2D kinematics of the edge-on spiral galaxy ESO 379-G006

We present a kinematical study of the nearly edge-on galaxy ESO 379-G006 that shows the existence of extraplanar ionized gas. With Fabry-Perot spectroscopy at H-alpha, we study the kinematics of ESO 379-G006 using velocity maps and position-velocity diagrams parallel to the major and to the minor axis of the galaxy. We build the rotation curve of the disk and discuss the role of projection effects due to the fact of viewing this galaxy nearly edge-on. The twisting of the isovelocities in the radial velocity field of the disk of ESO 379-G006 as well as the kinematic asymmetries found in some position-velocity diagrams parallel to the minor axis of the galaxy suggest the existence of deviations to circular motions in the disk that can be modeled and explained with the inclusion of a radial inflow probably generated by a bar or by spiral arms. We succeeded in detecting extraplanar Diffuse Ionized Gas in this galaxy. At the same time, from the analysis of position-velocity diagrams, we found some evidence that the extraplanar gas could lag in rotation velocity with respect to the midplane rotation.Comment: 61 pages, 15 figures. Accepted for publication in A

Systems and Methods for Noise Mitigation for Hybrid and Electric Aircraft

A system and method of noise mitigation for hybrid and electric aircraft, the aircraft having a controllable pitch propeller or rotor(s) with a plurality of blades. The propeller or rotor(s) are driven by a drive system to provide thrust for the aircraft, and the blades of the propeller or rotor(s) are further movable about pivot axis to vary a pitch thereof. A controller on-board the aircraft is operable to cause rotation or movement of the blades of the propeller or rotor(s) about their pivot axis to alter and/or focus at least one aspect of the propeller generated noise to reduce or mitigate such noise while maintaining a substantially constant thrust, altitude, and/or air speed of the aircraft

Systems and Methods for Noise Mitigation for Hybrid and Electric Aircraft

A system and method of noise mitigation for hybrid and electric aircraft, the aircraft having a controllable pitch propeller or rotor(s) with a plurality of blades. The propeller or rotor(s) are driven by a drive system to provide thrust for the aircraft, and the blades of the propeller or rotor(s) are further movable about pivot axis to vary a pitch thereof. A controller on-board the aircraft is operable to cause rotation or movement of the blades of the propeller or rotor(s) about their pivot axis to alter and/or focus at least one aspect of the propeller generated noise to reduce or mitigate such noise while maintaining a substantially constant thrust, altitude, and/or air speed of the aircraft

Socialization of the elderly in outdoor health circuits

En los parques biosaludables, originalmente concebidos para la población madura y anciana, se encuentran usuarios de diferentes edades y con distintas formas de entender la actividad física. El presente trabajo intenta examinar las relaciones de las personas mayores con el resto de usuarios para determinar en qué medida dichos parques pueden cumplir alguna función social más allá del fomento de hábitos saludables. Para ello se ha llevado a cabo una serie de observaciones, participantes y no participantes, en tres parques de la ciudad de Granada, donde se ha visto que, si bien existe una proporción minoritaria pero importante de usuarios jóvenes (aproximadamente un tercio del total), estos tienden a evitar una interacción que parte de los usuarios de mayor edad buscan expresamente

Analysis of the sporting context of Spanish female competitive cyclists and triathletes

El objetivo del presente estudio fue conocer y comparar las características psicosociales de las ciclistas y triatletas federadas en España estableciendo unas pautas de actuación que mejoren su situación en el deporte de competición. Se analizan dos deportes con aspectos comunes (uso de la bicicleta en competición, participantes que realizan ambos deportes…) y diferenciadores (deporte clásico vs deporte moderno), con el objeto de descubrir las posibles diferencias y/o similitudes entre ambos. En este estudio descriptivo participaron 80 ciclistas y 126 triatletas. Se determinó el perfil sociodemográfico promedio de las ciclistas y triatletas mediante 2 cuestionarios semiestructurados que permitieron definirlas como deportistas a) amateurs con tendencia competidora, b) iniciadas a una edad tardía en su especialidad deportiva, c) con una amplia experiencia deportiva, d) con un nivel alto de estudios completado o en curso, y e) pertenecientes a un estrato social medio. Tras el análisis de los resultados creemos que se hace necesario un cambio en la política deportiva de las federaciones deportivas así como iniciativas tendentes a la mejora de las condiciones de competición de estas deportistasThe aim of this study was to know and compare the psychosocial characteristics from Spanish under-licence female cyclists and triathletes establishing guidelines to improve their situation in competitive sport. We compared two sports with common aspects (use of a bicycle in competition, participants who participate in both sports...) and differentiating ones (classic sport vs. modern), with the aim of uncover potential differences and/or similarities between the two. 80 cyclists and 126 triathletes took part in this descriptive study. We determined the average socio-demographic profile of cyclists and triathletes through 2 semistructured questionnaires. The athletes’ average socio-sporting profile was defined as a) amateur with a competitive tendency; b) who became specialised in the sport at a late age; c) having vast sporting experience; d) having completed, or completing, a high level of education; e) belonging to the middle class. We believe a change in politics in sports federations is needed, as are initiatives to improve competition conditions for these athletesEstudio financiado por el Ministerio de Educación y ciencia (AP2009-0529) y por la Real Federación Española de Ciclism

Errors in kinematic distances and our image of the Milky Way Galaxy

Errors in the kinematic distances, under the assumption of circular gas orbits, were estimated by performing synthetic observations of a model disk galaxy. It was found that the error is < 0.5 kpc for most of the disk when the measured rotation curve was used, but larger if the real rotation curve is applied. In both cases, the error is significantly larger at the positions of the spiral arms. The error structure is such that, when kinematic distances are used to develope a picture of the large scale density distribution, the most significant features of the numerical model are significantly distorted or absent, while spurious structure appears. By considering the full velocity field in the calculation of the kinematic distances, most of the original density structures can be recovered.Comment: Accepted for publication in A

Development and Implementation of a Model-Driven Envelope Protection System for In-Flight Ice Contamination

Fatal loss-of-control (LOC) accidents have been directly related to in-flight airframe icing. The prototype system presented in this paper directly addresses the need for real-time onboard envelope protection in icing conditions. The combinations of a-priori information and realtime aerodynamic estimations are shown to provide sufficient input for determining safe limits of the flight envelope during in-flight icing encounters. The Icing Contamination Envelope Protection (ICEPro) system has been designed and implemented to identify degradations in airplane performance and flying qualities resulting from ice contamination and provide safe flight-envelope cues to the pilot. Components of ICEPro are described and results from preliminary tests are presented

Purification and characterization of a polygalacturonase produced by Wickerhamomyces anomalus

The aim of this work was to study the purification and physicochemical properties of an endo-polygalacturonase (PG) produced by Wickerhamomyces anomalus isolated from the citrus fruit peels. The enzyme was purified to homogeneity from the culture filtrate of W. anomalus grown on the yeast nitrogen base medium with glucose as carbon and energy source and citrus pectin as inductor. After anion-exchange chromatography and gel filtration chromatography, PG activity was eluted as a single peak, yielding 21% of the original activity. After dialysis and cation-exchange chromatography, only one fraction with PG activity was obtained, recovering 56% of initial enzyme activity and 1.3-fold increase in specific activity. The molecular weight of the enzyme was estimated as 43 kDa by the SDS-PAGE. The enzyme exhibited maximal activity at pH 4.2 and was stable over a pH range from 3.5 to 6.0 and up to 49°C for 10 h. The Vmax and Km values with polygalacturonic acid as substrate were 0.26 mmol/L. min and 0.173 mg/mL, respectively. Cations such as Cu+2, Fe+3, Mg+2, Mn+2 and Zn+2 did not show any significant effect on PG activity but K+ and Ca+2 reduced it. The purified PG was able to macerate cassava tissues.Centro de Investigación y Desarrollo en Fermentaciones Industriale

Specific increase of a mitochondrial RNA transcript in chronic ethanol-fed rats

AbstractAn in vitro transcription system utilizing isolated mitochondria has been used to study the effect of chronic ethanol consumption on liver mitochondrial DNA transcription. The results obtained showed an overall increase of RNA synthesis and a dramatic accumulation of a discrete polyadenylated RNA species. This effect is a consequence of the chronic ethanol consumption since these changes do not occur when isolated control mitochondria are incubated in the presence of ethanol