Resultados de búsqueda - (( investigador OR investigation ) OR ( investigadores OR investigationes ))

Cation xanthated exchangers from colombian sub-bituminous coals effectively removed cadmium and lead from aqueous solutions por Gómez de Arco, Lewis, Alzate Rodríguez, Liliana, Colpas Castillo, Fredy, Fernández Maestre, Roberto

“…In Colombia, low rank coals are almost totally used for power and matallurgical aims, which are activities that produce contamination. In this investigation, as an alternative to the traditional use of low rank coals, we prepared cationic xanthated exchangers from a subbituminous coal (67.6%C, 4.6%H, 22.4%O, 0.6%S, 3.2% ashes and 46.2% volatile matter) of Montelíbano-Córdoba; this exchanger showed better exchange capacities for cadmium and lead (1.8 meq/g) than traditional sulphonated exchangers (0.56 and 1.11 meq/g for cadmium and lead respectively). …”
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Análisis bio-estratigráfico y microfacial de la formación Zuloaga en la Cañada Alardín, General Zaragoza, Nuevo León, México por Rivera Estrada, Consuelo Araceli

“…Based on this data, a Geo-Archaeological investigation was carried out with the purpose of establishing the stratigraphic secuence of the area, distinguishing microfacies and the characteristic micro-fossils association, based on thin sections analysis from the Zuloaga Fm., in order to explaining the depositional environment.…”
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From First Lady to presidential candidate: masculinization in news coverage of female politicians por Alvarez Monsiváis, Edrei

“…Among the conclusions we can highlight that women who run for presidential positions are forced to be more strategic in their political actions to be seen by citizens as capable of solving problems that are not culturally associated with femininity. The investigation concludes that the press placed the political woman in a paradox between being covered journalistically as women or as politicians, making them both eligible and ineligible for the presidency.…”
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Análisis bio-estratigráfico y microfacial de la formación Zuloaga en la Cañada Alardín, General Zaragoza, Nuevo León, México por Rivera Estrada, Consuelo Araceli

“…Based on this data, a Geo-Archaeological investigation was carried out with the purpose of establishing the stratigraphic secuence of the area, distinguishing microfacies and the characteristic micro-fossils association, based on thin sections analysis from the Zuloaga Fm., in order to explaining the depositional environment.…”
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La conservación del patrimonio bibliográfico: colecciones especiales de la Biblioteca UDEM: español por Diaz Tamez, Arnoldo David

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Conociendo la teoría de motivación de Daniel Pink, desde un enfoque cualitativo por Madero-Gómez, Sergio, Soto-Ontiveros, Carolina, Arias-Meza, Claudia

“…Se revisaron diferentes enfoques del concepto de la motivación realizada por diversos científicos e investigadores, tratada como un constructo singular, las aportaciones recientes sugieren que las personas son movidas a actuar por factores muy diferentes, con experiencias y consecuencias altamente variadas.…”
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Ambiente, salud y territorios. Reflexiones en torno a la producción de conocimiento a partir de un estudio de caso por Manildo, Luciana, Querejeta, Giselle

“…Por lo tanto, el estudio de caso es un recurso heurístico para desarrollar un ejercicio de interrogación sobre nuestra praxis como investigadores y como docentes, una invitación a subvertir las lógicas y los métodos convencionales en las que las relaciones entre ciencia y sociedad se constituyen.…”
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Estudio de clima organizacional en empresa de subcontratación de procesos de negocios por Moreno Quintana, Pablo Jorge

“…The results provided by this investigation identified the following aspects as opportunities for improvement in the organization; technological work equipment, work compensation, work pressure, physical comfort in the work place…”
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Análisis psicosocial del consumo de alcohol en adolescentes mexicanos por Villarreal González, María Elena, Sánchez Sosa, Juan Carlos, Musitu Ochoa, Gonzalo

“…The results are discussed in terms of the relevant studies on the subject of this investigation.…”
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Pulse quality analysis on soliton pulse compression and soliton self-frequency shift in a hollow-core photonic bandgap fiber por González Baquedano, N., Torres Gómez, Ismael, Arzate, N., Ferrando, A., Ceballos Herrera, Daniel E.

