Results 31 to 40 of about 286 (108)

Assessing Structural Geological Controls on Groundwater Processes in Mountain Settings: Insights From Three‐Dimensional Numerical Modeling

open access: yesWater Resources Research, Volume 61, Issue 8, August 2025.
Abstract Mountains play a critical role in the hydrological cycle by transferring heavy precipitation to lowland aquifers. However, their complexity and remoteness limit our understanding of groundwater flow, particularly the influence of faults. To fill the gap, semi‐idealized 3D numerical models calibrated using the mountain river network and the ...
Etienne Marti   +8 more
wiley   +1 more source

Hydrogen isotope permeation behavior in a blanket module using a novel gas-driven permeation device

open access: yesNuclear Fusion
The tritium permeation barrier (TPB) on reduced activation ferritic/martensitic steel is critical for ensuring both tritium self-sustainability and safety in fusion reactors. Evaluating the performance of TPB-containing modules with complex geometries is
Jun Yi   +7 more
doaj   +1 more source

Multi‐Elemental Tracers in the Amerasian Basin Reveal Interlinked Biogeochemical and Physical Processes in the Arctic Ocean Upper Halocline

open access: yesGlobal Biogeochemical Cycles, Volume 39, Issue 4, April 2025.
Abstract The physical and biogeochemical properties of the western Arctic Ocean are rapidly changing, resulting in cascading shifts to the local ecosystems. The nutrient‐rich Pacific water inflow to the Arctic through the Bering Strait is modified on the Chukchi and East Siberian shelves by brine rejection during sea ice formation, resulting in a ...
L. M. Whitmore   +26 more
wiley   +1 more source

Pregnenolone Sulfate Permeation at the Blood–Brain Barrier is Independent of OATP2B1—In Vivo and In Vitro Insights

open access: yesBiopharmaceutics &Drug Disposition, Volume 46, Issue 1, Page 33-46, February 2025.
In our study we report that OATP2B1 does not mediate pregnenolone sulfate transport across the blood–brain barrier in rats and in a human cell model, thus suggesting alternative mechanisms involved in pregnenolone sulfate brain uptake. ABSTRACT Sulfated steroids such as pregnenolone sulfate (PregS) are important for neuronal development and cognitive ...
Valerio Taggi   +6 more
wiley   +1 more source

Stimuli‐Responsive Silica Silanol Conjugates: Strategic Nanoarchitectonics in Targeted Drug Delivery

open access: yesSmall, Volume 20, Issue 39, September 26, 2024.
The silica surface silanol chemistry and its conjugation to different cargos through stimuli‐responsive linkers are highly desired. This review elucidates silica's surface chemistry, types of silanols, silanol number and chemistry, chemical and physical identification, functionalization, and stimuli‐responsive for precise drug delivery systems ...
Shan Mohanan   +4 more
wiley   +1 more source

Preparing Al2O3/TiO2 nano-multilayers on the surface of FeAl/Al2O3 coating as tritium permeation barrier

open access: yesNuclear Fusion
Preparing tritium permeation barrier (TPB) coating on the surface of structural materials can effectively alleviate tritium permeation in fusion reactor system.
Enkai Guo   +7 more
doaj   +1 more source

Microstructural and mechanical properties of Al-base coated EUROFER-97

open access: yesNuclear Materials and Energy
Coolant-facing alloys in a tokamak will face harsh environments due to the synergistic effect of flowing coolant, dynamic mechanical loading, ionising radiation, and tritium embrittlement. Reduced activation ferritic/martensitic (RAF/M) EUROFER-97 is the
Liberato Volpe   +3 more
doaj   +1 more source

Formation of a Large Cold Groundwater Mantle Helium Anomaly and High Temperature Geothermal Resources in Response to Bimodal Magmatism Near Roosevelt Hot Springs and Utah FORGE, Milford Valley, Southwest Utah

open access: yesGeochemistry, Geophysics, Geosystems, Volume 25, Issue 9, September 2024.
Abstract A large mantle helium anomaly and separate domains of high heat flow are the predominant manifestations of bimodal magmatic activity in the Milford valley. The mantle helium anomaly (1.9–2.6 R/Ra) covers 270 km2 and is subdivided into two separated domains: a cold shallow groundwater regime and high temperature hydrothermal activity.
Stuart F. Simmons, Stefan Kirby
wiley   +1 more source

Magnesium Test: Universal and Ultra‐Sensitive Method for Measuring Reliability of Thin‐Film‐Encapsulated Bioelectronic Implants in Physiological Environment

open access: yesAdvanced Functional Materials, Volume 34, Issue 32, August 8, 2024.
A robust method is proposed that addresses a longstanding need for in situ assessment of thin film hermeticity. It allows for a quantitative evaluation of various types of TFE for bioelectronic systems in a manner that is reliable, robust, and ultra‐sensitive. Furthermore, it can serve as an in vivo quality control and reliability test for all types of
Massimo Mariello   +14 more
wiley   +1 more source

Microstructure evolution of γ-Al2O3/FeAl tritium permeation barrier coatings under 6.4 MeV Fe3+ ion irradiation

open access: yesNuclear Materials and Energy
γ-Al2O3/FeAl coatings for tritium permeation barrier (TPB) application in fusion reactors were fabricated via electro-chemical deposition and selective oxidation. The TPB coatings consisted of a γ-Al2O3 scale (200 nm), an upper interlayer of FeAl (20 μm)
Fengcheng Liu   +6 more
doaj   +1 more source

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