450 research outputs found
Conocimientos y actitudes ante la Voluntad Anticipada en profesionales de la salud del Centro Médico “Lic. Adolfo López Mateos”, Toluca, México
Introducción: La Voluntad Anticipada es una declaración mediante la cual una persona mayor de edad, con capacidad mental suficiente y libremente, expone las instrucciones que se deben tener en cuenta respecto a la atención sanitaria que desea recibir en situaciones en las cuales no pueda ya expresar personalmente su voluntad.
Objetivo: Determinar el nivel de conocimientos y actitudes que tienen los profesionales de la salud de Centro Médico “Lic. Adolfo López Mateos” con respecto a la Ley de Voluntad Anticipada del Estado de México.
Método y materiales: Se aplicaron 265 encuestas que incluían el conocimiento y la actitud que tienen los profesionales de la salud sobre la Ley de Voluntad Anticipada del Estado de México.
Resultados: El grupo mayoritario abarcó de 25-29 años con el 31%, el turno mayoritario fue el de la Jornada Especial con 34%, el 60% de los encuestados fueron mujeres y 40% hombres, el 94% no había leído la Ley de Voluntad Anticipada inscrita en la gaceta oficial del Gobierno del Estado de México y el 6% restante respondió afirmativamente.
Conclusiones: La mayoría de los y las profesionales de salud refirieron no conocer la Ley inscrita en la gaceta oficial, lo que significa que hace falta difusión y promoción del tema; a pesar de eso, tuvieron una posición favorable hacia la voluntad anticipada y demostraron tener noción sobre lo tratad
Convective motions and net circular polarization in sunspot penumbrae
We have employed a penumbral model, that includes the Evershed flow and
convective motions inside penumbral filaments, to reproduce the azimuthal
variation of the net circular polarization (NCP) in sunspot penumbrae at
different heliocentric angles for two different spectral lines. The theoretical
net circular polarization fits the observations as satisfactorily as penumbral
models based on flux-tubes. The reason for this is that the effect of
convective motions on the NCP is very small compared to the effect of the
Evershed flow. In addition, the NCP generated by convective upflows cancels out
the NCP generated by the downflows. We have also found that, in order to fit
the observed NCP, the strength of the magnetic field inside penumbral filaments
must be very close to 1000 G. In particular, field-free or weak-field filaments
fail to reproduce both the correct sign of the net circular polarization, as
well as its dependence on the azimuthal and heliocentric angles.Comment: Accepted for publication in the Astrophysical Journal. 10 pages, 7
figures (3 in color). Uses emulatedap
A jet-cloud interaction in the 3C 196 environment
Powerful radio galaxies and radio-loud quasars at high redshifts are
frequently associated with extended emission-line regions (EELRs). Here we
investigate the [O II] EELR around the quasar 3C 196 at z=0.871 using integral
field spectroscopy. We also detect extended [Ne II] emission at a distance of
about 30 kpc from the core. The emission is aligned with the radio hot spots
and shows a redshifted and a blueshifted component with a velocity difference
of ~800 km s^-1. The alignment effect and large velocities support the
hypothesis that the EELR is caused by a jet-cloud interaction, which is
furthermore indicated by the presence of a pronounced bend in the radio
emission at the location of the radio hot spots. We also report observations of
two other systems which do not show as clear indications of interactions. We
find a weaker alignment of an [O II] EELR from the z=0.927 quasar 3C 336, while
no EELR is found around the core-dominated quasar OI 363 at z=0.63.Comment: 7 pages, accepted for publication in A&
APROXIMACIÓN A LA COMPLEJIDAD A TRAVÉS DE LA TURBULENCIA EN LAS ORGANIZACIONES. CASO HERNANDO TRUJILLO
When today we talk about complexity, we must take into account that there is complex thinking, widely exposed by E. Morin and the complexity sciences where behaviors are analyzed and that for this case, it is the organizations, where they move away from the balance and that have to do with non-linearity as a phenomenon where turbulence, such as unstable behavior of customers, suppliers, geographical location and competition, tend to persist. The others that tend to balance are those that perish and from which the case of the Colombian company is taken as an example. In these times, it is necessary for decision makers to delve into these phenomena that have to do with behaviors that occur in other instances such as biological and social, hence that is conceptualized with the ecology, to see what decisions can be taken as a whole, within the universal behaviors of living beings. For this case, a conceptualization of authors of the field of ecology is made as a complex phenomenon where turbulence is specifically emphasized in the Colombian textile sector and as a reference of four companies where it is seen how making decisions according to homogeneous behaviors can lead to closure of the companies, specific case of the company Hernando Trujillo, which after decades in the market, closes in 2013. The analysis is done through the methodology called Structural Analysis of the strategic sectors. AESECuando hoy se habla de complejidad se debe tener en cuenta