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  • Experimental validation of a plucked piezoelectric for underwater energy harvesting

     Toma, Daniel Mihai; Carbonell Ventura, Montserrat; Del Rio Fernandez, Joaquin; Bernet Piquet, Ferran; Mànuel-González, Bernat; Miquel Masalles, Jaume; Manuel Lazaro, Antonio
    Workshop in field of Nonlinear and Multiscale Dynamics of Smart Materials in Energy Harvesting Workshop
    Presentation's date: 2014-02-17
    Presentation of work at congresses

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    Experimental validation and modeling of plucked piezoelectric for underwater energy harvesting system  Open access

     Toma, Daniel Mihai; Del Rio Fernandez, Joaquin; Carbonell Ventura, Montserrat; Bernet Piquet, Ferran; Miquel Masalles, Jaume
    Symposium on Measurements of Electrical Quantities
    p. 45-49
    Presentation's date: 2014-09-16
    Presentation of work at congresses

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    Underwater wireless sensing systems are envisioned for stand-alone applications and as an addition to cabled observatory systems such as the OBSEA marine observatory. Therefore, this work presents a solution on how to generate power for marine wireless sensors using underwater motion energy. In this pare it is described a prototype based on a Bristol cylinder which can generate electrical voltage using piezoelectric bimorphs. Collecting water motion energy using piezoelectric energy harvesting is particularly difficult due to the mismatch between the low frequency of water kinetics and the high-frequency requirements of piezoelectric transducers. Therefore, to achieve frequency up-conversion we propose the use of the plucking technique applied to propose the use of the plucking technique applied to piezoelectric energy harvester. Experimental results show that the proposed energy harvester achieves a maximum power density of 350µW/cm3.

    Underwater wireless sensing systems are envisioned for stand-alone applications and as an addition to cabled observatory systems such as the OBSEA marine observatory. Therefore, this work presents a solution on how to generate power for marine wireless sensors using underwater motion energy. In this pare it is described a prototype based on a Bristol cylinder which can generate electrical voltage using piezoelectric bimorphs. Collecting water motion energy using piezoelectric energy harvesting is particularly difficult due to the mismatch between the low frequency of water kinetics and the high-frequency requirements of piezoelectric transducers. Therefore, to achieve frequency up-conversion we propose the use of the plucking technique applied to propose the use of the plucking technique applied to piezoelectric energy harvester. Experimental results show that the proposed energy harvester achieves a maximum power density of 350µW/cm3.

  • An impacting energy harvester through piezoelectric device for velocity water flow  Open access

     Toma, Daniel Mihai; Carbonell Ventura, Montserrat; Pujol Bresco, David; Manuel Lazaro, Antonio; Miquel Masalles, Jaume
    Instrumentation viewpoint
    num. 15, p. 75
    Date of publication: 2013-07-01
    Journal article

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    In this paper a new idea is proposed and studied to supply deep sea low-consumption devices using low-cost disk piezoelectric elements. The system scavenges energy from a water flow using piezoelectric materials and the characteristic undulating movement of bodies with pozitive buoyancy that are attached to the seabed with flexible cords, similat to an inverted pendulum. The piezoelectric components, together with the movement of the inverted pendulum, create an electrical power generator that harvests the mechanical energy brought by the sea movements. In addition, is studied to maximize the pendulums undulating motion by means of vortices produced by a cylindre situated upsetream. A prototype with the proposed electronic harvesting system is built and tested. The evaluation consist on testing the performance of the piezoelectric device and observe the electrical power generated.

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    An impacting energy harvester through piezoelectric device for oscillating water flow  Open access

     Toma, Daniel Mihai; Carbonell Ventura, Montserrat; Pujol Bresco, David; Manuel Lazaro, Antonio; Miquel Masalles, Jaume
    International Workshop on Marine Technology
    p. 39-42
    Presentation's date: 2013-10-09
    Presentation of work at congresses

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    The reduced power requirements of miniaturized electronics offers the opportunity to create devices having their power supply based on energy harvesters. In this paper a new idea is proposed and studied to supply underwater low-consumption devices using low-cost disk piezoelectric elements. The system scavenges energy from water motion induced in depth by surface gravity waves using piezoelectric materials and the characteristic oscillating movement of bodies with positive buoyancy that are attached to the seabed with flexible cords, similar to an inverted pendulum. The piezoelectric components that are subjected to impacts produced by the movement of the pendulum create an electrical power generator that harvests the mechanical energy brought by the sea movements. A prototype with the proposed electronic harvesting system is built and tested. The average power output of the prototype is 2.2 ± 0.3 µW, which can be increased signi¿cantly with further optimization.

