276 research outputs found

    Pertinencia de los programas técnicos y tecnológicos ofrecidos por el Sena Centro Agroempresarial Regional Cesar

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    En Colombia los niveles de vida mejoran cuando se brinda a sus habitantes la educación necesaria para su avance y desarrollo creativo que permita la influencia con su entorno. El sector educativo interactúa con el sector productivo gracias a un trabajo de sinergia que facilita el acceso a talento humano capacitado y acorde a las necesidades del sector productivo nacional y regional, enfocándose a una educación de talla internacional. Este artículo abordó entonces, en la pertinencia de los programas técnicos y tecnológicos ofrecidos por el SENA Centro Agroempresarial Regional César, como también la pertinencia de los aprendices en el ámbito laboral regional. Así pues, se encontró que la manera en que se definen los programas a ofrecer debe ser reestructurada, incluyendo no sólo la oferta laboral, sino también la demanda estudiantil de aprendices, pues según los datos, uno o dos programas llegan a formar el 25% a 30% de los aprendices mientras que esta misma cifra de aprendices certificados se logra también con 34 programas de menos de 30 personas

    Pertinencia de los programas técnicos y tecnológicos ofrecidos por el Sena Centro Agroempresarial Regional Cesar

    Get PDF
    En Colombia los niveles de vida mejoran cuando se brinda a sus habitantes la educación necesaria para su avance y desarrollo creativo que permita la influencia con su entorno. El sector educativo interactúa con el sector productivo gracias a un trabajo de sinergia que facilita el acceso a talento humano capacitado y acorde a las necesidades del sector productivo nacional y regional, enfocándose a una educación de talla internacional. Este artículo abordó entonces, en la pertinencia de los programas técnicos y tecnológicos ofrecidos por el SENA Centro Agroempresarial Regional César, como también la pertinencia de los aprendices en el ámbito laboral regional. Así pues, se encontró que la manera en que se definen los programas a ofrecer debe ser reestructurada, incluyendo no sólo la oferta laboral, sino también la demanda estudiantil de aprendices, pues según los datos, uno o dos programas llegan a formar el 25% a 30% de los aprendices mientras que esta misma cifra de aprendices certificados se logra también con 34 programas de menos de 30 personas

    Nueva economía global: América Latina en el contexto internacional del siglo XXI

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    The new world and globalization have motivated nations to establish commercial relations as a strategy of regional integration and strengthening their economic systems, contributing to growth and development as part of promotion of their economic, social and environmental conditions; From this thought, this document is aimed to develop a documentary review of the international economy in current society, such a way from discussion of related aspects, essential elements for economy on a global context have been retrieved; To this A documented review of secondary information has been proposed, which facilitated the characterization of Latin American context and performance of its open economies.El nuevo mundo y la globalización han motivado a las naciones a establecer relaciones comerciales como estrategia de integración regional y fortalecimiento de sus sistemas económicos, contribuyendo a su crecimiento y desarrollo como parte del impulso de sus condiciones económicas, sociales y ambientales; desde esta reflexión este documento presenta la finalidad de desarrollar una revisión de la economía internacional en la sociedad del hoy, de tal forma que a partir de la discusión de aspectos relacionados se recuperen los elementos esenciales para la economía en un contexto global; para ello se ha propuesto una revisión documentada de información secundaria que facilitó la caracterización del contexto latinoamericano y el desempeño de las economías abiertas

    Insulinotropic Effect of the Non-Steroidal Compound STX in Pancreatic β-Cells

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    The non-steroidal compound STX modulates the hypothalamic control of core body temperature and energy homeostasis. The aim of this work was to study the potential effects of STX on pancreatic β-cell function. 1–10 nM STX produced an increase in glucose-induced insulin secretion in isolated islets from male mice, whereas it had no effect in islets from female mice. This insulinotropic effect of STX was abolished by the anti-estrogen ICI 182,780. STX increased intracellular calcium entry in both whole islets and isolated β-cells, and closed the KATP channel, suggesting a direct effect on β-cells. When intraperitoneal glucose tolerance test was performed, a single dose of 100 µg/kg body weight STX improved glucose sensitivity in males, yet it had a slight effect on females. In agreement with the effect on isolated islets, 100 µg/kg dose of STX enhanced the plasma insulin increase in response to a glucose load, while it did not in females. Long-term treatment (100 µg/kg, 6 days) of male mice with STX did not alter body weight, fasting glucose, glucose sensitivity or islet insulin content. Ovariectomized females were insensitive to STX (100 µg/kg), after either an acute administration or a 6-day treatment. This long-term treatment was also ineffective in a mouse model of mild diabetes. Therefore, STX appears to have a gender-specific effect on blood glucose homeostasis, which is only manifested after an acute administration. The insulinotropic effect of STX in pancreatic β-cells is mediated by the closure of the KATP channel and the increase in intracellular calcium concentration. The in vivo improvement in glucose tolerance appears to be mostly due to the enhancement of insulin secretion from β-cells

    Velocity-Based Heuristic Evaluation for Path Planning and Vehicle Routing for Victim Assistance in Disaster Scenarios

