Contribución a la corología de las macroalgas marinas bentónicas del litoral malagueño. I.

Continuando con un proyecto sobre la corología de las macroalgas marinas bentónicas del litoral malagueño (Conde, 1981; Conde, 1984; Conde & Soto, 1986) reseñamos en esta nota la presencia en la zona de 5 nuevas especies, y se confirman otras 5, citadas anteriormente en la literatura o de arribazón. La ordenación de las especies se ha realizado según la propuesta de Gallardo ét al. (1985)

Aspectos ultraestructurales de algunas coralináceas (Rhodophyta) del Mediterráneo andaluz (S. de España).

En el presente artículo se estudian e interpretan al microscopio electrónico de barrido (M.E.B.) algunos caracteres cualitativos de siete especies de algas coralináceas del litoral andaluz, pertenecientes a los géneros Corallina,Jania y Amphiroa.Using the scanning electron microscopy some qualitatives characteristics of seven seaweeds species of the mediterranean coasts of Andalucía (S. of Spain), of the genus Corallina, Junio y Amphiroa have been studied

A thermodynamics-informed active learning approach to perception and reasoning about fluids

Learning and reasoning about physical phenomena is still a challenge in robotics development, and computational sciences play a capital role in the search for accurate methods able to provide explanations for past events and rigorous forecasts of future situations. We propose a thermodynamics-informed active learning strategy for fluid perception and reasoning from observations. As a model problem, we take the sloshing phenomena of different fluids contained in a glass. Starting from full-field and high-resolution synthetic data for a particular fluid, we develop a method for the tracking (perception) and simulation (reasoning) of any previously unseen liquid whose free surface is observed with a commodity camera. This approach demonstrates the importance of physics and knowledge not only in data-driven (gray-box) modeling but also in real-physics adaptation in low-data regimes and partial observations of the dynamics. The presented method is extensible to other domains such as the development of cognitive digital twins able to learn from observation of phenomena for which they have not been trained explicitly

Effects of combined plyometric, strength and running technique training program on change-of-direction and countermovement jump: A two-armed parallel study design on young soccer players

Context and objective: Players must be capable to have a good change-of-direction (COD) skill aiming to be the fastest as possible to react immediately to the opponent or even to help players to be more agile since COD is a physical determinant of agility. Thus, the aim of this study was to test the effects of a six-week combined training intervention in the COD and countermovement jump (CMJ) of young soccer players, while comparing with a control group only performing the regular field-based training sessions.Methods: A sample of 80 non-professional players (40 experimental group and 40 control group) between the ages of ten and twelve was taken [(Age: 10.70 & PLUSMN; 1.02)]. The tests that were carried out from the beginning to the end of the intervention were: CMJ test, 505COD Test and Illinois Test. Paired sample t-test was used for determining differences as a repeated measures analysis (pre- post). An ANCOVA test was performed using the pretest as a covariate and the times pre and post as factors.Results and conclusions: Repeated measures ANCOVA revealed significant influence of baseline level on the 5-0-5 COD (p = 0.001; r/2p=0.170), the Illinois (p = 0.018; r/2p=0.070) and the CMJ (p = 0.047; r/2p=0.050). Significant interactions group*time (p < 0.001; r/2p=0.137), 5-0-5 COD (p < 0.001; r/2p=0.274), and CMJ (p < 0.001; r/2p=0.392) were found, while no significant interactions were found in Illinois (p = 0.293; r/2p=0.014). The current research revealed that a combined training intervention consisting of strength training, plyometrics, and running techniques can be significantly beneficial for improving COD performance and CMJ.Universidad de Granada/CBU

Development of canopy vigour maps using UAV for site-specific management during vineyard spraying process

Site-specific management of crops represents an important improvement in terms of efficiency and efficacy of the different labours, and its implementation has experienced a large development in the last decades, especially for field crops. The particular case of the spray application process for what are called “specialty crops” (vineyard, orchard fruits, citrus, olive trees, etc.)FI-DGR grant from Generalitat de Catalunya (2018 FI_B1 00083). Research and improvement of Dosaviña have been developed under LIFE PERFECT project: Pesticide Reduction using Friendly and Environmentally Controlled Technologies (LIFE17 ENV/ES/000205)This research was partially funded by the “Ajuts a les activitats de demostració (operació 01.02.01 de Transferència Tecnològica del Programa de desenvolupament rural de Catalunya 2014-2020)” and an FI-DGR grant from Generalitat de Catalunya (2018 FI_B1 00083). Research and improvement of Dosaviña have been developed under the LIFE PERFECT project: Pesticide Reduction using Friendly and Environmentally Controlled Technologies (LIFE17 ENV/ES/000205).This research was partially funded by the “Ajuts a les activitats de demostració (operació 01.02.01 de Transferència Tecnològica del Programa de desenvolupament rural de Catalunya 2014-2020)” and an FI-DGR grant from Generalitat de Catalunya (2018 FI_B1 00083). Research and improvement of Dosaviña have been developed under LIFE PERFECT project: Pesticide Reduction using Friendly and Environmentally Controlled Technologies (LIFE17 ENV/ES/000205)Postprint (updated version

Determinación del coeficiente de rozamiento grano-pared en silos de pared corrugada mediante el método de los elementos discretos

