Now showing items 190-209 of 217
Nescolarde Selva, Lexa (Date of defense: 2006-07-20)
The main objective of this thesis is to contribute to the prevention and control of the cardiovascular risk, hydration state and nutritional state in dialysis patients using non-invasive electrical impedance measurements. ...
Hernández García, David (Date of defense: 2014-10-23)
Un dels límits fonamentals que afecta l'eficiència de conversió en cèl·lules fotovoltaiques és la distribució espectral de la radiació solar. D'una banda, només els fotons amb energia superior al gap del semiconductor poden ...
Neagu, Mădălin (Date of defense: 2017-09-08)
The main objective of this thesis is to bring new contributions to the self-healing and secure systems domain. In particular, to develop a self-healing technique for memory systems and to increase security of memory systems, ...
Rius Vázquez, Josep (Date of defense: 1997-06-13)
El objetivo de la tesis es realizar aportaciones en el campo de las estrategias de test basadas en la vigilancia del consumo quiescente de los circuitos integrados CMOS y de los sensores utilizados para dicho fin (test de ...
Bheesayagari, Chenna Reddy (Date of defense: 2019-11-04)
Dielectric charging represents a major reliability issue in a variety of semiconductor devices. The accumulation of charge in dielectric layers of a device often alters its performance, affecting its circuital features and ...
Vega Bru, Didac (Date of defense: 2022-01-14)
(English) This thesis deals with the study of macroporous silicon structures and their application to different technological areas. Macroporous silicon is a material that was described, in the form in which it is used in ...
Muñoz Cervantes, Delfina (Date of defense: 2008-07-21)
El elevado coste de producción de los módulos de silicio cristalino (c-Si) dificulta el progreso de la industria fotovoltaica como una alternativa viable para la producción de energía limpia. Por esta razón, los fabricantes ...
Carrió Díaz, David (Date of defense: 2022-07-25)
In order to optimize photovoltaic conversion efficiency, various solar cell architectures based on monocrystalline silicon (c-Si) have emerged in the past. Solar cells with interdigitated back contacts IBC (Interdigitated ...
Garcias Salvà, Pau (Date of defense: 1999-07-23)
El desarrollo de la tecnología electrónica hace necesario disponer de modelos fiables de los dispositivos y convierte la simulación de los mismos en un elemento estratégico para su desarrollo presente y futuro. El transistor ...
Yoosefi, Oraman (Date of defense: 2021-07-07)
In this thesis, design and simulation of optical logic gases based on different photonics crystals presented to used in the electronics and telecommunication industries. Optical devices perform faster with higher efficiencies ...
Sarriá Gandul, David (Date of defense: 2014-04-02)
In this Thesis, new methods for monitoring marine species using optical, radio frequency and acoustic technologies have been proposed and evaluated for biological studies in the laboratory and open sea. A study of the ...
Giral Castillón, Roberto (Date of defense: 1999-07-05)
Uno de los campos más importantes de la Electrónica de Potencia es el de los convertidores de potencia conmutados, que debido a sus características de alto rendimiento energético, reducido tamaño, posibilidades de regulación ...
Santolaria Lorenzo, José Alfonso (Date of defense: 2004-07-01)
Many methods for EMI suppression have been developed in the last fifty years, most of them, showing a hardly change in its implementation. Traditional tools for EMI suppression are related to the use of filters, shielding ...
Galindo Lorente, Sergi (Date of defense: 2015-11-18)
This work deals with the research on organic solar cells based on small-molecules semiconductors. In particular, organic solar cells of this thesis have been used tetraphenyldibenzoperiflanthene as donor material and ...
Ferré Tomàs, Rafel (Date of defense: 2008-04-11)
En aquesta tesi s'estudia la passivació del silici cristal·lí per a la producció de cèl·lules solars d'alta eficiència (> 20%) a baix preu.<br/>Actualment la indústria fotovoltaica empra capes de nitrur de silici crescut ...
Boronat Moreiro, Alfredo (Date of defense: 2013-10-11)
This work has been developed in a line of research related whit the Intermediate Band (IB) concept, which explores overcoming the photovoltaic efficiency limits established for solar cells. The IB concept implies two issues: ...
Company Se, Georgina (Date of defense: 2023-07-03)
(English) Respiratory diseases, along with heart diseases, are the most prevalent in the world. The acquisition of lung samples is essential for a correct diagnosis of the disease. For peripheral lesions it is not easy to ...
Luo, Chengyang (Date of defense: 2022-06-21)
Radio frequency identification over measurable ultra-high frequency textile substrates (UHF-RFID) is a promising technology to develop new applications in the field of health and the Internet of Things (IOT), due to the ...
González Jiménez, José Luis (Date of defense: 1998-01-19)
El ruido de conmutación generado por los circuitos digitales representa un problema importante que a menudolimita las prestaciones de los circuitos integradosdigitales y mixtos. éste ruido de conmutación estápresente en ...
Pallarés Valls, Oriol (Date of defense: 2016-11-30)
This thesis deals with the development of a time synchronization algorithm for underwater sensor networks. The ease of deployment and maintenance of wireless networks leaded this research to the use of an acoustic communication ...