LOS PEROMYSCUS (RODENTIA: MURIDAE) EN LA COLECCIÓN DE MAMÍFEROS DE LA UNIVERSIDAD AUTÓNOMA METROPOLITANA-UNIDAD IZTAPALAPA (UAMI)

We examined the 3704 specimens of rodents of the genera Habromys, Osgoodomys and Peromyscus, except those from the Mexican State of Tlaxcala. Mostly of them are from localities of the Mexican Transvolcanic Belt. We also include those specimens from marginal or occasional fieldwork in different parts of the country, as well as those given or permanent deposit in the Mammal Collection of UAMI. All of them belong to the following species Habromys lophurus, Osgoodomys banderanus, Peromyscus aztecus, P. beatae, P. bullatus, P. difficilis, P. eremicus, P. furvus, P. gratus, P. guatemalensis, P. hylocetes, P. leucopus, P. levipes, P. maniculatus, P. megalops, P. melanocarpus, P. melanophrys, P. melanotis, P. mexicanus, P. ochraventer, P. perfulvus, P. simulus, P. spicilegus, P. yucatanicus, and P. zarhynchus.Se examinaron 3704 ejemplares de ratones de los géneros Habromys, Osgoodomys y Peromyscus, excepto los de Tlaxcala. La mayoría de los ejemplares proceden de localidades del Eje Volcánico Transversal, aunque también se incluyen los de capturas marginales en otras regiones del país, así como los donados o que en calidad de depósito permanente se albergan en la Colección. Por lo anterior, se consignan ejemplares de las especies Habromys lophurus, Osgoodomys banderanus, Peromyscus aztecus, P. beatae, P. bullatus, P. difficilis, P. eremicus, P. furvus, P. gratus, P. guatemalensis, P. hylocetes, P. leucopus, P. levipes, P. maniculatus, P. megalops, P. melanocarpus, P. melanophrys, P. melanotis, P. mexicanus, P. ochraventer, P. perfulvus, P. simulus, P. spicilegus, P. yucatanicus y P. zarhynchus

Overview of processing techniques for surface electromyography signals

Surface electromyography (sEMG) is a technology to assess muscle activation, which is an important component in applications related to diagnosis, treatment, progression assessment, and rehabilitation of specific individuals' conditions. Recently, sEMG potential has been shown, since it can be used in a non-invasive manner; nevertheless, it requires careful signal analysis to support health professionals reliably. This paper briefly described the basic concepts involved in the sEMG, such as the physiology of the muscles, the data acquisition, the signal processing techniques, and classification methods that may be used to identify disorders or signs of abnormalities according to muscular patterns. Specifically, classification methods encompass digital signal processing techniques and machine learning with high potential in the field. We hope that this work serves as an introduction to researchers interested in this field.Comment: 11 pages, 7 figure

Near-infrared spectroscopy in NGC 7538

The characterisation of the stellar population toward young high-mass star-forming regions allows to constrain fundamental cluster properties like distance and age. These are essential when using high-mass clusters as probes to conduct Galactic studies. NGC 7538 is a star-forming region with an embedded stellar population only unearthed in the near-infrared. We present the first near-infrared spectro-photometric study of the candidate high-mass stellar content in NGC 7538. We obtained H and K spectra of 21 sources with both the multi-object and long-slit modes of LIRIS at the WHT, and complement these data with sub-arcsecond JHKs photometry of the region using the imaging mode of the same instrument. We find a wide variety of objects within the studied stellar population of NGC 7538. Our results discriminate between a stellar population associated to the HII region, but not contained within its extent, and several pockets of more recent star formation. We report the detection of CO bandhead emission toward several sources as well as other features indicative of a young stellar nature. We infer a spectro-photometric distance of 2.7+-0.5 kpc, an age spread in the range 0.5-2.2 Myr and a total mass ~1.7x10^3 Msun for the older population.Comment: 11 pages, 8 figures, 1 table, accepted by A&

Andes Basin Focal Project

The CPWF Basin Focal Project for the Andes system of basins worked with a range of local stakeholders to develop a better understanding of the mechanisms for improving the productivity of water in the Andes. We considered productivity in broad terms as the productivity of energy (HEP), food and fiber (agriculture) and livelihoods (industry, transport and benefit sharing such as Payments for Environmental Services schemes (PES)). In addition to the compiled data bases and analyses on poverty and institutions, one of the key deliverables of the project was the development and deployment of the AguAAndes policy support system (PSS). This integrates analyses of water availability and productivity within the local environmental and policy context. It is a web-based policy support system combining an extensive spatial database with process-based models for hydrology, crop production and socio-economic processes. It is intended to allow analysts and decision makers to test the potential onsite and offsite impacts of land and water management decisions in terms of their ability to sustain environmental services and human wellbeing. Interventions and recommendations for future actions on water and food in the region are presented

Is Perceived Athlete Leadership Quality Related to Inside Sacrifice and Perceived Performance in Team Sports? The Mediating Role of Team Identification

The study aimed to analyze the relationship between athletes' perceptions of athlete leadership quality, team identification, inside sacrifice, and performance. A total of 299 players of collective sports (soccer, beach soccer, basketball, volleyball; Mage 19.05, SD = 5.10) participated through a cross-sectional design survey. Data were analyzed using structural equation modeling. Results highlight the positive relationships between perceived quality of athlete leaders, inside sacrifice, and perceived performance, and between inside sacrifice and perceived performance. Furthermore, inside sacrifice perceived by the athletes was a positive mediator between perceived athlete leadership quality and perceived performance. Also, team identification was a positive mediator in the association between inside sacrifice and perceived performance. These findings extend knowledge about the athlete leadership quality context. These results can also be useful for further research and implications in team sports' performance, as coaches and sports psychologists would have more information about their teams' perceptions of leadership quality to achieve positive outcomes in players' inside sacrifice and performance. The findings also highlight the importance of developing team identification to improve the relationships between perceived athlete leadership quality, inside sacrifice, and perceived performance

