Disseny de filtres passa banda en l'ordre dels GHz mitjançant acobladors ressonants

L’objectiu d’aquest projecte es basa en l’obtenció de filtres passa banda mitjançant acobladors ressonants en l’ordre dels GHz, amb un ampla de banda fraccional del 30%. En un primer disseny es presentarà l’estudi del coeficient d’acoblament entre partícules ressonants i tot seguit s’introduirà una capacitat interdigital per a augmentar l’acoblament. Mitjançant el nou disseny es demostrarà que es pot arribar a resultats òptims tant en simulacions com a l’hora de fabricar el dispositiu.

Natural Capital's perception by Kodagu communities: a comparative study (Karnataka, India)

When we ask ourselves about a concrete definition of “Natural Capital” we can find a large and wide range of conceptions, which are attached to it. These can turn out to be confusing and contradictory in some cases. In theory, through books and different studies we know natural resources are composed by all the natural actives originated by the nature itself. Besides, these conform a patrimony for society as them are translated into a path towards economy: The Natural Capital. May not the Natural Capital be an easy conception to put in terms of economy it turns out to be an important capacitor for economy growth in most countries. In any case, we can clearly distinguish two ways as Natural Capital can be seen. One may elaborate a definition about it by reading what others have previously written, those who usually are quite far from the direct use of natural resources. On the other hand it would also be interesting to conform a definition of it by asking people who are constantly in contact with natural resources and consequently contribute to form the Natural Capital.

Resistance Switching in Transparent Magnetic MgO Films

We have studied the abrupt and hysteretic changes of resistance in MgO-based capacitor devices. The switching behavior is discussed in terms of the formation and rupture of conduction filaments due to the migration of structural defects in the electric field, together with the redox events which affects the mobile carriers. The results presented in this paper suggest that MgO transparent films combining ferromagnetism and multilevel switching characteristics might pave the way for a new method for spintronic multibit data storage.