En este trabajo se diseñó e implemento un Analizador de Energía Eléctrica Trifásico basado en la aplicación Red Adaline para descomponer las tensiones intensidades cada fase sus armónicos. Para sensar usaron transformadores pequeña potencia y circuitos con amplificadores Operacionales. el sensado bobinas Rogowski, más una etapa subsiguiente circuito acondicionador señal cual realiza d...

In this work, the synthesis of β-AlF3–x(OH)x nanoparticles with very high specific surface area (SSA) using a microwave-assisted solvothermal process is reported. The influence parameters on morphology and SSA was investigated, nature solvent shown to have greatest impact. Five samples prepared different mixtures were deeply characterized by thermogravimetric analysis (TGA), N2 sorption, powder...

Aims. The knowledge of the properties of the youngest radio sources is very important in order to trace the earliest phase of the evolution of the radio emission. RXJ1459+3337, with its high turnover frequency (∼ 25 GHz) provides a unique opportunity to study this class of extreme objects. Methods. High-sensitivity multi-frequency VLA observations have been carried out to measure the flux-densi...

ObjectivesTo determine factors associated with parents who plan to vaccinate their children against influenza next year, especially those did not last year using a global survey.Study designA survey of caregivers accompanying aged 1-19 years old in 17 pediatric emergency departments 6 countries at the peak coronavirus disease 2019 (COVID-19) pandemic. Anonymous online included caregiver and chi...

Despite their high theoretical energy density, lithium–sulfur (Li–S) batteries are hindered by practical challenges including sluggish conversion kinetics and shuttle effect of polysulfides. Here, a nitrogen-doped continuous porous carbon (CPC) host anchoring monodispersed sub-10 nm FeS2 nanoclusters (CPC@FeS2) is reported as an efficient catalytic matrix for sulfur cathode. This shows strong a...

Although the ovaries produce majority of estrogens in women before menopause, estrogen is also synthesized peripheral tissues such as adipose tissue (AT). The typical female AT distribution, concentrated subcutaneous and femoro-gluteal regions, estrogen-mediated, but significance synthesis premenopausal poorly understood. Serum visceral homogenates from 28 undergoing non-malignant surgery were ...