166 research outputs found

    Cartographies as Spaces of Inquiry on Secondary Teachers’ Learning Nomadic Trajectories

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    Creencias populares y lactancia materna exclusiva madres adolescentes primerizas, Maternidad de MaríaChimbote 2019

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    El estudio tuvo como objetivo determinar la relación entre creencias populares y lactancia materna exclusiva en madres adolescentes primerizas atendidas en la Maternidad de María de Chimbote. Es una investigación básica con diseño no experimental transeccional correlacional-causal, con muestreo aleatorio conformado por 83 madres adolescentes atendidas cuyo hijo recibió atención en la Maternidad María durante el mes de marzo del año 2019.Tesi

    Synergism of microorganisms and seaweed extract on vegetative growth, yield and quality of cucumber fruit

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    Natural biostimulants, such as microorganisms and seaweed extracts, are used in agriculture to improve crop yields with a sustainable approach. However, the interaction effects between different biostimulants have not been thoroughly investigated. The objective of this work was to evaluate the synergistic effects of microorganisms (Glomus intraradices and Azospirillum brasilense) and seaweed extract (Ascophyllum nodosum and Macrocytis pyrifera) on growth, yield and fruit quality of cucumber plants under soilless cultivation. Two doses of microorganisms (0 and 10 spores mL-1 + 106 CFU) and four concentrations of seaweed extract (0, 250, 500 and 2500 ppm) were evaluated. The experimental design used was a randomized complete block design with a factorial arrangement (2 x 4), with four replications per treatment. The results showed that the equatorial diameter of the fruit, yield and titratable acidity improve when applying microorganisms and seaweed extract in combination; however, when applying the two biostimulants the values ​​of plant height, stem diameter, number of leaves, root length, biomass (fresh and dry), firmness, total soluble solids, vitamin C, chlorophyll (a and total) and indices of color (L* and b*) did not exceed those obtained when the biostimulants were applied individually. The combined application of microorganisms and seaweed extract improves cucumber yield, but not vegetative growth and, except for titratable acidity, fruit quality attributes

    Gerencia democrática y las relaciones interpersonales en las instituciones educativas de la RED-13 UGEL 02-2013

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    La investigación titulada: “Gerencia democrática y las relaciones interpersonales en las instituciones educativas de la RED 13 UGEL 02-2013”; tuvo como problema general ¿Cuál es la relación entre gerencia democrática y las relaciones interpersonales en las instituciones educativas de la RED 13 UGEL 02 - 2013? La investigación se realizó empleando el diseño no experimental, descriptivo correlacional, porque se determinó la relación entre las variables de estudio, apoyándose en el método hipotético deductivo; la muestra estuvo conformada por 139 docentes, para la recopilación de datos se utilizó un cuestionario para cada variable, el análisis de los datos se realizó con la correlación de Spearman. Por lo tanto, se comprobó que : la gerencia democrática se relaciona positivamente con las relaciones interpersonales en las Instituciones Educativas de la Red-13 UGEL 02 – 2013 (correlación de Spearman = 0.351, p=0.000),así como la dimensión emprendedor y competitivo, capacidad crítica y autocorrectiva, integridad moral y ética, habilidad comunicativa y motivación personal de la gerencia democrática con las relaciones interpersonales en las Instituciones Educativas de la Re-13 UGEL 02 – 2013

    Mechanical properties and fire-resistance of composites with marble particles

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    The main aim of this work is to manufacture a composite material based on a natural material (marble) with acceptable mechanical properties and fire resistance, for being used in habitat industry as floor or wall in buildings. Marble used as raw material is the waste powder of quarry or plate manufacturing. To achieve this objective, polyester matrix composites with 50 wt.% of marble and 3 wt.% of glass fiber (short fiber or mesh) were prepared. The novelty of this study is the high percentage of ceramic material added to a polymer matrix composite and the fire resistance study. Samples were characterized mechanically through flexural test, Charpy impact test, compression test and wear resistance by pin-on-disk test. Fracture surfaces were analyzed by scanning electron microscope (SEM), and wear tracks were studied by SEM and 3D optical profilometer. Besides, samples were subjected to fire test using a Bunsen burner at 900 °C for 20 min. Sample temperature at the opposite-to-fire test side was measured with an infrared thermometer. Results show that marble improves mechanical properties of polyester and the effect of the glass fiber depends on its morphology (fiber or mesh). Fire resistance is high, and the fire goes out when the flame is turned off. Furthermore, the mesh maintains the integrity of the sample.This research received funding from the SUDOE project SOE1/P1/E307

