Now showing items 1-7 of 7

    • Design of a conductivity meter for fluids 

      Janer Serramià, Arnau (Universitat Politècnica de Catalunya, 2017-06)
      Bachelor thesis
      Open Access
      This work relates de process of analysis and creation of a conductimeter for fluids. The conductivity is a physical magnitude present on any material, this magnitude provides some revelant information about its composition. ...
    • Estudio de la relación entre resistividad eléctrica y permeabilidad hidráulica en un medio salino 

      Raventós Ortega, Olga (Universitat Politècnica de Catalunya, 2016-01)
      Master thesis
      Restricted access - author's decision
      El Salar de Atacama es mundialmente conocido, aparte de por su gran belleza y atractivo turístico, por ser una reserva mineral de gran importancia económica en la producción, principalmente, de Cloruro de Potasio, y de ...
    • Irreversible entropy model for damage diagnosis in resistors 

      Cuadras Tomàs, Àngel; Crisóstomo, Javier; Ovejas Benedicto, Victòria Júlia; Quílez Figuerola, Marcos (American Institute of Physics (AIP), 2015-10-28)
      Article
      Open Access
      We propose a method to characterize electrical resistor damage based on entropy measurements. Irreversible entropy and the rate at which it is generated are more convenient parameters than resistance for describing damage ...
    • Noniterative algorithms for electrical resistivity imaging applied to subsurface local anomalies 

      Gasulla Forner, Manuel; Pallàs Areny, Ramon (Institute of Electrical and Electronics Engineers, 2005-12)
      Article
      Open Access
      In this paper, we compare five noniterative (one-step) algorithms for two-dimensional electrical resistivity imaging applied to the location of subsurface local anomalies. Here, we analyze the performance of two backprojection ...
    • On the thermal noise introduced by a resistor in a circuit 

      Vargas Drechsler, Manuel; Pallàs Areny, Ramon (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1996-02-01)
      Working paper
      Open Access
      Comentari sobre l'article publicat anteriorment pels mateixos autors: Vargas, M; Pallás, R; The seemingly paradoxical noise behaviour some active circuits. IEEE Transactions on Instrumentation and Measurement. 1994, vol. ...
    • Thermal conductance monitoring systems design and study for sensing adhesion of viscous substances to surfaces in liquids 

      Eslava Griñó, Àlex (Universitat Politècnica de Catalunya, 2020-01)
      Bachelor thesis
      24 months embargo
      In this paper we present the results and conclusions extracted from the design, characterization and study of a heat sensor in the form of a platinum thermometer. With this, we aim to monitor the detection of the deposit ...
    • Thermal noise in a finite bandwidth 

      Vargas Drechsler, Manuel; Pallàs Areny, Ramon (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001-12-31)
      Article
      Open Access
      In a practical circuit, the output noise due to the thermal noise of a resistor will depend on the actual transfer function of the noise source. The bandwidth will never be infinite because the transfer function of either ...