Results 191 to 200 of about 28,555 (287)

Spatial and Temporal Patterns of Alkalinity in an Alpine Headwater Stream Network: Linking Catchment Heterogeneity to Carbon Dynamics

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 131, Issue 6, June 2026.
Abstract Alkalinity is a key regulator of carbon dioxide (CO2 ${\text{CO}}_{2}$) dynamics in freshwater systems, influencing both dissolved inorganic carbon speciation and the buffering capacity of water. Despite its importance, alkalinity in freshwater environments remains comparatively underexplored relative to ocean systems.
Francesco Presotto   +4 more
wiley   +1 more source

Pore‐Scale Modeling of Fracture Evolution Driven by Dual‐Mineral Dissolution With Contrasting Reactivity and Morphology

open access: yesWater Resources Research, Volume 62, Issue 6, June 2026.
Abstract Predictive models for reactive flow in fractured media often adopt single‐mineral simplifications, neglecting feedback between mineralogical heterogeneity and hydrological evolution. This study investigates the pore‐scale dynamics of fracture evolution in dual‐mineral systems characterized by contrasting mineral reactivities and morphologies ...
Heewon Jung, Sunwong Lim
wiley   +1 more source

Relation Between Thermal Analysis, Phase Composition and Structure of Polyurethane Adhesives for Application in Wooden Structural Joints. [PDF]

open access: yesPolymers (Basel)
Szumera M   +8 more
europepmc   +1 more source

Occurrence of a Cavity‐Nesting Tropical Swallow Is Associated to Riverbed Lithology

open access: yesAustral Ecology, Volume 51, Issue 6, June 2026.
ABSTRACT Understanding the factors shaping species distribution is a key challenge in ecology and biogeography. While dispersal limitations, environmental features, and biotic interactions are commonly recognized as key determinants of species abundance and distribution, some species exhibit patchy distributions that remain hard to explain.
Leonardo Esteves Lopes   +9 more
wiley   +1 more source

New Magnetite Reference Material for SIMS δ18O Measurements and a Study of Precision and Accuracy Due to Crystal Orientation Effects

open access: yesGeostandards and Geoanalytical Research, Volume 50, Issue 2, Page 391-406, June 2026.
Key Points A new magnetite reference material (PF21mt) is available for δ18O measurements by SIMS. Reproducibility of measurement results in two laboratories suggest orientation bias of ±2‰ (2s) at 20 keV. Repeatability improves to ±1‰ (2s) when using a 13 keV protocol, suggesting reduced orientation bias. In situ isotope ratio measurements provide the
Michelle Ulrich   +4 more
wiley   +1 more source

Microbial endolithic community at Meteor Crater

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 6, Page 955-962, June 2026.
Abstract Postimpact recovery and evolution in response to climate changes produced a modern ecosystem at Meteor Crater dominated by a grassland and woodland of piñon and juniper, which has been used to evaluate floral and megafaunal consequences of impact cratering during the Phanerozoic Eon of complex life.
David A. Kring, Charles S. Cockell
wiley   +1 more source

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