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Force criterion of different electrolytes in microchannel

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Chinese Physics B 2009年第10期18卷 4349-4352页

作者：任玉坤闫辉姜洪源顾建忠 antonio ramos School of Mechatronics Engineering Harbin Institute of Technology Department Electronica y Electromagnetismo Universidad de Sevilla Avda Reina Mercedes s/n Sevilla 41012 Spain

The control and handling of fluids is central to many applications of the lab-on-chip. This paper analyzes the basic theory of manipulating different electrolytes and finds the two-dimensional model. Coulomb force and dielectric force belonging to the body force of different electrolytes in the microchannel were analyzed. The force criterion at the interface was concluded, and testified by the specific example. Three basic equations were analyzed and applied to simulate the phenomenon. The force criterion was proved to be correct based on the simulation results.

关键词： force criterion basic theory specific example numerical simulation

The Renascence Party and Union and Socio-Political Organization of Muslims in Spain

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Sociology Study 2014年第2期4卷 135-149页

作者： Jose antonio Pefia-ramos Universidad Pablo de Olavide Spain

This paper presents an overview and analyzes the impact of the Partido Renacimientoy Union de Espana （PRUNE, Renascence Party and Union in Spain） specifying in the socio-political articulation of Muslims in Spain. In particular, it aims to describe and analyze the historical and political context of the emergence of these types of parties in the European Union （EU）; their background in Spain, particularly in the Autonomous Cities of Ceuta and Melilla and their specific impact on socio-political movements. The main hypotheses of work are the heterogeneity of Islamic communities in Spain, its religious references and social integration are difficult and complex, implying that this will provide a strategic impact from PRUNE, which could be very limited, slow, and uncertain.

关键词： Politics religion Islam religious political party Islamic party immigration

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交流电渗驱动机理及流速计算

中国机械工程 2007年第14期18卷 1672-1675页

作者：姜洪源闫宝森杨胡坤 ramos antonio 哈尔滨工业大学哈尔滨150001 塞维利亚大学塞维利亚西班牙41014

在阐述电极极化机制的基础上说明了交流电渗流的形成过程;通过建立非对称电极等效电路和理论模型,获得了交流电渗流微泵的流速的计算公式;通过分析,解释了对称电极虽然能产生局部电渗流但不能形成流速的现象。研究结果为进一步分析和研... 详细信息

在阐述电极极化机制的基础上说明了交流电渗流的形成过程;通过建立非对称电极等效电路和理论模型,获得了交流电渗流微泵的流速的计算公式;通过分析,解释了对称电极虽然能产生局部电渗流但不能形成流速的现象。研究结果为进一步分析和研究交流电渗流微泵提供了理论基础。

关键词：交流电渗微泵等效电路平均流速

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行波电渗微流体驱动理论模型与实验

光学精密工程 2009年第5期17卷 1093-1098页

作者：姜洪源杨胡坤敖宏瑞 ramos antonio 哈尔滨工业大学机电工程学院黑龙江哈尔滨150001 西班牙塞维利亚大学电子电磁学院塞维利亚41012

为了研究行波电渗(TWEO)微流体驱动,在封闭的微通道内建立了TWEO微流体驱动模型,并进行了仿真和实验研究。根据TWEO驱动原理,分别建立了封闭通道内TWEO微流体驱动电场及流场的数学模型,并对电场及流场问题进行了求解,流场的仿真结果说... 详细信息

为了研究行波电渗(TWEO)微流体驱动,在封闭的微通道内建立了TWEO微流体驱动模型,并进行了仿真和实验研究。根据TWEO驱动原理,分别建立了封闭通道内TWEO微流体驱动电场及流场的数学模型,并对电场及流场问题进行了求解,流场的仿真结果说明了实验测量通道高度2/3处速度的合理性。最后,分析了实验和仿真结果并确定了容抗比例系数。实验及仿真结果表明:电导率分别为1.5 mS/m7、.7 mS/m1、6.9 S/m的KCl溶液的容抗比例系数分别为0.05、0.035、0.025,而且电导率与容抗比例系数呈线性关系。结果为进一步研究TWEO及其应用提供了理论基础及实验方法。

关键词：行波电渗理论模型微流体驱动仿真

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交流电渗微泵理论模型与数值仿真

哈尔滨工程大学学报 2007年第12期28卷 1367-1370页

作者：姜洪源杨胡坤闫辉 ramos antonio 哈尔滨工业大学机电工程学院黑龙江哈尔滨150001 塞维利亚大学电子电磁学院塞维利亚41012

通过交流电渗流的产生机制及对非对称电极交流电渗微泵驱动原理的分析,建立了交流电渗微泵的物理模型和数学模型.根据微通道内电势分布满足Laplace方程,确定了交流电渗微泵微通道内电势及电场分布.并且利用设定的微通道内流场的边界条件... 详细信息

通过交流电渗流的产生机制及对非对称电极交流电渗微泵驱动原理的分析,建立了交流电渗微泵的物理模型和数学模型.根据微通道内电势分布满足Laplace方程,确定了交流电渗微泵微通道内电势及电场分布.并且利用设定的微通道内流场的边界条件,对Navier-Storks方程进行了数值仿真计算,获得了微通道内电渗流流场,分析表明其仿真计算与实验结果具有较好的一致性.从而验证了交流电渗微泵理论模型的正确性,为进一步研究和分析非对称电极交流电渗微泵提供了理论工具和仿真手段.

关键词：交流电渗微泵非对称电极数字仿真

The role of power-to-gas in the European Union

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Green Chemical Engineering 2020年第1期1卷 6-8页

作者： antonio Dominguez-ramos Angel Irabien Department of Chemical and Biomolecular Engineering Avda.Los CastrosSnETSIIyTSantander39005Sp

The primary energy panorama in the European Union is still dominated by a significant share of fossil fuels in the form of coal,natural gas and *** a result,an ecological transition is encouraged in order to curb the related CO_(2)emissions from fossil fuels thus providing an alignment with the Paris *** the light of a renewable dominated future in the EU,Power-to-Gas technologies can play a major role not only to curb the current CO_(2)emissions but add extra flexibility to the power *** challenges remain ahead,due to the difficulties to couple all the elements needed in such a complex value chain,from technical to financial.

关键词： alignment power emissions

A model of bone adaptation as a topology optimization process with contact

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Journal of Biomedical Science and Engineering 2012年第5期5卷 229-244页

作者： antonio Andrade-Campos antonio ramos Jose A.Simoes Department of Mechanical Engineering Centre for Mechanical Technology&AutomationUniversity of AveiroCampus Universitário de SantiagoAveiroPortugal

Topology optimization is presently used in most diverse scientific, technologic and industrial areas, including biomechanics. Bone remodelling models and structural optimization has mutually provided inspiration for new developments in biomechanics and biomedicine. Considering that bone has the ability to adapt its internal structure to mechanical loading (Wolff’s law and Roux’s paradigm), it is possible to model the behaviour of the bone structure by the use of a topology optimization methodology whose optimization variables can be the relative densities and the orthotropic directions. In this work, the internal bone adaptation of a proximal femur is considered. The bone-remodelling scheme is numerically described by a time-dependent evolutionary procedure with anisotropic material parameters. The remodelling rate equation is obtained from the structural optimization task of maximizing the stiffness subject to a biological cost associated with metabolic maintenance of bone tissue in time. The situation of multiple load conditions is considered for a three-dimensional finite element model of the proximal femur. The bone density distribution of a real femur is used as the initial design for the onset of the remodelling mechanism. Examples of bone adaptation resulting from load changes are presented. The three-dimensional finite element model of the proximal femur with initial bone density distribution was adapted to implant a cementless stem. A remeshing technique is used to assign the bone relative density distribution to the new geometry and mesh. The time adaptation of the bone is assessed considering contact with friction at the bone-stem interface. Results of bone density evolution and osteointegration distribution are obtained.

关键词： Bone remodelling Topology Optimization Finite element Contact Osteointegration

Generation and Control of Turbulences in a Wind Tunnel

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Open Journal of Fluid Dynamics 2016年第4期6卷 453-471页

作者： América Torres Roberto Tapia antonio ramos División de Estudios de Posgrado Facultad de Ingeniería Eléctrica Universidad Michoacana de San Nicolás de Hidalgo Morelia México

In this paper, the generation and control of turbulences in a wind tunnel, for design, analysis and testing of test objects are proposed. Modifications to the wind tunnel are made in order to generate the turbulences in the test chamber. Specifically, for the turbulence analysis, the reflective symmetry concept is used in order to group the different turbulences cases generated in the wind tunnel test chamber. The Ansys software is used in order to model and analyze the wind tunnel. Specific platform or module known as Fluent is used for the analysis of the turbulence generated in the wind tunnel. To design proposal of a wind tunnel capable to generate and controlling turbulences is exposed in this paper. For this, the controller design and verification are performed by means of simulations. To obtain the control law structure, the inversion concept is used. The proposed control law is validated via a co-simulation implemented in the Simplorer module, with the aim of combining the power electronics part, controller and engine, with the proposed model wind tunnel.

关键词： Wind Tunnel Turbulence Control

Comparative study of the efficacy and safety of bromfenac, nepafenac and diclofenac sodium for the prevention of cystoid macular edema after phacoemulsification

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International Journal of Ophthalmology(English edition) 2018年第7期11卷 1210-1216页

作者： Ana Maria Chinchurreta Capote Mercedes Lorenzo Soto Francisco Rivas Ruiz Enrique Caso Peláez Alicia Garcia Vazquez Group OftaCosta antonio ramos Suárez Ophthalmology Service Health Agency Costa del SolMarbella Malaga 29603 Spain Research Unit Health Agency Costa del Sol MarbellaMalaga 29603 Spain National Research Network of Health Services in Chronic Diseases (REDISSEC) Madrid 28029 Spain

AIM： To compare the efficacy, tolerability and safety of bromfenac 0.09%, nepafenac 0.1% or diclofenac 0.1% for the prophylaxis of the cystoid macular edema（CME） after phacoemulsification. METHODS： Group sequential observational comparative study. After phacoemulsification, patients received two months for topical treatment of either diclofenac sodium, bromfenac or nepafenac. All patients received concomitant topical tobramycin 0.3% and topical prednisolone 1%. We measured CME using optical coherence tomography（OCT） central foveal thickness, macular thickness and total macular volume. RESULTS： We enrolled 243 patients from January to June 2015, and 35% received diclofenac, 32.9% bromfenac and 32.1% nepafenac. When we compared pre-operative to three weeks to two months, bromfenac was more effective in reducing foveal volume（21.3 and 35.4 mm3, respectively）, compared with the diclofenac（1.3 and 11.5 mm3, respectively）, and the nepafenac group, became more edematous 6.4 and 5.3, respectively. Totally 133 patients completed the post-surgical satisfaction questionnaire. Patients complained of eye stickiness in 13.8% whom we gave nepafenac, versus 10.3% whom we gave diclofenac sodium, and in 0 whom we gave bromfenac. CONCLUSION： Bromfenac is the best tolerated and is more effective than diclofenac and nepafenac in reducing CME after phacoemulsification.

关键词： cystoid macular edema bromfenac diclofenac nepafenac phacoemulsification