Results 51 to 60 of about 596 (160)

Results of geological and geophysical research on the Subotska structure of Ingulskiy megablock of the Ukrainian shield

Мінеральні ресурси України, 2020
The article presents the results of diamond prospecting studies in the Subotska structure of the Inhulskyi megablock of Ukrainian Shield. For the results, it is indicated that the Subotska structure is mimicked by crater rocks and in some cases by ...
G. A. Kalashnyk
doaj   +1 more source

Abrasion Patch Dehydration Experiment at Bright Angel, Jezero Crater, Using SuperCam Onboard the Mars 2020 Perseverance Rover

Journal of Geophysical Research: Planets, Volume 130, Issue 12, December 2025.
Abstract Investigating the stability of hydrated minerals is integral for examining the preservation of rocks for potential Mars Sample Return and has major implications for models that use rover‐based observations to quantify Mars' global water budget.
S. A. Connell, R. C. Wiens, L. Mandon, C. C. Bedford, S. Siljeström, S. Schröder, G. M. Martínez, Á. Vicente‐Retortillo, E. A. Cloutis, D. M. Applin, A. Broz, C. Royer, J. R. Johnson, J. Van Beek, T. Nelson, E. Clavé, F. Poulet, P. Beck, E. Dehouck, T. Fornaro, T. Fouchet, A. Jones, A. Alberini, A. Cousin, K. Hand, K. Uckert, J. A. Rodríguez‐Manfredi, K. M. Stack, the Mars 2020 team   +28 more
wiley   +1 more source

The effect of temperature and humidity treatment on the strength set of fine-grained concrete with the addition of saponite-containing material [PDF]

Нанотехнологии в строительстве
Introduction. To restore and develop the Solovetsky Islands road network concrete slabs could be used. Currently, compositions with additives of industrial waste, including micro- and nanoscale, are being actively introduced to improve the performance ...
Marina V. Morozova
doaj   +1 more source

Phyllosilicate Infrared Spectral Features as Tracers of Aqueous Alteration in CM Chondrites and Implications for Remote Sensing of Hydrated Asteroids

Journal of Geophysical Research: Planets, Volume 130, Issue 12, December 2025.
Abstract CM (Mighei‐type) carbonaceous chondrites host abundant OH/H2O‐bearing phyllosilicates formed from water‐rock reactions in primitive planetesimals. Their infrared (IR) spectral features resemble those of C‐type asteroids, making laboratory analyses of CMs essential for interpreting asteroid observations.
W. M. Lawrence, B. L. Ehlmann
wiley   +1 more source

Sulfur‐bearing serpentine in carbonaceous chondrites

Meteoritics &Planetary Science, Volume 60, Issue 12, Page 2864-2890, December 2025.
Abstract A correlative multi‐technique approach, including electron microscopy and X‐ray synchrotron work, has been used to obtain both structural and compositional information of a sulfur‐bearing serpentine identified in several carbonaceous chondrites (Winchcombe CM2, Aguas Zarcas CM2, Ivuna CI, and Orgueil CI), and in Ryugu samples returned by the ...
N. Topping, J. C. Bridges, L. J. Hicks, L. Petera, C. S. Allen, J. Ryu, D. G. Hopkinson, M. Danaie, L. Blase, F. M. Willcocks, G. Douglas, H. G. Changela, T. Noguchi, T. Matsumoto, A. Miyake   +14 more
wiley   +1 more source

ZnO-Porous Clay Heterostructure from Saponite as Green Catalyst for Citronellal Cyclization

Bulletin of Chemical Reaction Engineering & Catalysis, 2020
Green conversion in organic synthesis is one of the interesting and important topics in green chemistry. The use of heterogeneous catalysis instead of homogeneous catalysis offers some advantages, such as easy separation and reusability. In this research,
Dwiarso Rubiyanto, Nurcahyo Iman Prakoso, Imam Sahroni, Rico Nurillahi, Is Fatimah   +4 more
doaj   +1 more source

Excitation Energy Transfer between Porphyrin Dyes on a Clay Surface: A Study Employing Multifidelity Machine Learning

Advanced Theory and Simulations, Volume 8, Issue 11, November 2025.
Inspired by natural light‐harvesting systems, this study computationally investigates a synthetic antenna by arranging cationic free‐base porphyrin molecules on an anionic clay surface. Using a multiscale quantum mechanics/molecular mechanics (QM/MM) approach combined with a multifidelity machine learning method, excitation energies are predicted ...
Dongyu Lyu, Vivin Vinod, Matthias Holzenkamp, Yannick Marcel Holtkamp, Sayan Maity, Carlos R. Salazar, Ulrich Kleinekathöfer, Peter Zaspel   +7 more
wiley   +1 more source

3D SR‐μXCT analysis for lithology detection: Application to Ryugu sample A0159

Meteoritics &Planetary Science, Volume 60, Issue 11, Page 2623-2654, November 2025.
Abstract Extraterrestrial breccia samples are formed through impact‐related processes that combine the fragments of distinct lithologies. As such, they are valuable indicators of the complex formation and evolution history of planetesimals in our solar system.
Léna Jossé, Zélia Dionnet, Alice Aléon‐Toppani, Rosario Brunetto, Andrew King, Emmanuel Gardés, Eva Heripré, Damien Loizeau, Sasha Cryan, Kentaro Hatakeda   +9 more
wiley   +1 more source

Nanostructured Clays Used as Carriers for Controlled Delivery of Antibacterial Compounds From Direct Restorative Dental Materials: A Scoping Review

Clinical and Experimental Dental Research, Volume 11, Issue 5, October 2025.
ABSTRACT Objective Through a scoping review, this study meticulously mapped and characterized these nanostructured clays used to release antibacterial active compounds from direct restorative dental materials. Material and Methods The systematic approach involved searches in the PubMed/MEDLINE, Lilacs, Web of Science, Scopus, ScienceDirect, and Embase ...
Bárbara Faria Sa de Barbosa, José Leôncio Ferreira Neto, Francisca Jennifer Duarte de Oliveira, Juliana Sales Osterno Leitão, Moan Jéfter Fernandes Costa, Pedro Henrique Sette‐de‐Souza, Pierre Basílio Almeida Fechine, Victor Pinheiro Feitosa, Boniek Castillo Dutra Borges   +8 more
wiley   +1 more source

Saponite-anthocyanin pigments: Slipping between the sheets

Microporous and Mesoporous Materials, 2020
Abstract The present work describes the synthesis and characterization of hybrid materials based on β-cyclodextrin (β-CD) and cetyltrimethylammonium bromide (CTAB) intercalated into saponite (SAP) and a commercially available powder of anthocyanin dye, Crystal Red Grape (RG).
Brandão Lima, Luciano Clécio, Castro-Silva, Fabrícia, Silva-Filho, Edson Cavalcanti, Fonseca, Maria Gardennia, Jaber, Maguy   +4 more
openaire   +3 more sources