    The reduced power requirements of miniaturized electronics offers the opportunity to create devices having their power supply based on energy harvesters. In this paper a new idea is proposed and studied to supply underwater low-consumption devices using low-cost disk piezoelectric elements. The system scavenges energy from water motion induced in depth by surface gravity waves using piezoelectric materials and the characteristic oscillating movement of bodies with positive buoyancy that are attached to the seabed with flexible cords, similar to an inverted pendulum. The piezoelectric components that are subjected to impacts produced by the movement of the pendulum create an electrical power generator that harvests the mechanical energy brought by the sea movements. A prototype with the proposed electronic harvesting system is built and tested. The average power output of the prototype is 2.2 ± 0.3 µW, which can be increased signi¿cantly with further optimization.

  • Energy harvesting from water for low-power systems  Open access

     Molino Minero Re, Erik; Carbonell Ventura, Montserrat; Fisac Fuentes, Carles; Manuel Lazaro, Antonio
    Instrumentation viewpoint
    num. 12, p. 14-15
    Date of publication: 2012-01-01
    Journal article

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    Following our traditional edition line, on this issue our magazine presents the annual summary of the different projects and research activities developed by SARTI research group during 2011. The research projects undertaken by SARTI, in collaboration with other Spanish and international research teams, are linked to the development of instrumentation technology for marine applications, as well as for general industry. SARTI, as research group of the Universitat Politècnica de Catalunya, began its work in 2000. Now with 12 years of activity, is the right time to introduce the issue number 12 of our Instrumentation ViewPoint magazine. We encourage you to collaborate in future issues of this journal, and to attend the next congress: INTERNATIONAL WORKSHOP ON MARINE TECHNOLOGY, MARTECH 2013.

  • PELIGRO VOLCÁNICO Y EVALUACIÓN DEL RIESGO EN TENERIFE

     Carbonell Ventura, Montserrat; Manuel Lazaro, Antonio; Gomariz Castro, Spartacus; Segalas Coral, Jordi; Hidalgo Castro, Alberto; Prat Farran, Joana d'Arc; Garriga Castillo, Juan Antonio
    Competitive project

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  • Piezoelectric energy harvesting from induced vortex in water flow

     Molino Minero Re, Erik; Carbonell Ventura, Montserrat; Fisac Fuentes, Carles; Manuel Lazaro, Antonio; Toma, Daniel Mihai
    IEEE International Instrumentation and Measurement Technology Conference
    p. 624-627
    Presentation's date: 2012-05-01
    Presentation of work at congresses

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    On this paper an evaluation of an energy harvesting system is presented. The system scavenges energy from a water flow using induced vortexes and piezoelectric materials. Cylinders of different size generate the vortexes and are attached to a cantilever that holds the piezoelectric generators. The evaluations consist on testing the performance of the cylinders and observe the frequencies and voltages generated. The preliminary results show that some of the configurations can generate a power of up to 0.31 μW.

  • SISTEMAS INALAMBRICOS PARA LA EXTENSION DE OBSERVATORIOS SUBMARINOS

     Carbonell Ventura, Montserrat; Del Rio Fernandez, Joaquin; Shariat-Panahi Ghaderinejad, Shahram; Antonijuan Rull, Josefina; Molino Minero Re, Erik; Garcia Benadí, Albert; Artero Delgado, Carola; Llorens Garcia, Ariadna; Manuel Lazaro, Antonio; Roset Juan, Francesc Xavier
    Competitive project

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  • Heating of saturated porous media in practice: several causes of local thermal non-equilibrium

     Virto Albert, Saturnino Luis; Carbonell Ventura, Montserrat; Castilla Lopez, Roberto; Gamez Montero, Pedro Javier
    International journal of heat and mass transfer
    Vol. 52, num. 23-24, p. 5412-5422
    DOI: doi:10.1016/j.ijheatmasstransfer.2009.07.003
    Date of publication: 2009-11
    Journal article

