A complete census of silicate features in the mid-infrared spectra of active galaxies

We present a comprehensive study of the silicate features at 9.7 and 18 micron of a sample of almost 800 active galactic nuclei (AGN) with available spectra from the Spitzer InfraRed Spectrograph (IRS). We measure the strength of the silicate feature at 9.7 micron, S9.7, before and after subtracting the host galaxy emission from the IRS spectra. The numbers of type 1 and 2 AGN with the feature in emission increase by 20 and 50%, respectively, once the host galaxy is removed, while 35% of objects with the feature originally in absorption exhibit it in even deeper absorption. The peak of S9.7, lambda_peak, has a bimodal distribution when the feature is in emission, with about 65% of the cases showing lambda_peak > 10.2 micron. Silicates can appear in emission in objects with mid-infrared (MIR) luminosity spanning over six orders of magnitude. The derived distributions of the strength of the silicate features at 9.7 and 18 micron provide a solid test bed for modeling the dust distribution in AGN. Clumpiness is needed in order to produce absorption features in unobscured AGN and can also cause the silicates to be in absorption at 9.7 micron and in emission at 18 micron in type 1 sources. We find the `cosmic' silicates of Ossenkopf et al. to be more consistent with the observations than Draine's `astronomical' silicates. Finally, we discuss the possibility of a foreground absorber to explain the deep silicate absorption features in the MIR spectra of some type 2 AGN.Comment: 10 pages, 11 figures. Accepted for publication in Ap

On Principal Congruences in Distributive Lattices with a Commutative Monoidal Operation and an Implication

In this paper we introduce and study a variety of algebras that properly includes integral distributive commutative residuated lattices and weak Heyting algebras. Our main goal is to give a characterization of the principal congruences in this variety. We apply this description in order to study compatible functions.Fil: Jansana Ferrer, Ramon. Universidad de Barcelona; EspañaFil: San Martín, Hernán Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Matemáticas; Argentin

Vibrational study and force field of the citric acid dimer based on the SQM methodology

We have carried out a structural and vibrational theoretical study for the citric acid dimer. The Density Functional Theory (DFT) method with the B3LYP/6-31G() and B3LYP/6-311++ G methods have been used to study its structure and vibrational properties. Then, in order to get a good assignment of the IR and Raman spectra in solid phase of dimer, the best fit possible between the calculated and recorded frequencies was carry out and the force fields were scaled using the Scaled Quantum Mechanic Force Field (SQMFF) methodology. An assignment of the observed spectral features is proposed. A band of medium intensity at 1242 cm - 1 together with a group of weak bands, previously not assigned to the monomer, was in this case assigned to the dimer. Furthermore, the analysis of the Natural Bond Orbitals (NBOs) and the topological properties of electronic charge density by employing Bader's Atoms in Molecules theory (AIM) for the dimer were carried out to study the charge transference interactions of the compound.Facultad de Ciencias Exacta

Evaluacion antropométrica de alumnos ingresantes 2015 de las carreras de educación física de la Universidad Nacional de La Plata

El presente trabajo tiene como objetivo dar a conocer los resultados de los avances de la investigación con respecto a la obtención de un Perfil Antropométrico “tipo” de los ingresantes de las carreras de Profesorado y Licenciatura en Educación Física de la Facultad de Humanidades y Ciencias de la Educación de la Universidad Nacional de La Plata, a través de la cual se llevó a cabo, por segundo año consecutivo (2014-2015), la toma de una serie de medidas antropométricas estandarizadas por la International Society for the Advancement of Kinanthropometry (Sociedad Internacional para el Avance de la Kinantropometria – ISAK), proporcionando una descripción de la masa corporal en su totalidad de cada uno de los ingresantes, distribuidos principalmente en % / KG de masa muscular, % / KG de masa adiposa y % / KG de masa ósea. A su vez se realizó por primera vez un Test de salto, con el objetivo de medir la fuerza explosiva del tren inferior; utilizando la plataforma de contacto. Y así mismo expandir el espectro del perfil del ingresante. Pretenderemos dar un aporte valorativo al campo de la educación física, pudiendo establecer un valor de referencia en el área de la composición corporal, es decir, un perfil antropométrico “especifico de ingresantes de la(s) carrera(s)”.This work aims to present the results of research advances regarding obtaining an anthropometric profile "type" of entrants racing Teaching and Bachelor of Physical Education, Faculty of Humanities and Sciences Education at the National University of La Plata, through which was held for the second consecutive year (2014-2015), making a series of anthropometric measures standardized by the International Society for the Advancement of Kinanthropometry (Society International for the Advancement of Kinantropometry - ISAK), providing an overview of the entire body mass of each of the entrants, distributed mainly in% / kg muscle mass, % / kg fat mass and% / kg dough that is. In turn it was performed for the first time test jump, in order to measure the explosive power of the lower body; using the contact platform. And also expand the scope of the entrant profile. We'll pretend to give an evaluative contribution to the field of physical education, may establish a reference value in the area of body composition, ie, a "specific of entrants from the (s) race (s)" anthropometric profileMesa de trabajo 7: Educación Física y SaludFacultad de Humanidades y Ciencias de la Educació