que hay pensamiento complejo, expuesto ampliamente por E. Morín y de las ciencias de la complejidad donde se analizan comportamientos y que, para este caso, es el de las organizaciones, donde estas se alejan del equilibrio y que tienen que ver con la no linealidad como fenómeno donde la turbulencia, como comportamiento inestable tanto de los clientes, proveedores, ubicación geográfica y competencia, son las que tienden a perdurar. Las otras que tienden al equilibrio, son las que perecen y de la que se toma como ejemplo el caso de la empresa colombiana. En estos tiempos, es necesario que los tomadores de decisión se adentren en estos fenómenos que tienen que ver con comportamientos que se dan en otras instancias como los biológicos y sociales, de ahí que se conceptualice con la ecología, para ver que decisiones pueden tomarse como un todo, dentro de los comportamientos universales de los seres vivos. Para el caso se hace una conceptualización de autores del campo de la ecología como un fenómeno complejo donde se enfatiza la turbulencia específicamente en el sector textil colombiano y como referente de cuatro empresas donde se ve como el tomar decisiones de acuerdo con comportamientos homogéneos puede llevar al cierre de las empresas, caso específico la empresa Hernando Trujillo, que después de décadas en el mercado, cierra en el 2013. El análisis se hace por medio de la metodología denominada Análisis Estructural de los Sectores estratégicos. AESE
Observational hints of radial migration in disc galaxies from CALIFA
Context. According to numerical simulations, stars are not always kept at their birth galactocentric distances but they have a tendency to migrate. The importance of this radial migration in shaping galactic light distributions is still unclear. However, if radial migration is indeed important, galaxies with different surface brightness (SB) profiles must display differences in their stellar population properties.
Aims: We investigate the role of radial migration in the light distribution and radial stellar content by comparing the inner colour, age, and metallicity gradients for galaxies with different SB profiles. We define these inner parts, avoiding the bulge and bar regions and up to around three disc scale lengths (type I, pure exponential) or the break radius (type II, downbending; type III, upbending).
Methods: We analysed 214 spiral galaxies from the CALIFA survey covering different SB profiles. We made use of GASP2D and SDSS data to characterise the light distribution and obtain colour profiles of these spiral galaxies. The stellar age and metallicity profiles were computed using a methodology based on full-spectrum fitting techniques (pPXF, GANDALF, and STECKMAP) to the Integral Field Spectroscopic CALIFA data.
Results: The distributions of the colour, stellar age, and stellar metallicity gradients in the inner parts for galaxies displaying different SB profiles are unalike as suggested by Kolmogorov-Smirnov and Anderson-Darling tests. We find a trend in which type II galaxies show the steepest profiles of all, type III show the shallowest, and type I display an intermediate behaviour.
Conclusions: These results are consistent with a scenario in which radial migration is more efficient for type III galaxies than for type I systems, where type II galaxies present the lowest radial migration efficiency. In such a scenario, radial migration mixes the stellar content, thereby flattening the radial stellar properties and shaping different SB profiles. However, in light of these results we cannot further quantify the importance of radial migration in shaping spiral galaxies, and other processes, such as recent star formation or satellite accretion, might play a role
Larger in the disc of isolated active spiral galaxies than in their non-active twins
We present a comparison of the spin parameter , measured in a
region dominated by the galaxy disc, between 20 pairs of nearby
(0.005z0.03) seemingly isolated twin galaxies differing in nuclear
activity. We find that 80--82% of the active galaxies show higher values of
than their corresponding non-active twin(s), indicating larger
rotational support in the AGN discs. This result is driven by the 11 pairs of
unbarred galaxies, for which 100% of the AGN show larger than their
twins. These results can be explained by a more efficient angular momentum
transfer from the inflowing gas to the disc baryonic matter in the case of the
active galaxies. This gas inflow could have been induced by disc or bar
instabilities, although we cannot rule out minor mergers if these are prevalent
in our active galaxies. This result represents the first evidence of
galaxy-scale differences between the dynamics of active and non-active isolated
spiral galaxies of intermediate stellar masses (10
M) in the Local Universe.Comment: 11 pages, 7 figures. Accepted for publication in A&A Letter
Spatial distribution and statistical properties of small-scale convective vortex-like motions in a quiet Sun region
High-resolution observations of a quiet Sun internetwork region taken with
the Solar 1-m Swedish Telescope in La Palma are analyzed. We determine the
location of small-scale vortex motions in the solar photospheric region by
computing the horizontal proper motions of small-scale structures on time
