H I studies of the sculptor group galaxies

Results from large-scale mapping of the H I gas in the Sculptor group are presented. From this kinematic analysis, a mean global (M/L sub B) approx. equals 9 solar maximum/solar luminosity (at the last observed velocity point) is found for the individual galaxies. This is only a factor approx. 10 smaller than the (M/L sub B) dyn approx. equals 90 solar maximum/solar luminosity derived from a dynamical study of the whole group. The parameters derived from the mass models suggest that most of the unseen matter has to be concentrated around the luminous galaxies. Under the assumption that the Sculptor group is a virialized system and that all the mass is associated with the galaxies, an upper limit of approx. 40 kpc is derived for the size of the dark halos present in the five late-type spirals of the group

The Recent Star Formation in Sextans A

We investigate the relationship between the spatial distributions of stellar populations and of neutral and ionized gas in the Local Group dwarf irregular galaxy Sextans A. This galaxy is currently experiencing a burst of localized star formation, the trigger of which is unknown. We have resolved various populations of stars via deep UBV(RI)_C imaging over an area with diameter ~5farcm3. We have compared our photometry with theoretical isochrones appropriate for Sextans A, in order to determine the ages of these populations. We have mapped out the history of star formation, most accurately for times ≾ 100 Myr. We find that star formation in Sextans A is correlated both in time and space, especially for the most recent (≾ 12 Myr) times. The youngest stars in the galaxy are forming primarily along the inner edge of the large H I shell. Somewhat older populations, ≾ 50 Myr, are found inward of the youngest stars. Progressively older star formation, from ~50–100 Myr, appears to have some spatially coherent structure and is more centrally concentrated. The oldest stars we can accurately sample appear to have approximately a uniform spatial distribution, which extends beyond a surface brightness of μ_B ≃ 25.9 mag arcsec^(-2) (or, a radius r ≃ 2farcm3). Although other processes are also possible, our data provide support for a mechanism of supernova-driven expansion of the neutral gas, resulting in cold-gas pileup and compression along the H I shell and sequential star formation in recent times

Publications about physical Activities in the natural Environment of the spanish ph Ysical education ́s journals

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Publications about physical Activities in the natural Environment of the spanish ph Ysical education ́s journals

Resumen basado en el de la publicaciónTítulo, resumen y palabras clave también en inglésSe pretende concretar el volumen de publicaciones relacionadas con las Actividades Físicas en el Medio Natural por las revistas españolas desde el año 1992 hasta el 2013. Para ello se realizó una revisión documental descriptiva en 30 revistas españolas ingresadas en la plataforma DICE y relacionadas con la Educación Física y el Deporte. Tras la realización de la revisión documental, se introdujeron los resultados obtenidos en una base de datos y a raíz de esta se empezó a resolver el objeto de estudio. Los resultados muestran que el total de artículos publicados en este período de tiempo entre todas las revistas investigadas es de 267 artículos. Y que las revistas españolas publican cada vez más sobre las Actividades Físicas en el Medio Natural. Esto pone de manifiesto que estos contenidos están en auge en la investigación dentro de la ciencia de la Actividad Física y el Deporte.ES

Kalanchoe delagoensis "Morvedre"

12 p., fotografías, dibujos, mapas.[EN]We propose in this article the name of "Morvedre" for the horticultural variety mainly cultivated and escaped from cultivation in the Spanish Mediterranean coast of Kalanchoe delagoensis Eckl. & Zeyh. Key words: Alien plant, Kalanchoe delagoensis, cultivated plant, Spain[ES]Se propone en esta nota para la forma principalmente cultivada y escapada de cultivo en la costa mediterránea española, de la especie Kalanchoe delagoensis Eckl. & Zeyh., el nombre de "Morvedre". Palabras clave: Alóctona, Kalanchoe delagoensis, planta cultivada, España.Peer reviewe

Kalanchoe daigremontiana Raym-Hamet & H Perrier ‘Iberian Coast’

