Results 41 to 50 of about 75,992 (205)

Silence or Death in Mexico's Press: Crime, Violence, and Corruption Are Destroying the Country's Journalism [PDF]

open access: yes, 2010
Examines the culture of bribery, extortion, and police complicity; murders and kidnappings of journalists; and the resulting self-censorship.

core  

El recorrido al Cerro Gordo y el ritual tepehuano de las ofrendas en los cerros de la comunidad de San Bernardino de Milpillas

open access: yesFrontera Norte, 2014
El ritual de las ofrendas es una ceremonia propiciatoria de la lluvia que se efectúa al terminar la estación seca en los cerros más altos de la comunidad de San Bernardino de Milpillas Chico, en la Sierra Tepehuana del estado de Durango.
Chantal CRAMAUSSEL
doaj  

Nitrate and nitrite in drinking water affect antioxidant enzymes in erythrocytes of rats [PDF]

open access: yesThe Ukrainian Biochemical Journal, 2018
The present study evaluated the effect of short term intake of nitrite and nitrate drinking water on the antioxidant system and membrane damage of rat erythrocytes. Wistar rats were randomly divided into three groups as follows; the group I received only
E. Sierra-Campos   +7 more
doaj   +1 more source

Crystallographic orientation inhomogeneity and crystal splitting in biogenic calcite [PDF]

open access: yes, 2013
The calcitic prismatic units forming the outer shell of the bivalve Pinctada margaritifera have been analysed using scanning electron microscopy–electron back-scatter diffraction, transmission electron microscopy and atomic force microscopy.
Berent, K.   +9 more
core   +2 more sources

Una especie nueva de Sedum sección Pachysedum (Crassulaceae) y un análisis de la diversidad del género en la Sierra Madre Occidental, México

open access: yesBotan‪ical Sciences, 2022
Antecedentes: La Zona de Transición Mexicana representa un centro de diversificación y área de endemismo para Sedum subgénero Sedum. Las provincias biogeográficas Sierra Madre del Sur, Faja Volcánica Mexicana, Sierra Madre Oriental y Sierra Madre ...
Arturo Castro-Castro   +5 more
doaj   +1 more source

Renewable energy research progress in Mexico: a review [PDF]

open access: yes, 2014
Mexico ranks 9th in the world in crude oil reserves, 4th in natural gas reserves in America and it is also highly rich in renewable energy sources (solar, wind, biomasss, hydropower and geothermal).
Alemán-Nava, GS   +7 more
core   +1 more source

Gobernanza ambiental para el desarrollo sostenible de la cuenca de Santiaguillo, Durango

open access: yesEspiral, 2018
Este artículo presenta los resultados de un proyecto de investigación que tuvo como objetivos generar e implementar una estrategia de gobernanza ambiental para encaminar acciones para el uso sustentable de los recursos hídricos de la cuenca de ...
Erika Cassio Madrazo   +1 more
doaj  

Sunflower Variety Trial [PDF]

open access: yes, 2015
Although sunflowers are a relatively new crop in the Northeast they have potential to add value to diversified operations providing fuel, feed, fertilizer, and an important rotational crop.
Calderwood, Lily   +6 more
core   +1 more source

Impact of educational managers competencies and leadership styles on digital transformation and quality in higher education

open access: yesFrontiers in Education
IntroductionThis study examines the relationship between managerial competencies, leadership styles, and educational quality within the context of digital transformation in higher education.
Adriana Elizabeth Ricartti-Villagrán   +10 more
doaj   +1 more source

Phenolic composition of selected herbal infusions and their anti-inflammatory effect on a colonic model in vitro in HT-29 cells

open access: yesCogent Food & Agriculture, 2015
Some herbal infusions used in folk medicine in Mexico to treat gastrointestinal disorders were evaluated. Antioxidant activity and phenolic compounds were analyzed on the lyophilized aqueous crude extracts (LACE) of arnica (Aster gymnocephalus ...
Elda Herrera-Carrera   +6 more
doaj   +1 more source

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