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    Published in "Robot 2019: Fourth Iberian Robotics Conference. Advances in Intelligent Systems and Computing, Vol 1093. Silva M., Luís Lima J., Reis L., Sanfeliu A., Tardioli D. (eds)" published by Springer, Cham. Avalaible online at: https://doi.org/10.1007.987-3-030-36150-1_10Natural and human-made disasters require effective victim assistance and last-mile relief supply operations with teams of ground vehicles. In these applications, digital elevation models (DEM) can provide accurate knowledge for safe vehicle motion planning but grid representation results in very large search graphs. Furthermore, travel time, which becomes a crucial cost optimization criterion, may be affected by inclination and other challenging terrain characteristics. In this paper, our goal is to evaluate a search heuristic function based on anisotropic vehicle velocity restrictions for building the cost matrix required for multi-vehicle routing on natural terrain and disaster sites. The heuristic is applied to compute the fastest travel times between every pair of matrix elements by means of a path planning algorithm. The analysis is based on a case study on the ortophotographic-based DEM of natural terrain with different target points, where theUniversidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. This work has received funding from the national project RTI2018-093421-B-I00 (Spanish Government), the University of Malaga (Andalucía Tech) and the grant BES-2016-077022 of the European Social Fund

    The Role of Oestrogen Receptor Beta (ERβ) in the Aetiology and Treatment of Type 2 Diabetes Mellitus

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    Introduction: Challenges facing the treatment of type 2 diabetes necessitate the search for agents which act via alternative pathways to provide better therapeutic outcomes. Recently, an increasing body of evidence implicates the activation of oestrogen receptors (ERα and ERβ) in the development and treatment of underlying conditions in type 2 diabetes. This article summarizes available evidence for the involvement of oestrogen receptors in insulin secretion, insulin resistance as well as glucose uptake and highlights the potential of ERβ as a therapeutic target. Background: Recent studies indicate an association between the activation of each of the isoforms of ER and recent findings indicate that ERβ shows promise as a potential target for antidiabetic drugs. In vitro and in vivo studies in receptor knockout mice indicate beneficial actions of selective agonists of ERβ receptor and underscore its therapeutic potential. Conclusion: Studies are needed to further elucidate the exact mechanism underlying the role of ERβ activation as a therapeutic approach in the management of type 2 diabetes

    Reversed-phase liquid chromatography coupled on-line to estrogen receptor bioaffinity detection based on fluorescence polarization

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    We describe the development and validation of a high-resolution screening (HRS) platform which couples gradient reversed-phase high-performance liquid chromatography (RP-HPLC) on-line to estrogen receptor α (ERα) affinity detection using fluorescence polarization (FP). FP, which allows detection at high wavelengths, limits the occurrence of interference from the autofluorescence of test compounds in the bioassay. A fluorescein-labeled estradiol derivative (E2-F) was synthesized and a binding assay was optimized in platereader format. After subsequent optimization in flow-injection analysis (FIA) mode, the optimized parameters were translated to the on-line HRS bioassay. Proof of principle was demonstrated by separating a mixture of five compounds known to be estrogenic (17β-estradiol, 17α-ethinylestradiol and the phytoestrogens coumestrol, coumarol and zearalenone), followed by post-column bioaffinity screening of the individual affinities for ERα. Using the HRS-based FP setup, we were able to screen affinities of off-line-generated metabolites of zearalenone for ERα. It is concluded that the on-line FP-based bioassay can be used to screen for the affinity of compounds without the disturbing occurrence of autofluorescence

    Urinary Bisphenol A and Type-2 Diabetes in U.S. Adults: Data from NHANES 2003-2008

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    Bisphenol A (BPA) is found in plastics and other consumer products; exposure may lead to insulin resistance and development of type-2 diabetes mellitus (T2DM) through over-activation of pancreatic β-cells. Previous studies using data from the National Health and Nutrition Examination Survey (NHANES) showed an inconsistent association between prevalence of self-reported T2DM and urinary BPA. We used a different diagnosis method of T2DM (hemoglobin A1c (HbA1c)) with a larger subset of NHANES.We analyzed data from 4,389 adult participants who were part of a sub-study of environmental phenol measurements in urine from three NHANES cycles from 2003 to 2008. T2DM was defined as having a HbA1c ≥6.5% or use of diabetes medication. The weighted prevalence of T2DM was 9.2%. Analysis of the total sample revealed that a two-fold increase in urinary BPA was associated with an odds ratio (OR) of 1.08 of T2DM (95% confidence interval (CI), 1.02 to 1.16), after controlling for potential confounders. However, when we examined each NHANES cycle individually, we only found a statistically significant association in the 2003/04 cycle (n = 1,364, OR = 1.23 (95% CI, 1.07 to 1.42) for each doubling in urinary BPA). We found no association in either the NHANES cycle from 2005/06 (n = 1,363, OR = 1.05 (95% CI, 0.94 to 1.18)); or 2007/08 (n = 1,662, OR = 1.06 (95% CI, 0.91 to 1.23)). Similar patterns of associations between BPA and continuous HbA1c were also observed.Although higher urinary BPA was associated with elevated HbA1c and T2DM in the pooled analysis, it was driven by data from only one NHANES cycle. Additional studies, especially of a longitudinal design with repeated BPA measurements, are needed to further elucidate the association between BPA and T2DM
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