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PV system with maximum power point tracking: modeling, simulation and experimen...

This paper focuses on the five parameters modeling, consisting on a current controlled generator, single-diode, a shunt and series resistances. Also, a simulation, identification of the parameters for a photovoltaic system and the maximum power point tracking based on VP„g„g is presented. The identification of parameters and the performance of the equivalent circuit model for a solar module simulation are valid...

Hypertrophic pyloric stenosis: tips and tricks for ultrasound diagnosis

We describe a systematic approach to the ultrasound (US) examination of the antropyloric region in children. US is the modality of choice for the diagnosis of hypertrophic pyloric stenosis (HPS). The imaging features of the normal pylorus and the diagnostic findings in HPS are reviewed and illustrated in this pictorial essay. Common difficulties in performing the examination and tips to help overcome them will ...

Hypertrophic pyloric stenosis: tips and tricks for ultrasound diagnosis

We describe a systematic approach to the ultrasound (US) examination of the antropyloric region in children. US is the modality of choice for the diagnosis of hypertrophic pyloric stenosis (HPS). The imaging features of the normal pylorus and the diagnostic findings in HPS are reviewed and illustrated in this pictorial essay. Common difficulties in performing the examination and tips to help overcome them will ...

Testicular epidermoid cyst: Ultrasound and MR typical findings with macroscopy ...

Testicular epidermoid cyst: Ultrasound and MR typical findings with macroscopy ...

Testicular epidermoid cyst: Ultrasound and MR typical findings with macroscopy ...

Testicular epidermoid cyst: Ultrasound and MR typical findings with macroscopy ...

Casimir effect for differential forms in real compact hyperbolic spaces

We calculate the Casimir energy associated with abelian gauge fields in real compact hyperbolic spaces. The cosmological applications of the vacuum energies are briefly considered.

Thermodynamics of abelian forms in real compact hyperbolic spaces

We analyze gauge theories based on abelian p-forms in real compact hyperbolic manifolds. The explicit thermodynamic functions associated with skew-symmetric tensor fields are obtained via zeta-function regularization and the trace tensor kernel formula. Thermodynamic quantities in the high-temperature expansions are calculated and the entropy/energy ratios are established.