Ara es mostren els items 30-49 de 72

    • Heat dissipation test with fiber-optic distributed temperature sensing to estimate groundwater flux 

      Val Alonso, Laura del; Carrera Ramírez, Jesús; Pool Ramírez, Maria; Martínez Landa, Lourdes; Casanovas Muñoz, Carlos; Bour, Olivier; Folch Sancho, Albert (2021-03)
      Article
      Accés obert
      We measure groundwater flux and thermal parameters around a borehole performing a heat dissipation test by heating the armor of a single fiber-optic cable and interpreting the resulting heating curves with a new analytical ...
    • Hydrogeological impact assessment by tunnelling at sites of high sensitivity 

      Pujades Garnes, Estanislao; Vázquez Suñé, Enric; Culi, Laura; Carrera Ramírez, Jesús; Ledesma Villalba, Alberto; Jurado Elices, Anna (2015-07)
      Article
      Accés obert
      A tunnel for the High Speed Train (HST) was constructed in Barcelona with an Earth Pressure Balance (EPB) Tunnel Boring Machine (TBM). The tunnel crosses Barcelona and passes under some famous landmarks such as the Sagrada ...
    • Hydromechanical characterization of tide-induced head fluctuations in coastal aquifers: The role of delayed yield and minor permeable layers 

      Goyetche, Tybaud; Pool, Maria; Carrera Ramírez, Jesús; Luquot, Linda (Elsevier, 2022-09-01)
      Article
      Accés obert
      Tidal analysis is an aquifer scale testing that is a low-cost alternative to pumping tests for evaluating aquifer hydraulic parameters without groundwater extraction. Many analytical solutions may be used to assess aquifer ...
    • Impactos hidrogeologicos causados por la construccion del AVE en el entorno de la Sagrada Familia (Barcelona) 

      Pujades Garnes, Estanislao; Vázquez Suñé, Enric; Culi, Laura; Carrera Ramírez, Jesús; Ledesma Villalba, Alberto; Jurado Elices, Anna (Universidad Politécnica de Valencia, 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      El tunel del AVE que atraviesa Barcelona fue construido con una tuneladora tipo EPB. El trazado del túnel pasa bajo la Sagrada Familia (declarada patrimonio de la humanidad por la UNESCO), y debido a los riesgos que entrañaba ...
    • Impacts of cold CO2 injection in deep saline aquifers on the rock mechanical integrity. 

      Vilarrasa Riaño, Víctor; Carrera Ramírez, Jesús; SILVA, ORLANDO; Olivella Pastallé, Sebastià (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Injecting CO2 into aquifers at depths greater than 800 m brings CO2 to a supercritical state where its density is large enough to ensure an efficient use of pore space. However, CO2 may not be in thermal equilibrium with ...
    • Induced seismicity in geologic carbon storage 

      Vilarrasa Riaño, Víctor; Carrera Ramírez, Jesús; Olivella Pastallé, Sebastià; Rutqvist, Jonny; Laloui, Lyesse (2019-06)
      Article
      Accés obert
      Geologic carbon storage, as well as other geo-energy applications, such as geothermal energy, seasonal natural gas storage and subsurface energy storage imply fluid injection and/or extraction that causes changes in rock ...
    • Modeling evaporation processes in a saline soil from saturation to oven dry conditions 

      Gran Esforzado, Meritxell; Carrera Ramírez, Jesús; Olivella Pastallé, Sebastià; Saaltink, Maarten Willem (2011)
      Article
      Accés obert
      Thermal, suction and osmotic gradients interact during evaporation from a salty soil. Vapor fluxes become the main water flow mechanism under very dry conditions. A coupled nonisothermal multiphase flow and a reactive ...
    • Modeling mixing in stratified heterogeneous media: the role of water velocity discretization in phase space formulation 

      Soler Sagarra, Joaquim; Carrera Ramírez, Jesús; Bonet Gil, Enrique; Roig Pina, Carlos Alejandro; Becker, Pablo (2022-08-11)
      Article
      Accés obert
      Modeling solute transport in heterogeneous porous media faces two challenges: scale dependence of dispersion and reproducing mixing separately from spreading. Both are crucial since real applications may require km scales ...
    • Modelling a large oil spill in the aquifer of the Llobregat Lower Valley, Barcelona 

      Custodio Gimena, Emilio; Carrera Ramírez, Jesús; Sánchez Vila, Francisco Javier; Medina Sierra, Agustín; Manzano Arellano, María del Sol; Galarza López, German (European Center for Pollution research, 1993)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      About 70 m3 of gasoline were poured as the result of an intentíonal breakdown of a major pipeline along the Lower Llobregat Valley. The main groundwater aquifer of the Barcelona area was affected by the gasoline that was ...
    • Multicomponent reactive transport in multicontinuum media 

      Donado, Leonardo David; Sánchez Vila, Francisco Javier; Dentz, Marco; Carrera Ramírez, Jesús; Bolster, Diogo (2009)
      Article
      Accés obert
      Multicomponent reactive transport in aquifers is a highly complex process, owing to a combination of variability in the processes involved and the inherent heterogeneity of nature. To date, the most common approach is to ...
    • Multiple induced seismicity mechanisms at Castor underground gas storage illustrate the need for thorough monitoring 

      Vilarrasa, Victor; De Simone, Silvia; Carrera Ramírez, Jesús; Villaseñor Hidalgo, Antonio (2022-06-17)
      Article
      Accés obert
    • Multirate mass transfer simulation of denitrification in a woodchip bioreactor 

      Wang, Jingjing; Carrera Ramírez, Jesús; Valhondo González, Cristina; Saaltink, Maarten Willem; Petchamé Guerrero, Jordi; Zhang, Fengshou; Herbert, Roger (Elsevier, 2023-09)
      Article
      Accés obert
      Denitrifying woodchip bioreactors (DWBs) have proven to be an efficient nature-based solution for nitrate removal. Modeling DWBs is required for improving their design and operation, but is hindered by the complexity of ...
    • Numerical advances to simulate shear failure and tensile failure due to hydraulic fracturing operations 

      Gómez Castro, Berta María; De Simone, Silvia; Carrera Ramírez, Jesús (2017)
      Text en actes de congrés
      Accés obert
      In recent years, some geological applications like the CO2 storage or the hydraulic fracturing have attracted the attention not only of the scientific community but also of the general public. One of the reasons of the ...
    • Numerical formulation for a simulator (CODE_BRIGHT) for the coupled analysis of saline media 

      Olivella Pastallé, Sebastià; Gens Solé, Antonio; Carrera Ramírez, Jesús; Alonso Pérez de Agreda, Eduardo (MCB University Press, 1996)
      Article
      Accés obert
      Salt rocks are being considered as potential recipients for geologic disposal of nuclear waste because of their favourable hydraulic and mechanical properties. In essence, processes controlling the behaviour of salt rocks ...
    • Occurrence of carbamazepine and five metabolites in an urban aquifer 

      Jurado Elices, Anna; López Serna, Rebeca; Vázquez Suñé, Enric; Carrera Ramírez, Jesús; Pujades Garnes, Estanislao; Petrovic, Mira; Barceló Cullerés, Damià (2014-11-01)
      Article
      Accés restringit per política de l'editorial
      This paper deals with urban groundwater contaminated with carbamazepine (CBZ) and five of its human metabolites in Barcelona. Groundwater samples were accordingly collected in the aquifers of Poble Sec and Besos River ...
    • On the localization of chemical reactions in multicontinuum media 

      Wang, Jingjing; Carrera Ramírez, Jesús; Saaltink, Maarten Willem; Valhondo González, Cristina (Elsevier, 2022-09)
      Article
      Accés obert
      Reactive transport (RT) through heterogeneous media, may cause chemical heterogeneity if water flux is slow through portions of the medium. In such cases, chemical localization (i.e., the occurrence of reactions that would ...
    • PROOST: object-oriented approach to multiphase reactive transport modeling in porous media 

      Gamazo, Pablo; Slooten, Luit Jan; Carrera Ramírez, Jesús; Saaltink, Maarten Willem; Bea, Sergio Andres; Soler Guitart, Joan (2016-03)
      Article
      Accés obert
      Reactive transport modeling involves solving several nonlinear coupled phenomena, among them, the flow of fluid phases, the transport of chemical species and energy, and chemical reactions. There are different ways to ...
    • Radionuclide migration: coupling transport and chemistry 

      Carrera Ramírez, Jesús; Ayora Ibáñez, Carlos; Saaltink, Maarten Willem; Dentz, Marco (Woodhead Publishing Limited, 2012)
      Capítol de llibre
      Accés restringit per política de l'editorial
    • Reactive barriers for renaturalization of reclaimed water during soil aquifer treatment 

      Valhondo González, Cristina; Carrera Ramírez, Jesús; Martínez Landa, Lourdes; Wang, Jingjing; Almafitano, Stefano; LEvantesi, Caterina; Díaz Cruz, Sílvia (2020-04)
      Article
      Accés obert
      Managed aquifer recharge (MAR) is known to increase available water quantity and to improve water quality. However, its implementation is hindered by the concern of polluting aquifers, which might lead to onerous treatment ...
    • Reactive transport: a review of basic concepts with emphasis on biochemical processes 

      Carrera Ramírez, Jesús; Saaltink, Maarten Willem; Soler Sagarra, Joaquim; Wang, Jingjing; Valhondo González, Cristina (2022-02)
      Article
      Accés obert
      Reactive transport (RT) couples bio-geo-chemical reactions and transport. RT is important to understand numerous scientific questions and solve some engineering problems. RT is highly multidisciplinary, which hinders the ...