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    In recent years the industrial applications of porous materials has shown a growing relevance. Most of the technological thermal processes in porous media involve time-dependent thermal conditions. Therefore, the temperature at each point of the material also changes in time. In order to correctly carry out the technological process, it becomes necessary to know the temperature distribution inside the material. This is a problem of heat conduction in a fluid saturated porous media subject to a lack of local thermal equilibrium (LTNE). The purpose of this paper is to elucidate the several causes of LTNE, even in steady or quasi steady heat transfer processes in saturated porous media, and to evaluate the influence of structural characteristic of porous media and the presence of surfactant in the saturating liquid phase.

  • ESONET NoE 2009. Report on funded exchange of personnel

     Manuel Lazaro, Antonio; Del Rio Fernandez, Joaquin; Shariat-Panahi Ghaderinejad, Shahram; Trullols Farreny, Enric; Carbonell Ventura, Montserrat; Gomariz Castro, Spartacus; Toma, Daniel Mihai; Molino Minero Re, Erik
    Date: 2009-12-01
    Report

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    Sea seismometer coupling on the sediment  Open access

     Roset Juan, Francesc Xavier; Carbonell Ventura, Montserrat; Manuel Lazaro, Antonio; Gomariz Castro, Spartacus
    IMEKO World Congress
    p. 2010-2013
    Presentation's date: 2009-09-06
    Presentation of work at congresses

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    We can obtain the performance of the marine seismometer upon the sediment to know its coupling in the bottom sea. This paper deals with the coupling parameters in order to obtain the geophone response through the frequency. The use of the shake table and vibration calibrator allows to deduce the coupling transfer function between the geophone and the sediment sea without using a detailed model of interaction sensor/seabed.

  • Assessment of groundwater contamination caused by uncontrolled dumping in old gravel quarries in the Besòs aquifers (Barcelona, Spain)

     Navarro Flores, Andres Francisco; Carbonell Ventura, Montserrat
    Environmental geochemistry and health
    Vol. 30, p. 273-289
    Date of publication: 2008-06
    Journal article

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  • Coupling of geophone in the ocean bottom

     Roset Juan, Francesc Xavier; Carbonell Ventura, Montserrat
    Instrumentation viewpoint
    num. 6, p. 42-43
    Date of publication: 2007-10
    Journal article

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  • Caracterización de sistemas mediante técnicas acústicas impulsivas multicanal

     Manuel Lazaro, Antonio; Carbonell Ventura, Montserrat; Guzman Sola, Ramon
    Competitive project

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  • Coupling of Geophone in the Ocean Bottom

     Roset Juan, Francesc Xavier; Carbonell Ventura, Montserrat
    II International Workshop on Marine Technology (MARTECH 2007)
    Presentation of work at congresses

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  • Evaluation of groundwater contamination beneath an urban environment: The Besós river basin (Barcelona, Spain)

     Navarro Flores, Andres Francisco; Carbonell Ventura, Montserrat
    Journal of environmental management
    Vol. 85, num. 2, p. 259-269
    Date of publication: 2007-10
    Journal article

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  • Contaminación de aguas subterráneas en zonas urbanas: la cuenca del río Besós (Barcelona)

     Navarro Flores, Andres Francisco; Carbonell Ventura, Montserrat; Isnard, M
    Congreso Internacional sobre el Agua Subterránea en los Países Mediterráneos
    p. 157-168
    Presentation of work at congresses

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  • Caracterització de comportament del material emprat en la fabricació de mobiliari urbà

     Manuel Lazaro, Antonio; Carbonell Ventura, Montserrat; Folch, A; Cadena, J; Guasch, J
    Date: 2006-04
    Report

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  • Utilización de las aguas subterráneas en las áreas urbanas de la cuenca del río Besòs

     Navarro Flores, Andres Francisco; Carbonell Ventura, Montserrat
    Date of publication: 2004-03
    Book chapter

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  • Contaminación por As en los acuíferos de la cuenca del río Besós (Barcelona)

