Results 41 to 50 of about 10,057 (205)
Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.Abstract Widespread plagioclase detections on Mars using orbital visible to near infrared (VNIR) reflectance spectra have led to multiple interpretations of “feldspathic” terrain, ranging from ancient crustal material and evolved plutons to volcanic lava flows.
Hunter Vannier +5 more
wiley +1 more source
Ultralight large grain porous material - expanded obsidian [PDF]
E3S Web of Conferences, 2019 In the production of crushed stone, lithoidal pumice and perlite sand, it is advisable to separate and segregate the obsidian. Wherein, the separated obsidian is converted into production waste.
Safaryan Artsruni +3 more
doaj +1 more source
Journal of the American Ceramic Society, Volume 109, Issue 9, September 2026.ABSTRACT The use of supplementary cementitious materials (SCMs) is a major way to reduce the carbon footprint of concrete. Mechanochemical activation (MCA) can be used to activate inert materials that can then be used as SCMs. In this study, the effect of MCA using a planetary ball mill was investigated for 16 materials, ranging from natural occurring ...
Sofiane Amroun, Prannoy Suraneni
wiley +1 more source
Meteoritics &Planetary Science, Volume 61, Issue 9, Page 2393-2405, September 2026.Abstract The light element distribution in planetary cores and the processes driving core evolution in rocky planets are poorly understood. Magmatic iron meteorites are samples from the cores of ancient embryonic planetesimals and therefore provide a window into the processes governing core evolution. We performed high precision oxygen isotope analyses
R. J. Windmill +4 more
wiley +1 more source
Journal of Lithic Studies, 2016 La María and Cerro Tres Tetas archaeological localities are located in the Central Plateau, in the province of Santa Cruz, Argentine Patagonia. This area presents abundant lithic raw materials of very good quality for knapping including flint, chalcedony
Manuel Enrique Cueto +2 more
doaj +1 more source
The Plant Journal, Volume 127, Issue 5, September 2026.SUMMARY As genomic datasets expand in both sample size and marker density, genome‐wide association studies (GWAS) and genomic selection (GS) require workflows that remain statistically rigorous, computationally efficient, and reproducible across the full analysis path, from genotype matrix to decision‐relevant outputs.
Jingxian Fu +3 more
wiley +1 more source
, 2018 Obsidian handcrafted objects. Obsidian is a type of volcanic glass which was used by PreHispanic cultures to make weapons which were 2x sharper than blades made from metal.https://scholarworks.uark.edu/gsiestdabphoto/1095/thumbnail ...
Kinnaman, Courtney
core +3 more sources
A Microphysical Model for Predicting Magma Fragmentation
Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.Abstract Explosive volcanic eruptions occur when coherent bubbly magma breaks apart in a process called “fragmentation.” Accurate conceptual and numerical models of fragmentation are a pre‐requisite for prediction of eruption explosivity. However, existing models, which neglect bubble‐scale magma physics, agree poorly with new experimental evidence ...
Jérémie Vasseur +6 more
wiley +1 more source
Thermal properties of vesicular rhyolite [PDF]
, 1994 Thermal diffusivity of rhyolite melt and rhyolite foam (70–80% porosity) has been measured using the radial heat transfer method. Cylindrical samples (length 50–55 mm, diameter 22 mm) of rhyolite melt and foam have been derived by heating samples of ...
Bagdassarov, Nikolai +1 more
core +1 more source
Advanced Experiment Design Strategies for Drug Development
Advanced Intelligent Discovery, Volume 2, Issue 4, August 2026.Wang et al. analyze 592 drug development studies published between 2020 and 2024 that applied design of experiments methodologies. The review surveys both classical and emerging approaches—including Bayesian optimization and active learning—and identifies a critical gap between advanced experimental strategies and their practical adoption in ...
Fanjin Wang +3 more
wiley +1 more source