Results 71 to 80 of about 541,326 (254)

Probabilistic characterization of seepage‐induced tunnel face failure via a two‐phase double‐point material point method

Deep Underground Science and Engineering, EarlyView.
To address seepage‐induced tunnel face collapse, this study develops a two‐phase double‐point MPM framework to capture large‐deformation hydro‐mechanical interactions. Incorporating a cementation‐based constitutive model with dynamic permeability updates, the model is successfully validated against saturated granular‐column collapse experiments ...
Yue Tong, Mingliang Zhou, Jie Xu, Zeyu Li, Yisheng Zhao, Jin An, Hongwei Huang   +6 more
wiley   +1 more source

Pollution indices and ecological risk assessment associated with potentially toxic elements in irrigation sediments of Usangu agro-ecosystem

Environmental Challenges
Irrigated agricultural landscapes are increasingly recognized as critical interfaces where nutrient enrichment and trace metal (PTEs) accumulation may threaten soil health, food safety, and downstream ecosystems. Yet, quantitative assessments of sediment
Marco E. Mng’ong’o
doaj   +1 more source

The search for plausible economic mineral deposits in the central parts of Tanzania; insight from stream sediment geochemistry, multivariate statistics and geostatistics. [PDF]

Heliyon, 2023
Nunoo S, Mvile BN, Abu M, Kelimenze JD.
europepmc   +1 more source

Analysis of lining force transmission coefficient and surrounding rock displacement in lined rock caverns for underground gas storage

Deep Underground Science and Engineering, EarlyView.
This study derives an explicit expression for the lining force transmission coefficient of underground gas storage lined rock caverns (LRCs) via the complex variable function method, considering the displacement release coefficient. Taking the 1‰ tensile strain of surrounding rock as the criterion to determine lining thickness, it systematically ...
Yaohui Li, Jianping Yang, Weizhong Chen
wiley   +1 more source

Aurignacian dynamics in Southeastern Europe based on spatial analysis, sediment geochemistry, raw materials, lithic analysis, and use-wear from Românești-Dumbrăvița. [PDF]

Sci Rep, 2022
Chu W, McLin S, Wöstehoff L, Ciornei A, Gennai J, Marreiros J, Doboș A.   +6 more
europepmc   +1 more source

Geochemistry of sediment core M77/1_526 (outdated version)

, 2013
Geochemistry of sediment core M77 ...
Stefan Sommer (6967634), Bleyer, Anke, Scholz, Florian, Florian Scholz (6959999), Sommer, Stefan, Christian Hensen (6960071), Anke Bleyer (6967622), Noffke, Anna, Regina Surberg (6967631), Anna Noffke (6967628), Hensen, Christian, Domeyer, Bettina, Bettina Domeyer (6967625), Surberg, Regina   +13 more
core   +1 more source

Reusing depleted oil and gas wells for geothermal energy: Feasibility, challenges, and a decision‐making framework for sustainable conversion

Deep Underground Science and Engineering, EarlyView.
The graphical abstract presents a structured decision‐support framework for assessing the feasibility of converting depleted oil and gas wells into geothermal energy systems. The left panel illustrates a comprehensive, multi‐stage decision‐making framework progressing from prefeasibility screening and technical–economic analysis to policy alignment ...
Karolina Bieryt, Yu Pan, Heinz Konietzky, Fei Wang   +3 more
wiley   +1 more source

Characterization of extractable metals from the aquifers with arsenic contamination in the Tsengwen Creek, Taiwan

Soil and Water Research, 2014
Arsenic contamination in groundwater is a common groundwater problem worldwide. To manage groundwater resources effectively, it is crucial to determine the arsenic source.
Hsueh-Yu LU
doaj   +1 more source

Renewable energy mapping in Northeastern Morocco: A geographic information system‐based comparison of geothermal, solar, and wind potential in the Guercif‐Guilliz and Beni Snassen regions

Deep Underground Science and Engineering, EarlyView.
The graphical abstract summarizes a geographic information system (GIS)‐based synthesis of renewable energy resources in Northeastern Morocco, focusing on the Guercif‐Guilliz and Beni Snassen areas. It visually presents the spatial distribution of solar irradiation and wind energy potential derived from available datasets, alongside their relationship ...
Meryem Redouane, Hind Khalis, Faouziya Haissen, Othman Sadki, Hicham El Asmi, Abdelbarie Redouane   +5 more
wiley   +1 more source

Landscape-driven phosphorus distribution and transformations in an intermittent river of semiarid Brazil

Frontiers in Water
Intermittent rivers and ephemeral streams (IRES) are central to nutrient transport in semiarid regions, yet their role in phosphorus (P) dynamics under combined natural and anthropogenic pressures remains poorly understood.
Antonio E. B. Silva, Antonio E. B. Silva, Hermano M. Queiroz, Daniel P. Oliveira, Giovanna Bergamim Araujo Lopes, Tamara M. Pereira, Gabriel N. Nóbrega, Diego Barcellos, Carla F. Rezende, Tiago O. Ferreira, Tiago O. Ferreira   +10 more
doaj   +1 more source