Resultados de búsqueda - "coal"

Seroprevalence of T. Cruzi infection in blood donors and chagas cardiomyopathy in patients from the coal mining region of coahuila, Mexico por Martínez Tovar, José Gerardo, Rebollar Téllez, Eduardo Alfonso, Fernández Salas, Ildefonso

“…The objective of this study was to determine the seroprevalence of T. cruzi infection in blood donors and Chagas cardiomyopathy in patients from the coal mining region of Coahuila, Mexico. Design and Setting: Epidemiological, exploratory and prospective study in a general hospital during the period January to June 2011. …”
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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. …”
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Cation Xanthated Exchangers from Colombian Sub Bituminous Coals Effectively Removed Cadmium and Lead fromAqueous 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 metallurgical aims, which are activities that produce contamination. …”
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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

Materias: “…subbituminous coal…”
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Estudio de las relaciones de compatibilidad en estado sólido del diagrama de equilibrio de fases CaO-Al2O3-CoO por Torres Martínez, Leticia Myriam, Vázquez Méndez, Bertha Alicia, Zarazúa Morín, María Elvira

“…Se delimitaron tres pequeñas regiones de soluciones sólidas alrededor de CaO, CoO y CoAl2O4. Se observó también la formación de fases con diversos colores en función de la zona del diagrama. …”
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Effect of milling time on mechanical properties of fly ash incorporated cement mortars por Zaldívar Cadena, Antonio Alberto, Díaz Peña, Ismael, González López, Javier Rodrigo, Vázquez Acosta, Francisco, Cruz López, Arquímedes, Vázquez Cuchillo, Odilón, Vázquez Rodríguez, Francisco Javier, Serrato Arias, Lucero Marisol

“…Currently, thermal energy generation through coal combustion produces ash particles which cause serious environmental problems and which are known as Fly Ash (FA). …”
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Deficiencia del control estatal sobre la utilización de regalías e implicaciones directas de la explotación sobre las poblaciones vecinas: Caso Uribia, La Guajira. Deficiency of... por Lechuga Cardozo, Jorge Isaac, Cruz Páez, Fabio Orlando, Cazallo Antúnez, Ana María

“…After analyzing the data it was found that the municipality of Uribia and the department of La Guajira and the social indicators reflect a dramatic situation that reflects the poverty levels in this population are contradictorily rich territories in mineral resources and in which it is carried out the largest open-pit coal in South America. It is concluded that problems such as corruption afflict the efficient distribution of wealth generated by one of the largest multinationals in our territory El Cerrejón. …”
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Casos de dumping en energía renovable: Competencia desleal o el desconocimiento a los acuerdos internacionales en materia de cambio climático por Velásquez Martínez, Daniel, Badii, Mohammad H.

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Growth and yield of an eucalyptus subtropical plantation in a Northeastern Mexico degraded land soil por Foroughbakhch Pournavab, Rahim, Carrillo Parra, Artemio, Hernández Piñero, Jorge Luis, Guzmán Lucio, Marco Antonio

“…Abstract Over the past three decades, woody species potentially useful for reforestation, fuelwood, coal and timber production have been over-exploited along the Gulf of Mexico, which has led to a gradual decline in the plant population and the progressive degradation of the environment. …”
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Aislamiento y selección de cepas mutantes de Hirsutella citriformis inducidas por el agente químico: metanosulfonato de etilo (EMS). por Cruz Juárez, Georgina

“…On the other hand, 6 liquid media with different concentrations of coal and different proportions of Coal-Nitrogen were evaluated using low-cost nitrogen sources to obtain a high biomass production and to formulate dry formulations using different clays as support. …”
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Aislamiento y selección de cepas mutantes de Hirsutella citriformis inducidas por el agente químico: metanosulfonato de etilo (EMS). por Cruz Juárez, Georgina

“…On the other hand, 6 liquid media with different concentrations of coal and different proportions of Coal-Nitrogen were evaluated using low-cost nitrogen sources to obtain a high biomass production and to formulate dry formulations using different clays as support. …”
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