2,476 research outputs found

    Multilingual Information Framework for Handling textual data in Digital Media

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    This document presents MLIF (Multi Lingual Information Framework), a high-level model for describing multilingual data across a wide range of possible applications in the translation/localization process within several multimedia domains (e.g. broadcasting interactive programs within a multilingual community)

    14-3-3s Protein Expression in Canine Renal Cell Carcinomas

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    14-3-3σ is a protein expressed in many epithelial tissues associated with essential cell functions, including cell-cycle control, apoptosis, and cytoskeletal integrity. There is a paucity of knowledge of the tumorigenesis of canine renal cell carcinomas (RCCs), and the histological origin of this tumor has not been established. This study analyzed the expression of 14-3-3σ, Ki-67, cytokeratins, and vimentin in 40 canine RCCs. Aberrant expression of 14-3-3σ was demonstrated in 15 (38%) cases and was associated with a significantly shorter survival time (P < .002). In contrast to canine RCC, normal kidney did not express 14-3-3σ. The Ki-67 proliferation index did not show utility as a prognostic factor. The distal convoluted tubular epithelium in normal kidneys coexpressed cytokeratins and vimentin, and thus maintenance of this coexpression pattern in canine RCC suggests that most tumors arise from the distal segment of the nephron. These results suggest that 14-3-3σ is a potential negative prognostic factor and a possible therapeutic target

    12-Lead ECG modulator and demodulator equipment for telephony transmission

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    This paper describes a teleassistency system that consists of a modulator equipment for the acquisition. storage and FM transmission of the typical 12 lead ECG signals and a demodulalOf equipment for recovering the original sig- nals in a medical cemer. Switched telephone network and GSM network can be used to transmir the audio fre- quency modulated signal carrying ECG Information

    Mode excitation by turbulent convection in rotating stars. I. Effect of uniform rotation

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    We focus on the influence of the Coriolis acceleration on the stochastic excitation of oscillation modes in convective regions of rotating stars. Our aim is to estimate the asymmetry between excitation rates of prograde and retrograde modes. We extend the formalism derived for obtaining stellar pp- and gg-mode amplitudes (Samadi & Goupil 2001, Belkacem et al. 2008) to include the effect of the Coriolis acceleration. We then study the special case of uniform rotation for slowly rotating stars by performing a perturbative analysis. This allows us to consider the cases of the Sun and the CoRoT target HD 49933. We find that, in the subsonic regime, the influence of rotation as a direct contribution to mode driving is negligible in front of the Reynolds stress contribution. In slow rotators, the indirect effect of the modification of the eigenfunctions on mode excitation is investigated by performing a perturbative analysis of the excitation rates. It turns out that the excitation of solar pp modes is affected by rotation with excitation rates asymmetries between prograde and retrograde modes of the order of several percents. Solar low-order gg modes are also affected by uniform rotation and their excitation rates asymmetries are found to reach up to 10 %. The CoRoT target HD 49933 is rotating faster than the Sun (Ω/Ω8\Omega / \Omega_\odot \approx 8) and we show that the resulting excitation rates asymmetry is about 10 % for the excitation rates of pp modes. We have then demonstrated that pp and gg mode excitation rates are modified by uniform rotation through the Coriolis acceleration. Study of the effect of differential rotation is dedicated to a forthcoming paper.Comment: 9 pages, 4 figures, accepted in A&

    Physical Properties and Chemical Characterization of Macro- and Micro-Nutriments of Elite Blue Maize Hybrids (Zea mays L.)

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    Five elite blue maize hybrids and two blue maize landraces were evaluated for various quality characteristics. Hybrids showed physical characteristics demanded by dry-millers and tortilla processors: above 290 g in one hundred-kernel weight test, higher test weight (76.1–78.5 kg hl−1) and lower flotation index (22–61%). Hybrid maize 613 × 27 (9.9%) and 611 × 8 (9.5%) contained the highest protein. Potassium, magnesium, manganese and zinc contents of hybrid maize were higher than landraces by 15, 30, 55 and 41%, respectively. Nutrimental profile showed linoleic acid contents above 50% in 503 × 67, 613 × 27 and 611 × 8 hybrid samples. Lysine levels of landraces and hybrids 503 × 67 (33.9 g kg−1 protein) and 631 × 27 (31.7 g kg−1 protein) were higher than reported for regular white corn (27 g kg−1 protein), as well as the highest tryptophan levels for Chalqueno (6.0 g kg−1 protein) and hybrid 503 × 67 (6.9 g kg−1 protein). Highest protein quality based on its digestibility was found in hybrid 503 × 67. Results indicated that elite blue maize hybrids could be an important source of nutrimental compounds with potential for functional food industries

    Herschel Far-IR counterparts of SDSS galaxies: Analysis of commonly used Star Formation Rate estimates

