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Involuções fixando RP(6)URP(2n) e variedades compatíveis com o ponto com respeito à involuções
(Universidade Federal de São Carlos, 2020-11-25) Costa, Jessica Cristina Rossinati Rodrigues da; Pergher, Pedro Luiz Queiroz; https://lattes.cnpq.br/3328545959112090; https://lattes.cnpq.br/2267716444254349
In this work, we have two objectives: the first lives in the context of the classification, up to equivariant cobordism, of the pairs (M, T) , where M is a closed and smooth manifold and T is a smooth involution defined in M , with a prefixed fixed point set F . This is a well-established problem in the literature, and for reasons that will be explained in the introduction of this work, an important case is when F is an union of real projective spaces. Concerning this case, for F = R P(n) , such a classification was determined by P. E. Conner and E. E. Floyd, for n odd, and by R. E. Stong for n even. D. C. Royster determined such a classification when F is the disjoint union of two real projective spaces, F = R P(m)UR P(n) , but he left open the cases where m and n are even and greater than zero. P. L. Q. Pergher and A. Ramos worked on such open cases, solving the particular cases in which m is a power of 2 and n> 0 is any even natural number. Thus, taking into account the works of Royster, P. Pergher and A. Ramos, the first open case was F = R P(6) UR P(2n) . In our work, we obtain the classification for this open case; furthermore, we extend it to pairs (M, \Phi) , where \Phi is an smooth action of the group (Z_2)^k in M , where (Z_2)^k is understood here as the group generated by k commuting involutions T_1 , T_2 ,...., T_k defined in M . Our second objective is to deal with a definition, created by us, related to a certain property associated with a closed, connected and smooth manifold. Let F be such a manifold. We say that F satisfies the property CP ( compatible with the point) if there exists a closed and smooth manifold M and a smooth involution T such that the fixed point set of T is F U{point } . The inspiration for this definition was the fact that, Conner and Floyd proved that, among the spheres S ^ n , the only ones that satisfy such property were S ^ 1 , S ^ 2 , S ^ 4 and S ^ 8 , and later, P. Pergher determined all products of spheres that satisfy this property. Firstly, we determine some simple results of validity and non-validity of CP , among which we highlight the following intriguing result: every manifold of dimension 1 , 2 , 4 or 8 satisfies CP . However, the most intricate part of our work was some results of non validity of the property CP for Dold manifolds P (m, n) .
Participação do Hormônio Concentrador de Melanina (MCH) no hipotálamo lateral/área perifornicial (LH/PFA) e locus coeruleus (LC) na resposta ventilatória à hipercapnia em ratos durante o sono e vigília
(Universidade Federal de São Carlos, 2020-11-25) Rodrigues, Laísa Taís Cabral; Dias, Mirela Barros; https://lattes.cnpq.br/3203493045928389; https://lattes.cnpq.br/8422589155757853
The melanin-concentrating hormone (MCH), a neuropeptide produced by neurons of a few areas in the CNS including the lateral hypothalamus/perifornical area (LH/PFA), has been implicated in the central hypercapnic chemoreflex, but the mechanisms involved have not been studied yet. Here, we evaluated whether MCH modulates the central chemoreflex acting in the LH/PFA and/or in the locus coeruleus (LC). For this, unanesthetized Wistar rats were microinjected with MCH [0.4 mM] into the LH/PFA and LC, and the MCH1-R antagonist SNAP-94847 [63 mM], into the LH/PFA, while the pulmonary ventilation was evaluated in room air and 7% CO2 together with body temperature, EEG and EMG, during wakefulness and sleep, in the dark and light periods. MCH intra-LH/PFA caused a decreased CO2 ventilatory response during wakefulness and sleep, in the light, but not in the dark period while SNAP-94847 intra-LH/PFA caused an increased CO2 ventilatory response during wakefulness in the light period. In the LC, MCH caused no change in the hypercapnic ventilatory response of rats. Our results suggest that MCH via MCH1-R in the LH/PFA, but not in the LC, exerts an inhibitory modulation of the hypercapnic ventilatory during the light-inactive period.
Trajetória de um aluno estrangeiro na medicina UFSCar
(Universidade Federal de São Carlos, 2020-11-25) Gomez, Miguel Arturo Gomez; Malvezzi, Cecilia; https://lattes.cnpq.br/4002542600895632; https://lattes.cnpq.br/3785649365408868
El trabajo de Conclusión de Curso (TCC) del cuso de medicina de la UFSCar consiste en una explicación critico-reflexiva sobre las experiencias profesionales y personales que sucedieron a lo largo de la carrera, en mi caso entre los años 2015 y 2020. El contenido es esencialmente de carácter subjetivo, en el que relatare mis experiencias académicas y practicas vividas durante estos años. En esta narrativa, presentaré en orden cronológica los ciclos que componen el curso de medicina, como también las experiencias en actividades electivas y extracurriculares.