First record of the epizoic red seaweed Polysiphonia carettia Hollenberg in the Mediterranean Sea.

Primera cita del alga roja epizoica Polysiphonia carettia Hollenberg en el mar Mediterráneo Key words. Caretta caretta, epibionts, Mediterranean Sea, Polysiphonia carettia. Palabras claves. Caretta carom, cpibiontes, Mar Mediterráneo, Polysiphonia carettia

Module 2. Photovoltaic energy

To start this PV module the main uses of photovoltaics will be detailed in order to get an idea of the possibilities that this technology offers for the development of modern living. Once the technological possibilities offered by this technology are known, the main factors that determine the efficiency of photovoltaic systems such as radiation, inclination, shade, losses and efficiency will be dealt with

Efficient implementation of general negation using abstract interpretation

While negation has been a very active área of research in logic programming, comparatively few papers have been devoted to implementation issues. Furthermore, the negation-related capabilities of current Prolog systems are limited. We recently presented a novel method for incorporating negation in a Prolog compiler which takes a number of existing methods (some modified and improved) and uses them in a combined fashion. The method makes use of information provided by a global analysis of the source code. Our previous work focused on the systematic description of the techniques and the reasoning about correctness and completeness of the method, but provided no experimental evidence to evalúate the proposal. In this paper, after proposing some extensions to the method, we provide experimental data which indicates that the method is not only feasible but also quite promising from the efficiency point of view. In addition, the tests have provided new insight as to how to improve the proposal further. Abstract interpretation techniques (in particular those included in the Ciao Prolog system preprocessor) have had a significant role in the success of the technique

Module 4: Small wind energy

To start this module it is necessary an introductive part about the use of wind energy to produce electricity. There are presented historical data of wind energy use, the evolution in time of wind turbines, basic constructive configurations of turbines with the principal elements components. There are presented the conditions for efficient exploitation and it is pointed out the importance of the development of electricity production using wind energy

Extremal problems on the general Sombor index of a graph

In this work we obtain new lower and upper optimal bounds of general Sombor indices. Specifically, we get inequalities for these indices relating them with other indices: the first Zagreb index, the forgotten index and the first variable Zagreb index. Finally, we solve some extremal problems for general Sombor indices.We would like to thank the reviewers by their careful reading of the manuscript and their suggestions which have improved the presentation of this work. The research of José M. Rodríguez and José M. Sigarreta was supported by a grant from Agencia Estatal de Investigación (PID2019-106433GB-I00/AEI/10.13039/501100011033), Spain. The research of Jose M. Rodríguez is supported by the Madrid Government (Comunidad de Madrid-Spain) under the Multiannual Agreement with UC3M in the line of Excellence of University Professors (EPUC3M23), and in the context of the V PRICIT (Regional Programme of Research and Technological Innovation)

Efectos de prebióticos sobre el crecimiento y la supervivencia de juveniles de Rhamdia quelen

Recientemente se han obtenido evidencias que demuestran las ventajas de la utilización de microorganismos benéficos o aditivos orgánicos como promotores del crecimiento en reemplazo de agentes quimioterapéuticos y antimicrobianos. El objetivo del presente trabajo fue evaluar el efecto de un alimento suplementado con un reparador metabólico a base de flavonoides (FLAVOXIN®) y otro con una combinación de ácidos orgánicos y pared de levadura (UNIWALL MOS 50®), sobre parámetros de crecimiento y supervivencia en juveniles de Rhamdia quelen, contrastados con un alimento control. Se utilizaron tres tratamientos alimentarios: control consistente en dieta comercial con 280g de proteínas/kg y 120g de lípidos/kg, dieta comercial suplementada con FLAVOXIN® (FL), y dieta comercial suplementada con UNIWALL MOS® (MOS), ambos productos adicionados a razón de 2g/kg. Nueve lotes de 42 ejemplares distribuidos en estanques de mampostería a cielo abierto de 16m3 fueron asignados de acuerdo a un diseño en cuadrado latino 3×3. La experiencia tuvo una duración total de 60 días, verificándose un incremento de peso en todos los tratamientos alimentarios, aunque sin diferencias estadísticamente significativas entre los mismos (p>0,05). El porcentaje de supervivencia fue de 89% en la dieta control y de 97 y 95% para FL y MOS, respectivamente, resultando ambos tratamientos estadísticamente superiores al control (p0.05). The survival rate was 89% for the control diet and 97 and 95% for FL and MOS, respectively. Both FL and MOS treatments resulted superior and statistically different to the control diet (p<0.05). The results show that the use of FLAVOXIN® and UNIWALL MOS 50® at the dose employed for this study has a positive effect on survival of R. quelen juveniles, without modifying growth parameters.Fil: Hernandez, David Roque. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Nordeste. Facultad de Ciencias Veterinarias. Instituto de Ictiologia del Nordeste; ArgentinaFil: Santinón, Juan José. Universidad Nacional del Nordeste. Facultad de Ciencias Veterinarias. Instituto de Ictiologia del Nordeste; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Sánchez, Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Nordeste. Facultad de Ciencias Veterinarias. Instituto de Ictiologia del Nordeste; ArgentinaFil: Domitrovic, Hugo Alberto. Universidad Nacional del Nordeste. Facultad de Ciencias Veterinarias. Instituto de Ictiologia del Nordeste; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Modeling of Drying Curves of Silica Nanofluid Droplets Dried in an Acoustic Levitator Using the Reaction Engineering Approach (REA) Model

The use of nanoparticles has become of great interest in different industrial applications. The spray drying of nanofluids forms nanostructured grains, preserving the nanoparticle properties. In this work, individual droplets of silica nanofluids were dried in an acoustic levitator. Tests were carried out under different experimental conditions to study the influence of the variables on the drying process. The drying curves were experimentally obtained and an REA model was used to obtain the theoretical curves and the correlations for the activation energy. The critical moisture content theoretically obtained was used to predict the grain diameter

Influence of Particle Size on the Drying Kinetics of Single Droplets Containing Mixtures of Nanoparticles and Microparticles: Modeling and Pilot-Scale Validation

The particle size of the primary particles is an important parameter influencing the drying behavior of droplets. In this work, the influence of particle size on the drying kinetics and grain properties was analyzed for droplets containing silica nanoparticles, microparticles, and mixtures of the two. The presence of microparticles was found to increase the drying rate and shrinkage of the droplet. The drying curves were modeled using a reaction engineering approach (REA) model. Finally, different suspensions were dried in a pilot-scale spray dryer in order to prove the influence of the particle size obtained in the levitator tests

Effects of an eccentric training protocol using gliding discs on balance and lower body strength in healthy adults

Impaired balance and lower body weakness are the main causes of falls, which are considered to be the major cause of fractures and head injuries in the elderly and are recognised as a serious health problem. The aim of this study is to observe the effect of eccentric training, introducing new technologies (gliding discs), on body composition, lower body strength, balance and quality of life. A quasi-experimental study was carried out with 56 healthy participants who were divided into an experimental group (n = 31) who underwent the protocol consisting of 12 training sessions and a control group (n = 25) who did not undergo the training. Before and after the intervention, all participants underwent a measurement of body composition, the SJ jump, balance with accelerometry and quality of life with the Short Form 12 Health Survey. In the experimental group, statistically significant improvements were found in the variables balance and lower body strength. The application of this training protocol improves lower body strength and the ability to control balance in the adult population