Results 71 to 80 of about 4,580 (237)

Passive fillers for water activity measurement [PDF]

, 2013
The paper is dedicated to passive fillers, which are the necessary substances for a method of water activity determination in liquid samples by mirror dew-point temperature measurement.
Nenartovich, I. V., Podorozhnyaya, I. V., Vetokhin, S. S.   +2 more
core  

Mineral Weathering Experiments for Terrestrial Planetary Analogs in a Continuous‐Flow Reactor

Geofluids, Volume 2026, Issue 1, 2026.
Understanding the groundwater environments for ancient Mars and other terrestrial bodies is of great interest for evaluating their habitability. Here, we experimentally tested simulated aqueous alterations of two Mars simulants (variants of MGS‐1) using a continuous‐flow packed bed reactor, reacting with three ionic simulated groundwater analog ...
Jessica M. Weber, Eduardo Martinez, Rachel Y. Sheppard, Laura E. Rodriguez, Aaron Celestian, Bronwyn L. Teece, Laura M. Barge, Pramita Mishra   +7 more
wiley   +1 more source

CHARACTERIZATION OF CLAYS USED FOR MEDICINAL PURPOSES IN THE ARCHIPELAGO OF CAPE VERDE [PDF]

, 2009
Amostras de duas argilas comercializadas para fins medicinais (alívio de afecções do foro gastrointestinal, tratamento de abcessos, furúnculos e feridas, assim como para afecções da pele e aplicações cosméticas), e vendidas numa loja de produtos naturais
Gomes, Celso, Hernandez, Regla, Sequeira, Cristina   +2 more
core  

Quasielastic Neutron Scattering Reveals Anisotropic Water Transport in Smectite Thin Film

Advanced Materials Interfaces, Volume 12, Issue 24, December 22, 2025.
Clay minerals, vital in advanced technologies, exhibit tunable interfacial properties. Quasielastic neutron scattering is used on oriented beidellite films to study charge‐induced anisotropy. Results reveal anisotropic water dynamics and orientation‐dependent diffusion.
Yiran Jin, Kristoffer Vorm, Will P. Gates, Félix J. Villacorta, Hery Mitsutake, Seiko Ohira‐Kawamura, Takeshi Yamada, Yukinobu Kawakita, Charalampos Tsekeridis, José E. M. Pereira, Masatoshi Arai, Heloisa N. Bordallo   +11 more
wiley   +1 more source

Role of fluorine in the transfer of Be and the formation of beryl deposits: a thermodynamic model. [PDF]

, 2005
After a thorough study on the tracing of the emerald origin by oxygen data by Zwaan et al. [12], the paper by Moine et al. [4] entitled ‘The role of fluorine in the formation of the Mananjary emerald deposits (eastern Madagascar)' demonstrates through a ...
Ramboz, Claire
core   +4 more sources

Elevated temperature effects on swelling pressure of compacted bentonite

Deep Underground Science and Engineering, Volume 4, Issue 4, Page 699-708, December 2025.
We present a set of new experimental investigations on the effects of elevated temperature on the swelling pressure development of compacted bentonite. This research was motivated by an emerging interest in using bentonite as a plug material in oil and gas well abandonment.
Linhua He, Majid Sedighi, Mojgan Hadi Mosleh, Andrey Jivkov, Jiangfeng Liu   +4 more
wiley   +1 more source

Graphene adhesion on mica: Role of surface morphology [PDF]

, 2011
We investigate theoretically the adhesion and electronic properties of graphene on a muscovite mica surface using the density functional theory (DFT) with van der Waals (vdW) interactions taken into account (the vdW-DF approach).
Katsnelson, M. I., Keil, F. J., Lichtenstein, A. I., Rudenko, A. N.   +3 more
core   +3 more sources

Palagonitization of Volcanic Rocks in Polar Climates: The Case of Deception Island (Antarctica)

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract A detailed study of palagonitization in rocks from Deception Island—one of Antarctica's most active volcanoes—has been performed to advance our understanding of this alteration process. A detailed petrographic (optical and SEM), mineralogical (XRD), and mineral and glass spot geochemistry (EDS and EMP) characterization has been conducted on ...
Oriol Vilanova‐Pagès, Guillem Gisbert, Helena Albert, Adelina Geyer, Meritxell Aulinas, Raquel Arasanz, Jordi Ibañez‐Insa, Antonio Polo‐Sánchez, Antonio Álvarez‐Valero, Olga Prieto‐Ballesteros, Santiago Giralt   +10 more
wiley   +1 more source

Origin of clay minerals in Early Eocene volcanic paleosols on King George Island, Maritime Antarctica

Scientific Reports, 2017
The paleoclimate during the Early Eocene in Maritime Antarctica is characterized by cool conditions without a pronounced dry season. Soils formed on volcanic material under such climate conditions in modern analogue environments are usually Andosols rich
Diogo Noses Spinola, Teresa Pi-Puig, Elizabeth Solleiro-Rebolledo, Markus Egli, Masafumi Sudo, Sergey Sedov, Peter Kühn   +6 more
doaj   +1 more source

Thermal Reactions of Smectite Minerals at Earthquake Timescales

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract Frictional heating causes a transient temperature rise in fault zones during earthquakes that leads to metamorphic reactions within the fault rocks. The products of these reactions provide potential evidence of earthquakes in both the outcrop and drill core. Clay minerals such as smectites are commonly found in faults.
Julia E. Krogh, Heather M. Savage, Randolph T. Williams, Pratigya J. Polissar, Christie D. Rowe   +4 more
wiley   +1 more source