The hyperon-nucleon interaction: conventional versus effective field theory approach

Hyperon-nucleon interactions are presented that are derived either in the conventional meson-exchange picture or within leading order chiral effective field theory. The chiral potential consists of one-pseudoscalar-meson exchanges and non-derivative four-baryon contact terms. With regard to meson-exchange hyperon-nucleon models we focus on the new potential of the Juelich group, whose most salient feature is that the contributions in the scalar--isoscalar (\sigma) and vector--isovector (\rho) exchange channels are constrained by a microscopic model of correlated \pi\pi and KKbar exchange.Comment: 28 pages, 8 figures, submitted to Lecture Notes in Physic

Platelet microaggregation in sepsis examined by quartz crystal microbalance with dissipation technology

Antiplatelet therapies remain an area of potential interest for the treatment of sepsis; however, studies of platelet aggregation in sepsis have yielded conflicting results. We examined platelet aggregation patterns in patients with septic shock using quartz crystal microbalance with dissipation technology, a microfluidic device capable of measuring platelet microaggregate formation under flow conditions. Platelet aggregation was increased in the washed platelet samples of septic patients. Conversely, these same platelets aggregated less than healthy controls when examined in their plasma

Ureterocele ectópica em cão: relato de caso

Relataram-se o quadro clínico, o diagnóstico, o tratamento e o acompanhamento de um cão com ureterocele ectópica e hidronefrose/hidroureter associados. Após as informações obtidas nos exames laboratoriais e de diagnóstico por imagem, o animal foi submetido à ureterocelectomia e à neoureterostomia. O cão apresentou evolução favorável após a conduta terapêutica. Apesar de pouco frequente, a ureterocele deve ser considerada como diagnóstico diferencial em animais jovens com histórico de incontinência urinária