Satisfacción laboral y rendimiento del personal del Hospital II–E Bellavista, 2021

El presente estudio tuvo como objetivo establecer la relación entre la Satisfacción laboral y el rendimiento del personal del Hospital II-E Bellavista, 2021. La investigación fue de tipo básica, diseño no experimental, transversal y descriptivo correlacional, cuya población y muestra fue de 95 trabajadores. La técnica de recolección de datos fue la encuesta y como instrumento el cuestionario. Los resultados determinaron que el nivel de satisfacción laboral fue medio en 44.21%, el 29.74% como alto y el 26.32% como bajo. El rendimiento del personal fue medio en 46.32%, el 30.52% como bajo y el 23.16% como alto. Concluyendo que, existe relación positiva y significativa entre la satisfacción laboral y rendimiento del personal del Hospital II-E Bellavista, 2021, ya que el coeficiente de Rho de Spearman fue de 0.484 (correlación positiva moderada)

Selection of the appropriate winding setup in planar inductors with parallel windings

The use of parallel windings in high frequency planar inductors is a common practice. Since the planar technology, commonly PCB layers, limits the maximum layer thickness, the use of parallel windings is usually required in order to reduce the current density and losses. The distribution of the current through each parallel winding depends on the winding positioning and the frequency effects. This effect is especially important in gapped inductors, because the energy stored in the gap region determines the current distribution through the windings. Therefore, the winding positioning is a critical task in order to obtain a balanced current distribution through all the parallel winding

Automatized connection of the layers of planar transformers with parallel windings to improve the component behavior

Transformers with parallel windings are commonly used to reduce the losses in the windings. Windings losses depend on the winding positioning and the frequency effects because each winding affects the current sharing of itself and the neighboring windings. In this paper a methodology for determining the connections of the parallel windings that reduces the power losses (and temperature) in the windings of multi-winding transformers is presented. Other applications of the method, such as balanced current sharing and voltage drop reduction are also explored. In this paper a methodology for determining the connections of the parallel windings that reduces the power losses (and temperature) in the windings of multi-winding transformers is presented. Other applications of the method, such as balanced current sharing and voltage drop reduction are also explored

Detection of transposons modifying genome background in probiotics

The study of probiotic microorganisms is very interesting in the aquaculture field. Administration of live microorganisms in adequate amounts confers some benefits to the host (Kechagia et al. 2013). Even if Shewanella putrafaciens include pathogens and saprophytic strains related to fish spoilage and fish infection (Esteve, Merchán, and Alcaide 2016). The Pdp11 strain of Shewanella putrefaciens has been proved to provide beneficial effects in Sparus aurata (Chabrillón et al. 2005) and Solea senegalensis (Rodrigáñez et al. 2008). Studies focused on Pdp11 could hed light on the origin of this probiotic character. We have designed a bioinformatic workflow to detect transposons in the newly sequenced Pdp11 genome (Tapia-Paniagua et al, in press). Their presence interrupting genes account for a contribution to its probiotic character due to the lost of virulence or the gain of probiotic effect. The workflow was developed in Ruby programming language and provides: the genomic localisation of known transposons, host coding regions disrupted by complete transposons or their repeated insertion sequences, and transposons and coding regions disrupted identifiers, to stablish the putative functions of Pdp11 that could be affect by the transposons disruption. These results would support new possible hypothesis about the Pdp11 probiotic character since 14 coding regions related to S. putrefaciens were disrupted by transposons, 4 of which are directly involved in pathogenic mechanisms. This work was supported by co-funding by the European Union through the European Regional Development Fund (ERDF) 2014-2020 "Programa Operativo de Crecimiento Inteligente" together with Spanish AEI "Agencia Estatal de Investigación" to grants RTA2013-00068-C03, AGL2017-83370-C3-3-R and RTA2017-00054-C03-03.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Power losses calculations in windings of gapped magnetic components

A model is proposed for the calculation of the winding losses at the beginning of the design process of high frequency transformers and inductors. Although this kind of losses have been subject of investigation for years, their analytical calculation in gapped components is still limited, and the use of numerical analysis tools, such as finite elements analysis (FEA) tools, are commonly needed for winding characterization. A general 2-D equivalent analytical model for windings losses calculation in gapped magnetic components that shows very good results compared with FEA calculation is presented. The model can be integrated in design and optimization tools in order to evaluate the influence of the gap on the windings at the very early stages of the design process

Simple analytical approach for the calculation of winding resistance in gapped magnetic components

The Dowell expression is the most commonly used method for the analytic calculation of the equivalent resistance in windings of magnetic components. Although this method represents a fast and useful tool to calculate the equivalent resistance of windings, it cannot be applied to components that do not fit with classical 1D assumption, which is the case of gapped magnetic components. These structures can be accurately analyzed using finite-element analysis (FEA) with the time cost that this represents. Modifying the Dowelĺs equation, and taking advantage of the orthogonality between skin and proximity effects, a simple solution that allows its application in gapped magnetic components is proposed in this work, which results shows a very good accuracy compared with experimental measurements

Power losses calculations in windings of gapped magnetic components: The i2D method applied to flyback transformers

The improved 2-D equivalent analytical calculation method to estimate conductive losses in gapped magnetic components in a wide range of frequencies is extended to the calculations of conduction losses in flyback transformers. The i2D method, that is applicable to power inductor, is extended is extended to the winding loss calculation in gapped transformers, such as flyback transformers, by means of harmonic decomposition of the current though the windings that allows the proximity field calculation and, afterward, the estimation of the losses in the windings