Amphiphilic Cationic Carbosilane-PEG Dendrimers: Synthesis and Applications in Gene Therapy

Here we synthesized carbosilane, generation 1 to 3, and PEG-based dendrons functionalized at the periphery with NHBoc groups and at the focal point with azide and alkyne moieties, respectively. The coupling of these two types of dendrons via click chemistry led to the formation of new hybrid dendrimers with two distinct moieties, the hydrophobic carbosilane and the hydrophilic PEG-based dendron. The protected dendrimers were transformed into cationic ammonium dendrimers. These unique amphiphilic dendrimers were studied as vectors for gene therapy against HIV in peripheral blood mononuclear cells (PBMC) and their performance was compared with that of a PEG-free carbosilane dendrimer. The presence of the PEG moiety afforded lower toxicities and evidenced a weaker interaction between dendrimers and siRNA when compared to the homodendrimer analogous. Both features, lower toxicity and lower dendriplex strength, are key properties for use of these vectors as carriers of nucleic material.Comunidad de MadridMinisterio de Sanidad y ConsumoMinisterio de Economía y Empres

Near-infrared Linear Polarization of Ultracool Dwarfs

We report on near-infrared J- and H-band linear polarimetric photometry of eight ultracool dwarfs (two late-M, five L0-L7.5, and one T2.5) with known evidence for photometric variability due to dust clouds, anomalous red infrared colors, or low-gravity atmospheres. The polarimetric data were acquired with the LIRIS instrument on the William Herschel Telescope. We also provide mid-infrared photometry in the interval 3.4-24 micron for some targets obtained with Spitzer and WISE, which has allowed us to confirm the peculiar red colors of five sources in the sample. We can impose modest upper limits of 0.9% and 1.8% on the linear polarization degree for seven targets with a confidence of 99%. Only one source, 2MAS, J02411151-0326587 (L0), appears to be strongly polarized (P ~ 3%) in the J-band with a significance level of P/sigma_P ~ 10. The likely origin of its linearly polarized light and rather red infrared colors may reside in a surrounding disk with an asymmetric distribution of grains. Given its proximity (66 +/- 8 pc), this object becomes an excellent target for the direct detection of the disk.Comment: Accepted for publication in Ap

Ventriculitis and hydrocephalia secondary to meningeal cryptococcosis in a non-HIV patient: a case report in the Hospital de San Jose in 2014

La criptocococis meníngea es la infección fúngica más frecuente del sistema nervioso central; generalmente se presenta en pacientes VIH seropositivos, aunque existe una proporción considerable de paciente VIH seronegativos, siendo en estos casos su presentación más agresiva. Esta infección tiene manifestaciones neurológicas variables que son secundarias al aumento de la presión intracraneal. La ventriculitis con hidrocefalia secundaria es una de las complicaciones de mayor morbi-mortalidad especialmente en pacientes VIH seronegativos. Presentamos un reporte de caso de criptocococis meníngea género Neoformans subtipo Grubbi con ventriculitis e hidrocefalia secundaria en paciente VIH seronegativo confirmado por histopatologíaMeningeal criptocococis is the most common fungal infection of the central nervous system, occuring in HIV seropositive patients, although there is a significant proportion of HIV seronegative patients, in whom the presentation is more aggresive. This infection has variable clinical manifestations secondary to increased intracranial pressure. Ventriculitis with hydrocephalus is one of the complications with the poorest outcome and mortality especially in HIV seronegative patients. We present a case report of meningeal criptocococis Neoformans subtype Grubbi with ventriculitis and secondary hydrocephalus in HIV seronegative patient confirmed by histopatholog

Ultracool dwarf benchmarks with \emph{Gaia} primaries

This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2017 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.We explore the potential of \emph{Gaia} for the field of benchmark ultracool/brown dwarf companions, and present the results of an initial search for metal-rich/metal-poor systems. A simulated population of resolved ultracool dwarf companions to \emph{Gaia} primary stars is generated and assessed. Of order $\sim$24,000 companions should be identifiable outside of the Galactic plane ($|b| > 10\,$deg) with large-scale ground- and space-based surveys including late M, L, T, and Y types. Our simulated companion parameter space covers $0.02 \le M/M_{\odot} \le 0.1$, $0.1 \le {\rm age/Gyr} \le 14$, and $-2.5 \le {\rm [Fe/H]} \le 0.5$, with systems required to have a false alarm probability $$0.6\, kau}\,Peer reviewedFinal Accepted Versio

GRB 060121: Implications of a Short/Intermediate Duration Gamma-Ray Burst at High Redshift

Since the discovery of the first short-hard gamma-ray burst afterglows in 2005, the handful of observed events have been found to be embedded in nearby (z < 1), bright underlying galaxies. We present multiwavelength observations of the short-duration burst GRB 060121, which is the first observed to clearly outshine its host galaxy (by a factor >10^2). A photometric redshift for this event places the progenitor at a most probable redshift of z = 4.6, with a less probable scenario of z = 1.7. In either case, GRB 060121 could be the farthermost short-duration GRB detected to date and implies an isotropic-equivalent energy release in gamma-rays comparable to that seen in long-duration bursts. We discuss the implications of the released energy on the nature of the progenitor. These results suggest that GRB 060121 may belong to a family of energetic short-duration events, lying at z > 1 and whose optical afterglows would outshine their host galaxies, unlike the first short-duration GRBs observed in 2005. The possibility of GRB 060121 being an intermediate duration burst is also discussed.Comment: 4 pages, 4 figures. Submitted to ApJ