8,379 research outputs found
Tolerance After Liver Transplantation: Where Are We?
info:eu-repo/semantics/publishedVersio
Narrative and the Maintenance of Great Lakes Native American Cultural Identity
This paper examines the relationship of the trickster character to the maintenance of Great Lakes Native American cultural identity by using interviews and literary analysis. The interviews gathered statements from participants about their personal experiences with narrative, and the social context of narrative, within their tribes. The literary analysis examines three stories in the Manabozho cycle: The theft of fire, Manabozho and wolf, and The flood. The themese in these stories fulfill all four of William Bascom\u27s four functions folklore. The hypothesis that narrative is a necessary factor of cultural maintenance has been supported by both the interviews and the literary analysis
Development of Head Space Sorptive Extraction Method for the Determination of Volatile Compounds in Beer and Comparison with Stir Bar Sorptive Extraction
A headspace sorptive extraction method coupled with gas chromatography-mass spectrometry (HSSE-GC-MS) was developed for the determination of 37 volatile compounds in beer. After optimization of the extraction conditions, the best conditions for the analysis were stirring at 1000 rpm for 180 min, using an 8-mL sample with 25% NaCl. The analytical method provided excellent linearity values (R-2 > 0.99) for the calibration of all the compounds studied, with the detection and quantification limits obtained being low enough for the determination of the compounds in the beers studied. When studying the repeatability of the method, it proved to be quite accurate, since RSD% values lower than 20% were obtained for all the compounds. On the other hand, the recovery study was successfully concluded, resulting in acceptable values for most of the compounds (80-120%). The optimised method was successfully applied to real beer samples of different types (ale, lager, stout and wheat). Finally, an analytical comparison of the optimised HSSE method, with a previously developed and validated stir bar sorptive extraction (SBSE) method was performed, obtaining similar concentration values by both methods for most compounds
A SINFONI view of Galaxy Centers: Morphology and Kinematics of five Nuclear Star Formation Rings
We present near-infrared (H- and K-band) integral-field observations of the
circumnuclear star formation rings in five nearby spiral galaxies. The data,
obtained at the Very Large Telescope with the SINFONI spectrograph, are used to
construct maps of various emission lines that reveal the individual star
forming regions ("hot spots") delineating the rings. We derive the
morphological parameters of the rings, and construct velocity fields of the
stars and the emission line gas. We propose a qualitative, but robust,
diagnostic for relative hot spot ages based on the intensity ratios of the
emission lines Brackett gamma, HeI, and [FeII]. Application of this diagnostic
to the data presented here provides tentative support for a scenario in which
star formation in the rings is triggered predominantly at two well-defined
regions close to, and downstream from, the intersection of dust lanes along the
bar with the inner Lindblad resonance.Comment: 45 pages incl. 4 tables and 12 (mostly color) figures. Accepted for
publication in AJ. A version with full resolution figures can be obtained at
ftp://ftp.rssd.esa.int/pub/tboeker/SINFONI/ms.pd
In the shadows of cancer. Leisure and subjective wellbeing of breast and ovarian cancer patients in Honduras, Nicaragua and Portugal
In contemporary societies, a significant proportion of women will be affected by breast or ovarian cancer over the course of their lives. Dealing with illness is known to impact profoundly on the general quality of life of women, but this assessment is usually made in clinical terms, and less attention is given to the social determinants of quality of life for cancer patients, and to the implications of cancer for their subjective wellbeing. In this article, we specifically discuss the impact of being engaged in a leisure activity for the subjective wellbeing of women experiencing breast or ovarian cancer. Based on an exploratory comparative study among Honduras, Nicaragua and Portugal, we analyze the influence of leisure engagement, country of residence, treatment and social support for the subjective wellbeing of women dealing with cancer, proposing a discussion on the intersections of wellbeing, leisure and illness. The research was supported by a survey applied to 128 women diagnosed with breast and ovarian cancer. Significant relationships were found amongst subjective wellbeing, leisure engagement, country and support from patients’ associations. Results highlight the need to consider the effects of leisure among cancer patients, and the importance of institutionalized support to improve their quality of life.info:eu-repo/semantics/publishedVersio
