Resultados de búsqueda - (were OR cerco)*

  1. 61

    Predictors of in-hospital mortality in patients with non-variceal upper gastrointestinal bleeding por González González, José Alberto, Vázquez Elizondo, Genaro, García Compeán, Diego, Obed Gaytán Torres, Juan, Flores Rendón, Ángel Ricardo, Jáquez Quintana, Joel Omar, Garza Galindo, Aldo Azael, Cárdenas Sandoval, Martha Graciela, Maldonado Garza, Héctor Jesús

    Publicado 2011
    “…Patients: in a period between 2000 and 2009, all patients with NVUGB admitted to our hospital were studied. Demographical and clinical characteristics, endoscopic findings and laboratory tests were evaluated. χ² and Mann-Whitney U analyses were performed for comparisons, and binary logistic regression was employed to identify independent predictors of in-hospital mortality. …”
    Enlace del recurso
    Artículo
  2. 62

    Artificial neural network modeling of phenol adsorption onto barley husks activated carbon in an airlift reactor por Loredo Cancino, Margarita

    Publicado 2013
    “…Experimental data confirmed that the breakthrough curves were dependent on BHAC dosage, phenol initial concentration, air flow rate, and influent flow rate. …”
    Enlace del recurso
    Tesis
  3. 63

    Artificial neural network modeling of phenol adsorption onto barley husks activated carbon in an airlift reactor por Loredo Cancino, Margarita

    Publicado 2013
    “…Experimental data confirmed that the breakthrough curves were dependent on BHAC dosage, phenol initial concentration, air flow rate, and influent flow rate. …”
    Enlace del recurso
    Tesis
  4. 64

    Motivos de los estudiantes de la zona centro de México para elegir la licenciatura en nutrición por Coronel Núñez, Samuel, Pineda Sales, Isabel, Díaz García, Rafael, Reyes Méndez, Jorge Joel

    Publicado 2019
    “…The reasons were that were pointed out more frequently, both by the students who started the degree and by those who were close to concluding it were: a) Interest in working in the clinical area, b) Vocational orientation, c) Because in their family they had a problem of health related to nutrition. …”
    Enlace del recurso
    Artículo
  5. 65

    Artificial neural network modeling of phenol adsorption onto barley husks activated carbon in an airlift reactor por Margarita Loredo-Cancino

    Publicado 2013
    “…Experimental data confirmed that the breakthrough curves were dependent on BHAC dosage, phenol initial concentration, air flow rate, and influent flow rate. …”
    Enlace del recurso
    info:eu-repo/semantics/doctoralThesis
  6. 66
  7. 67

    Optimization in preparation process of V₂O₅ using symbolic regression α-β. por González Campos, Guillermo

    Publicado 2019
    “…Responses surfaces were made using the generated SR model and were compared showing different perspective in order to optimize the quantity of materials used for the preparation process of V2O5.…”
    Enlace del recurso
    Tesis
  8. 68

    Photon Shielding Features of Quarry Tuff por Malvagi, F., Vega Carrillo, Héctor René, Hernández Adame, Luis, Guzmán García, Karen Arlete, Ortiz Hernández, Arturo Agustín, Rodríguez Rodríguez, José Antonio, Juárez Alvarado, César Antonio, Malouch, F., Diop, C. M’. B., Miss, J., Trama, J. C.

    Publicado 2017
    “…Cantera is a quarry tuff widely used in the building industry; in this work the shielding features of cantera were determined. The shielding characteristics were calculated using XCOM and MCNP5 codes for 0.03, 0.07, 0.1, 0.3, 0.662, 1, 2, and 3 MeV photons. …”
    Enlace del recurso
    Artículo
  9. 69

    Optimization in preparation process of V₂O₅ using symbolic regression α-β. por González Campos, Guillermo

    Publicado 2019
    “…Responses surfaces were made using the generated SR model and were compared showing different perspective in order to optimize the quantity of materials used for the preparation process of V2O5.…”
    Enlace del recurso
    Tesis
  10. 70
  11. 71
  12. 72
  13. 73
  14. 74

    Electrochemical Evaluation of a Stainless Steel as Reinforcement in Sustainable Concrete Exposed to Chlorides por Santiago Hurtado, Griselda

    Publicado 2016
    “…For this research three concrete mixtures were produced, the first concrete was made with 100 % cement CPC 30R, the second mixture was considered sustainable concrete because using 80 % of cement CPC 30R and 20 % of silica fume and the third mixture was elaborated with 80 % of cement CPC 30R and 20 % of fly ash, these mixtures were designed according to the method ACI 211.1, in the specimens were embedded bars of AISI 304 stainless steel and AISI 1018 steel, the specimens were exposed in a solution at 3.5 % of NaCl, simulating a marine environment, for to evaluate the corrosion resistance were used electrochemical techniques of Half-Cell Potential, standard ASTM C-876-09 and the Linear Polarization Resistance, standard ASTM G59, results Ecorr and Icorr after 180 days of exposure show that, the best performance was presented concrete specimens produced with 20 % silica fume and reinforced with AISI 304 stainless steel, with corrosion potential (Ecorr) indicating a 10 % probability of corrosion and Icorr values that indicate a passivity level of corrosion.…”
    Enlace del recurso
    Artículo
  15. 75
  16. 76
  17. 77

    Spatial distribution of the larval indices of Aedes aegypti in Guadalupe, Nuevo León, Mexico, with circular distribution analysis por Mercado Hernández, Roberto, Fernández Salas, Ildefonso, Villarreal Martínez, Homero Fernando

    Publicado 2003
    “…Arguments corresponding to the mean angle of house (260 degrees), recipient (265 degrees), and Breteau (247 degrees) indices were 0.2321, 0.2331, and 0.2225, respectively. In addition, arguments for the mean angle of herbaceous (277 degrees), shrub (318 degrees), and arboreal (333 degrees) vegetation were 0.2589, 0.1984, and 0.2367, respectively, and the 3 were located in the 4th quadrant. …”
    Enlace del recurso
    Artículo
  18. 78

    Natural variability of essential oil and antioxidants in the medicinal plant Turnera diffusa por Urbizu González, Ana Lucía, Castillo Ruiz, Octelina, Martínez Ávila, Guillermo Cristian Guadalupe, Torres Castillo, Jorge Ariel

    Publicado 2017
    “…Polyphenol contents, antioxidant activities using ABTS and ferric reducing antioxidant power (FRAP) methods also were evaluated. Results: A total of 21 compounds were identified in the essential oils; nevertheless, only Eucalyptol, 1,4-Methanocycloocta[d]pyridazine, 1,4,4a,5,6,9,10,10a-octahydro-11,11- dimethyl-, (1`a,4`a,4a`a,10a`a) y Ethanone, 1-(1,3-dimethyl-3-cyclohexen-1-yl) were detected in the three sites. …”
    Enlace del recurso
    Artículo
  19. 79
  20. 80

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