Results 71 to 80 of about 3,477 (195)

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

Gênese de solos derivados de rochas ultramáficas serpentinizadas no sudoeste de Minas Gerais Genesis of soils formed from ultramafic serpentinized rocks in southwestern Minas Gerais (Brazil)

Revista Brasileira de Ciência do Solo, 2006
Os solos derivados de rochas serpentinizadas ou serpentinitos constituem um grupo especial de solos em toda superfície terrestre. De caráter ultramáfico, ou seja, rochas com mais de 70 % de minerais máficos (ferromagnesianos), os serpentinitos apresentam
Pablo Vidal-Torrado, Felipe Macias, Rosa Calvo, Sebastião Gomes de Carvalho, Alexandre Christófaro Silva   +4 more
doaj   +1 more source

Influence of pH and temperature on the early stage of mica alteration [PDF]

, 2012
International ...
CENSI, Paolo, Pachana, K, Zuddas, P
core   +3 more sources

Interstratified Illite‐Hydroxy‐Interlayered Smectite—A Disorder Structure Model for Quantification Using Rietveld Refinement

Journal of Plant Nutrition and Soil Science, Volume 188, Issue 5, Page 801-812, October 2025.
ABSTRACT Background The acidic weathering of soils is known as a problem for decades. It leads to the deterioration of essential soil properties, including soil fertility, water, or cation buffering capacity due to solution and solid storage of Al3+ by polymerization in the interlayer of (former) swellable clay minerals.
Jan Dietel, Kristian Ufer, Jens Gröger‐Trampe, Stephan Kaufhold, Reiner Dohrmann   +4 more
wiley   +1 more source

Clay mineral formation under oxidized conditions and implications for paleoenvironments and organic preservation on Mars [PDF]

, 2017
Clay mineral-bearing locations have been targeted for martian exploration as potentially habitable environments and as possible repositories for the preservation of organic matter.
Adcock, Christopher T., Bartlett, Courtney L., Ehlmann, Bethany L., Gainey, Seth R., Hausrath, Elisabeth M., Hurowitz, Joel A., Tschauner, Oliver, Xiao, Yuming   +7 more
core   +3 more sources

Calibration, Validation and Evaluation of Machine Learning Thermobarometers in Metamorphic Petrology: An Application to Biotite and Outlook for Future Strategy

Journal of Metamorphic Geology, Volume 43, Issue 8, Page 755-780, October 2025.
ABSTRACT Geothermobarometry provides crucial constraints on the physical conditions of metamorphism, offering insights into petrogenetic processes and providing key information on thermal regimes and metamorphic depths to other geological disciplines.
Philip Hartmeier, Jacob B. Forshaw, Pierre Lanari   +2 more
wiley   +1 more source

Preliminary Spectroscopic Observations of Marble-Hosted Rubies, Marginal Host Marbles, and Transition Zones Between Marbles and Rubies on Samples from Afghanistan, Myanmar, and Pakistan

Crystals
This study focusses on the spectroscopic observation of marbles, rubies and the transition zone between ruby and its hosted marble that may distinguish the origin of ruby.
Chen Fan, Yung-Chin Ding, Wing-Tak Lui
doaj   +1 more source

Structural iron in dioctahedral and trioctahedral smectites: a polarized XAS study [PDF]

Physics and Chemistry of Minerals, 2015
The chemical form of structural Fe in smectites influences many physicochemical properties of these clay minerals. Powder EXAFS data for structural Fe in smectites have been reported; however, the preferred orientation of clay platelets with respect to the X-ray beam may lead to erroneous conclusions on the local chemical environment.
Finck, N., Schlegel, M. L., Bauer, A.
openaire   +4 more sources

Microstructural analysis and magnetic characterization of native and magnetically modified montmorillonite and vermiculite [PDF]

, 2018
Two clay minerals of the similar 2 : 1 layer structure and chemical composition, vermiculite and montmorillonite, were studied using a wide spectrum of experimental methods in their original states and the magnetically modified states after mixing with ...
Bursík, Jiří, Jirásková, Yvonna, Mamulová Kutláková, Kateřina, Pospíšková, Kristýna, Seidlerová, Jana, Šafařík, Ivo, Šafaříková, Mirka, Životský, Ondřej   +7 more
core   +2 more sources

Multiple Episodes of Fluid Alteration in Jezero Crater Indicated by MIST Mineral Identifications in PIXL XRF Data From the First 1100 Sols of the Mars 2020 Mission

Journal of Geophysical Research: Planets, Volume 130, Issue 9, September 2025.
Abstract The Mineral Identification by Stoichiometry (MIST) algorithm can identify mineral species in geochemical data sets. MIST is applied to X‐ray fluorescence chemical analyses from the Planetary Instrument for X‐ray Lithochemistry (PIXL) on the Mars 2020 Perseverance rover to identify mineral phases in abraded rock targets at Jezero crater.
Eleanor L. Moreland, Kirsten L. Siebach, Gelu Costin, Mike M. Tice, Joel A. Hurowitz, Allan H. Treiman, Justin I. Simon, Yang Liu, Yueyang Jiang, Arya Udry, Erwin Dehouck   +10 more
wiley   +1 more source