Artículos Open Access: Envíos recientes
Mostrando ítems 101-120 de 395
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Geology and tectonic evolution of the western Guerrero terrane¿a transect from Puerto Vallarta to Zihuatanejo, Mexico.
(Universidad Nacional Autónoma De México, Instituto De Geología, Publicación Especial 1, 2003-01)The Guerrero terrane is a composite terrane mostly characterized by submarine and rarely subaereal volcanic and sedimentary successions that range in age from Upper Jurassic (Tithonian) to middle Upper Cretaceous (Cenomanian). ... -
U-Pb geochronology of granitoids in the north-western boundary of the Xolapa Terrane.
(Revista Mexicana de Ciencias Geológicas, 2009-01)The Sierra Madre del Sur, a Mesozoic-Cenozoic magmatic arc in southern Mexico, was studied using U-Pb zircon geochronology. Undeformed to slightly deformed plutons from two transects were sampled at the limit between the ... -
New age constraints on magmatism and metamorphism of the Western Sonobari Complex and their implications for an earliest Late Cretaceous orogeny on northwestern Mexico.
(Revista Mexicana De Ciencias Geológicas, 2016-01)The Western Sonobari Complex in northwestern Mexico is composed of orogenic metamorphic rocks intruded by a variety of unmetamorphosed plutons and dikes. Petrologic studies and U-Pb geochronology allow dividing the protolith ... -
Nutrición química y orgánica en aguacate Hass en Filo de Caballos, Guerrero, México.
(Revista Mexicana de Ciencias Agrícolas, 2015-06-29)The study was conducted in the village of Filo de Caballos, municipality of Leonardo Bravo, Guerrero, Mexico, from November 2011 to October 2012, in an orchard of Hass avocado, 5 years old. The objective was to evaluate ... -
Temporal and spatial hydrogeochemical evolution and lead isotopic composition of a contaminated stream of Taxco, Guerrero, Mexico.
(Revista Mexicana De Ciencias Geológicas, 2020-01)Discharge of Acid Mine Drainage (AMD) produced within flooded mines is a major environmental issue in most polymetallic mining sites severely impacting nearby natural resources and producing a serious menace to the ecosystem ... -
Procesos de transporte de arsénico y metales en aguas superficiales del distrito minero de Taxco, México: Aplicación de isótopos estables.
(Hidrobiológica, 2014-01)Water isotopic ratios 18O/16O, 2 H/H and 34S/32S in dissolved sulfates were measured to determine sulfur provenance and dominant processes of transport, and, distribution of As and metals in surface waters in the mining ... -
Caracterización morfológica de Agave angustifolia y su conservación en Guerrero, México.
(Revista Mexicana de Ciencias Agrícolas, 2019-05) -
Cultivo del langostino Macrobrachium tenellum, alimentado con Artemia franciscana la cual a su vez fue alimentada con dietas unialgales y mixtas de microalgas.
(TLAMATI, 2014-04)This study is focused on analyze growth of Macrobrachium tenellum¿s larvae that were fed by Artemia franciscana. M. tenellum was collected in the Juluapan lagoon, at Manzanillo, State of Colima, México. M. tenellum larvae ... -
Procedencia de la Formación La Casita y la Arcosa Patula: implicaciones para la evolución tectono-magmática del NE de México entre el Carbonífero y el Jurásico.
(Revista Mexicana De Ciencias Geológicas, 2014-01)During Valanginian-Hauterivian time, La Casita Formation (Monterrey trough) and the Patula Arkose (Sabinas basin) formed sedimentary units distributed in the southeast and northeast edge of the Coahuila block. The present ... -
Potentially toxic elements determination and chemical-microbiological analysis of potable water in Taxco de Alarcón, Guerrero.
(Revista Mexicana De Ciencias Geológicas, 2019-02)Taxco de Alarcón is an important mining site in Mexico. The town is a well-known tourist destination where the potable water quality is important for guaranteeing the health of the users. Due to the altitude of the city, ... -
Fraccionamiento geoquímico de elementos potencialmente tóxicos en los jales mineros del Depósito Guerrero I de Taxco de Alarcón, Guerrero, México.
(Tlamati, 2019-12)Quantification of toxic element¿s contents associated with different chemical fractions of mining tailings is essential to assess their true impact on environment, since these measures provide necessary information about ... -
Estrategia teórico-didáctica para formar el concepto de gráfica y función lineal en el registro geométrico.
(Revista de Didáctica de las Matemáticas, 2020-01)A theoretical-didactic strategy is presented with a variational approach that favors the formation of the concept of linear function and that breaks with the classic presentation treated in the texts and other support ... -
Teaching-learning about optimization problems: a close up through the use of GeoGebra software.
(International Journal of Research in Education Methodology, 2019-01)A teaching-learning proposal is described for the treatment of optimization problems in the pre-university student. The theoretical-methodological elements fall into the heuristic principles and resources and the use of ... -
Propuesta teórico-didáctica para la enseñanza y aprendizaje del concepto del área.
(PREMISA, 2019-04)A theoretical-didactic proposal for the planning of teaching of the concept of area of simple polygons in the preuniversity is described. It presents two hypothetical learning trajectories, the first is based on counting ... -
Tratamiento del análisis de funciones en el bachillerato, propuesta de una ingeniería didáctica.
(Acta Latinoamericana de Matemática Educativa, 2018-01)The teaching-learning process of education in Mexico establishes that students¿ knowledge should be developed. It motivates us to look for alternatives that respond to the requirements stated in the educational reform and ... -
The Theoretical didactic approach to the counterexample in mathematics.
(International Journal of Research in Education Methodology, 2018-01)This article describes a theoretical-didactic approach to the counterexample within mathematics and its process of teaching-learning, emphasizing the importance of inducing a logical thinking by introducing counterexamples ... -
Propuesta didáctica para la enseñanza de la traslación de coordenadas y su uso en la graficación de curvas.
(Revista Premisa, 2016-01)En este trabajo se presenta una propuesta didáctica en la que se describe la utilidad del software GeoGebra como un recurso heurístico para la enseñanza y aprendizaje en el nivel preuniversitario de la graficación de algunas ... -
Recursos heurísticos para la actividad de enseñanza de las transformaciones geométricas en el nivel preuniversitario.
(Revista Científico Pedagógica, 2016-01)This article describes a teaching strategy to promote education planning isometric transformation: translation, in the pre-university level. The methodological theoretical framework that underpins the work fall on the ... -
El protocolo familiar: Herramienta para la transferencia generacional de las empresas familiares
(Revista del Centro de Graduados. Instituto Tecnológico de Mérida, 2020-03-31)In Mexico, more than 90 % of the companies are family owned. Despite its relevance in the national economy, several authors agree that they suffer the most from high mortality rates, primarily as a result of the transfer ... -
Strategic environmental planning in tropical countries: Elements for the sustainable management of water resources
(Journal of Xi'an University of Architecture & Technology, 2020-01)This manuscript considers elements for the formulation of strategic axes in the environmental planning of the water resource in tropical countries, differentiating the strategic, functional planning and the environmental ...