    EFECTIVIDAD DE LA GUÍA DE PRÁCTICAS CLÍNICAS PARA PACIENTES CON CHOQUE HEMORRÁGICO TRAUMÁTICO

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    Severe trauma causes 5.8 million annual deaths, traumatic hemorrhagic shock causes half of these deaths. There are no studies in the province of Sancti Spíritus on the effectiveness analysis of the clinical practice guideline designed for patients with traumatic hemorrhagic shock. The Objective was analyze the effectiveness of the clinical practice guideline for hospitalized patients with traumatic hemorrhagic shock. An observational, analytical, cross-sectional study was carried out in patients admitted with traumatic hemorrhagic shock at the Hospital General Provincial Camilo Cienfuegos de Sancti Spíritus, during the years 2012 to 2019, to compare the results before and after the implementation of a guideline of clinical practice. The variables were grouped into sociodemographic, chronic diseases, injury mechanism, type of trauma, topographic location, early complications, medical-surgical treatment and early mortality and as indicators of effectiveness, adherence to the guideline, time between admission and start of definitive treatment and early mortality. Male patients (84%), 60 years and younger (82.1%), hypertensive, (45%) with blunt trauma, (60.7%) polytraumatized, (47.5%) hypothermic prevailed, (38.4%) and with acute coagulopathy, (32%) and an early mortality of 12.3%. The purpose of the indicators was fulfilled. The purposes of the quality indicators assumed in the research were fulfilled and the effectiveness of the clinical practice guideline for the diagnosis and hospital treatment of patients with traumatic hemorrhagic shock was demonstrated.El trauma grave ocasiona 5,8 millones de defunciones anuales, el choque hemorrágico traumático causa la mitad de estas muertes. Se carece de estudios en la provincia de Sancti Spíritus sobre análisis de efectividad de la guía de práctica clínica diseñada para pacientes con choque hemorrágico traumático. El objetivo fue analizar la efectividad de la guía de prácticas clínicas para pacientes hospitalizados con choque hemorrágico traumático. Se realizó un estudio observacional, analítico, transversal en pacientes ingresados con choque hemorrágico traumático en el Hospital General Provincial Camilo Cienfuegos de Sancti Spíritus, durante los años 2012 al 2019, para comparar los resultados antes y después de la implementación de una guía de práctica clínica. Las variables se agruparon en sociodemográficas, enfermedades crónicas, mecanismo lesional, tipo de trauma, localización topográfica, complicaciones precoces, tratamiento médico-quirúrgico y mortalidad precoz y como indicadores de efectividad, la adherencia a la guía, tiempo entre ingreso y comienzo del tratamiento definitivo y mortalidad precoz. Predominaron los pacientes del sexo masculino (84 %), con 60 años y menos (82,1 %), hipertensos, (45 %) con trauma contuso, (60,7 %) politraumatizados, (47,5 %) hipotérmicos, (38,4 %) y con coagulopatía aguda, (32 %) y una mortalidad precoz de 12,3 %. Se cumplió el propósito de los indicadores. Se cumplieron los propósitos de los indicadores de calidad asumidos en la investigación y se demostró la efectividad de la guía de práctica clínica para el diagnóstico y tratamiento hospitalario de pacientes con choque hemorrágico traumático

    Class IB-Phosphatidylinositol 3-Kinase (PI3K) Deficiency Ameliorates IA-PI3K-Induced Systemic Lupus but Not T Cell Invasion

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    Abstract Class I PI3K catalyzes formation of 3-poly-phosphoinositides. The family is divided into IA isoforms, activated by Tyr kinases and the IB isoform (PI3Kγ), activated by G protein-coupled receptors. Mutations that affect PI3K are implicated in chronic inflammation, although the differential contribution of each isoform to pathology has not been elucidated. Enhanced activation of class IA-PI3K in T cells extends CD4+ memory cell survival, triggering an invasive lymphoproliferative disorder and systemic lupus. As both IA- and IB-PI3K isoforms regulate T cell activation, and activated pathogenic CD4+ memory cells are involved in triggering systemic lupus, we examined whether deletion of IB could reduce the pathological consequences of increased IA-PI3K activity. IB-PI3Kγ deficiency did not abolish invasion or lymphoproliferation, but reduced CD4+ memory cell survival, autoantibody production, glomerulonephritis, and systemic lupus. Deletion of the IB-PI3Kγ isoform thus decreased survival of pathogenic CD4+ memory cells, selectively inhibiting systemic lupus development. These results validate the PI3Kγ isoform as a target for systemic lupus erythematosus treatment

    Cacao Pod Husk Flour as an Ingredient for Reformulating Frankfurters: Effects on Quality Properties

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    The cocoa pod husk is considered a source of dietary fiber with a high content of water-soluble pectins, bioactive compounds which should be viewed as a by-product with the potential to be incorporated into food. This study aimed to investigate the effect of adding different cocoa pod husk flour (CPHF) levels as a starch replacement for reformulating frankfurters. Results showed that the addition of 1.5 and 3.0% pod husk proportionally increased the frankfurter's fiber content by 0.49 ± 0.08 and 0.96 ± 0.19 g/100 g, which is acceptable for a product that does not contain fiber. Textural properties and sensory characteristics were affected when substituting the starch with CPHF, either totally or partially, although these samples had higher water content, hardness, and adhesiveness while springiness decreased. Non-adverse effects of nitrite on polyphenolic compounds content were evidenced in samples enriched with CPHF. The incorporation of CPHF did not significantly affect the color parameters (DeltaE < 3). Finally, the panelists indicated a sensation of the unsalted sausage, suggesting that CPHF may have natural mucoadhesion properties. In conclusion, in formulated meat products such as sausages, plant co-products such as cacao pod husks could be a valid new ingredient to improve technological parameters, functional characteristics, and stability
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