Mostrando 10 resultados de: 12
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scopus(12)
Black carbon footprint of human presence in Antarctica
ArticleAbstract: Black carbon (BC) from fossil fuel and biomass combustion darkens the snow and makes it melt sooner.Palabras claves:Autores:Alfonso J.A., Asencio V., Carrasco J., Carrera J.M., Casassa G., Cordero R.R., Damiani A., Dana J., Fernandoy F., Feron S., Jose A. Jorquera, Khan A.L., Llanillo P.J., Malhotra A., Neshyba S., Rowe P.M., Seckmeyer G., Sepulveda E., Stepanova M., Wachter P., Wang C.Fuentes:scopusBlack carbon in the Southern Andean snowpack
ArticleAbstract: The Andean snowpack is an important source of water for many communities. As other snow-covered regiPalabras claves:Andes, Black Carbon, SnowAutores:Alfonso J.A., Asencio V., Carrasco J., Carrera J.M., Casassa G., Cordero R.R., Damiani A., Dana J., Fernandoy F., Feron S., Jose A. Jorquera, Khan A.L., Llanillo P.J., MacDonell S., Neshyba S., Rowe P.M., Seckmeyer G., Sepulveda E., Wang C.Fuentes:scopusDistribution and environmental impact of radionuclides in marine sediments along the Venezuelan coast
ArticleAbstract: The activity concentrations of 137Cs, 40K, 226Ra and 232Th in Bq/kg from 42 marine sediment samplesPalabras claves:Marine sediments, Natural radioactivity, radionuclides, Venezuelan coastAutores:Abrahan Mora, Alfonso J.A., Handt H., LaBrecque J.J., Palacios D., Pérez K., Vasquez Y.Fuentes:scopusDistribution of trace elements in offshore sediments of the Orinoco Delta
ArticleAbstract: Surficial sediments from 56 stations on the Orinoco Delta offshore zone were analyzed by x-ray fluorPalabras claves:geochemistry, Heavy Metals, Surface sediments, VENEZUELA, X-ray fluorescenceAutores:Alfonso J.A., Benzo Z., Flores S., Manuel MartínezFuentes:scopusDynamics of dissolved major (Na, K, Ca, Mg, and Si) and trace (Al, Fe, Mn, Zn, Cu, and Cr) elements along the lower Orinoco River
ArticleAbstract: This study addresses the changes in dissolved major and trace element concentrations along the OrinoPalabras claves:major elements, mixing zone, Organic matter, Orinoco River, Trace elementsAutores:Abrahan Mora, Alfonso J.A., Balza L., Baquero J.C., Laraque A., Mahlknecht J., Pisapia D.Fuentes:scopusGeochemistry of recent lacustrine sediments from Fildes Peninsula, King George Island, maritime Antarctica
ArticleAbstract: Comprehensive geochemical analyses (bulk parameters, major and trace elements, organic matter, minerPalabras claves:Chemical weathering, comprehensive geochemical characterization, lake sediments, South Shetlands IslandsAutores:Abrahan Mora, Alfonso J.A., Handt H., Hernández A.C., Sira E., Vasquez Y.Fuentes:scopusElemental and Mineralogical Composition of the Western Andean Snow (18°S–41°S)
ArticleAbstract: The snowpack is an important source of water for many Andean communities. Because of its importance,Palabras claves:Autores:Alfonso J.A., Carrasco J., Carrera J.M., Casassa G., Cordero R.R., Damiani A., Fernandoy F., Feron S., Garcia B., Jose A. Jorquera, Kang C.M., Lambert F., Llanillo P.J., MacDonell S., Neshyba S., Oyola P., Pizarro J., Rowe P.M., Sepulveda E.Fuentes:scopusImpact of the red mud disposal on several floodplain lagoons of the lower Orinoco River
ArticleAbstract: This paper identifies the effects of red mud spills on several lagoons of the Orinoco River locatedPalabras claves:Floodplain, Orinoco River, Red mud, Sediments, WATERAutores:Abrahan Mora, Alfonso J.A., González N., Handt H., Márquez L., Moreau C., Pisapia D., Vasquez Y.Fuentes:scopusMajor elements, minority and sediment trace in environmental samples and on river Orinoco, Venezuela
ArticleAbstract: The concentrations of major (Fe and Al), minor (Na, K, Ca, Mg, Mn and Zn) and trace (Cr, Cu, Pb andPalabras claves:geochemistry, Orinoco, Pollution, SedimentsAutores:Abrahan Mora, Alfonso J.A., Baquero J.C., Handt H., Vasquez Y.Fuentes:scopusTemporal variability of selected dissolved elements in the lower Orinoco River, Venezuela
ArticleAbstract: Monthly analyses of pH, conductance, alkalinity, total suspended solids, dissolved major cations (NaPalabras claves:Major cations, Orinoco, Trace elements, VENEZUELAAutores:Abrahan Mora, Alfonso J.A., Azócar J.A., Calzadilla M., LaBrecque J.J., Sánchez L., Silva S.Fuentes:scopus