Resultados de búsqueda - (((calara OR calata) OR magard) OR ((((alar OR (alter OR after)) OR tabular) OR tasa) OR tala))

  1. 561
  2. 562
  3. 563
  4. 564
  5. 565

    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
  6. 566

    Ionizing radiation-induced DNA injury and damage detection in patients with breast cancer por Borrego Soto, Gissela, Ortiz López, Rocío, Rojas Martínez, Augusto

    Publicado 2015
    “…This susceptibility may be related to deficiencies in DNA repair mechanisms that are activated after cell-radiation, which causes DNA damage, particularly DNA double strand breaks. …”
    Enlace del recurso
    Artículo
  7. 567

    Pb(core)/ZnO(shell) nanowires obtained by microwave-assisted method por Solís Pomar, Francisco, Meléndrez, Manuel F., Esparza, Rodrigo, Pérez Tijerina, Eduardo

    Publicado 2011
    “…The synthesis was performed using a conventional oven at 1000 W and 5 min of treatment. After synthesis, a spongy white cottonlike material was obtained in the condensation zone of the reaction system. …”
    Enlace del recurso
    Artículo
  8. 568
  9. 569

    Prácticas de responsabilidad social empresarial de Fenalco Atlántico por Angulo de la Hoz, Mayeli, Sanjuan Donado, Karelys, Lechuga Cardozo, Jorge Isaac

    Publicado 2014
    “…This article was to identify the practices of social responsibility at the National Retail Federation Fenalco Atlántico, after reviewing the main authors in the field of social responsibility, we conclude that such students should reflect on social responsibility, which already It is not only the state to its citizens but is everybody's responsibility, including private enterprise who is key to strengthening and implementing such programs. …”
    Enlace del recurso
    Artículo
  10. 570

    Developing self-efficacy through a massive open online course on study skills por Padilla Rodríguez, Brenda Cecilia, Armellini, Alejandro

    Publicado 2017
    “…Findings show statistically significant increases in general self-efficacy after completing the MOOC, as well as in the perceived self-efficacy related to five out of six study skills. …”
    Enlace del recurso
    Artículo
  11. 571

    Estructura y composición de especies arbóreas en bosques templados de la Sierra Madre del Sur, México. por Méndez Osorio, Cuauhtémoc

    Publicado 2018
    “…Passive restoration was evaluated ecosystem impacted by fire seven years after the disturbance. There was a tree density of 384 individuals / ha, distributed in five species, five genera and four families. …”
    Enlace del recurso
    Tesis
  12. 572

    Expression of the HPV18/E6 oncoprotein induces DNA damage por Cortés Gutiérrez, Elva Irene, García Vielma, Catalina, Aguilar Lemarroy, Adriana, Vallejo Ruíz, Veronica, Piña Sánchez, Patricia, Zapata Benavides, Pablo, Gosálvez, Jaime

    Publicado 2017
    “…The variable levels of DNA breaks present were measured quantitatively using image analysis after whole-genome DNA hybridization. HeLa cells with silenced expression of the HPV18/E6 oncogene showed a significant decrease in DNA damage compared with parental cells with normal expression of the E6oncogene. …”
    Enlace del recurso
    Artículo
  13. 573

    Electrochemical Reactivation of AISI 409 Ferritic Stainless Steel Sheet Welded by Laser Process with application in aeronautical por C. Ramírez-López, M

    Publicado 2017
    “…The susceptibility to sensitization in 409 ferritic stainless steel (FSS) weldments was studied, by means of double loop electrochemical potentiokinetic reactivation test (DL-EPR). After the electrochemical test, the microstructure was analyzed by scanning electron microscopy (SEM) and the presence of elements with dispersive energy of X-rays (EDS), with the X-ray diffraction (XRD) technique they were identified present phases in different welds. …”
    Enlace del recurso
    Artículo
  14. 574
  15. 575
  16. 576

    Psychometric parameters of the attitude/motivation test battery instrument in a mexican environment por Cocca, Michaela, Pérez García, José Alberto, Zamarripa Rivera, Jorge Isabel, Demetriou, Yolanda, Cocca, Armando

    Publicado 2017
    “…A sample of 252 University students filled in the questionnaire. After removing 11 items, the instrument showed high internal validity and suitable factorial structure. …”
    Enlace del recurso
    Artículo
  17. 577

    University Paradiplomacy: The internationalization of higher education in Latin America por García Waldman, David Horacio, Jiménez Quintana, Paulina, Zapata Morán, María Gabriela

    Publicado 2018
    “…The method of analysis was applied, with a qualitative approach, non-experimental design, under a transversal documentary-bibliographic level. After the documentary review, a brief analysis is carried out in which different internationalization strategies were found, as well as the historical processes that caused the Universities to expand. …”
    Enlace del recurso
    Artículo
  18. 578

    Leaving the Nest or Living with Parents: Evidence from Mexico’s Young Adult Population por García Andrés, Adelaido, Martínez, José N., Aguayo Téllez, Ernesto

    Publicado 2021
    “…Marginal effects from a probit regression model show that, after controlling for individual characteristics and retrospective family conditions, adult children’s education and employment status seem to be correlated with co-residence status, although only for males. …”
    Enlace del recurso
    Artículo
  19. 579

    Effect of cattle and wildlife exclusion areas on the survival and growth of Pinus culminicola Andresen & Beaman por Jiménez Pérez, Javier, Yerena Yamallel, José Israel, Alanís Rodríguez, Eduardo, Aguirre Calderón, Oscar Alberto, Martínez Barrón, René Alejandro

    Publicado 2018
    “…The objective of this study was to determine the survival rate and the increase in diameter and height of Pinus culminicola individuals at three and 17 years after planting. The results show diferences between 2000 and 2014 in survival rate and diameter and height growth in the three exclusion areas; E1 and E2 recorded higher averages. …”
    Enlace del recurso
    Artículo
  20. 580

    The crisis of democracy in Mexico: Chronicling the dismantling of democratic institutions por Gómez Díaz de León, Carlos

    Publicado 2024
    “…In recent years, Mexico has experienced significant transformations in the structure and functioning of its democratic institutions. After decades of authoritarianism, the twenty-first century illuminated the regime with an incipient democracy that was consolidated little by little. …”
    Enlace del recurso
    Sección de libro.

Herramientas de búsqueda: