gold surface, beads array [7, 8], micro-contact printing [9] and particle lithography [10]. Each of these techniques is used in conjunction with a detection system, most of the time intimately dependent of the immobilization procedure.

关键词： gene Anti-HIV-1 P53

Hybrid Analytical and Data-Driven Model Based Instance-Transfer Method for Power System Online Transient Stability Assessment

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CSEE Journal of Power and Energy Systems 2024年第4期10卷 1664-1675页

作者： Feng Li Qi Wang Yi Tang Yan Xu Jie Dang School of Electrical Engineering Southeast UniversityNanjing 210000China Center for Power Engineering(cpe) School of Electrical and Electronic EngineeringNanyang Technological UniversitySingapore 639798Singapore Central China Branch of State Grid Corporation of China Wuhan 430077China

Data-driven methods are widely recognized and generate conducive results for online transient stability ***,the tedious and time-consuming process of sample collection is often *** functioning of power systems involves repetitive sample collection due to the constant variations occurring in the operation mode,thereby highlighting the importance of collection *** a means to achieve high sample collection efficiency following the operation mode change,we propose a novel instance-transfer method based on compression and matching strategy,which facilitates the direct acquisition of useful previous samples,used for creating the new sample ***,we present a hybrid model to ensure rationality in the process of sample similarity comparison and selection,where features of analytical modeling with special significance are introduced into data-driven *** the same time,a data-driven method can also be integrated in the hybrid model to achieve rapid error correction of analytical models,enabling fast and accurate post-disturbance transient stability *** a paradigm,we consider a scheme for online critical clearing time estimation,where integrated extended equal area criterion and extreme learning machine are employed as analytical model part and data-driven error correction model part,*** results validate the credible efficacy of the proposed method.

关键词： Critical clearing time extreme learning machine instance-transfer method transient stability assessment

甲基丙烯酸甲酯聚合动力学和分子量模型及仿真

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高等学校化学学报 2002年第11期23卷 2182-2187页

作者：单国荣 Gilles Fevotte Yann LE Gorrec 浙江大学高分子工程研究所 LAGEP UPRES-A CNRS Q5007 University Lyon 1CPE-LyonBat.308G43bd du 11 Novembre 191869622 Villeurbanne CedexFrance

考虑甲基丙烯酸甲酯聚合过程中体积收缩 ,反应物和生成物的浓度变化 ,以及由于凝胶、玻璃化和笼闭等效应对各速率常数和物性参数的影响 ,从基元反应和物料平衡出发 ,推导了半间歇、有链转移剂参与情况下的聚合动力学和分子量模型 .用模... 详细信息

考虑甲基丙烯酸甲酯聚合过程中体积收缩 ,反应物和生成物的浓度变化 ,以及由于凝胶、玻璃化和笼闭等效应对各速率常数和物性参数的影响 ,从基元反应和物料平衡出发 ,推导了半间歇、有链转移剂参与情况下的聚合动力学和分子量模型 .用模型仿真计算了聚合温度、引发剂、溶剂和链转移剂的种类和浓度等对甲基丙烯酸甲酯聚合动力学和聚合过程中分子量变化的影响规律 ,并与实验和文献数据进行比较 .

关键词：甲基丙烯酸甲酯聚合动力学分子量模型仿真聚甲基丙烯酸甲酯

A systematic rheological study of alkyl amine surfactants for fluid mobility control in hydrocarbon reservoirs

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Petroleum Science 2018年第3期15卷 538-551页

作者： Madalyn M. Liebum George Hirasaki Quoc P. Nguyen Petroleum and Geosystems Engineering Department The University of Texas at Austin 200 E.Dean Keeton St.Stop C0300 Room CPE 5.104 A Austin TX 78712 USA Highlands Ranch CO 80129 USA

The basis of this study is to identify the versatility of N,N,N＇-trimethyl-N＇-tallow-1,3-diaminopropane（DTTM） surfactant in high saline environments. The surfactant was examined with sodium chloride, NaCl, to understand how triggers such as salt, p H, temperature, and surfactant concentration influences the viscoelastic response of the surfactant solution. The DTTM surfactant and salt（NaCl） concentrations used in steady-state shear viscosity analysis range from 0.2 wt% to 2 wt%and 5 wt% to 25 wt%, respectively. Along with DTTM results, three similar chemical structures are investigated to understand how viscosity changes with alterations in tail and head group composition. It was found that DTTM surfactant has the capability of transitioning from a foam-bearing to viscoelastic state at low surfactant concentrations under moderate to high saline conditions. A longer tail length promotes viscoelasticity and shear-thinning behavior. Terminals consisting of hydroxides or ethoxylates have a lower viscosity than that of methyl terminals. A head group consisting of two nitrogen atoms has a higher viscosity than those containing one nitrogen atom. The rheological characterization of DTTM presented in this paper is part of a larger study in determining the capability of this surfactant to foam CO2 for improving mobility control in CO2 enhanced oil recovery in high saline oil formations.

关键词： Rheology Surfactants Wormlike micelles Viscoelastic Amines