14 p., fotografías, dibujos.[EN]In this article we propose the name ‘Iberian Coast’ for the horticultural variety mainly cultivated and escaped from cultivation in Valencia (Spain) of the species Kalanchoe daigremontiana Raym.-Hamet & H. Perrier.[ES]Se propone el término ‘Iberian Coast’ para designar a la variedad hortícola principalmente cultivada y naturalizada en la provincia de Valencia (España) de la especie Kalanchoe daigremontiana Raym.-Hamet & H. Perrier.Peer reviewe

Un nuevo cultivar de Luther Burbank presente en la flora alóctona de la Península Ibérica, Opuntia ficus-indica "Vertex"

20 p., fotografías, mapas, dibujos.[EN]We quote for the first time as alien plant in the Iberian Peninsula and in Europe a variety of Opuntia ficus-indica. This variety has morphological characteristics similar to the horticultural variety "Vertex", which was introduced to the market during the late 19th century and early 20th century by the American horticulturist Luther Burbank.[ES]Damos noticia por primera vez en la Península Ibérica y en Europa de la presencia como alóctona de una variedad hortícola de Opuntia ficus-indica con características morfológicas similares a la variedad hortícola "Vertex", una de las introducidas en el mercado a finales del siglo XIX-principios del siglo XX por el horticultor estadounidense Luther Burbank.Peer reviewe

The Most Demanding Exercise in Different Training Tasks in Professional Female Futsal: A Mid-Season Study through Principal Component Analysis

The contextual factors related to training tasks can play an important role in how a player performs and, subsequently, in how a player trains to face a competition. To date, there has been no study that has investigated the most demanding exercise in different training tasks in female futsal. Therefore, this study aimed to determine the most demanding efforts during different training tasks in a cohort study conducted in professional biological women futsal players using principal component analysis (PCA). A total of 14 elite women futsal players (age = 24.34 ± 4.51 years; height = 1.65 ± 0.60 m; body mass = 63.20 ± 5.65 kg) participated in this study. Seventy training sessions of an elite professional women’s team were registered over five months (pre-season and in-season). Different types of exercises were grouped into six clusters: preventive exercises; analytical situations; exercises in midcourt; exercises in ¾ of the court; exercises in full court; superiorities/inferiorities. Each exercise cluster was composed of 5–7 principal components (PCs), considering from 1 to 5 main variables forming each, explaining from 65 to 75% of the physical total variance. A total of 13–19 sub-variables explained the players’ efforts in each training task group. The first PCs to explain the total variance of training load were as follows: preventive exercises (accelerations; ~31%); analytical situations (impacts; ~23%); exercises in midcourt (high-intensity efforts; ~28%); exercises in ¾ of the court (~27%) and superiorities/inferiorities (~26%) (aerobic/anaerobic components); exercises in full court (anaerobic efforts; ~24%). The PCs extracted from each exercise cluster provide evidence that may assist researchers and coaches during training load monitoring. The descriptive values of the training load support a scientific base to assist coaches in the planning of training schedules

The Recent Star Formation in Sextans A

We investigate the relationship between the spatial distributions of stellar populations and of neutral and ionized gas in the Local Group dwarf irregular galaxy Sextans A. This galaxy is currently experiencing a burst of localized star formation, the trigger of which is unknown. We have resolved various populations of stars via deep UBV(RI)_C imaging over an area with diameter ~5farcm3. We have compared our photometry with theoretical isochrones appropriate for Sextans A, in order to determine the ages of these populations. We have mapped out the history of star formation, most accurately for times ≾ 100 Myr. We find that star formation in Sextans A is correlated both in time and space, especially for the most recent (≾ 12 Myr) times. The youngest stars in the galaxy are forming primarily along the inner edge of the large H I shell. Somewhat older populations, ≾ 50 Myr, are found inward of the youngest stars. Progressively older star formation, from ~50–100 Myr, appears to have some spatially coherent structure and is more centrally concentrated. The oldest stars we can accurately sample appear to have approximately a uniform spatial distribution, which extends beyond a surface brightness of μ_B ≃ 25.9 mag arcsec^(-2) (or, a radius r ≃ 2farcm3). Although other processes are also possible, our data provide support for a mechanism of supernova-driven expansion of the neutral gas, resulting in cold-gas pileup and compression along the H I shell and sequential star formation in recent times