Resultados de búsqueda - ((((((samy OR sum) OR (same OR asume)) OR usura) OR sumaay) OR ((usuma OR asuma) OR usum)) OR sumo)

Deposition of BiOBr thin films by thermal evaporation and evaluation of its photocatalytic activity por López Cuéllar, Enrique Manuel, Martínez de la Cruz, Azael, Chávez Torres, N., Olivares Cortez, José Luis

“…The analysis by XRD of the thin film deposited confirmed the formation of BiOBr, showing a high degree of specific crystal orientation in {0 0 1} planes. In the same way, SEM analysis showed that the deposition of oxide took place by formation of plates and small particles with shape of flowers. …”
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Analysis of multiple change-points in normally distributed series por Garza Venegas, Jorge Arturo

“…Maximum Likelihood estimators for change-points as well as for parameters were developed considering three cases based on single step change problem: (1) multiple changes only in the mean, (2) multiple changes only in variance and (3) multiple changes in both parameters at the same time. Obtaining these change-points MLEs could be considered as an optimization problem, so a Construction Heuristic and a Genetic Algorithm (Evolutionary) were developed based on them. …”
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Molecular dynamics of free and graphite-supported Pt-Pd nanoparticles por Fernández Navarro, Carlos Javier, Mejía Rosales, Sergio

“…The melting transition temperature was found to increase when the particle is on the graphite support, with an increase at least 180 K higher than that of the same-sized free nanoparticle. The results of the density distributions perpendicular to the surface indicate that the Pd atoms have a tendency to remain at the surface, and the Pd atoms wet the graphite surface more than the Pt atoms, while root mean squares suggest that surface melting starts from the cluster surface, and surface melting was seen in both free and graphite-supported nanoparticles. …”
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Analysis of multiple change-points in normally distributed series por Garza Venegas, Jorge Arturo

“…Maximum Likelihood estimators for change-points as well as for parameters were developed considering three cases based on single step change problem: (1) multiple changes only in the mean, (2) multiple changes only in variance and (3) multiple changes in both parameters at the same time. Obtaining these change-points MLEs could be considered as an optimization problem, so a Construction Heuristic and a Genetic Algorithm (Evolutionary) were developed based on them. …”
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Estrategias de retención de empleados eficientes: Importancia estratégica de la fidelización de los empleados en organizaciones internacionales. por Barragán, J., Castillo, P., Villalpando, P., Guerra, P.

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La otra cara del COVID-19 por González García, Laura, Delgado Ortiz, Ana Victoria

“…El desempleo y la violencia en el hogar han tenido un incremento considerable desde el inicio de la cuarentena, además, se han reafi rmado los roles tradicionales de género, que se creían hasta hace poco superados, entre otras interesantes consideraciones.SummaryThe health contingency due to COVID-19 has an impact in diff erent social problems that have been intensifi ed, since people are under the same roof for long periods of time and sometimes, they have been unemployed due to the closure of some sources of employment. …”
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El papel de la industria maquiladora en Ciudad Juarez por Castellanos, Araceli

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Los retos de la cadena de suministro ante la pandemia de COVID-19 por Casillas-Álvarez, Héctor Ramón, Ortiz-Barrera, Manuel Alfredo

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Metabolomic and biodirected phytochemical study of Hechtia glomerata, evaluation of its antibacterial and cytotoxic activity, and determination of the mechanism of action of one ac... por Stefani, Tommaso

“…Purpose of the study: The pharmaceutical industry has left the active research and development of new antibiotics, and the lack of new molecules caused the antibacterial resistance to become an even more threatening issue. At the same time cancer resistance is also thriving, making old chemotherapeutic drugs useless. …”
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Metabolomic and biodirected phytochemical study of Hechtia glomerata, evaluation of its antibacterial and cytotoxic activity, and determination of the mechanism of action of one ac... por Stefani, Tommaso

“…Purpose of the study: The pharmaceutical industry has left the active research and development of new antibiotics, and the lack of new molecules caused the antibacterial resistance to become an even more threatening issue. At the same time cancer resistance is also thriving, making old chemotherapeutic drugs useless. …”
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VALORES DE LA FIGURA DE REY-OSTERRIETH EN PROMEDIOS, REPROBACIÓN, AGRESIVIDAD FÍSICA Y DESERCIÓN. ESTUDIO REALIZADO EN ESCOLARES DE NUEVO LEÓN, MÉXICO por Flores Aréchiga, Amador, Garza González, Marco Tulio, Llaca Díaz, Jorge, Gómez Espinel, Irene A.