Au-Cu/SBA(Ti) based catalysts for photocatalytic applications
Comunicación a congresoIn this work, it has been synthesized several Au and Au-Cu alloy photocatalysts supported on two
different mesoporous supports: a non-commercial SBA-15 and a post-synthesis TiO2 modified SBA-15
(TiSBA-15), with which a high dispersion of TiO2 species have been achieved maintaining the SBA-15
structure. In addition, it has also been obtained highly dispersed Au nanoparticles confined in SBA-15
pore channels, as can be observed in Figure 1. The photocatalysts have been preliminary tested in the
preferential CO oxidation in a H2-rich stream (CO-PROX) at room temperature and atmospheric pressure
under simulated solar light irradiation. In spite of the very low gold and copper loading (1.5 wt% and
0.5wt% respectively), the catalysts resulted active and selective in the low temperature photo-CO-PROX.Universidad de Málaga, Campus de Excelencia Internacional Andalucía Tec
MILES extended: Stellar population synthesis models from the optical to the infrared
We present the first single-burst stellar population models which covers the
optical and the infrared wavelength range between 3500 and 50000 Angstrom and
which are exclusively based on empirical stellar spectra. To obtain these joint
models, we combined the extended MILES models in the optical with our new
infrared models that are based on the IRTF (Infrared Telescope Facility)
library. The latter are available only for a limited range in terms of both age
and metallicity. Our combined single-burst stellar population models were
calculated for ages larger than 1 Gyr, for metallicities between [Fe/H] = -0.40
and 0.26, for initial mass functions of various types and slopes, and on the
basis of two different sets of isochrones. They are available to the scientific
community on the MILES web page. We checked the internal consistency of our
models and compared their colour predictions to those of other models that are
available in the literature. Optical and near infrared colours that are
measured from our models are found to reproduce the colours well that were
observed for various samples of early-type galaxies. Our models will enable a
detailed analysis of the stellar populations of observed galaxies.Comment: 9 pages, 10 figures, published in A&
Formation and evolution of dwarf early-type galaxies in the Virgo cluster II. Kinematic Scaling Relations
We place our sample of 18 Virgo dwarf early-type galaxies (dEs) on the V-K -
velocity dispersion, Faber-Jackson, and Fundamental Plane (FP) scaling
relations for massive early-type galaxies (Es). We use a generalized velocity
dispersion, which includes rotation, to be able to compare the location of both
rotationally and pressure supported dEs with those of early and late-type
galaxies. We find that dEs seem to bend the Faber-Jackson relation of Es to
lower velocity dispersions, being the link between Es and dwarf spheroidal
galaxies (dSphs). Regarding the FP relation, we find that dEs are significantly
offset with respect to massive hot stellar systems, and re-casting the FP into
the so-called kappa-space suggests that this offset is related to dEs having a
total mass-to-light ratio higher than Es but still significantly lower than
dSph galaxies. Given a stellar mass-to-light ratio based on the measured line
indices of dEs, the FP offset allows us to infer that the dark matter fraction
within the half light radii of dEs is on average >~ 42% (uncertainties of 17%
in the K band and 20% in the V band), fully consistent with an independent
estimate in an earlier paper in this series. We also find that dEs in the
size-luminosity relation in the near-infrared, like in the optical, are offset
from early-type galaxies, but seem to be consistent with late-type galaxies. We
thus conclude that the scaling relations show that dEs are different from Es,
and that they further strengthen our previous findings that dEs are closer to
and likely formed from late-type galaxies.Comment: 14 pages, 9 figures, 2 appendixes. Accepted for publication in A&
Three essays in financial markets
A PhD Dissertation, presented as part of the requirements for the Degree of Doctor of Philosophy from the NOVA - School of Business and Economic
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