Search Results - "Bernal, J.P."

In-situ 230Th/U dating of Quaternary zircons using LA-MCICPMS by Bernal, J.P., Solari, L.A., Gómez-Tuena, A., Ortega-Obregón, C., Mori, L., Vega-González, M., Espinosa-Arbeláez, D.G.

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Climatic fluctuations as a significant contributing factor for volcanic collapses. Evidence from Mexico during the Late Pleistocene by Capra, L., Bernal, J.P., Carrasco-Núñez, G., Roverato, M.

“…Climate oscillations have significantly contributed to the planet's evolution, including volcanic activity. Major glaciations have been considered not only as…”
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Timing of speleogenesis of Las Karmidas Cave (Mexico): first description of pseudokarst developed in ignimbrite by Aliaga-Campuzano, María del Pilar, López-Martínez, Rafael, Dávila-Harris, Pablo, Espinasa-Pereña, Ramón, Espino del Castillo, Adriana, Bernal, J.P.

“…Las Karmidas Cave (Puebla State, Mexico) is an unusual type of pseudokarstic cavity generated by piping and erosive processes within the contact of a diamicton…”
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High-resolution Holocene South American monsoon history recorded by a speleothem from Botuverá Cave, Brazil by Bernal, J.P., Cruz, Francisco W., Stríkis, Nicolás M., Wang, Xianfeng, Deininger, Michael, Catunda, Maria Carolina A., Ortega-Obregón, C., Cheng, Hai, Edwards, R. Lawrence, Auler, Augusto S.

“…•A high-resolution Holocene record of hydroclimate variability from SE Brazil.•Correlation between Sr/Ca and δ18O ties atmospheric circulation and monsoon…”
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The evolution of the Maya coastal landscape in the Mexican Caribbean during the last 6200 years by Correa-Metrio, A., Cordero-Oviedo, C., Gámez-Núñez, E., Olivares-Casillas, G., Escobar, J., Curtis, J.H., Pérez, L., Blaauw, M., Bernal, J.P.

“…The modern configuration of tropical coastlines is a result of changes in sea level and regional hydroclimates during the Holocene. In some regions, such as…”
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U–Pb zircon geochronology by LAICPMS combined with thermal annealing: Achievements in precision and accuracy on dating standard and unknown samples by Solari, L.A., Ortega-Obregón, C., Bernal, J.P.

“…U–Pb zircon dating by LAICPMS is one of the most popular geochronological techniques, however it still suffers from some accuracy and precision problems. These…”
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Rare Earth Elements and Yttrium (REE+Y) patterns in recent Anadara brasiliana shells from Playa Norte, Barra de Cazones (Veracruz, Mexico): Evidence of anthropogenic contamination linked to river output? by Valdés-Vilchis, Samantha, Sánchez-Beristain, Francisco, Bernal, J.P., Juárez-Aguilar, E. Aldrin

“…We measured and interpreted Rare Earth Element and Yttrium concentrations of ten recent Anadara brasiliana (Lamarck) shells from Playa Norte (Barra de Cazones,…”
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Determination of the temperature of precipitation of aragonite in shells of Anadara brasiliana (Lamarck, 1819) from Playa Norte, Cazones de Herrera (Holocene, Veracruz, Mexico) by means of trace element analysis by Juárez-Aguilar, E. Aldrin, Sánchez-Beristain, Francisco, Bernal, J.P.

“…In this work, data on the precipitation temperatures of aragonite were evaluated from the analysis of three shells of the bivalve species Anadara brasiliana…”
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Using trace element content and lead isotopic composition to assess sources of PM in Tijuana, Mexico by Salcedo, D., Castro, T., Bernal, J.P., Almanza-Veloz, V., Zavala, M., González-Castillo, E., Saavedra, M.I., Perez-Arvízu, O., Díaz-Trujillo, G.C., Molina, L.T.

“…PM2.5 samples were collected at two urban sites (Parque Morelos (PQM) and CECyTE (CEC)) in Tijuana during the Cal-Mex campaign from May 24 to June 5, 2010…”
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In-situ230Th/U dating of Quaternary zircons using LA-MCICPMS by Bernal, J.P., Solari, L.A., Gómez-Tuena, A., Ortega-Obregón, C., Mori, L., Vega-González, M., Espinosa-Arbeláez, D.G.

“…Zircon is the most widely used mineral for geochronology purposes, as parts of it can behave as a closed system for billions of years and resist most…”
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Dating of chemical weathering processes by in situ measurement of U-series disequilibria in supergene Fe-oxy/hydroxides using LA-MC-ICPMS by Bernal, J.P., Eggins, S.M., McCulloch, M.T., Grün, R., Eggleton, R.A.

“…Constraints on the timing of weathering processes in the northern Australian regolith have been obtained by in situ measurement of U-series disequilibria in…”
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Rare earth elements in corals from the Isla de Sacrificios Reef, Veracruz, Mexico by Kasper-Zubillaga, J.J., Rosales-Hoz, L., Bernal, J.P.

“…Rare earth elements (REE) analysis was carried out in two coral species Diploria strigosa and Copophyllia natans from Isla de Sacrificios Reef (ISR) (19° 10′…”
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U-series dating of carbonates using inductively coupled plasma-quadrupole mass spectrometry by Hernández-Mendiola, E., Bernal, J.P., Lounejeva, E., Mortimer, G.E., McCulloch, M.T.

“…We describe an analytical methodology to quantify 238U– 234U and 230Th using isotope-dilution systematics and inductively coupled plasma-quadrupole mass…”
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An early Holocene stalagmite record of dust and humidity from southwestern Mexico by Bernal, J.P., McCulloch, M.T., Lachniet, M.S.

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Improved precision in isotope and element ratio measurements by quadrupole-based ICP-MS by Mora-Palomino, L., Solari, L.A., Lounejeva-Baturina, E., Bernal, J.P.

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Feasibility study and implementation by means of a pilot plan of a system of transmission of medical images for the diagnosis of patients between general doctors and medical specialists by Bernal, J.P., Espitia, K.L.

“…Today some clinics and hospitals in the country are looking for cost reduction and optimization of resources in response to new trends in administration, for…”
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Extraction of Cu(II), Fe(III), Ga(III), Ni(II), In(III), Co(II), Zn(II) and Pb(II) with LIX ® 984 dissolved in n-heptane by de San Miguel, E.Rodríguez, Aguilar, J.C., Bernal, J.P., Ballinas, M.L., Rodríguez, M.T.J., de Gyves, J., Chimmel, K.

“…The solvent extraction of some metal ions with LIX ® 984 dissolved in n-heptane was studied. The extraction order observed as the pH of the aqueous solution…”
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