Evaluacion antropométrica de alumnos ingresantes 2015 de las carreras de educación física de la Universidad Nacional de La Plata

El presente trabajo tiene como objetivo dar a conocer los resultados de los avances de la investigación con respecto a la obtención de un Perfil Antropométrico “tipo” de los ingresantes de las carreras de Profesorado y Licenciatura en Educación Física de la Facultad de Humanidades y Ciencias de la Educación de la Universidad Nacional de La Plata, a través de la cual se llevó a cabo, por segundo año consecutivo (2014-2015), la toma de una serie de medidas antropométricas estandarizadas por la International Society for the Advancement of Kinanthropometry (Sociedad Internacional para el Avance de la Kinantropometria – ISAK), proporcionando una descripción de la masa corporal en su totalidad de cada uno de los ingresantes, distribuidos principalmente en % / KG de masa muscular, % / KG de masa adiposa y % / KG de masa ósea. A su vez se realizó por primera vez un Test de salto, con el objetivo de medir la fuerza explosiva del tren inferior; utilizando la plataforma de contacto. Y así mismo expandir el espectro del perfil del ingresante. Pretenderemos dar un aporte valorativo al campo de la educación física, pudiendo establecer un valor de referencia en el área de la composición corporal, es decir, un perfil antropométrico “especifico de ingresantes de la(s) carrera(s)”.This work aims to present the results of research advances regarding obtaining an anthropometric profile "type" of entrants racing Teaching and Bachelor of Physical Education, Faculty of Humanities and Sciences Education at the National University of La Plata, through which was held for the second consecutive year (2014-2015), making a series of anthropometric measures standardized by the International Society for the Advancement of Kinanthropometry (Society International for the Advancement of Kinantropometry - ISAK), providing an overview of the entire body mass of each of the entrants, distributed mainly in% / kg muscle mass, % / kg fat mass and% / kg dough that is. In turn it was performed for the first time test jump, in order to measure the explosive power of the lower body; using the contact platform. And also expand the scope of the entrant profile. We'll pretend to give an evaluative contribution to the field of physical education, may establish a reference value in the area of body composition, ie, a "specific of entrants from the (s) race (s)" anthropometric profileMesa de trabajo 7: Educación Física y SaludFacultad de Humanidades y Ciencias de la Educació

Evaluacion antropométrica de alumnos ingresantes 2015 de las carreras de educación física de la Universidad Nacional de La Plata

El presente trabajo tiene como objetivo dar a conocer los resultados de los avances de la investigación con respecto a la obtención de un Perfil Antropométrico “tipo” de los ingresantes de las carreras de Profesorado y Licenciatura en Educación Física de la Facultad de Humanidades y Ciencias de la Educación de la Universidad Nacional de La Plata, a través de la cual se llevó a cabo, por segundo año consecutivo (2014-2015), la toma de una serie de medidas antropométricas estandarizadas por la International Society for the Advancement of Kinanthropometry (Sociedad Internacional para el Avance de la Kinantropometria – ISAK), proporcionando una descripción de la masa corporal en su totalidad de cada uno de los ingresantes, distribuidos principalmente en % / KG de masa muscular, % / KG de masa adiposa y % / KG de masa ósea. A su vez se realizó por primera vez un Test de salto, con el objetivo de medir la fuerza explosiva del tren inferior; utilizando la plataforma de contacto. Y así mismo expandir el espectro del perfil del ingresante. Pretenderemos dar un aporte valorativo al campo de la educación física, pudiendo establecer un valor de referencia en el área de la composición corporal, es decir, un perfil antropométrico “especifico de ingresantes de la(s) carrera(s)”.This work aims to present the results of research advances regarding obtaining an anthropometric profile "type" of entrants racing Teaching and Bachelor of Physical Education, Faculty of Humanities and Sciences Education at the National University of La Plata, through which was held for the second consecutive year (2014-2015), making a series of anthropometric measures standardized by the International Society for the Advancement of Kinanthropometry (Society International for the Advancement of Kinantropometry - ISAK), providing an overview of the entire body mass of each of the entrants, distributed mainly in% / kg muscle mass, % / kg fat mass and% / kg dough that is. In turn it was performed for the first time test jump, in order to measure the explosive power of the lower body; using the contact platform. And also expand the scope of the entrant profile. We'll pretend to give an evaluative contribution to the field of physical education, may establish a reference value in the area of body composition, ie, a "specific of entrants from the (s) race (s)" anthropometric profileMesa de trabajo 7: Educación Física y SaludFacultad de Humanidades y Ciencias de la Educació

Karyotypic Assymmetries observed in two species of Gossypium L.

