División de Geociencias Aplicadas: Envíos recientes
Mostrando ítems 201-220 de 251
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Surface and physicochemical characterization of phosphates vivianite, Fe2(PO4)3 and hydroxyapatite, Ca5(PO4)3OH
(2009-08)"Hydroxyapatite is a calcium phosphate in the apatite group. It has numerous applications due to its particular properties including the sorption of metallic ions. This makes it useful for the treatment of contaminated ... -
The VISHMOD methodology with hydrochemical modeling in intermountain (karstic) aquifers: case of the Sierra Madre Oriental, Mexico
(2014)"Hydrogeochemistry can be studied qualitatively using graphics such as scatter plots and Piper, Durov, and Schoeller diagrams, among others, and quantitatively by applying mass balance mixing models. The VISHMOD methodology ... -
Modeling of groundwater flow and water use for San Luis Potosí Valley aquifer system
(2014)"Land use changes are currently one of the indisputable factors in the alteration of processes and cycles of the aquifer system in the San Luis Potosí Valley. Due to its importance, is considered indispensable to investigate ... -
Phylogenetic diversity of methyl-coenzyme M reductase (mcrA) gene and methanogenesis from trimethylamine in hypersaline environments
(2012)"Methanogens have been reported in complex microbial communities from hypersaline environments, but little is known about their phylogenetic diversity. In this work, methane concentrations in environmental gas samples were ... -
Transparency of cosmic radio waves caused by seismic and volcano activities
(2014-09)"The generation of different waves in the atmosphere and ionosphere caused by seismic and volcano activities has changed the transparency for cosmic radio waves. It is possible to analyze two cases: the first case caused ... -
Southward migration of magmatic activity in the Colima volcanic complex, Mexico: an ongoing process
(2015)"The Colima Volcanic Complex trends in a nearly N-S direction in western Mexico, and one of its structures, Colima volcano, is the most historically active volcano in the country. Immediately to the N, there is another ... -
Groundwater flow processes and mixing in active volcanic systems: the case of Guadalajara (Mexico)
(2015)"Groundwater chemistry and isotopic data from 40 production wells in the Atemajac and Toluquilla valleys, located in and around the Guadalajara metropolitan area, were determined to develop a conceptual model of groundwater ... -
Estimation of total yearly CO2 emissions by wildfires in Mexico during the period 1999–2010
(Hindawi, 2014)"The phenomenon of wildfires became a global environmental problem which demands estimations of their CO2 emissions. Wildfires have deteriorated the air quality increasingly. Using available information on documented ... -
Paleomagnetic pole positions and geomagnetic secular variation from the Cretaceous Ponta Grossa dike swarm (Brazil)
(2015)"A detailed paleomagnetic and rock magnetic investigation has been carried out on the Early Cretaceous Ponta Grossa dike swarm in southern Brazil. This formation seems an excellent target for paleomagnetic study. The dikes ... -
Is there a grenvillian basement in the Guerrero-Morelos platform of Mexico?
(2007)"In the Guerrero-Morelos platform (Guerrero State, Mexico) the adakitic rocks of Early Tertiary age contain abundant hornblende-rich tonalite xenoliths. Zircon crystals have been concentrated from both adakites and xenoliths, ... -
A new theory on tidal currents rotation
(2007-01)"Applying the linearized equations of motion, projection on the complex plane and a representation of the velocity vector and the forcing sea surface elevation gradient in function of the eigenvectors of the homogeneous ... -
Bottom topography, recent sedimentation and water volume of the Cerro Prieto Dam, NE Mexico
(2014)"The Cerro Prieto dam, a relatively small water reservoir in NE Mexico, is one of the main resources of potable water for Monterrey, a city with a population of about four million inhabitants. A high resolution seismic ... -
2 ¾ dimension modeling of the aeromagnetic anomaly of Volcán de Colima, western Mexico
(2012)"Se presentan los resultados de un modelo 2 ¾ D de la anomalía aeromagnética del Volcán de Colima ubicado en la porción sur del Complejo Volcánico de Colima. El modelo estructural documenta la presencia de una cámara ... -
Identification of diagenetic calcium arsenates using synchrotron-based micro X-ray diffraction
(2015)"In this work, we identify the type of calcium arsenates found in sediment samples from an aquifer located in Matehuala, San Luis Potosí, México. Sediments in contact with levels up to 158 mg/L of arsenic in neutral pH ... -
A review of iron oxide transformations, rock magnetism and interpretation of magnetic anomalies: el Morro Mine (Brazil), a case study
(2011)"Se presenta una revisión de la mineralogía de los óxidos de hierro y su relación con las propiedades magnéticas. Se discuten los procesos magnéticos y modelos de una gran área alrededor de la mina El Morro, Brasil en el ... -
Lithostratigraphic analysis and geochemistry of a vitric spatter-bearing ignimbrite: the Quaternary Adeje Formation, Cañadas volcano, Tenerife
(2013-06)"The 1.5-Ma Adeje Formation in SW Tenerife contains an ignimbrite sheet with remarkable textural and chemical complexity. A basal Plinian pumice-fall layer is overlain by a partly welded compound ignimbrite in which ... -
Caracterización hidrogeoquímica y vulnerabilidad del acuífero Huichapan-Tecozautla, Estado de Hidalgo
(2017-01)"El acuífero Huichapan Tecozautla se encuentra ubicado en los municipios del mismo nombre en el Estado de Hidalgo. La problemática que se tiene es el abastecimiento de agua, debido a que se ha acentuado la escasez en las ... -
Índice de pobreza del agua en los acuíferos de Cerritos-Vila Juárez y Rioverde de la zona media de San Luis Potosí
(2017-01)"En la actualidad la deficiente gestión de los recursos hídricos, el crecimiento de la población y una falta cultura en aprovechamiento de los recursos naturales, ha incrementado la sobreexplotación de los acuíferos en ... -
Identificación de procesos hidrogeoquímicos aplicando modelación inversa en el acuífero Soconusco, Chiapas
(2017-02)"La región del Soconusco en Chiapas, México, posee como actividad económica primordial del sector agrícola, se abastece de agua de pozos y norias. El presente trabajo consistió en realizar caracterización hidrogeoquímica ... -
Estudio regional del campo volcánico de la cuenca Serdán - Oriental a través de métodos potenciales
(2017-12)"La cuenca Serdán – Orietal, Puebla se encuentra en la porción oriental de la Faja Volcánica Trans – Mexicana (FVTM), el vulcanismo es variado y de carácter bimodal, se ha estudiado por su potencial geotérmico e interés ...