Results 31 to 40 of about 37,423 (154)

Hematite vs. Clays: their potential as red pigments and their use in three sites at the Puna of Jujuy (Argentina) [PDF]

, 2013
El análisis de pinturas rojas en pictografías de tres sitios de la Puna jujeña puso de manifiesto el uso exclusivo de hematita en su realización. Este pigmento rojo fue utilizado en la región desde inicios de la ocupación humana y su reiterada presencia ...
Alonso, Maria Susana, Cata, Maria Paz, Maier, Marta Silvia, Rosenbusch, Mariana Lidia, Sola, Patricia, Vázquez, Cristina, Yacobaccio, Hugo Daniel   +6 more
core   +1 more source

Climatic and Edaphic Drivers of Soil Organic Carbon and Pyrogenic Carbon Stocks Across Elevation and Disturbance Gradients in Colombian Andean Forests

Global Change Biology, Volume 31, Issue 7, July 2025.
This study examined soil organic carbon (SOC) and pyrogenic carbon (PyC) stocks in tropical Andean soils across elevation and disturbance gradients in Colombia. SOC stocks to 100 cm depth averaged 433.10 Mg C ha−1 while PyC was 34.13 Mg C ha−1. Key drivers of PyC stocks include soil clay (%), mean annual precipitation (PA), pH, Ca, and NDVI, which ...
Carmen R. Montes‐Pulido, Michael I. Bird, Lidiany C. da Silva Carvalho, Julieth Serrano, Carlos A. Quesada, Ted R. Feldpausch   +5 more
wiley   +1 more source

Clay surface characteristics using atomic force microscopy

Revista Facultad de Ingeniería Universidad de Antioquia, 2018
El primer componente para la fabricación de productos de mampostería para la construcción es la arcilla, la cual aporta la plasticidad que facilita el moldeo y el manejo del producto. El segundo componente es el feldespato en su formación como alúmina (
Ricardo Andrés García-León, Eder Norberto Flórez-Solano, Carlos Humberto Acevedo-Peñaloza   +2 more
doaj   +1 more source

Mediterranean Cyclones in a Changing Climate: A Review on Their Socio‐Economic Impacts

Reviews of Geophysics, Volume 63, Issue 2, June 2025.
Abstract The Mediterranean Basin, renowned for its cultural, ecological, and climatic significance, frequently endures high‐impact weather events driven by Mediterranean cyclones (Medcyclones), atmospheric low‐pressure systems characterized by counterclockwise wind circulation. These meteorological phenomena, sometimes comparable to hurricanes in their
Samira Khodayar, Jonilda Kushta, Jennifer L. Catto, Stavros Dafis, Silvio Davolio, Christian Ferrarin, Emmanouil Flaounas, Pieter Groenemeijer, Maria Hatzaki, Assaf Hochman, Vassiliki Kotroni, Jaromir Landa, Ilona Láng‐Ritter, Georgia Lazoglou, Margarida L. R. Liberato, Mario Marcello Miglietta, Katerina Papagiannaki, Platon Patlakas, Robert Stojanov, George Zittis   +19 more
wiley   +1 more source

Pore water chemistry of a Paleogene continental mudrock in Spain and a Jurassic marine mudrock in Switzerland: Sampling methods and geochemical interpretation [PDF]

, 2006
Este trabajo resume una serie de metodologías y aproximaciones desarrolladas en CIEMAT durante los últimos 10 años con el objetivo de obtener información del agua intersticial de dos formaciones arcillosas: la Opalinus Clay procedente de Suiza y una ...
Bossart, P., Fernández, A.M., Garralón, A., Gómez, P., Hernán, P., Melón, A., Peña, J., Sánchez, M., Sánchez, M.D., Turrero, M.J., Wersin, P., Yllera, A.   +11 more
core   +1 more source

Synthesis of a National Soil Dataset Across Productive Land in Mexico: The Importance of Making Existing Data Accessible

European Journal of Soil Science, Volume 76, Issue 3, May–June 2025.
ABSTRACT The lack of soil data is a complication that most soil scientists will encounter throughout their career; this critical aspect is exacerbated due to the excessive cost of soil surveying. Consequently, it is essential to develop strategies that guarantee the permanent accessibility of past soil sampling efforts.
Carlos E. Arroyo‐Cruz, Blanca Prado, Melanie Kolb, Lucy Natividad Mora‐Palomino, Katherine Todd‐Brown, Mario Guevara   +5 more
wiley   +1 more source

Variación de la energía libre de Gibbs de la caolinita en función de la cristalinidad y tamaño de partícula

Estudios Geologicos, 1989
Se estudia el efecto de la molienda prolongada sobre la cristalinidad, tamaño de partícula y solubilidad de dos muestras de caolinita. Se ha calculado la energía libre estandar de formación del mineral a partir de medidas de solubilidad, encontrando una ...
A. La Iglesia
doaj   +1 more source

Potentiality of new dark clay-rich materials for porous ceramic applications in Ouled Sidi Ali Ben Youssef Area (Coastal Meseta, Morocco)

Boletín de la Sociedad Española de Cerámica y Vidrio, 2022
Potential use of raw clayey deposits from El Jadida, Morocco, in the manufacture of traditional ceramic products has been evaluated through a careful sampling and an in-depth characterization of the outcropping features around Ouled Sidi Ali Ben Youssef ...
Achraf Harrati, Ahmed Manni, Fahd Oudrhiri Hassani, Ali Sdiri, Souad El Kalakhi, Abdeslam El Bouari, Iz-Eddine El Amrani El Hassani, Chaouki Sadik   +7 more
doaj   +1 more source

Living in Mediterranean cities in the context of climate change: A review

International Journal of Climatology, Volume 44, Issue 10, Page 3169-3190, August 2024.
The high vulnerability of people in Mediterranean cities to climate change stresses the need to deepen the knowledge of observed trends and future projections, up to the urban microclimatic level, together with the need for developing approaches to adapt to the aggravating conditions and increase in extreme events.
Panagiotis Nastos, Hadas Saaroni
wiley   +1 more source

Mineralogía de las arcillas en suelos y alteraciones sobre materiales graníticos de Galicia [PDF]

, 1982
[Resumen] Se realiza un estudio de la naturaleza de la fracción arcilla en suelos y capas de alteración de.rocas graníticas de Galicia (58 perfiles) encontrando un predominio de minerales propios de "sistemas abiertos" como filosilicatos 1:1 y gibbsita ...
García Paz, C., García-Rodeja Gayoso, E., Macías Vázquez, F.   +2 more
core   +1 more source