Karyotypic Assymmetries observed in two species  of  Asimetrías cariotípicas observadas en dos especies de Gossypium L. </htm

Vibrational study and force field of the citric acid dimer based on the SQM methodology

We have carried out a structural and vibrational theoretical study for the citric acid dimer. The Density Functional Theory (DFT) method with the B3LYP/6-31G() and B3LYP/6-311++ G methods have been used to study its structure and vibrational properties. Then, in order to get a good assignment of the IR and Raman spectra in solid phase of dimer, the best fit possible between the calculated and recorded frequencies was carry out and the force fields were scaled using the Scaled Quantum Mechanic Force Field (SQMFF) methodology. An assignment of the observed spectral features is proposed. A band of medium intensity at 1242 cm - 1 together with a group of weak bands, previously not assigned to the monomer, was in this case assigned to the dimer. Furthermore, the analysis of the Natural Bond Orbitals (NBOs) and the topological properties of electronic charge density by employing Bader's Atoms in Molecules theory (AIM) for the dimer were carried out to study the charge transference interactions of the compound.Facultad de Ciencias Exacta

Composición química del aceite esencial de madera de Aniba cinnamomiflora C. K. Allen, andes venezolanos

Aniba cinnamomiflora C. K. Allen is a tree species of Lauraceae family that produces essential oil. Study on the hydrodistillation product of wood pieces from branches of Aniba cinnamomiflora is presented. The 0.05% of essential oil was obtained. The essential oil was analyzed by gas chromatography and Mass spectrometry. Fifteen compounds were identified (98.55%) of the total retrieved. The major component (54.00%) corresponds to the lipid γ-palmitolactone, followed by 1-epi-cubenol (9.56%), δ-cadinene (6.05%), t-cadinol (5.00%) and chamazulene (3.53%). This is the first study on the wood essential oil of Aniba cinnamomiflora.  Aniba cinnamomiflora  C. K. Allen  es una especie arbórea de la familia Lauraceae que produce aceite esencial. Se presenta un estudio sobre el producto de la hidrodestilación de partículas de madera provenientes de ramas de  Aniba cinnamomiflora. El 0,05% de aceite esencial fue obtenido. El aceite esencial fue analizado por cromatografia de gases y espectrometria de masas. Fueron identificados quince compuestos (98.55%) del total recuperado. El principal componente (54.00%) corresponde al lípido γ-palmitolactona, seguido por 1-epi-cubenol (9.56%), δ-cadineno (6.05%), t-cadinol (5.00%) y chamazuleno (3.53%) . Este es el primer reporte del studio del aceite esencial de la madera de Aniba cinnamomiflora

Extracellular Vesicles Secreted by Hypoxic AC10 Cardiomyocytes Modulate Fibroblast Cell Motility

Extracellular vesicles (EVs) are small membrane vesicles secreted by most cell types with important roles in cell-to-cell communication. To assess their relevance in the context of heart ischemia, EVs isolated from the AC10 ventricular cardiomyocyte cell line (CM-EVs), exposed to normoxia (Nx) or hypoxia (Hx), were incubated with fibroblasts (Fb) and endothelial cells (EC). CM-EVs were studied using electron microscopy, nanoparticle tracking analysis (NTA), western blotting and proteomic analysis. Results showed that EVs had a strong preference to be internalized by EC over fibroblasts, suggesting an active exosome-based communication mechanism between CM and EC in the heart. In Matrigel tube-formation assays, Hx CM-EVs were inferior to Nx CM-EVs in angiogenesis. By contrast, in a wound-healing assay, wound closure was faster in fibroblasts treated with Hx CM-EVs than with Nx CM-EVs, supporting a pro-fibrotic effect of Hx CM-EVs. Overall, these observations were consistent with the different protein cargoes detected by proteomic analysis under Nx and Hx conditions and the biological pathways identified. The paracrine crosstalk between CM-EVs, Fb, and EC in different physiological conditions could account for the contribution of CM-EVs to cardiac remodeling after an ischemic insult