Results 71 to 80 of about 1,669,383 (297)

A region-specific soil health assessment protocol and evaluation for Sub-Saharan Africa

Communications Earth & Environment
Tropical croplands sit on strongly weathered soils where soil functions and ecosystem services such as carbon storage are constrained by texture, mineralogy, climate, and pedogenesis, making direct comparison with temperate-derived soil health benchmarks
Moges Kidane Biru, Marcio R. Nunes, Mohkam-Singh, Cheryl L. Mackowiak, Gizachew Kebede Biratu, Niguse Bekele Dirbaba, Eyasu Elias, Tesfaye Shiferaw Sida   +7 more
doaj   +1 more source

Mineralogical Characteristics and The Pedogenetic Processes of Soils on Coral Reefs in Ambon

Indonesian Journal on Geoscience, 2014
http://dx.doi.org/10.17014/ijog.vol4no1.20093The mineralogical characteristics of soils developed on coral reef parent materials in Hitu and Wailiha, Ambon, were investigated regarding to the relationship to pedogenesis.
Rina Devnita
doaj   +1 more source

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

Quantifying the Contribution of Sediment Load to Soil Detachment Rate by Sediment-Laden Rill Flow

, 2017
Sediment load changes with downslope distance during rill erosion process, and thus quantifying the potential contribution of sediment load on soil detachment rate is essential to accurately model the rill erosion process.
Wang, ZL (reprint author), Chinese Acad Sci, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China., Wang, Dongdong, Wu, Bing, Shen, Nan, Liu, Jun'e, Wang, Zhanli, Zhang, Qingwei, Zhang, Qilin, Wang, ZL (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China., Wang, ZL (reprint author), Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China.   +9 more
core   +1 more source

Investigation on the mechanical behavior of the multiple‐layered lining structure of a water conveyance tunnel with high internal water pressure

Deep Underground Science and Engineering, EarlyView.
This study presents large‐scale similarity model testing (geometric ratio 3.6) of an innovative multiple‐layered lining system—comprising exterior precast segments, middle self‐compacting concrete, and an interior steel pipe—for high‐pressure (0.75 MPa) water conveyance tunnels.
Ramin Asadi, Shimin Wang, Chang Liu, Zhiyu Lin, Chuan He   +4 more
wiley   +1 more source

[United States Soil Survey Report]

, 1988
Map displays soil types along with creeks, towns, schools, churches, power transmission lines, oil and gas pipelines, roads, and railroads.
Texas Agricultural Experiment Station, United States. Soil Conservation Service., Texas State Soil and Water Conservation Board   +2 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

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

Obituary − Emeritus Professor Dr John Davidson McCraw (1925−2014) MBE, MSc NZ, DSc Well, CRSNZ, FNZSSS. [PDF]

, 2015
John McCraw was an Earth scientist who began working as a pedologist with Soil Bureau, DSIR, then became the Foundation Professor of Earth Sciences at the University of Waikato in Hamilton, inspiring a new generation to study and work in Earth sciences .
Nelson, Campbell S., Lowe, David J., Tonkin, Philip J.   +2 more
core  

Mitigating surcharge‐induced column‐head cracking in double‐deck shield tunnels using hyperelastic bearing joints

Deep Underground Science and Engineering, EarlyView.
A staged three‐dimensional nonlinear soil–structure interaction (SSI) model is established, in which the initial geostress state, tunnel excavation, lining installation, delayed activation of the internal frame, and subsequent surcharge loading are simulated sequentially.
Xinyu Liu, Xiang Ci, Weizhong Chen, Jianping Yang   +3 more
wiley   +1 more source