UPCommons. Portal del coneixement obert de la UPC: Enviaments recents

Ara es mostren els items 1-12 de 101879

  • Mineralogy of the Chaparra IOCG deposit, southern Peru 

    Yáñez, Juan; Alfonso Abella, María Pura (European Geosciences Union (EGU), 2014)
    Comunicació de congrés
    Accés obert
    The Chaparra IOCG, located in southern Peru, near Chala, is mined and exploited by small-scale miners for gold, however, it has not been studied until now. Here we present a preliminary geological and mineralogic study of ...

  • Mineral assemblages in the tin (-indium) Santa Fe mining district, Bolivia 

    Jimenez Franco, Abigail; Alfonso Abella, María Pura; Canet Miquel, Carles; Trujillo, Juan Elvys; García-Valles, M (2016)
    Comunicació de congrés
    Accés obert
    The Santa Fe Mining District (SFD) is located in the Bolivian portion of the Central Andean Belt, which is an important tin province that hosts abundant world-class deposits, some of them with high indium content. In this ...

  • Macro talent management in Spain: Is the sun rising again? 

    Álvaro Moya, Adoración; Gallardo Gallardo, Eva; Paniagua, Jordi (Routledge, 2018-07-18)
    Capítol de llibre
    Accés restringit per política de l'editorial
    Macro talent management incorporates activities aimed at attracting, mobilizing, developing, and retaining top talent within an organization. As such, it has also major implications for organizations, including multinational ...

  • Flexoelectric MEMS: towards an electromechanical strain diode 

    Bhaskar, Umesh Kumar; Banerjee, Nirupam; Abdollahi Hosnijeh, Amir; Solanas, E.; Rijnders, Guus; Catalan, Gustau (2016)
    Article
    Accés obert
    Piezoelectricity and flexoelectricity are two independent but not incompatible forms of electromechanical response exhibited by nanoscale ferroelectrics. Here, we show that flexoelectricity can either enhance or suppress ...

  • Mineralogy of the Santa Fe tin deposit, Bolivia 

    Jimenez Franco, Abigail; Alfonso Abella, María Pura; Canet Miquel, Carles; García Vallès, Maite; Trujillo, Juan Elvys (European Geosciences Union (EGU), 2014)
    Comunicació de congrés
    Accés obert
    Santa Fe is a Sn-Zn-Pb-Ag ore deposit located in the Oruro district, Central Andean Tin Belt, Bolivia. Mineralization occurs in veins and disseminations. It is hosted in Silurian shales and greywackes. The sedimentary ...

  • Reducing Interface Recombination through Mixed Nanocrystal Interlayers in PbS Quantum Dot Solar Cells 

    Pradhan, Santanu; Stavrinadis, Alexandros; Gupta, Shuchi; Konstantatos, Gerasimos (ACS, 2017-08-08)
    Article
    Accés restringit per política de l'editorial
    The performance of ZnO/PbS colloidal quantum dot (CQD)-based heterojunction solar cells is hindered by charge carrier recombination at the heterojunction interface. Reducing interfacial recombination can improve charge ...

  • Mineralogy and geochemistry of the IRG Misky gold deposit, southern Peru 

    Palacios Ubach, Silvia; Alfonso Abella, María Pura; Proenza, Joaquín Antonio (European Geosciences Union (EGU), 2014)
    Comunicació de congrés
    Accés obert
    The Misky gold deposit is one of the several Intrusion Related gold deposits that occur in the ocoña river basin, southern Peru. They are hosted in magmatic rocks from the Nazca-Palpa-Ocoña belt, from the Coastal Batholith. In ...

  • A flexoelectric microelectromechanical system on silicon 

    Bhaskar, Umesh Kumar; Banerjee, Nirupam; Abdollahi Hosnijeh, Amir; Wang, Zhen; Scholm, Darrell G.; Rijnders, Guus; Catalan, Gustau (2016)
    Article
    Accés obert
    Flexoelectricity allows a dielectric material to polarize in response to a mechanical bending moment and, conversely, to bend in response to an electric field. Compared with piezoelectricity, flexoelectricity is a weak ...

  • MoS2-HgTe Quantum Dot Hybrid Photodetectors beyond 2 µm 

    Huo, Nengjie; Gupta, Shuchi; Konstantatos, Gerasimos (Wiley, 2017-05-03)
    Article
    Accés obert
    Mercury telluride (HgTe) colloidal quantum dots (CQDs) have been developed as promising materials for the short and mid‐wave infrared photodetection applications because of their low cost, solution processing, and size ...

  • Domesticating the Street (Rehabitar project) 

    Mària Serrano, Magdalena; Fuertes Pérez, Pere; Puigjaner Barberà, Anna; Sauquet Llonch, Roger Joan (TU Delft, 2014)
    Article
    Accés obert

  • Trap-state suppression and improved charge transport in PbS quantum dot solar cells with synergistic mixed ligand treatments 

    Pradhan, Santanu; Stavrinadis, Alexandros; Gupta, Shuchi; Bi, Yu; Stasio, Francesco Di; Konstantatos, Gerasimos (Wiley, 2017-04-12)
    Article
    Accés obert
    The power conversion efficiency of colloidal PbS‐quantum‐dot (QD)‐based solar cells is significantly hampered by lower‐than‐expected open circuit voltage (VOC). The VOC deficit is considerably higher in QD‐based solar cells ...

  • Mercury pollution from the artisanal mining in Yani gold district, Northern Bolivia 

    Alfonso Abella, María Pura; Freixas, Anna; Bascompta Massanes, Marc; Aranibar Jiménez, Ana María; Villegas Flores, Karla Stephanie; García-Noguero, Eva María; Higueras Higueras, Pablo Leon; Saraiva, Angela Cielito (European Geosciences Union (EGU), 2016)
    Comunicació de congrés
    Accés obert
    Artisanal gold mining is the main economic activity in the Yani district, Northern Bolivia. In this area abundant orogenic gold deposits constituted by quartz veins hosted in paleozoic turbiditic series that contain either ...