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Name
CiencIPCA
Type
Institutional Repository
Items
478 Publications
Compatibility
OpenAIRE Basic (DRIVER OA)
OAI-PMH
http://ciencipca.ipca.pt/oaiextended/request
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Detailed data provider information (OpenDOAR)

 

  • Fiber average size and distribution dependence on the electrospinning parameters of poly(vinylidene fluoride trifluoroethylene)) membranes for biomedical applications

    Vitor, Sencadas; Clarisse, Ribeiro; João, Nunes-Pereira; Vitor, Correia; Senentxu, Lanceros-Mendez (2012)
    Projects: FCT | PTDC/CTM/73030/2006 (73030), FCT | SFRH/BD/66930/2009 (SFRH/BD/66930/2009), FCT | SFRH/BPD/63148/2009 (SFRH/BPD/63148/2009), FCT | PTDC/CTM/69316/2006 (69316)
    Poly(vinylidene fluoride-trifluoethylene) electrospun membranes were obtained from a blend of dimethylformamide (DMF) and methylethylketone (MEK) solvents. The inclusion of the MEK to the solvent system promotes a faster solvent evaporation allowing complete polymer crystallization during the jet travelling between the tip and the grounded collector. Several processing parameters were systematically changed to study their influence on fiber dimensions. Applied voltage and inner needle dia...

    Absentismo nas PME'S: O caso Barcecom Têxteis S.A.

    Machado, Pedro (2016)
    As relações laborais têm-se modificado nos últimos anos. Estas transformações trazem consigo disfuncionamentos organizacionais que têm de ser resolvidos, de forma a potenciar a competitividade das organizações e a qualidade dos seus produtos e/ou serviços. De entre os vários disfuncionamentos, encontramos o fenómeno do absentismo que, devido aos seus efeitos negativos, nomeadamente, custos elevados, baixa produtividade, baixa qualidade de serviços, desmotivação, insatisfação e mau ambiente de...

    Utilização do método Multicritério AHP, na aquisição de um sistema ERP

    Fernandes, José António Nascimento (2014)
    The selection of an Enterprise Resource Planning (ERP) system is one of the most sensitive and highest impact processes in the area of information systems and technologies, because it supports and integrates the whole business of an organization. Hence the importance of deciding the best solution in order to contribute to the organization's competitiveness in a global and increasingly demanding market. Therefore, it is essential to provide tools to support decision making, turning complex and...

    A importancia do coaching na gestao de uma PME

    Silva, Pedro Manuel Mota da (2016)
    No decorrer desta dissertação será possível verificar a importância do coaching no planeamento e gestão de uma PME. Através de um modelo previamente definido, o modelo TGROW, e da sua aplicação a um caso especifico procura-se os resultados obtidos através desta metodologia e a sua implicação dos processos e no desempenho do trabalho. Com este estudo pretende-se assim demonstrar que é possível melhorar os níveis de produtividade e eficiência dentro de uma organização através do coaching, nomea...

    Local piezoelectric response of single poly(vinylidene fluoride) electrospun fibers

    Sencadas, Vitor; Ribeiro, Clarisse; Bdikin, I. K.; Kholkin, A. L.; Lanceros-Mendez, S. (2012)
    It is shown that electrospun poly(vynilidene fluoride) nanofibers are fully poled right after preparation and show b-phase contents of 70%, therefore being able to be implemented into electroactive devices without further processing steps. Further,the local piezoelectric properties of individual electrospun fibers have been studied by piezoresponse force microscopy. Piezoelectric response, polarization switching, and nanoscale patterning of the fibers have been demonstrated.
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