El comportamiento de los materiales granulares almacenados en silos se ve afectado por varios parámetros, tanto aquellos característicos del material como de la geometría del silo. La determinación del coeficiente de rozamiento pared-partícula es uno de los parámetros de mayor importancia, siendo habituales en su determinación el uso de ensayos de corte directo. En el presente trabajo se estudia dicho coeficiente para el supuesto de una pared corrugada, el cual, teóricamente, debe representar a un valor efectivo que depende tanto del coeficiente de rozamiento grano-pared (para el caso de una pared lisa) y el ángulo de rozamiento interno del material. La determinación del rozamiento efectivo se ha realizado a través de la simulación por elementos discretos de un ensayo de corte sobre una pared corrugada. Los valores obtenidos han sido comparados con las prescripciones expuestas en la normativa vigente. La potencialidad del método de los elementos discretos permite el estudio de diversas configuraciones geométricas de la pared corrugada de los silos sin necesidad de realizar ensayos de laboratorio. Esto permitirá, en trabajos sucesivos, investigar la influencia de muy diversos factores en el valor del rozamiento efectivo grano-pared en este tipo de paredes. The mechanical behaviour of granular materials stored in silos is affected by numerous parameters, some of them being related to the characteristic of the stored materials and others to the geometry of the silo. The determination of the particle-wall friction coefficient (or wall friction) is of great importance and direct shear tests are usually conducted in order to obtain its value. In this work this variable is analysed for the case of a corrugated wall. This value is expected to be an effective value between the particle-wall friction coefficient (obtained for a flat wall) and the internal friction coefficient of the material under study. The effective wall friction determination has been carried out by using a discrete element model to simulate a direct shear test on a corrugated wall. The values obtained have been compared with prescriptions given in the current standards. The potential of the discrete element method allows different geometries of the silo corrugated wall to be considered without the necessity of developing laboratory tests. In future works it will allow the influence of numerous parameters on the effective wall friction in corrugated walls to be studied

Coverage analysis of Scopus: A journal metric approach

Our aim is to compare the coverage of the Scopus database with that of Ulrich, to determine just how homogenous it is in the academic world. The variables taken into account were subject distribution, geographical distribution, distribution by publishers and the language of publication. The analysis of the coverage of a product of this nature should be done in relation to an accepted model, the optimal choice being Ulrich’s Directory, considered the international point of reference for the most comprehensive information on journals published throughout the world. The results described here allow us to draw a profile of Scopus in terms of its coverage by areas – geographic and thematic – and the significance of peer-review in its publications. Both these aspects are highly pragmatic considerations for information retrieval, the evaluation of research, and the design of policies for the use of scientific databases in scientific promotion

Determinants of the acceptance of domestic use of recycled water by use type

In the circular economy model, the recycling of water is an alternative option that can reduce the pressure on water resources and guarantee water supply. This water policy measure is currently widespread in agriculture, but thus far few countries have opted for the domestic use of recycled water. In part, this is because it is the source of water with the lowest levels of public acceptance, which poses a threat to the success of the necessary investment. We analyse the degree of acceptance of recycled water for different domestic uses. The main contribution of this study is the analysis of the determinants of acceptance of recycled water by use type. The research was based on data from a questionnaire given to 844 university students in Andalusia, southern Spain. Results are obtained from ordinary least squares regressions that relate the determinants of recycled water acceptance to each of the water use classes. The 'yuck factor'—variously defined as ‘disgust’ or ‘psychological repugnance’—and the perceived risk are found to be the main determinants of the low degree of acceptance of recycled water for ingestion by people and pets. For other uses, such as body washing, laundry and cleaning, environ- mental awareness stands out as a determining factor. The main conclusion is that if au- thorities were to opt for measures to promote the use of recycled water, they should take into account the fact that the reluctance to use recycled water and the determinants of acceptance differ according to the intended useEuropean Regional Development FundSpanish Agencia Estatal de InvestigaciónRegional Government of Andalusi

Active Teaching Methodologies Improve Cognitive Performance and Attention-Concentration in University Students

The scientific literature shows a beneficial association between active methodologies and cognitive variables in university students. The purpose of this research was to determine the relationship between active methodologies in Physical Education and attention and concentration in a group of university students A total of forty-four undergraduate students from Pontifical University of Comillas of the Balearic Islands, Palma de Mallorca, Spain, participated in the present investigation (age: 20.48 +/- 1.37 years; height: 170.77 +/- 9.11 cm; weight: 68.84 +/- 8.29 kg; body mass index: 23.51 +/- 1.54). A D2 attention test was used to analyse their selective attention and concentration. Active methodologies were used to improve the students' physical fitness, reflected in their VO2max, which was evaluated using an incremental cycloergometer test. A correlation analysis performed between the active methodologies used to improve physical fitness measures and the D2 test revealed a negative moderate correlation between HRmax and TR, TA and TR- (r = -0.30, p = 0.04; r = -0.38, p = 0.01; and r = -0.35, p = 0.02, respectively), and a positive moderate correlation between HRmax and C (r = -0.32, p = 0.03). Finally, a negative moderate correlation was found between VT and C (r = -0.48, p = 0.001). This correlation analysis was reinforced by the results of a regression analysis. In summary, the present research revealed that university students with better aerobic fitness, achieved through active methodologies and reflected in VT and higher HRmax, obtained better values in TA, TR and C. University students should be encouraged to engage in regular physical activity through active methodologies that tend to increase physical fitness