Results 41 to 50 of about 638,398 (175)

An Analytical Model for Evaluating the Hydraulic Conductivity of the Fracture‐Conduit‐Matrix System

open access: yesGeophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract In the fracture‐conduit‐matrix system, distinct shape differences among water‐conducting channels (fractures and conduits) hinder developing an analytical model for flow characteristics and hydraulic conductivity assessment. To address this, we introduce the elliptic‐conduit‐matrix model (ECMM) under velocity slip interface conditions.
Shuai Zhang   +3 more
wiley   +1 more source

Adsorption Mechanisms and AI‐Driven Discovery of Biomass‐Based CO2 Sorbents

open access: yesSmall, Volume 21, Issue 47, November 27, 2025.
This review analyzes recent advances in biomass‐derived activated carbons for CO2 capture. It highlights the influence of precursors, activation methods, and surface modifications on adsorption performance. The integration of AI‐driven approaches for material optimization is discussed.
Faezeh Hajiali   +6 more
wiley   +1 more source

Geophysical surveys near Strontian, Highland Region [PDF]

open access: yes, 1986
Reconnaissance VLF-EM and magnetic surveys have bean carried out over Ba- Pb-Zn prospects in an area near Strontian in the Highland Region of Scotland.
Kimbell, G.S.
core  

D‐Region Changes and Wave Activity Detected From Unusually Strong VLF Anomalies Associated With the January 2022 Tonga Volcanic Eruption

open access: yesJournal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract We present unusually strong daytime signal amplitude anomalies of 11.1 dB on JJI and 12.6 dB on VTX very low‐frequency (VLF) transmitter signals recorded at Suva, Fiji, due to the powerful Hunga Tonga–Hunga Ha'apai (HTHH) volcanic eruption (VE) on 15 January 2022 around 04:00 UT.
Sushil Kumar, Sarwan Kumar, Mie Ichihara
wiley   +1 more source

The Physics Potential of Future Long Baseline Neutrino Oscillation Experiments [PDF]

open access: yes, 2002
We discuss in detail different future long baseline neutrino oscillation setups and we show the remarkable potential for very precise measurements of mass splittings and mixing angles.
Ahmad   +42 more
core   +9 more sources

Hydrothermal Alteration, Mineralization, and Structural Geology of the Zijinshan High-Sulfidation Au-Cu Deposit, Fujian Province, Southeast China

open access: yesEconomic Geology, 2019
Zijinshan is a world-class Au-Cu district located in southwest Fujian Province, southeast China. It contains a diverse array of ore deposits hosted by the Zijinshan granite complex and surrounding volcano-sedimentary rocks.
Jing Chen   +5 more
semanticscholar   +1 more source

ERF: Energy Research and Forecasting Model

open access: yesJournal of Advances in Modeling Earth Systems, Volume 17, Issue 11, November 2025.
Abstract High performance computing (HPC) architectures have undergone rapid development in recent years. As a result, established software suites face an ever increasing challenge to remain performant on and portable across modern systems. Many of the widely adopted atmospheric modeling codes cannot fully (or in some cases, at all) leverage the ...
Aaron Lattanzi   +10 more
wiley   +1 more source

A Compact Ion‐Electron Plasma Camera Spectrometer With an Instantaneous Hemispheric Field of View

open access: yesJournal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract Using additive manufacturing and a selective metalization technique, we have developed a compact ion/electron plasma camera based on the donut topology. With its instantaneous field of view of 2πsr $2{\uppi }\mathrm{s}\mathrm{r}$, it eliminates the need for electrostatic deflectors.
Gwendal Hénaff   +5 more
wiley   +1 more source

Titan's past and future: 3D modeling of a pure nitrogen atmosphere and geological implications

open access: yes, 2014
Several clues indicate that Titan's atmosphere has been depleted in methane during some period of its history, possibly as recently as 0.5-1 billion years ago. It could also happen in the future.
Charnay, Benjamin   +4 more
core   +3 more sources

Arsenic in the Water, Soil Bedrock, and Plants of the Ester Dome Area of Alaska [PDF]

open access: yes, 1982
Concentrations of arsenic as large as 10 ppm (200 times the safe limit for drinking water) occur in the groundwater of a mineralized residential area near Fairbanks. Bedrock of the area contains 750 ppm As, primarily as arsenopyrite and scorodite. The
Dinkel, Donald   +3 more
core  

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