series of images. These plasma convectively-driven swirl motions are associated
to: (1) downdrafts (that have been commonly explained as corresponding to sites
where the plasma is cooled down and hence returned to the interior below the
visible photospheric level), and (2) horizontal velocity vectors converging
into a central point. The sink cores are proved to be the final destination of
passive floats tracing plasma flows towards the center of each vortex. We
establish the occurrence of these events to be 1.4 x 10^(-3) and 1.6 x 10^(-3)
vortices Mm^(-2) min^(-1) respectively for two time series analyzed here.Comment: 8 pages, 6 figures. Accepted for publication in Monthly Notices of
the Royal Astronomical Societ
Central star formation and metallicity in CALIFA interacting galaxies
We use optical integral-field spectroscopic (IFS) data from 103 nearby
galaxies at different stages of the merging event, from close pairs to merger
remnants provided by the CALIFA survey, to study the impact of the interaction
in the specific star formation and oxygen abundance on different galactic
scales. To disentangle the effect of the interaction and merger from internal
processes, we compared our results with a control sample of 80 non-interacting
galaxies. We confirm the moderate enhancement (2-3 times) of specific star
formation for interacting galaxies in central regions as reported by previous
studies; however, the specific star formation is comparable when observed in
extended regions. We find that control and interacting star-forming galaxies
have similar oxygen abundances in their central regions, when normalized to
their stellar masses. Oxygen abundances of these interacting galaxies seem to
decrease compared to the control objects at the large aperture sizes measured
in effective radius. Although the enhancement in central star formation and
lower metallicities for interacting galaxies have been attributed to tidally
induced inflows, our results suggest that other processes such as stellar
feedback can contribute to the metal enrichment in interacting galaxies.Comment: 9 pages, 9 figures. Accepted for publication in Astronomy &
Astrophysic
Spiral-like star-forming patterns in CALIFA early-type galaxies
Based on a combined analysis of SDSS imaging and CALIFA integral field
spectroscopy data, we report on the detection of faint (24 < {\mu}
mag/arcsec < 26) star-forming spiral-arm-like features in the periphery of
three nearby early-type galaxies (ETGs). These features are of considerable
interest because they document the still ongoing inside-out growth of some
local ETGs and may add valuable observational insight into the origin and
evolution of spiral structure in triaxial stellar systems. A characteristic
property of the nebular component in the studied ETGs, classified i+, is a
two-radial-zone structure, with the inner zone that displays faint
(EW(H\alpha)1{\AA}) low-ionization nuclear emission-line region (LINER)
properties, and the outer one (3{\AA}<EW(H\alpha)<~20{\AA}) HII-region
characteristics. This spatial segregation of nebular emission in two physically
distinct concentric zones calls for an examination of aperture effects in
studies of type i+ ETGs with single-fiber spectroscopic data.Comment: Accepted to A&A, 5 pages, 1 figur
Spectroscopic aperture biases in inside-out evolving early-type galaxies from CALIFA
Integral field spectroscopy studies based on CALIFA data have recently
revealed the presence of ongoing low-level star formation (SF) in the periphery
of ~10% of local early-type galaxies (ETGs), witnessing a still ongoing
inside-out galaxy growth process. A distinctive property of the nebular
component in these ETGs, classified i+, is a two-radial-zone structure, with
the inner zone displaying LINER emission with a H\alpha equivalent width
EW~1{\AA}, and the outer one (3{\AA}<EW<~20{\AA}) showing HII-region
characteristics. Using CALIFA IFS data, we empirically demonstrate that the
confinement of nebular emission to the galaxy periphery leads to a strong
aperture (or, redshift) bias in spectroscopic single-fiber studies of type i+
ETGs: At low redshift (<~0.45), SDSS spectroscopy is restricted to the inner
(SF-devoid LINER) zone, thereby leading to their erroneous classification as
"retired" galaxies (systems lacking SF and whose faint emission is powered by
pAGB stars). Only at higher z's the SDSS aperture can encompass the outer SF
zone, permitting their unbiased classification as "composite SF/LINER". We also
demonstrate that the principal effect of a decreasing aperture on the
classification of i+ ETGs via standard BPT emission-line ratios consists in a
monotonic up-right shift precisely along the upper-right wing of the "seagull"
distribution. Motivated by these insights, we also investigate theoretically
these biases in aperture-limited studies of inside-out growing galaxies as a
function of z. To this end, we devise a simple model, which involves an
outwardly propagating SF process, that reproduces the radial extent and
two-zone EW distribution of i+ ETGs. By simulating on this model the
spectroscopic SDSS aperture, we find that SDSS studies at z<~1 are
progressively restricted to the inner LINER-zone, and miss an increasingly
large portion of the H\alpha-emitting periphery.Comment: Accepted to A&A, 6 pages, 4 figure
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