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Name
Repositori Obert UdL
Type
Institutional Repository
Items
3263 Publications
Compatibility
OpenAIRE 2.0+ (DRIVER OA, EC funding)
OAI-PMH
http://repositori.udl.cat/oai/driver
More information
Detailed data provider information (OpenDOAR)

 

  • Thermal energy storage with phase change materials in building envelopes

    Els materials de canvi de fase (PCM) han estat considerats per a l’emmagatzematge tèrmic en edificis des de 1980. Amb la inclusió dels PCM en plaques de guix, guix, formigó o altres materials que s’utilitzen per a cobrir les parets, l’emmagatzematge tèrmic pot ser part de les estructures fins i tot en edificis lleugers. Les noves tècniques de microencapsulació han obert moltes possibilitats en aplicacions per a edificis. El treball que es presenta és el desenvolupament d’un formigó inno...

    Weed discrimination using ultrasonic sensors

    A new approach is described for automatic discrimination between grasses and broad-leaved weeds, based on their heights. An ultrasonic sensor was mounted on the front of a tractor, pointing vertically down in the inter-row area, with a control system georeferencing and registering the echoes reflected by the ground or by the various leaf layers. Static measurements were taken at locations with different densities of grasses (Sorghum halepense) and broad-leaved weeds (Xanthium strumarium and D...

    Effect of ursodeoxycholic acid in an experimental colon cancer model

    Objetivos: analizar si la administración oral del ácido ursodeoxicólico previene la aparición y desarrollo de carcinogénesis colónica en ratas. Material y métodos: ciento diez ratas de la raza “Sprague- Dawley” de 10 semanas de vida, de ambos sexos, fueron divididas en 5 grupos: a) 20 ratas control, sin tratamiento; b) 20 ratas, tratadas con ácido ursodeoxicólico (AUDC), a 4 mg/kg/día, junto con etanol, a 1,23 g/kg peso al día, añadidos al agua de bebida, desde el prin...

    Per a Jordi Castellanos

    A diferència dels amics que ara m’acompayen a la taula i de molts dels presents aquest vespre a l’IEC, jo no he compartit feina amb Jordi Castellanos ni, de fet, vaig ser-ne alumne. Però és tot just per això que al capdavall no refuso de ser aquí: hi sóc (i n’agraeixo l’oportunitat) simplement per un deute compartit de reconeixement per la feina d’excelència que Jordi Castellanos ha fet al llarg de les quatre darreres dècades. Hem de poder dir què admirem i què ens mereix agraïment, i no pode...
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