El objetivo del presente estudio fue determinar la seroprevalencia del virus de la artritis-encefalitis viral caprina (AEVC) en cabras de cuatro provincias del departamento de Lima, Perú. Se recolectaron 381 muestras de sangre de cabras mayores a 12 meses de edad (325 hembras y 56 machos) de 89 rebaños criados en forma intensiva (n=3), semiextensiva (n=40) y transhumante (n=46). La detección de anticuerpos en suero contra el AEVC se realizó mediante la prueba de ELISA de competición. El 0.26 ± 0.09% (1/381) de las cabras tuvieron anticuerpos contra el AEVC. El animal seropositivo perteneció a un rebaño de crianza semiextensiva del distrito de Huaral. Al evaluar todos los animales mayores de 12 meses (n=103) de ese rebaño se encontraron otros nueve animales seropositivos. Las 10 cabras seropositivas fueron hembras de 2 a 5 años de edad, clínicamente normales, representando 9.7%...

The seroprevalence of caprine artritis-encephalitis virus (CAEV) in four provinces of Lima Region, Peru was determined in 381 goat serum samples (325 females and 56 males) older than 12 months from 89 flocks reared under intensive (n=3), semiextensive (n=49) and transhumant (n=46) production systems. The detection of antibodies against CAEV was done by a competitive-inhibition ELISA test. The overall seroprevalence of CAEV was 0.26 ± 0.09% (1/381). The seropositive goat belonged to one flock from Huaral district. The serology of all animals older than 12 months in this flock resulted in other nine seropositive goats. The 10 animals were clinically normal and represented 9.7% (10/ 103) of seroprevalence of CAEV in the flock. All bucks were negative. The results indicate that CAEV has a low seroprevalence in goats in Lima.

Several control schemes specifically designed to operate inverter-based industrial microgrids during voltage sags have been recently proposed. This paper first classifies these control schemes in three categories and then performs a comparative analysis of them. Representative control schemes of each category are selected, described and used to identify the main features and performance of the considered category. The comparison is based on the evaluation of several indexes, which measure the power quality of the installation and utility grid during voltage sags, including voltage regulation, reactive current injection and transient response. The paper includes selected simulation results from a 500 kVA industrial microgrid to validate the expected features of the considered control schemes. Finally, in view of the obtained results, the paper proposes an alternative solution to cope with...