“…In secondary, H 12.9, 24.3 and 41.1, in the same order. M 8.1, 7.6 and 18.4. The M obtained lower than H, except ≥9.1 average, which is higher values. …”
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Métricas contables como factores críticos del desempeño financiero: Evidencia de fusiones y adquisiciones en México. (Accounting metrics as critical factors affecting financial... por Méndez Sáenz, Alma Berenice, Hinojosa Treviño, Sergio Raul

“…La relación riesgo-rendimiento de los activos se ha estimado de manera eficiente por el CAPM de Sharpe (1964). El modelo asume una eficiencia en media-varianza en condiciones de equilibrio bajo incertidumbre, y considera que todo el riesgo sistemático es medido por el coeficiente beta del modelo. …”
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Métricas contables como factores críticos del desempeño financiero: Evidencia de fusiones y adquisiciones en México. por Méndez Sáenz, Alma Berenice, Hinojosa Treviño, Sergio Raúl

“…La relación riesgo-rendimiento de los activos se ha estimado de manera eficiente por el CAPM de Sharpe (1964). El modelo asume una eficiencia en media-varianza en condiciones de equilibrio bajo incertidumbre, y considera que todo el riesgo sistemático es medido por el coeficiente beta del modelo. …”
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Accelerated and natural carbonation of concretes with internal curing and shrinkage/viscosity modifiers por Durán Herrera, Alejandro, Mendoza Rangel, José Manuel, Santos Rodríguez, Edgar Ulises de los, Vázquez, F., Valdez Tamez, Pedro Leobardo, Bentz, Dale P.

“…For both the accelerated and natural exposures, the lowest carbonation coefficients are obtained for two mixtures, one containing the shrinkage/viscosity modifier added in the mixing water and the other containing a solution of the same admixture used to pre-wet fine lightweight aggregate. …”
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Iniltration vs. instillation of ropivacaine 7.5% in radical mastectomies for postoperative analgesia por Yolanda Prieto, Blanca Irma, Millán Corrales, Alba Lorena, Palacios Ríos, Dionicio, Garduño Chávez, Belia Inés, López Cabrera, Norma Guadalupe, Millán Cornejo, Gustavo Adolfo, González Rocha, B. T.

“…Conclusions: This study reported the same eficacy of preventive treatment of postoperative pain in patients who underwent radical mastectomy for instillation and iniltration with 7.5% ropivacaine and little need for rescue medication postoperatively.…”
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Financial performance and stock prices into delisting companies in MSE (Desempeño financiero y precios de las acciones en companias delistadas en la BMV) por García, Heriberto

“…After the adoption of new regulations in Corporate Governance practices and Transparency following the trend of international financial markets, Mexican Stock Exchange has decreased in number of public companies during the last three decades we explored a comprehensive list of delisted companies during the same period to analyze and understand the motives and reasons of the deregistration process in Mexico. …”
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Use of iodine to biofortify and promote growth and stress tolerance in crops por Medrano Macías, Julia Rosa, Leija Martínez, Paola, González Morales, Susana, Juárez Maldonado, Antonio, Benavides Mendoza, Adalberto

“…Therefore, great efforts are made to ensure the proper intake of iodine to the population, for example, the iodization of table salt. In the same way, as an alternative, the use of different iodine fertilization techniques to biofortify crops is considered an adequate iodine supply method. …”
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Innate host selection in Anopheles vestitipennis from southern Mexico. por Ulloa García, Armando, Arredondo Jiménez, Juan Ignacio, Fernández Salas, Ildefonso, Rodríguez, Mario Henry, González Cerón, Lilia

“…Host selection experiments in the Lacandón Forest revealed the same trend. These findings suggested that the complex mode of inheritance that resulted in female mosquitoes showing a stronger tendency to return to their preferred host was obscured by the nature of the method of collection, i.e., wild parental females selecting a host either innately or opportunistically, the majority of which were likely innately attracted. …”
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Size, Age, and Spatial-Temporal Distribution of Shortfin Mako in the Mexican Pacific Ocean por Carreón Zapiain, María Teresa, Favela Lara, Susana, González Pérez, Jaime Otilio, Tavares, R., Leija Tristán, Antonio, Mercado Hernández, Roberto, Compeán Jiménez, G. A.

“…By using the inverse von Bertalanffy equation and parameters described by other authors for the same study area, we determined the age range for individuals captured on the basis of their TL. …”
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Sistema de guía, navegación y retroalimentación para un misil tierra-aire a través de sistemas híbridos por Limón Díaz, Pedro Antonio

“…This module is composed by an accelerometer, gyroscope, magnetometer, barometer, temperature sensor (that are co-integrated in the same board) and an IR camera. 2) Flight computer module. …”
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