The entropy of elliptical galaxies in Coma: a clue for a distance indicator

We have fitted the surface brightness of a sample of 79 elliptical galaxies pertaining to the Coma cluster of galaxies using the Sersic profile. This model is defined through three primary parameters: scale length (a), intensity (\Sigma_0), and a shape parameter (\nu); physical and astrophysical quantities may be computed from these parameters. We show that correlations are stronger among primary parameters than the classical astrophysical ones. In particular, the galaxies follow a high correlation in \nu and a parameters. We show that the \nu and a correlation satisfies a constant specific entropy condition. We propose to use this entropy relation as distance indicator for clusters.Comment: 5 pages, 3 figures, submitted to MNRAS Letter

Cambios en transaminasas hepáticas inducidas por ketoconazol en tratamiento de dermatofitosis en Canis familiaris, distrito de Trujillo

Se evaluaron 60 Canis familiaris de diferentes edades, razas y sexos, de los cuales 30 pacientes fueron clínicamente sanos y 30 presentaron dermatofitosis, diagnosticados mediante el raspado cutáneo, con la finalidad de evaluar los cambios en transaminasas hepáticas alanin amino transferasa (ALT) y aspartato amino transferasa (AST) inducidos por ketoconazol en tratamiento de dermatofitosis en el distrito de Trujillo; a los cuales se les administró, como terapia, ketoconazol vía oral a dosis de 10 mg/kg cada 24 horas, durante un periodo de 20 días continuos. Se observó que pacientes con dermatofitosis mostraron un incremento pre tratamiento de las transaminasas respecto a los perros sanos; sin embargo, al iniciar el tratamiento hasta la culminación del mismo no se obtuvo diferencias estadísticas significativas en ambas enzimas, hecho que advierte que el ketoconazol no produce hepatotoxicidad a la dosis usada y por el periodo descrito en perros con dermatofitosis. Los efectos adversos más comunes en los pacientes fueron vómitos, diarreas y anorexia; sin embargo, no fueron inconveniente para cortar la terapia, llegando a concluir todos los tratamientos.60 dogs of different age, race, and gender were evaluated, of which 30 patients were clinically healthy and 30 present dermatophytosis, diagnosed by skin scraping; with the aim to evaluate the changes of hepatic transaminase alanin amino transferase (ALT) and aspartate amino transferase (AST) induced by ketoconazol in dermatophytosis treatment of Canis familiaris in Trujillo district. Which are given as oral ketoconazole therapy at a dose of 10 mg / kg every 24 hours over a period of 20 continuous days. It was observed that patients with dermatophytosis showed a pre-treatment increment of transaminase over healthy dogs; however, from the begining of the treatment to its completion it was not obtained statistically significant differences in both enzymes, this fact warns us that ketoconazol does not produce hepatotoxicity to the dose and for the described period of time in dogs with dermatophytosis. The most common adverse effects in patients were vomit, diarrhea and anorexia; but these were not inconvenient to stop therapy, concluding all treatments.Tesi

The X-ray variability of Seyfert 1.8/1.9 galaxies

Seyfert 1.8/1.9 are sources showing weak broad H-alpha components in their optical spectra. We aim at testing whether Seyfert 1.8/1.9 have similar properties at UV and X-ray wavelengths to Seyfert 2. We use the 15 Seyfert 1.8/1.9 in the Veron Cetty and Veron catalogue with public data available from the Chandra and/or XMM-Newton archives at different dates, with timescales between observations ranging from days to years. Our results are homogeneously compared with a previous work using the same methodology applied to a sample of Seyfert 2 (Hernandez-Garcia et al. 2015). X-ray variability is found in all 15 nuclei over the aforementioned ranges of timescales. The main variability pattern is related to intrinsic changes in the sources, which are observed in ten nuclei. Changes in the column density are also frequent, as they are observed in six nuclei, and variations at soft energies, possibly related to scattered nuclear emission, are detected in six sources. X-ray intraday variations are detected in six out of the eight studied sources. Variations at UV frequencies are detected in seven out of nine sources. A comparison between the samples of Seyfert 1.8/1.9 and 2 shows that, even if the main variability pattern is due to intrinsic changes of the sources in the two families, these nuclei exhibit different variability properties in the UV and X-ray domains. In particular, variations in the broad X-ray band on short time-scales (days/weeks), and variations in the soft X-rays and UV on long time-scales (months/years) are detected in Seyfert 1.8/1.9 but not in Seyfert 2. Overall, we suggest that optically classified Seyfert 1.8/1.9 should be kept separated from Seyfert 2 galaxies in UV/X-ray studies of the obscured AGN population because their intrinsic properties might be different.Comment: Accepted for publication in A&A. arXiv admin note: text overlap with arXiv:1505.0116

Impacto da poluição ambiental na superfície ocular de pacientes com síndrome de Sjögren