     Navarro Flores, Andres Francisco; Carbonell Ventura, Montserrat
    Simposio de Hidrogeología
    p. 59-70
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  • Contaminación por metales pesados e intrusión marina en el margen NE. del delta del río Foix (Barcelona)

     Carbonell Ventura, Montserrat; Navarro Flores, Andres Francisco
    Boletín geológico y minero
    Vol. 115, num. 1, p. 57-72
    Date of publication: 2004-01
    Journal article

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  • Impact of mining activities on soils in a semi-arid environment: Sierra Almagrera district, SE Spain

     Navarro Flores, Andres Francisco; Collado, D; Carbonell Ventura, Montserrat; Sanchez, J A
    Environmental geochemistry and health
    Vol. 26, num. 3-4, p. 383-393
    Date of publication: 2004-12
    Journal article

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  • Contaminación por As en los acuíferos de la cuenca del río Besós (Barcelona)

     Navarro Flores, Andres Francisco; Carbonell Ventura, Montserrat
    Hidrogeología y recursos hidráulicos XXVI
    Vol. XXVI, p. 59-70
    Date of publication: 2004-01
    Journal article

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  • REN2003-09247-C04-03 Deserción Térmica de Suelos Contaminados por Mercurio

     Carbonell Ventura, Montserrat; Navarro Flores, Andres Francisco
    Competitive project

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  • Utilización de las aguas subterráneas en las áreas urbanas de la cuenca del río Besós (Barcelona)

     Navarro Flores, Andres Francisco; Carbonell Ventura, Montserrat
    El agua y la ciudad sostenible: Hidrogeología urbana
    p. 151-158
    Presentation of work at congresses

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  • Physical analysis of the compression of filament assemblies

     Virto Albert, Saturnino Luis; Carbonell Ventura, Montserrat; Naik Kardile, Arun
    Textile research journal
    Vol. 72, num. 6, p. 474-480
    Date of publication: 2002-06
    Journal article

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  • Estudio experimental del proceso de calentamiento de medios porosos saturados hasta ebullición-"Dryout" de su fase líquida  Open access

     Carbonell Ventura, Montserrat
    Department of Fluid Mechanics, Universitat Politècnica de Catalunya
    Theses

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    La experimentación y posterior modelización de los procesos de transporte y transferencia de calor y de masa en medios poroso saturados encuentra un gran número de dificultades que se derivan fundamentalmente de la heterogeneidad del propio medio, de la metodología de su parametrización estructural y física para asimilarlo a un medio continuo.Los objetivos planteados en la presente tesis se han orientado hacia un mejor conocimiento de la influencia de diversos parámetros estructurales del medio poroso, así como de las propiedades de las substancias que constituyen la matriz sólida y la fase fluida saturante, en las características de ebullición de un medio poroso inicialmente saturado, calentado por su frontera inferior y limitado por una capa superior del mismo líquido saturante.A tal fin, se ha estudiado la influencia de la estructura del medio poroso (granular o fibrilar) y de la naturaleza de la sustancia que constituye la matriz sólida sobre la permeabilidad del medio poroso al agua y a una solución acuosa de tensioactivo, de baja concentración. Así mismo se ha estudiado la influencia respecto a la conductividad y difusividad térmicas efectivas en régimen no estacionario. Por último, utilizando la misma variedad de medios porosos saturados, se estudia el proceso de ebullición hasta que se alcanzan condiciones de "dryout", y se analizan las consecuencias que resultan de la variación de la estructura física del medio poroso, de la naturaleza de la sustancia que constituye su matriz sólida y de las propiedades del fluido saturante.En lo referente a las características fluidodinámicas y térmicas de los medios porosos estudiados se ha podido concluir:- La adición de un tensioactivo al agua saturante del medio poroso produce un comportamiento diferente según la naturaleza del sólido: en caso de inorgánica (arena) ocasiona un aumento de la permeabilidad intrínseca, mientras que en caso de orgánica (fibras de algodón) produce una reducción tanto mayor cuanto menor es la porosidad del medio poroso. Las causas de este diferente comportamiento, son las notables diferencias de absorción del tensioactivo según el tipo de sólido (orgánico o inorgánico) y la mejora substancial de la humectación de la superficie del sólido inorgánico por el fluido lo que activa la eficacia de desplazamiento de toda fase no acuosa adsorbida o retenida entre partículas.- La difusividad térmica efectiva promediada espacialmente tiende al valor de la difusividad del componente del medio poroso de menor difusividad térmica a medida que transcurre el tiempo de calentamiento.- La difusividad térmica efectiva de los medios porosos saturados en los que s / l < 1 se aproxima a la de la fase líquida; en los medios para los que s / l >> 1, dicha difusividad térmica efectiva es un grado de orden superior a la de la fase líquida.- La adición de tensioactivo a la fase líquida saturante provoca la disminución de la conductividad térmica efectiva de medio poroso saturado en aquellos en que la fase sólida es granular e inorgánica.En lo referente al proceso de calentamiento de un medio poroso saturado hasta ebullición-"dryout" de su fase líquida se ha descrito un modelo físico de comportamiento de los diferentes medios porosos que comporta las siguientes fases:i) Calentamiento del medio hasta la temperatura de saturación de su fase líquida, con evidente aumento de volumen de las fases sólida y líquida por dilatación térmica.ii) Proceso de evaporación con formación de una capa bifásica cuya frontera superior se desplaza a la velocidad del frente de vapor. Simultáneamente se produce una disminución de la presión fluidoestática en la frontera de la capa bifásica, lo que se traduce en una reducción del reflujo de líquido hacia la placa calefactora.iii) Total desaturación de la entrefase medio poroso-placa calefactora al recibir por reflujo menos líquido del que es capaz de evaporar la placa calefactora. Aparición del "dryout" y elevación progresiva de la temperatura de la placa.iv) Aparición, en algún caso, de un fenómeno de basculamiento de la fase líquida desde la capa subenfriada a la zona desaturada del medio poroso.

