51 research outputs found
A sufficient condition for the lower semicontinuity of nonlocal supremal functionals in the vectorial case
In this note we present a sufficient condition ensuring lower semicontinuity
for nonlocal supremal functionals of the type where is a bounded open subset of and .Comment: to appear in European Journal of Mathematic
Extracorporeal Membrane Oxygenation Support as Treatment for Early Graft Failure After Heart Transplantation
Early graft failure (EGF) is a major risk factor for death after heart transplantation (Htx) accounting for >40% of deaths within 30âdays postoperatively. According to the last International Society for Heart and Lung Transplantation (ISHLT) consensus statement, the graft dysfunction (GD) is to be classified into primary (PGD), in case of an unknown triggering factor or secondary (SGD) where there is a discernible cause such as acute rejection, pulmonary hypertension, or known surgical complications. The diagnosis of GD is to be made within 24âh after completion of Htx surgery and a severity scale for GD should include mild, moderate, or severe grades based on specified criteria. Mechanical circulatory support (MCS) for GD should be considered when medical management is not sufficient to support the newly transplanted graft. Currently, extraâcorporeal membrane oxygenation (ECMO) is widely accepted as treatment of severe EGF, given its easy and quick setup, the system versatility, the optimal endâorgan perfusion provided, and the possibility of both biventricular and lung assistance by usage of a lowâcost single pump
The Smallest Scale of Hierarchy Survey (SSH). II. Extended star formation and bar-like features in the dwarf galaxy NGC 3741: recent merger or ongoing gas accretion?
Using Large Binocular Telescope deep imaging data from the Smallest Scale of
Hierarchy Survey (SSH) and archival Hubble Space Telescope data, we reveal the
presence of two elongated stellar features contiguous to a bar-like stellar
structure in the inner regions of the dwarf irregular galaxy NGC 3741. These
structures are dominated by stars younger than a few hundred Myr and
collectively are about twice as extended as the old stellar component. These
properties are very unusual for dwarf galaxies in the nearby Universe and
difficult to explain by hydro-dynamical simulations. From the analysis of
archival 21-cm observations, we find that the young stellar "bar" coincides
with an HI high-density region proposed by previous studies to be a purely
gaseous bar; we furthermore confirm radial motions of a few km/s, compatible
with an inflow/outflow, and derive a steeply-rising rotation curve and high HI
surface density at the center, indicating a very concentrated mass
distribution. We propose that the peculiar properties of the stellar and
gaseous components of NGC 3741 may be explained by a recent merger or ongoing
gas accretion from the intergalactic medium, which caused gas inflows towards
the galaxy center and triggered star formation a few hundred Myr ago. This
event may explain the young and extended stellar features, the bar-like
structure, the very extended HI disc and the central HI spiral arms. The high
central HI density and the steeply rising rotation curve suggest that NGC 3741
may be the progenitor or the descendant of a starburst dwarf
Human papillomavirus infection in honduran women with normal cytology
Contains fulltext :
80440.pdf (publisher's version ) (Closed access)OBJECTIVE: This study was aimed at estimating type-specific HPV prevalence and its cofactors among Honduran women with normal cytology in order to provide valuable information to health policymakers about the epidemiology of this important sexually transmitted infection. METHODS: A total of 591 women with normal cytology from Tegucigalpa, Honduras were interviewed and tested for HPV using the SPF10 LiPA25. A structured epidemiological questionnaire was administered to each woman. RESULTS: The overall HPV prevalence was 51%. Twenty-three types of HPV were detected; HPV 16, 51, 31, 18, and 11 were the most common. The highest prevalence of cancer associated HPV types (15.0%) was found in the women less than 35 years. Besides the association with age, the main independent predictors of HPV infection were the lifetime number of sexual partners and having a low socioeconomic status and less than 5 previous Pap smears. CONCLUSIONS: In the population studied, there was a broad diversity of HPV infections, with high-risk types being the most common types detected. The establishment of a well-characterized population with regard to the community prevalence of type-specific HPV infection will provide a valuable baseline for monitoring population effectiveness of an HPV vaccine
A lower semicontinuity result in SBD for surface integral functionals of Fracture Mechanics
A lower semicontinuity result is proved in the space of special vector fields with bounded deformation for a fracture
energetic model subject to noninterpenetration constraint.
A representation of the energy density which ensures lower semicontinuity, is also given
Some sufficient conditions for lower semicontinuity in SBD and applications to minimum problems
We provide some lower semicontinuity results in the space of special functions of bounded deformation for energies of the type
-a.e.on , and give some examples and applications to minimum problems, arising in Fracture Mechanics for linearly elastic materials
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