Resultados de búsqueda - ((enso OR censo) OR (composition OR (compcppcppcendo OR (compcppcppcendo OR compcppcppcppppendo))))

Green Synthesis of Magnetic Nanoparticles of Iron Oxide Using Aqueous Extracts of Lemon Peel Waste and Its Application in Anti-Corrosive Coatings por Elizondo Villarreal, Nora, Verástegui Domínguez, Luz Hypatia, Rodríguez Batista, Raúl, Gándara Martínez, Eleazar, Alcorta García, Aracelia, Martínez Delgado, Dora Irma, Rodríguez Castellanos, Edén Amaral, Vázquez Rodríguez, Francisco Javier, Gómez Rodríguez, Cristian

“…The X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM) characterization showed that magnetite nanoparticles were successfully obtained with a very narrow particle size distribution between 3 and 10 nm. A composite was produced with the nanoparticles and graphene to be used as a surface coating on steel. …”
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A Study of the Corrosion Behavior of AHSS Complex-Phase CP 780 Employing an Electrochemical Noise Technique Analyzed by Different Methods por Lara Banda, María del Refugio, Almeraya Calderón, Facundo, Jáquez Muñoz, Jesús Manuel, Nieves Mendoza, Demetrio, Baltazar Zamora, Miguel Ángel, Olguín Coca, Javier, Estupiñan López, Francisco Humberto, Cabral Miramontes, José Ángel, Santiago Hurtado, Griselda, Gaona Tiburcio, Citlalli

“…Due to their mechanical properties, part of the chassis is a composite of advanced high-strength steels (AHSS). …”
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Development of a Novel Scaffold of Chitosan, Type IV Collagen and Integrin α3β1 As Alternative Scaffold for Primary Culture of Podocytes por Zárate Triviño, Diana Ginette, Hernández Martínez, Sara Paola, Bollain y Goytia de la Rosa, Juan José, Franco Molina, Moisés Armides, Elizalde Peña, Eduardo, Hernández Villegas, Margarita Idalia, Rangel Ochoa, Gloria Azucena, Rodríguez Padilla, Cristina

“…We obtained and characterized composites based on Chitosan (CTS), polyvinyl alcohol (PVA), type IV collagen and integrin α3β1 as a possible application in primary culture of podocytes. …”
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Petrology and geochemistry of meta-ultramafic rocks in the Paleozoic Granjeno Schist, northeastern Mexico: Remnants of Pangaea ocean floor por 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

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

“…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)]. …”
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Aspectos ecológicos del zarapito pico largo numenius americanus (Bechstein, 1812) en dos sitios de invernación del desierto chihuahuense por Olalla Kerstupp, Alina

“…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. …”
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Aspectos ecológicos del zarapito pico largo numenius americanus (Bechstein, 1812) en dos sitios de invernación del desierto chihuahuense por Olalla Kerstupp, Alina

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

“…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. …”
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Aluminosilicates as a Double-Edged Sword: Adsorption of Aflatoxin B1 and Sequestration of Essential Trace Minerals in an In Vitro Gastrointestinal Poultry Model por 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.

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

“…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. …”
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Incidencia de fracturas mandibulares en el Hospital Metropolitano de Monterrey: Estudio retrospectivo 2014-2017 por Duarte García, César Eduardo

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

“…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. …”
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Incidencia de fracturas mandibulares en el Hospital Metropolitano de Monterrey: Estudio retrospectivo 2014-2017 por Duarte García, César Eduardo

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

“…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. …”
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Crime Exposure and Educational Outcomes in Mexico (Violencia y desempeño académico en México) por Orraca Romano, Pedro Paulo

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Optimización de métodos de extracción de R-Ficoeritrina a partir de Porphyridium cruentum por Garza-Valverde, E., Cortez-Guardiola, S.A., Guzmán-Rodríguez, M.F., Vidales-Contreras, J.A., García-Gómez, C.

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El arribo de la mediación en el ámbito tributario ecuatoriano por Romero Jarrín, Fabián, Garza de la Vega, Daniel Alberto

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

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

“…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.…”
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Prácticas ecológicas con tabiques por Becerra Rodríguez, María Blanca, Franco Baltazar, Ángel Adad, Hernández Hernández, Arturo, López Navarro, Isabel Ernestina

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