Browsing Departament de Física i Enginyeria Nuclear (fins octubre de 2015) by Subject "621"

Now showing items 1-13 of 13

222Rn as a tracer for air mass transport characterization at 100-m-high tower in the south-west Spanish coast

Grossi, Claudia (Date of defense: 2012-03-30)

Es los últimos años se han llevado a cabo importantes trabajos de investigación, tomando el gas radón como elemento de evaluación en modelos de transporte atmosférico y así estimar el flujo de partículas. Además la utilización ...

Absolute quantification in brain SPECT imaging

Cot Sanz, Albert (Date of defense: 2003-12-17)

Certes malalties neurològiques estan associades amb problemes en els sistemes de neurotransmissió. Una aproximació a l'estudi d'aquests sistemes és la tomografia d'emissió SPECT (Single Photon Emission Computed Tomography) ...

Aportaciones al estudio de los campos de radiación ionizante ambiental

Cortés, Guillem (Date of defense: 2002-02-04)

Amb aquesta tesi s'intenta aportar la informació necessària per a millorar el coneixement dels camps de radiació ionitzant ambiental d'origen natural, i contribuir així a la millora de la gestió de les estacions de vigilància ...

Assessment of size aspects in modelling molten fuel coolant interaction.

Pla Freixa, Patricia (Date of defense: 2004-03-12)

Severe accidents in light water nuclear reactors occur when reactor vessel water inventory decreases and there is no available additional water coolant to be delivered into the core. In general, during an extended severe ...

Cryogenic Silicon Microstrip detector modules for LHC

Perea Solano, Blanca (Date of defense: 2004-07-05)

CERN is presently constructing the LHC, which will produce collisions of 7 TeV protons in 4 interaction points at a design luminosity of 1034 cm-2 s-1. The radiation dose resulting from the operation at high luminosity ...

Development of a simulation tool for MHD flows under nuclear fusion conditions

Mas de les Valls Ortiz, Elisabet (Date of defense: 2011-12-01)

In Nuclear Fusion Technology, MHD flows can be encountered in liquid metal (LM) breeding blankets, the part of a fusion reactor where tritium, one of the fusion fuels, is to be produced. There are several types of LM ...

Estudio del transporte de energía en plasma de fusión termonuclear con medidas experimentales obtenidas del espectrometro de intercambio de carga, realizado mediante técnicas de participación remota.

Fontdecaba Climent, Josep Maria (Date of defense: 2004-01-16)

En la investigació de la fusió termonuclear controlada per confinament magnètic es important conèixer el transport d'energia en els plasmes, doncs aquest transport és el que fa que es refredi més o menys ràpidament amb el ...

Evaluación de procedimientos desde la perspectiva probabilistica para la seguridad nuclear: aplicación a un reactor Westinghouse PWR

Martínez Cid, Manuel (Date of defense: 2012-11-09)

Probabilistic Risk Assessment for the evaluation of procedures in the Nuclear Safety field. Application to a pressurized water reactor. The studies contained in this PhD are involved in the Nuclear Safety research field. ...

Experimental study of feedback-induced dynamics in semiconductor lasers : from symbolic analysis to subwavelength position sensing

Aragoneses Aguado, Andrés (Date of defense: 2014-06-18)

The aim of this thesis is the study of the dynamics induced by optical feedback in semiconductor lasers. This study aims, on the one hand, to improve our knowledge of stocahstic complex systems, and on the other hand, to ...

IFMIF accelerator facility RAMI analyses in the engineering design phase

Bargalló Font, Enric (Date of defense: 2014-05-09)

The planned International Fusion Materials Irradiation Facility (IFMIF) has the mission to test and qualify materials for future fusion reactors. IFMIF will employ the deuteron-lithium stripping reaction to irradiate the ...

Radiation Transport Modelling in a Tokomak Plasma: Application to Performance Prediciton and Design of Future Machines

Albajar Viñas, Ferran (Date of defense: 2001-06-14)

The understanding and modelling of heat and radiation transport in tokamak plasmas is essential in order to progress in the development of thermonuclear fusion towards a practical energy source which meets all the future ...

Scaling-up methodology : a systematical procedure for qualifying NPP nodalizations. Application to the OECD/NEA ROSA-2 and PKL-2 Counterpart test

Martínez Quiroga, Victor (Date of defense: 2014-11-17)

System codes along with necessary nodalizations are valuable tools for thermal hydraulic safety analysis. Qualifying both codes and nodalizations is an essential step prior to their use in any significant study involving ...

Simulación de plasmas de dispositivos de fusión por confinamiento magnético tipo tokamak y stellarator. Validación experimental y aplicación al estudio del Heliac Flexible TJ-II

Fontanet Saez, Joan (Date of defense: 2001-07-05)

En el estudio de la fusión por confinamiento magnético es crucial conocer con detalle las condiciones físicas del plasma confinado. En este sentido los códigos de simulación son una herramienta muy útil para interpretar ...