Results 91 to 100 of about 1,629 (265)

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Uplift Behavior of Suction Bucket Foundations in Sands: Experimental and Numerical Investigations

Journal of Marine Science and Engineering
Suction bucket foundations offer efficient installation and reusability for offshore wind turbines, yet their uplift behavior in sands with different permeabilities remains insufficiently understood. This study investigates the uplift behavior of suction
Xin Wang, Xueliang Zhao, Weiming Gong, Yangyang Li, Wenni Deng   +4 more
doaj   +1 more source

Upper bound limit analysis of coral reef limestone cavern roof stability incorporating a tension‐shear failure mechanism with tensile‐strength cut‐off

Deep Underground Science and Engineering, EarlyView.
For the roof of coral reef limestone caverns, a novel tension‐shear composite failure mechanism was developed. The most critical tensile crack model was identified using a hybrid optimization algorithm, and the stability of the cavern roof was analyzed accordingly.
Dongsheng Xu, Chenxu Li, Chuantan Hou
wiley   +1 more source

Time-dependent reliability analysis of pile foundations considering dredging strategies

Shuili Shuiyun Gongcheng Xuebao
To develop a structural reliability analysis method for the interaction system between silted slopes and high-piled wharves, a two-dimensional diffusion model considering chloride ion erosion effects was derived based on Fick’s second law.
HAN Qingyu, CUI Chunyi, XIONG Qi, ZHAO Min, LIU Hailong, YOU Zaijin, JI Zezhou   +6 more
doaj   +1 more source

Major engineering breakthrough of Well XA‐1, the deepest ten‐thousand‐meter well in a global sedimentary basin

Deep Underground Science and Engineering, EarlyView.
Well XA‐1, completed at a true vertical depth of 11 156 m in the Shawan Sag of the Junggar Basin, is the deepest predominantly near‐vertical well drilled in a sedimentary basin. The figure shows the basin's tectonic framework and well location (a), a structural cross‐section spanning the Shawan Sag and adjacent uplifts (b), and the stratigraphic column
Fangkai Liu, Qingwen Tan, Sen Zhu, Guangyou Zhu   +3 more
wiley   +1 more source

Numerical Simulation of Vertical Cyclic Responses of a Bucket in Over-Consolidated Clay

Journal of Marine Science and Engineering
Multi-bucket foundations have become an alternative for large offshore wind turbines, with the expansion of offshore wind energy into deeper waters. The vertical cyclic loading–displacement responses of the individual bucket of the tripod foundation are ...
Jun Jiang, Chengxi Luo, Dong Wang
doaj   +1 more source

Community‐level egg and larval trait interactions with the Amazon River plume determine its role as a dispersal barrier

Ecography, EarlyView.
The Amazon River plume (ARP) functions as a dynamic and porous biogeographic barrier whose permeability to larval dispersal depends on the interplay between species' biological traits and oceanographic processes. Using biophysical modeling combined with a dual analytical framework, namely a multivariate regression tree (MRT) and a generalized additive ...
Ramon B. Santos, Nelson A. Gouveia, Douglas F. M. Gherardi   +2 more
wiley   +1 more source

Addressing Barriers to Fair Community Participation in Mangrove Carbon Credit Projects: Insights From Thailand

Environmental Policy and Governance, EarlyView.
ABSTRACT Thailand has announced ambitious plans to reduce greenhouse gas emissions, including a programme that allows private companies to earn carbon credits from protecting and restoring mangroves. In 2023, the Department of Marine and Coastal Resources (DMCR) began enrolling local communities and private firms in this scheme.
Danny Marks, Kittima Leeruttanawisut
wiley   +1 more source

Life cycle assessment of a microfluidic electrolytic cell using Bi–Sn nanoparticle catalyst and an ionic liquid electrolyte

Environmental Progress &Sustainable Energy, EarlyView.
Abstract The electrochemical reduction of carbon dioxide (CO2) to produce formic acid is a sustainable and crucial method for combating greenhouse gas emissions and addressing global warming. This study focuses on conducting a life cycle assessment of formic acid synthesis using microfluidic electrolytic cells with Bi–Sn catalyst and [EMIM][BF4] (1 ...
Akaninyene Christopher Offong, Abdulhakim Adeoye Shittu, Sunday Amos Onikanni, James Okpor   +3 more
wiley   +1 more source

Decommissioning Offshore Wind Fixed Steel Pile Foundations: A Critical Review

Energies
Offshore wind has rapidly developed over the past three decades, with over 6000 fixed-bottom substructures installed in Europe alone as of 2022. Despite this progress, there has been limited focus on the end-of-life stages, particularly decommissioning ...
Ahmed Al Mowafy, Saeid Lotfian, Feargal Brennan   +2 more
doaj   +1 more source