Search Results - ((endo OR censo) OR (composition OR (compcppcppcendo OR (compcppcppcendo OR compcppcppcpppenso))))

  1. 481
  2. 482

    Petrology and geochemistry of meta-ultramafic rocks in the Paleozoic Granjeno Schist, northeastern Mexico: Remnants of Pangaea ocean floor by Torres Sánchez, Sonia Alejandra, Augustsson, Carita, Jenchen, Uwe, Barboza Gudiño, José Rafael, Alemán Gallardo, Eduardo Alejandro, Ramírez Fernández, Juan Alonso, Torres Sánchez, Darío, Abratis, Michael

    Published 2017
    “…We suggest different tectonic settings for metamorphism of its serpentinite and talc-bearing rocks based on petrographic and geochemical compositions. According to the REE ratios (LaN/YbN = 0.51–20.0 and LaN/SmN = 0.72–9.1) and the enrichment in the highly incompatible elements Cs (0.1 ppm), U (2.8 ppm), and Zr (60 ppm) as well as depletion in Ba (1 – 15 ppm), Sr (1–184ppm),Pb(0.1–14ppm),andCe(0.1–1.9ppm)the rocks have mid-ocean ridge and subduction zones characteristics.TheserpentinitecontainsAl-chromite,ferrian chromiteandmagnetite.TheAl-chromiteischaracterized byCr#of0.48to0.55suggestingaMORBorigin,andCr#of 0.93 to 1.00 for the ferrian chromite indicates a prograde metamorphism.Weproposeatleasttwoserpentinization stagesoflithosphericmantlefortheultramaficrockofthe GranjenoSchist,(1)afirstinanocean-floorenvironment atsub-greenschisttogreenschistfaciesconditionsand(2) later a serpentinization phase related to the progressive replacement of spinel by ferrian chromite and magnetite atgreenschisttolowamphibolitefaciesconditionsduring regional metamorphism. …”
    Get full text
    Article
  3. 483

    Corrosion Behavior of Galvanized Steel Embedded in Concrete Exposed to Soil Type MH Contaminated With Chlorides by Baltazar Zamora, Miguel Ángel, Mendoza Rangel, José Manuel, Croche, René, Gaona Tiburcio, Citlalli, López, Luis, Olguín, Francisco, Almeraya Calderón, Facundo

    Published 2019
    “…In such concrete specimens a carbon steel bar AISI 1018 and Galvanized Steel was embedded as reinforcement, the mixed concrete was of ratio water/cement (w/c) = 0.45 (compressive strength, f'c = 350 kg/cm2), according to ACI 211.1, using cements Portland Cement Composite [CPC 30R (Type I) and CPC 30R RS (Type V)]. …”
    Get full text
    Article
  4. 484

    Aspectos ecológicos del zarapito pico largo numenius americanus (Bechstein, 1812) en dos sitios de invernación del desierto chihuahuense by Olalla Kerstupp, Alina

    Published 2014
    “…El presente trabajo generó información confiable y novedosa sobre 4 aspectos ecológicos del zarapito pico largo durante su estadía invernal en dos sitios del Desierto Chihuahuense en México: censos poblacionales, dieta, usos de hábitat /migración y amenazas. …”
    Get full text
    Tesis
  5. 485

    Aspectos ecológicos del zarapito pico largo numenius americanus (Bechstein, 1812) en dos sitios de invernación del desierto chihuahuense by Olalla Kerstupp, Alina

    Published 2014
    “…El presente trabajo generó información confiable y novedosa sobre 4 aspectos ecológicos del zarapito pico largo durante su estadía invernal en dos sitios del Desierto Chihuahuense en México: censos poblacionales, dieta, usos de hábitat /migración y amenazas. …”
    Get full text
    Tesis
  6. 486

    Satisfaction of an employee in a sports entity: design and validation of a measurement scale by Reyes Robles, Marina, Medina Rodríguez, Rosa Elena, Ramírez Siqueiros, María Grethel, López Walle, Jeanette M., Ceballos Gurrola, Oswaldo

    Published 2018
    “…Satisfactory values were obtained, resulting in Kaiser-Meyer-Olkin values of .91, and the Bartlett test was statistically significant with a value (χ² = 3296.01, gl = 378; p <. 001), six factors were extracted with eigen values greater than 1 and that together explain 69.08% of the total variance. the indices of the model in the confirmatory factor analysis were satisfactory: χ2 / df = 1.29, NNFI = .99, CFI = .99, and RMSEA = .03., The results of internal consistency using Cronbach's alpha index with values in this case greater than .70, composite reliability (CR) with values between .88 and .94, and the average variance index extracted (AVE), meanwhile, alsoshowed adequate values, in a range between .60 and .83. …”
    Get full text
    Article
  7. 487

    Aluminosilicates as a Double-Edged Sword: Adsorption of Aflatoxin B1 and Sequestration of Essential Trace Minerals in an In Vitro Gastrointestinal Poultry Model by Hernández Martínez, Sara Paola, Delgado Cedeño, Armando, Ramos Zayas, Yareellys, Franco Molina, Moisés Armides, Méndez Zamora, Gerardo, Marroquín Cardona, Alicia Guadalupe, Kawas Garza, Jorge R.