    A large number of difficulties are found in the experimentation and later modelization of transport and transfer heat and mass process in saturated porous media, which basically derive from the heterogeneity of the medium, the methodology of structural and physic parameterization to assimilate it to a continuous medium.The raised aims in this doctoral thesis have been directed towards a better knowledge of the influence of several structural parameters of the porous medium, as well as of the properties of the solid matrix and the saturating fluid phase, in the characteristics of boiling of an initially saturated porous medium, heated by its lower boundary and limited by an upper layer of the same saturating liquid.For this, the influence of the structure of the porous medium (granular or fibrous) and the nature of the solid matrix on the permeability to water and to a surfactant solution of lower concentration have been studied. The influence in relation to effective thermal conductivity and diffusivity in unstationary regime has also been studied. Finally, the boiling process until to achieve dryout conditions has been studied, and the consequences result from the variation of the physical structure of the porous medium, the nature of the solid matrix and the properties of the saturating fluid have been analyzed.About the fluid dynamic and thermal characteristics of the porous media studied, the thesis concludes that:- The addition of a surfactant to the saturating water of the porous medium produces a different behaviour depending on the nature of the solid: in inorganic matrix (sand) occasions an increase in the intrinsic permeability, whereas in organic matrix (cotton fibres) produces a decrease as greater as smaller is the porosity of the porous medium. The reasons of this different behaviour are the notable differences of absorption of the surfactant depending on the sort of solid matrix (organic or inorganic) and the important increase of the wetting of the inorganic solid's surface by the fluid activating the displacement of all adsorbed or retained not watery phase between particles.- The spatially averaged effective thermal diffusivity tends to the value of the diffusivity of the component of the porous medium with lower thermal diffusivity throughout the boiling process.- The effective thermal diffusivity of the saturated porous media which have s / l < 1 approaches to of the liquid phase; in the media with s / l >> 1, the effective thermal diffusivity is a grade of upper order to the of liquid phase.- The addition of surfactant to the saturating liquid phase gives rise to the decrease of the effective thermal conductivity of the saturated porous medium with granular and inorganic solid phase. A physical model of behaviour of the different saturated porous media concerning heating process until to achieve dryout conditions has been described considering the next phases:i) Heating of the medium until the saturation temperature of its liquid phase, with evident increase of volume of the solid and liquid phases by thermal dilatation.ii) Evaporation process with creation of a biphasic layer whose upper boundary displaces to the velocity of the vapour front. Simultaneously a decrease of the fluid static pressure in the boundary of the biphasic layer is produced, what result in a reduction of the reflux of liquid towards the heating plate.iii) Total unsaturation of the porous medium-heating plate interphase caused by to receive less liquid by reflux that the heating plate is capable of evaporating.iv) Appearance, in some case, of a fast phenomenon of turn upside down of the liquid phase from subcooled layer to the unsaturated zone of the porous medium.

