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Use of anabolic steroids by gymgoers: Reasons and perspectives
Charal, Claudiana Marcela Siste; Freire, Fernando Carlos Messias; Alexandrino, Eduardo Gauze; Marçal, Danilo Francisco da Silva; Westphal, GreiceIntroduction: The media, the gym and the practice of bodybuilding are contributing factors to the influence of the search for a perfect body in the young population. With the popularization of social networks, fitness muses, bloggers and models are great incentives for the consumption and sale of supplements, vitamins and anabolics, without any scientific evidence or recommendation from a health professional. O...
Dinâmica de íons em células eletrolíticas
Freire, Fernando Carlos MessiasWe analyze the dynamical response of the influence of the ions present in a liquid crystal submitted to a steplike external voltage. The time evolution of the system is investigated by solving the continuity equation, for the bulk and surface densities, taking into account the current of drift and diffusion. As well as, the influence of the adsorption at the interfaces on the transient phenomena occurring is in...
Cálculo das constantes elásticas de um cristal líquido nemático: interação quad...
Freire, Fernando Carlos MessiasThe elastic constants of an Nematic Liquid Crystals (NLC) system are evaluated by assuming that the quadrupolar interaction is the only one responsible for the NLC phase. We consider a more realistic and general situation, by assuming an interaction volume of ellipsoidal shape and a screened intermolecular (quadrupolar) potential. The introduction of an anisotropic interaction volume permits a detailed investig...