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    We study a hundred of galaxies from the spectroscopic Sloan Digital Sky Survey with individual detections in the Far-Infrared Herschel PACS bands (100 or 160 μ\mum) and in the GALEX Far-UltraViolet band up to z\sim0.4 in the COSMOS and Lockman Hole fields. The galaxies are divided into 4 spectral and 4 morphological types. For the star forming and unclassifiable galaxies we calculate dust extinctions from the UV slope, the Hα\alpha/Hβ\beta ratio and the LIR/LUVL_{\rm IR}/L_{\rm UV} ratio. There is a tight correlation between the dust extinction and both LIRL_{\rm IR} and metallicity. We calculate SFRtotal_{total} and compare it with other SFR estimates (Hα\alpha, UV, SDSS) finding a very good agreement between them with smaller dispersions than typical SFR uncertainties. We study the effect of mass and metallicity, finding that it is only significant at high masses for SFRHα_{H\alpha}. For the AGN and composite galaxies we find a tight correlation between SFR and LIR_{IR} (σ\sigma\sim0.29), while the dispersion in the SFR - LUV_{UV} relation is larger (σ\sigma\sim0.57). The galaxies follow the prescriptions of the Fundamental Plane in the M-Z-SFR space.Comment: 24 pages, 23 figures, accepted for publication in MNRA

    Análisis de la distribución espacio-temporal de aerosoles atmosféricos en la ciudad de Córdoba (Argentina) mediante el uso de información satelital

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    Fil: Della Ceca, Lara S. Universidad Nacional de Córdoba. Instituto de Altos Estudios Espaciales Mario Gulich, Comisión Nacional de Actividades Espaciales; Argentina.Fil: García Ferreyra, María F. Comisión Nacional de Actividades Espaciales; Argentina.Fil: Carreras, Hebe A. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Carreras, Hebe A. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Multidisciplinario de Biología Vegetal; Argentina.El uso de información satelital es una herramienta muy importante para evaluar la calidad del aire y el contenido de aerosoles en sitios que no poseen una red de monitoreo o ésta es insuficiente, como es el caso de la ciudad de Córdoba. En este estudio se realizó el análisis espacio-temporal de la distribución de aerosoles sobre la ciudad de Córdoba y alrededores, para el período 2003-2013, utilizando el producto de aerosoles (AOD), del sensor MODIS (Aqua/Nasa), obtenido por el algoritmo MAIAC (Multi-Angle Implementation of Atmospheric Correction). Este algoritmo mejora la resolución espacial del producto estándar, de 10 a 1 km. Se observó una buena correlación entre el producto AOD de MAIAC y el observado a campo por la estación AERONET Cordoba-CETT indicando un buen rendimiento del algoritmo en esta región. El contenido de aerosoles atmosféricos en la ciudad de Córdoba mostró una gran variabilidad estacional evidenciando la influencia de variables meteorológicas (p. ej.: temperatura, humedad relativa, dirección e intensidad de vientos, altura de la capa de mezcla) sobre este parámetro y la diversidad de fuentes en esta región respecto a la época del año. Además, se detectaron áreas dentro del ejido urbano (centro y noroeste) que presentan un marcado incremento de los aerosoles atmosféricos a lo largo del tiempo, posiblemente asociados al incremento del parque automotor y la construcción de nuevas vías para circulación.Fil: Della Ceca, Lara S. Universidad Nacional de Córdoba. Instituto de Altos Estudios Espaciales Mario Gulich, Comisión Nacional de Actividades Espaciales; Argentina.Fil: García Ferreyra, María F. Comisión Nacional de Actividades Espaciales; Argentina.Fil: Carreras, Hebe A. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Carreras, Hebe A. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Multidisciplinario de Biología Vegetal; Argentina.Otras Ciencias de la Tierra y relacionadas con el Medio Ambient

    Effect of dietary docosahexaenoic acid supplementation on the participation of vasodilator factors in aorta from orchidectomized rats

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    Benefits of n-3 polyunsaturated fatty acids (PUFAs) against cardiovascular diseases have been reported. Vascular tone regulation is largely mediated by endothelial factors whose release is modulated by sex hormones. Since the incidence of cardiovascular pathologies has been correlated with decreased levels of sex hormones, the aim of this study was to analyze whether a diet supplemented with the specific PUFA docosahexaenoic acid (DHA) could prevent vascular changes induced by an impaired gonadal function. For this purpose, control and orchidectomized rats were fed with a standard diet supplemented with 5% (w/w) sunflower oil or with 3% (w/w) sunflower oil plus 2% (w/w) DHA. The lipid profile, the blood pressure, the production of prostanoids and nitric oxide (NO), and the redox status of biological samples from control and orchidectomized rats, fed control or DHA-supplemented diet, were analyzed. The vasodilator response and the contribution of NO, prostanoids and hyperpolarizing mechanisms were also studied. The results showed that orchidectomy negatively affected the lipid profile, increased the production of prostanoids and reactive oxygen species (ROS), and decreased NO production and the antioxidant capacity, as well as the participation of hyperpolarizing mechanisms in the vasodilator responses. The DHAsupplemented diet of the orchidectomized rats decreased the release of prostanoids and ROS, while increasing NO production and the antioxidant capacity, and it also improved the lipid profile. Additionally, it restored the participation of hyperpolarizing mechanisms by activating potassium. Since the modifications induced by the DHA-supplemented diet were observed in the orchidectomized, but not in the healthy group, DHA seems to exert cardioprotective effects in physiopathological situations in which vascular dysfunction existsThis study was supported by grants to MF from the Fondo de Investigaciones Sanitarias (PI1100406), Comunidad de Madrid (S2013/ABI- 2783, “INSPIRA1-CM”), Fondo Europeo de Desarrollo Regional, and Centro de Estudios América Latina (Grupo Santander-UAM)
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