Purpose: To evaluate the effect of air pollution on the ocular surface of patients with Sjögren's syndrome. Methods: We investigated the ocular surfaces of thirty patients with Sjögren's syndrome and thirty healthy volunteers (control group) living in the Metropolitan Area of Buenos Aires. We used nitrogen dioxide as an indicator of exposure to air pollution. An ocular symptoms questionnaire was answered by all subjects, who also underwent a complete ocular surface ophthalmic examination-including an Ocular Surface Disease Index questionnaire, biomicroscopy, tear breakup time, Schirmer 1 test, corneal and conjunctival vital staining with fluorescein and lissamine green, tear lysozyme concentration, and impression cytology. Results: In almost all ocular surface test findings, we found a positive and significant correlation between higher levels of exposure to air pollution and higher levels of ocular surface damage in both the control group and Sjögren's syndrome patients. In Sjögren's syndrome patients, the Ocular Surface Disease Index questionnaire, tear breakup time, vital staining and impression cytology showed a significant correlation between high levels of air pollution and ocular surface disease. In the control group, the Ocular Surface Disease Index questionnaire, tear breakup time, and impression cytology showed a significant correlation between high levels of air pollution and ocular surface disease. Conclusions: Here we demonstrated that in patients with dry eye syndrome associated with Sjögren, abnormalities of the ocular surface and eye irritation related to air pollution are more severe than those in the control group. We believe that measuring air quality should be not only an integral part of the evaluation of ocular surface disease but also a therapeutic consideration.Objetivo: Avaliar o efeito da poluição do ar na superfície ocular de pacientes com síndrome de Sjögren. Métodos: Foram investigadas as superfícies oculares de trinta pacientes com síndrome de Sjögren e trinta voluntários saudáveis (grupo controle) residentes na Região Metropolitana de Buenos Aires. Usamos o dióxido de nitrogênio como um indicador de exposição à poluição do ar. Um questionário de sintomas oculares foi respondido por todos os indivíduos, que também foram submetidos a um exame oftalmológico completo da superfície ocular - incluindo um questionário do Índice da Doença da Superfície Ocular, biomicroscopia, tempo de ruptura do filme lacrimal, teste de Schirmer 1, coloração da córnea e conjuntiva com fluoresceína e lissamina verde, concentração de lisozima lacrimal e citologia de impressão. Resultados: Em quase todos os achados do teste de superfície ocular, encontramos uma correlação positiva e significativa entre níveis mais altos de exposição à poluição do ar e níveis mais elevados de danos na superfície ocular tanto no grupo controle quanto nos pacientes com síndrome de Sjögren. Em pacientes com síndrome de Sjögren, o questionário do Índice da Doença da Superfície Ocular, tempo de ruptura do filme lacrimal, coloração vital e citologia de impressão mostraram uma correlação significativa entre altos níveis de poluição do ar e doença da superfície ocular. No grupo controle, o questionário do Índice de Doenças da Superfície Ocular, tempo de ruptura do filme lacrimal e citologia de impressão mostraram uma correlação significativa entre altos níveis de poluição do ar e doença da superfície ocular. Conclusões: Aqui demonstramos que, pacientes com síndrome de olho seco associada a Sjögren, as anormalidades da superfície ocular e airritação ocular relacionadas à poluição do ar são mais graves do que aquelas no grupo controle. Acreditamos que a medição da qualidade do ar não deve ser apenas uma parte integral da avaliação da doença da superfície ocular, mas também uma consideração terapêutica.Fil: Galperín, Gustavo Javier. Hospital Oftalmológico Pedro Lagleyze; ArgentinaFil: Berra, Fabio Martín. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Hospital Oftalmológico Pedro Lagleyze; ArgentinaFil: Marquez, Maria Isabel. Bioquímica Ocular; ArgentinaFil: Mandaradoni, Mariana. Hospital Nacional Professor Dr. Alejandro Posadas; ArgentinaFil: Tau, Julia. Laboratorio de Investigaciones Oculares; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Berra, Alejandro. Laboratorio de Investigaciones Oculares; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Circumnuclear structure and kinematics in the active galaxy NGC 6951

A study is presented of the central structure and kinematics of the galaxy NGC 6951, by means of broad band B'IJK images and high resolution high dispersion longslit spectroscopy, together with archival HST WFPC2 V and NICMOS2 J and H images. We find that there is evidence of two modes of star formation, in bursts and continuously. The equivalent width of the CaII triplet absorption lines show that, in the metal rich central region, the continuum is dominated by a population of red supergiants. The gaseous and stellar kinematics along three slit position angles, suggest the existence of a hierarchy of disks within disks, whose dynamics are decoupled at the two ILRs, that we find at 180 pc and at 1100 pc. This is supported by the structure seen in the high resolution HST images. The nucleus is spatially resolved within a radius of 1.5 arcsec, just inside the innermost ILR. Outside the iILR, the stellar CaT velocity profile is resolved into two components, associated with the bar and the disk. Several results indicate that this is a dynamically old system. It is thus possible that a nuclear bar has existed in NGC 6951 that drove the gas towards the nucleus, as in the bars within bars scenario, but that this bar has already dissolved by the gas accumulated within the circumnuclear region. We discuss the possibility that the kinematical component inside the iILR could be due to a nuclear outflow produced by the combined effects of SN and SN remnants, or to a nuclear disk, as in the disk within disk scenario that we propose for the fueling of the AGN in NGC 6951.Comment: 14 pages, 16 figures. Accepted for publication in Astronomy and Astrophysics. High resolution images in http://www.iaa.es/~eperez/research/degas.htm