  • Determinación de la conductividad térmica efectiva en medios porosos saturados granulares de matriz sólida metálica

     Carbonell Ventura, Montserrat; Virto Albert, Saturnino Luis
    Congreso Nacional de Ingeniería Mecánica
    p. 1199-1204
    Presentation's date: 2000-12-13
    Presentation of work at congresses

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  • HID96-1418 Gestión y acondicionamiento de aguas subterráneas urbanas para diversos usos

     Soler Manuel, Manuel-amando; Navarro Flores, Andres Francisco; Carbonell Ventura, Montserrat; Marques Calvo, Maria Soledad
    Competitive project

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  • Rheological properties of ocular application surfactants

     Barraco Serra, Marc; Trillas Gay, Enrique; Valero Ferrando, Mª Del Carmen; Carbonell Ventura, Montserrat
    FIRST SYMPOSIUM OF CROATIAN SOCIETY FOR SURFACTANTS
    p. 322-330
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  • Aportacio de nutrents mitjançant bombes dosificadores

     Trillas Gay, Enrique; Valero Ferrando, Mª Del Carmen; Carbonell Ventura, Montserrat
    VII JORNADA DE BIOFISICA I REOLOGIA APLICADA
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  • Utiliz. S2Mo COMO ADITIVO ACEITES MINERALES. Caract. REOGRAMICA

     Barraco Serra, Marc; Trillas Gay, Enrique; Valero Ferrando, Mª Del Carmen; Carbonell Ventura, Montserrat
    Congreso Nacional de Ingeniería Mecánica
    p. 227-229
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  • METODOLOGIA PRACTICA DETERMINACION CARACTER. CAUDALIMETRO VORTEX

     Carbonell Ventura, Montserrat
    Congreso Nacional de Ingeniería Mecánica
    Presentation's date: 1992-09-17
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  • SIMULACION ANALITICA FLUJO A TRAVES SINGULARIDAD. Ecu. FUNDAMENTALES

     Barraco Serra, Marc; Trillas Gay, Enrique; Valero Ferrando, Mª Del Carmen; Carbonell Ventura, Montserrat
    Congreso Nacional de Ingeniería Mecánica
    p. 137-139
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  • Diagnosi de patologies per metodes reologics. cas diabetes mellitus

     Barraco Serra, Marc; Trillas Gay, Enrique; Valero Ferrando, Mª Del Carmen; Carbonell Ventura, Montserrat
    XIV CONGRES DE METGES I BIOLEGS DE LLENGUA CATALANA
    p. 103
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  • Diagnosi de patologies per metodes reologics.cas diabetis mellitus

     Barraco Serra, Marc; Trillas Gay, Enrique; Carbonell Ventura, Montserrat; Valero Ferrando, Mª Del Carmen
    XIV CONGRES DE METGES I BIOLOGS DE LLENGUA CATALANA
    p. 103
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  • SIMULACION ANALITICA FLUJO A TRAVES SINGULARIDAD.ECUACIONES FUNDAM.

     Carbonell Ventura, Montserrat
    Congreso Nacional de Ingeniería Mecánica
    Presentation's date: 1992-09-17
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  • Problematica de la corrosion en conducciones

     Barraco Serra, Marc; Trillas Gay, Enrique; Valero Ferrando, Mª Del Carmen; Carbonell Ventura, Montserrat
    MI: montajes e instalaciones
    Vol. 0, num. 252, p. 97-102
    Date of publication: 1991-10
    Journal article

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  • Problematica de los aceites lubricantes usados.reutilizacion o elimiinacion co

     Trillas Gay, Enrique; Carbonell Ventura, Montserrat; Torres Camara, Ricardo; Valero Ferrando, Mª Del Carmen
    Fluidos
    Vol. 21, num. 182, p. 612-616
    Date of publication: 1991-10
    Journal article

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