VERA MAURA FERNANDES DE LIMA
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Artigo IPEN-doc 23177 Extracellular matrix and its role in conveying glial/neural interactions in health and disease2017 - LIMA, VERA M.F. de; HANKE, WOLFGANGWe review the concepts and findings that may be related to the occurrence of non-linear glial/neural dynamics involving interactions between polyelectrolytes of the extracellular matrix and the basement membranes that cover the endfeet of glia at CNS interfaces. Distortions of perception and blocking of learning expressed in functional syndromes are interpreted as macroscopic electrochemical patterns that emerge in grey matter through glial/neural interactions.Artigo IPEN-doc 22587 Microgravity dependence of excitable biological and physicochemical media2006 - HANKE, W.; LIMA, V.M.F. de; WIEDEMANN, M.; MEISSNER, K.Resumo IPEN-doc 13117 The lesson from snake venom: ion transport and glycolysis are couple through the pumping rate of the Na/KAT pase2007 - LIMA, V.M.F. de; HANKE, W.; CAMILLO, M.A.; SPENCER, P.; NASCIMENTO, N.Artigo IPEN-doc 12976 Biphasic optical signal of an oscillating nonstationary belousov-zhabotinsky bulk reactions and its similarity to some neurophysiological events2007 - DOLZMANN, K.; KALTENBACH, S.; HANKE, W.; FERNANDES de LIMA, V.M.Artigo IPEN-doc 13651 Properties of wave propagation in a gel-type belousov-zhabothinsky reaction under micro-gravity2009 - HANKE, WOLFGANG; SIEBER, MICHAELA; SPENCER, PATRICK; SCHWERTNER, JURGEN; LIMA, VERA M.F. deThe Belousov–Zhabothinsky (BZ) reaction is a chemical reaction which exhibits spatial as well as temporal pattern formation. Being an excitable medium, it can be influenced by even small external forces. One of these small forces which under ground conditions permanently is given is gravity. The gravity dependence of the BZ-reaction has been investigated in some detail up to now, and it has been found that especially the propagation velocity of waves in thin layers of fluid BZ-medium depends significantly on gravity-amplitude and -orientation. This finding has been mainly assigned to an interaction of gravity with diffusion and convection in the medium at the wave front, and consequently it has been stated that the propagation of waves in gels of BZ-medium is not significantly gravity dependent. We have now done more detailed experiments and have been able to show that also in gels the propagation velocity of BZ-waves is altered by gravity, but less than in fluid systems. Experiments have been performed in a lab centrifuge, a sounding rocket experiment and a parabolic flight mission.