    Published 2023
    “…X-ray diffraction analysis showed that C-1 is a montmorillonite, C-2 is a beidellite, C-3 is a beidellite-Ca-montmorillonite, and C-4 is a clinoptilolite. The elemental compositions of the clays showed alumina, silica, iron, calcium, and sodium contents. …”
    Get full text
    Article
  8. 488

    Relocation and seismotectonic interpretation of the seismic swarm of August – December of 2012 in the Linares area, northeastern Mexico by Gómez Arredondo, Carmen Maricela, Montalvo Arrieta, Juan Carlos, Iglesias Mendoza, Arturo, Espindola Castro, Victor H.

    Published 2016
    “…The fault plane solutions were generated for individual earthquakes and through the use of the composite mechanism technique. The focal mechanism solutions show pure reverse faulting; the SW dipping NNW – SSE trending nodal plane is the inferred fault plane (strike ~150°, dip ~50° and rake ~67°), which reveals that maximum horizontal stress (SHmax > Shmin > Sv) predominates in the area. …”
    Get full text
    Article
  9. 489

    Incidencia de fracturas mandibulares en el Hospital Metropolitano de Monterrey: Estudio retrospectivo 2014-2017 by Duarte García, César Eduardo

    Published 2021
    “…Bernardo Sepúlveda” SSNL, San Nicolás de los Garza, Monterrey en el periodo de 2014 al 2017 Material y métodos: Se realizo un estudio descriptivo, transversal y retrospectivo dentro del Servicio de Cirugía Maxilofacial, revisando los expedientes electrónicos y censos de consulta de los pacientes de consulta externa y urgencias que presentaron fractura mandibular en el Hospital Metropolitano de Monterrey “Dr. …”
    Get full text
    Tesis
  10. 490

    Estudio transversal ambispectivo de fracturas mandibulares en el hospital metropolitano “Dr. Bernardo Sepúlveda” SSNL, en el periodo de junio del 2017 - agosto del 2019 by Ruiz Martínez, Karla Isabel

    Published 2021
    “…Material y métodos: Se realizo un estudio transversal ambispectivo dentro del Servicio de Cirugía Maxilofacial del Hospital Metropolitano “Bernardo Sepúlveda” SSNL, revisando los expedientes electrónicos y censos de los pacientes de urgencias que presentaron fractura mandibular en el periodo de junio 2017 - agosto 2019. …”
    Get full text
    Tesis
  11. 491

    Incidencia de fracturas mandibulares en el Hospital Metropolitano de Monterrey: Estudio retrospectivo 2014-2017 by Duarte García, César Eduardo

    Published 2021
    “…Bernardo Sepúlveda” SSNL, San Nicolás de los Garza, Monterrey en el periodo de 2014 al 2017 Material y métodos: Se realizo un estudio descriptivo, transversal y retrospectivo dentro del Servicio de Cirugía Maxilofacial, revisando los expedientes electrónicos y censos de consulta de los pacientes de consulta externa y urgencias que presentaron fractura mandibular en el Hospital Metropolitano de Monterrey “Dr. …”
    Get full text
    Tesis
  12. 492

    Estudio transversal ambispectivo de fracturas mandibulares en el hospital metropolitano “Dr. Bernardo Sepúlveda” SSNL, en el periodo de junio del 2017 - agosto del 2019 by Ruiz Martínez, Karla Isabel

    Published 2021
    “…Material y métodos: Se realizo un estudio transversal ambispectivo dentro del Servicio de Cirugía Maxilofacial del Hospital Metropolitano “Bernardo Sepúlveda” SSNL, revisando los expedientes electrónicos y censos de los pacientes de urgencias que presentaron fractura mandibular en el periodo de junio 2017 - agosto 2019. …”
    Get full text
    Tesis
  13. 493
  14. 494
  15. 495
  16. 496

    Caracterización de las sucesiones areno - conglomeráticas del eoceno en la región de las Choapas, Veracruz. by Coronado González, Jesús Margil

    Published 2019
    “…With the isotope geochemistry of Sm/Nd, the isotopic ratios, model ages and Nd epsilon were obtained, in order to be correlated with data of possible source areas. Rocks with compositions similar to those identified in this work have been described in the Chiapas Massif and the Guichicovi Complex, in the Maya Block; and in complexes exhumed by the Polochic-Motagua Fault System, in Chortis Block.…”
    Get full text
    Tesis
  17. 497

    Caracterización de las sucesiones areno - conglomeráticas del eoceno en la región de las Choapas, Veracruz. by Coronado González, Jesús Margil

    Published 2019
    “…With the isotope geochemistry of Sm/Nd, the isotopic ratios, model ages and Nd epsilon were obtained, in order to be correlated with data of possible source areas. Rocks with compositions similar to those identified in this work have been described in the Chiapas Massif and the Guichicovi Complex, in the Maya Block; and in complexes exhumed by the Polochic-Motagua Fault System, in Chortis Block.…”
    Get full text
    Tesis
  18. 498
  19. 499
  20. 500

Search Tools: