Results 51 to 60 of about 922,701 (227)

Determination of the Unsaturated Hydraulic Parameters of Compacted Soil Under Varying Temperature Conditions

Geotechnics
Heat storage in compacted soil embankments is a promising technology in energy geotechnics, but its impact on the thermo-hydraulic behavior of unsaturated soils remains insufficiently understood. This paper investigates coupled heat and moisture transfer
Rawan El Youssef, Sandrine Rosin-Paumier, Adel Abdallah   +2 more
doaj   +1 more source

Unsaturated Hydraulic Conductivity Measurements with Centrifuges: A Review

Vadose Zone Journal, 2009
Conducting drainage or imbibition experiments in a centrifugal force field has long been recognized as a valid and efficient way to determine capillary pressure–saturation and relative permeability–saturation relationships. Experiments involving multiphase flow of immiscible fluids in porous media are sped up because the centrifugal acceleration is ...
E. H. van den Berg, E. Perfect, C. Tu, P. S. K. Knappett, T. P. Leao, R. W. Donat   +5 more
openaire   +1 more source

Can DNA from wet, temperate soils be used for palaeoecological reconstruction?

Journal of Quaternary Science, EarlyView.
ABSTRACT Sedimentary ancient DNA in well‐dated contexts (sedaDNA) has great potential as a palaeoecological proxy. A few studies have attempted palaeoecological reconstructions using sedaDNA from soil; these studies have been mainly restricted to cold and/or dry soils.
Nick A. Cutler, Doreen Yu‐Tuan Huang, Richard T. Streeter, Andrew J. Dugmore   +3 more
wiley   +1 more source

Determining the Optimal Water Storage Depth of Apple Orchards in the Chinese Loess Plateau: Balancing Soil Desiccation Mitigation, Plant Utilization, and Engineering Construction

Land Degradation &Development, EarlyView.
ABSTRACT Deep‐rooted plantations are central to dryland ecological restoration, yet their long‐term cultivation drives widespread deep soil desiccation, threatening ecosystem sustainability. While artificial water replenishment is a key deep soil desiccation mitigation strategy, the depth‐dependent positional effect of stored water on eco‐hydrological ...
Haoyan Wei, Xuguang Zhang, Yanwei Lu, Sk Shamshul Alam Kamar, Hailong He, Xia Wang, Min Li   +6 more
wiley   +1 more source

Random forest, M5P and regression analysis to estimate the field unsaturated hydraulic conductivity

Applied Water Science, 2019
Hydraulic conductivity of soil reveals its influencing role in the studies related to management of surface and subsurface flow, e.g. irrigation and drainage projects, and solute mass transport models.
Parveen Sihag, Sahar Mohsenzadeh Karimi, Anastasia Angelaki   +2 more
doaj   +1 more source

Corrosion of Potential Canister Materials During Oxic to Anoxic Transient in Compacted Bentonite

Materials and Corrosion, EarlyView.
A comprehensive analytical approach was applied to investigate material degradation phenomena of cast iron and copper as potential canister materials for the safe disposal of high‐level radioactive waste, as well as compacted bentonite exposed to artificial water relevant for disposal. ABSTRACT The long‐term performance of the engineered barrier system
Louisa Panjiyar, Martin Ende, Nicolas Finck, Christiane Stephan‐Scherb   +3 more
wiley   +1 more source

Influence of Relative Permeability Formulations on Hysteretic Seepage in Infinite Slopes

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT The paper investigates the impact of two classical relative permeability formulations, one expressed in terms of pore water pressure and the other in terms of degree of saturation, on the predicted seepage in an infinite slope subjected to surface pore pressure variations.
Diana Bianchi, Rossella Bovolenta, Martino Leoni, Domenico Gallipoli   +3 more
wiley   +1 more source

An Elasto–Plastic Hydro–Mechanical Model for Analyzing the Swelling Behavior of Heterogeneous Clay–Sulfate Rocks

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Swelling of clay‐sulfate rocks is a concern in geotechnical engineering that can damage infrastructure. In the historic town of Staufen in southwest Germany, geothermal drilling into a swellable anhydrite‐bearing clay formation resulted in water inflow and subsequent swelling, triggering ground heave and damage to more than 250 houses.
Reza Mahmoudi Kouhi, