Results 71 to 80 of about 4,204 (206)

Discrete breathers for understanding reconstructive mineral processes at low temperatures [PDF]

, 2006
Reconstructive transformations in layered silicates need a high tem- perature in order to be observed. However, very recently, some systems have been found where transformation can be studied at temperatures 600 C below the lowest experimental results ...
Alba, M. D., Archilla, J. F. R., Cuevas, J, Naranjo, M., Trillo, J. M.   +4 more
core   +2 more sources

Laboratory‐Constrained Seismic Properties of the COSC‐2 Borehole, Scandinavian Caledonides: Implications for Crustal Anisotropy and Reflectivity

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.
Abstract Seismic surveys are essential for studying the Earth's subsurface. However, the interpretation of seismic surveys requires a link between field data and rock physical properties by linking laboratory‐derived data from drill core samples with borehole information and seismic images.
Markus Rast, Claudio Madonna, Nora Schweizer, Bjarne S. G. Almqvist, Jonas B. Ruh   +4 more
wiley   +1 more source

The origin and implications of clay minerals from Yellowknife Bay, Gale crater, Mars [PDF]

, 2015
The Mars Science Laboratory (MSL) rover Curiosity has documented a section of fluvio-lacustrine strata at Yellowknife Bay (YKB), an embayment on the floor of Gale crater, approximately 500 m east of the Bradbury landing site. X-ray diffraction (XRD) data
Bristow, Thomas F., Ehlmann, Bethany L., Grotzinger, John P.   +2 more
core   +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

Efficacy and Safety of the Enterosorbent Silicolgel in Irritable Bowel Syndrome, IBS‐D and IBS‐M: A Randomized, Double‐Blind, Placebo‐Controlled, Multi‐Center Trial

Neurogastroenterology &Motility, Volume 37, Issue 12, December 2025.
Current treatments often fall short in managing IBS effectively. Silicolgel, an enterosorbent, reduced IBS and other gastrointestinal symptoms in 90% of IBS patients compared to 20% in those on placebo. Enterosorbents are not currently recommended for IBS; silicolgel is a widely available, affordable option for patients with IBS‐D and IBS‐M.
O. Kuzminska, B. Vitkovska, Yurii Kuvaiskov, Chris G. Hatton   +3 more
wiley   +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

Soil K‐bearing minerals respond differently to various potassium extraction methods targeting phytoavailability

Soil Science Society of America Journal, Volume 89, Issue 6, November/December 2025.
Abstract Non‐exchangeable potassium (Nex‐K) released slowly from minerals is a key component of long‐term K fertility of agricultural soils. Two extraction methods are widely used to determine soil Nex‐K: the boiling nitric acid (HNO3) method and the tetraphenylborate (TPB) method.
Kohei Kurokawa, Atsushi Nakao, Atsuhito Suzuki, Shokichi Wakabayashi, Shigeto Fujimura, Tetsuya Eguchi, Takuro Shinano, Junta Yanai   +7 more
wiley   +1 more source

Mineralogical and Geochemical Characteristics of Al-rich Clays from the Longqi Hydrothermal Field, Southwest Indian Ridge

Yankuang ceshi, 2018
BACKGROUND The mineralogy, chemistry and crystal structure of hydrothermal clay minerals from various geologic settings have been studied to reflect the fluid-rock interaction and physico-chemical evolution of fluids in hydrothermal environments. However,
CAO Kai-jun, WU Zhong-wei, SUN Xiao-ming, WANG Yan, LIN Xiao   +4 more
doaj   +1 more source

Weathering of the Ethiopian volcanic province: a new weathering index to characterize and compare soils [PDF]

, 2015
© Walter de Gruyter Berlin/Boston 2015.Soil formation occurs through numerous physical and chemical weathering processes acting to alter the parent rock on the Earths surface.
Baxter, PJ, Berhanu, T, Cuadros, J, Davey, G, Le Blond, JS, Molla, YB, Umer, M   +6 more
core   +1 more source

Clay‐Mineral‐Coated Separators for Lithium‐Ion Batteries: Exploring the Relationships between Clay Mineral Morphology and Separator Performance

Advanced Science, Volume 12, Issue 40, October 27, 2025.
This review examines how coating Li‐ion battery separators with 1D, 2D, and 3D structured natural clay minerals influences their electrochemical and mechanical performance. It classifies 15 types of clay minerals and highlights structure–property correlations to offer practical design strategies for high‐performance separators in next‐generation energy
Inseo Ko, Seoyoung Ha, Weon Ho Shin, Jongyoung Choi, Sung Cik Mun, Yong‐Seok Choi, Jong Ho Won   +6 more
wiley   +1 more source