Filmed clinical cases improved communication skills of student of Pharmacology in Podiatry degree

Solving clinical case by writing-report lacks of students sympathies and interest in many cases. Make a short film is a novelty that really like to the students and may improve their arguing and planning capacities and their communication skills. Aim: To evaluate the impact of presenting and resolving clinical cases through filming a short-film in the communication skills development and in the learning of medicines in Podiatry undergraduate students. Methods: A two-year study in which students were invited to voluntarily form groups (3 students maximum). Each group has to design and film a short-film (8 min maximum) showing a clinical case in which medicines’ use was needed to treat feet pathology. A camera, a mobile-phone's video editor or whatever they may use was allowed. The job of each group was supervised and helped by a teacher. The students were invited to present their work to the rest of the class. After each short-film projection the students were encouraged to ask questions if they wanted to do it. After all the projections the students voluntarily answered a satisfaction survey. Results: Students of Pharmacology of Podiatry Degree, N=101, 55.6% female, 20±1.3 years old were enrolled. 37 short-films showing a clinical case were made. The average time spent by students in making the film was 12.4±8 h. The percentage of students which were satisfied with this way of presentation of the clinical cases was 75.2%. Conclusion: Filmed clinical cases performed by student of Pharmacology of the Podiatry Degree improved their communication skills.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. Convocatoria de Ayudas de la Universidad de Málaga a Proyectos de Innovación Educativa, convocatoria 2013-2015, PIE 13-156 en Área de Ciencias de la Salud

Liderazgo transformacional y desempeño laboral de los colaboradores de una entidad edil del distrito de Huaura, Lima, 2023

Esta investigación tuvo como objetivo determinar la relación del liderazgo transformacional y el desempeño laboral de los colaboradores de una entidad edil del distrito de Huaura, 2023. Es de tipo básica, no experimental, correlacional, de corte transversal, conformada por una población y muestra de 65 colaboradores, se utilizó la encuesta como técnica y el cuestionario como instrumento la cual fue validado por tres profesionales a través de juicio de expertos, se utilizó el Alfa de Crobanch obteniendo como resultado 0,782 y 0,849 respectivamente lo que denota una confiabilidad buena. Se utilizó Excel y el software IBM SPSS, para presentar los resultados a través de tablas y gráficos. Como resultado se concluyó que existe relación significativa entre el liderazgo transformacional y el desempeño laboral con una correlación de 0,700 lo que indica una alta correlación según la prueba de Rho de Sperman. A su vez en la prueba de hipótesis se obtuvo un p-valor 0,000 < α=0.05, rechazándose la hipótesis nula y aceptándose la hipótesis alterna

Importance of Social Support of Parents of Children with Cancer: A Multicomponent Model Using Partial Least Squares-Path Modelling

he purpose of the present study is to build a model combining some variables that have been previously studied separately to improve our understanding on how they relate in parents of children with cancer. A total of 112 parents with an average age of 41 completed the self-assessment questionnaires containing the factors studied: social support received, social support provided, stress, adjustment of parents and life satisfaction. Two models were developed: one for social support received and one for social support provided. Structural equation models based on the variance estimated through partial least squares were used to analyze factors involved in quality of life based on an exploratory model of second order. The estimated model was robust in terms of quality of measurement (reliability and validity). According to results from the structural model, in the model of social support received, the impact of social support received on stress was considerable (β = −0.26; p = 0.02) and it explained 16% of the variance. The impact of social support received by parents on their adjustment (β = −0.56; p < 0.001) was also considerable, explaining 32% of the variance. Finally, adjustment of parents also showed an effect on life satisfaction (β = −0.33; p < 0.001) and it explained 26% of the variance. However, the relation between social support received (β = 0.15; p = 0.11) and life satisfaction, the relation between stress (β = −0.15; p = 0.08) and life satisfaction, and the relation between adjustment of parents (β = 0.20; p = 0.07) and stress were not significant. In the model of social support provided by parents, social support provided (β = 0.35; p < 0.001), and adjustment of parents (β = −0.31; p < 0.01) impacted life satisfaction, explaining 36% of the variance. Social support provided (β = −0.34; p < 0.01) impacted adjustment of parents and it explained 12% of the variance. (...)This work was supported by the Groups PAIDI, Junta de Andalucía, Spain [Grant Number HUM-590]. Partial funding for open access charge: Universidad de Málag