our understanding of the patterns of ectopic activity that might arise as a consequence of the interaction of two pacemakers across a zone of block. Superfusion of the central segment of a dog Purkinje fiber with an ion-free isotonic sucrose solution provided a narrow region of block. The modulation of pacemaker activity by electrotonic potentials transmitted across the area of block was shown ...

Elevation of the urea clearance above the calculated normal value has been frequently observed in our clinic in children with the nephrotic syndrome. Previous studies of this phenomenon have shown it to be related to the intake of protein, but not induced by the oral administration of urea (1). Glomerular filtration, measured by inulin clearance, has been found by Emerson, Futcher, and Farr (2)...

A avaliação econômica da atividade agrícola é importante para determinar sua viabilidade. Assim o objetivo deste trabalho foi verificar a rentabilidade do cultivo orgânico de cenoura, sob manejos solo e diferentes semeadura. O experimento realizado em Rio Branco, AC, entre junho setembro 2018. Instalado delineamento blocos casualizados, parcelas subdivididas, sendo quatro manejos: cobertura veg...

The transport of a non-uniform bed load in river is complicated process and has enormous implications on the sediment flux anomalous riverbed evolution. To investigate characteristics related particle interactions, real-time monitoring system was developed to determine instant rate grain composition load. Doppler Velocimetry used synchronously measure fluctuating velocity high frequency. A tota...

Cone Dystrophy with Supernormal Rod Response (CDSRR) is a rare autosomal recessive disorder leading to severe visual impairment in humans, but little known about its unique pathophysiology. We have previously shown that CDSRR caused by mutations the KCNV2 (Potassium Voltage-Gated Channel Modifier Subfamily V Member 2) gene encoding Kv8.2 subunit, modulatory subunit of voltage-gated potassium (K...