3 documents found, page 1 of 1
Passive direct methanol fuel cells acting as fully autonomous electrochemical b...
Silva Ferreira, Nadia; Carneiro, Liliana P.T; Viezzer, Christian; Almeida, Maria J.T.; Marques, Ana C.; Pinto, Alexandra M.F.R.; Fortunato, ElviraThis work describes an innovative electrochemical biosensor that advances its autonomy toward an equipment-free design. The biosensor is powered by a passive direct methanol fuel cell (DMFC) and signals the response via an electrochromic display. Briefly, the anode side of the DMFC power source was modified with a biosensor layer developed using molecularly imprinted polymer (MIP) technology to detect sarcosine...
Fabricação de arcabouço compósito nano e micro estruturados de hidroxipatita e ...
Viezzer, ChristianAs interações célula-célula e célula-material são identificadas como fatoreschave para o controle da diferenciação celular e produção da matriz extracelular (MEC). As células-tronco, tanto in vivo como in vitro, respondem aos sinais biológicos que estas recebem do microambiente circundante. Em resposta a estes estímulos, as células podem secretar diversos fatores para modular o microambiente e ativar células pr...
Proliferation of human bone marrow stem cells cultured on alfa-tricalcium phosp...
Paris, Marcel Fasolo de; Baraldi, Carlos Eduardo; Viezzer, Christian; Machado, Denise Cantarelli; Oliveira, Marília Gerhardt deAbstract Objectives: to evaluate human bone marrow stem cells (HBMSC) cultured on α -tricalcium phosphate cement (α -TCP) and titanium (Ti) discs, as well as the osteoconductive properties of these biomaterials. Methods: discs of α -TCP and commercially pure Ti were manufactured and placed on polyethylene plates. Cells were cultured according to the following: group I – control (no discs); group II – α-TCP disc...