“…A numerical investigation of low-order soliton evolution in a proposed seven-cell hollow-core photonic bandgap fiber is reported. …”
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Zerovalent bismuth nanoparticles inhibit Streptococcus mutans growth and formation of biofilm por Hernández Delgadillo, René, Velasco Arias, Donaji, Diaz, David, Arévalo Niño, Katiushka, Garza Enriquez, Marianela, De la Garza Ramos, Myriam Angélica, Cabral Romero, Claudio

“…The objective of this investigation was to analyze the antimicrobial activity of bismuth nanoparticles against oral bacteria and their antibiofilm capabilities. …”
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Preparation of nanoparticulate TiO2 containing nanocrystalline phases of anatase and brookite by electrochemical dissolution of remelted titanium components por Ortega Díaz, D., Fernández, D., Sepúlveda, S., Lindeke, R. R., Pérez Bueno, J. J., Peláez Abellán, E., Manríquez, J.

“…In this investigation, we present an efficient electrochemical methodology to prepare nano-particulate TiO2 having a nano-crystalline composition of 40% Anatase and 60% Brookite, without need for subsequent thermal treatments (which are typically applied to alter the amount of amorphicity). …”
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Nutritional quality of protein flours of fava bean (Vicia faba L.) and in vitro digestibility and bioaccesibility por Ayala Rodríguez, Victor Andrés, López Hernández, Abad Arturo, López Cabanillas Lomelí, Manuel, González Martínez, Blanca Edelia, Vázquez Rodríguez, Jesús Alberto

“…This study supports the use and further investigation of fava bean proteins for human nutrition.…”
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Parameter Studies on High-Velocity Oxy-Fuel Spraying of CoNiCrAlY Coatings Used in the Aeronautical Industry por Cabral Miramontes, José Ángel, Gaona Tiburcio, Citlalli, Almeraya Calderón, Facundo, Estupiñan López, Francisco H., Pedraza Basulto, G. K., Poblano Salas, Carlos

“…MCrAlY type (M = Co, Ni or combination of both) coatings are used in wear and corrosion applications but also provide protection against high temperature oxidation and corrosion attack in molten salts. In this investigation, CoNiCrAlY coatings were produced employing a HVOF DJH 2700 gun. …”
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System identification applied to a single area electric power system under frequency response por Barrios Gómez, José Ángel, Gonzalez Longatt, Francisco, Claudio, Gianfranco

“…A SAEPS with different governors-turbine is presented: a hydraulic turbine, a steam turbine and a steam reheat turbine. In this same investigation, an analytic reduction has been performed, a fifth order system was found analytically, thus a transfer function equivalent to the three different governor-turbine elements was obtained, this equivalent transfer function models the complete behavior of the three devices. …”
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Forest volume estimation techniques with special emphasis on the tropics por Guzmán Santiago, Juan Carlos, Aguirre Calderón, Oscar Alberto, Vargas Larreta, Benedicto

“…Materials and methods: The work was developed with the non-probabilistic snowball technique, in which the bibliography reported in an investigation suggested the search for similar works to enrich the subject. …”
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Estudio de clima organizacional en empresa de subcontratación de procesos de negocios por Moreno Quintana, Pablo Jorge

“…The results provided by this investigation identified the following aspects as opportunities for improvement in the organization; technological work equipment, work compensation, work pressure, physical comfort in the work place…”
Enlace del recurso

Comprobación de los cuatros componentes de la creatividad como intangible de la mediación en México por Valdes-Espinosa, Eni

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Modelo de ecuaciones estructurales por el método de mínimos cuadrados parciales (Partial Least Squares-PLS) por Leyva Cordero, Oswaldo, Olague de la Cruz, José Trinidad

“…Cada vez más los investigadores se están interesando en conocer no sólo las características fundamentales de esta metodología sino, también cuando pueden o deben ser aplicadas. …”
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Modelo de ecuaciones estructurales por el método de mínimos cuadrados parciales (Partial Least Squares-PLS). por Leyva Cordero, Oswaldo, Olague de la Cruz, José Trinidad

“…Cada vez más los investigadores se están interesando en conocer no sólo las características fundamentales de esta metodología sino, también cuando pueden o deben ser aplicadas. …”
Enlace del recurso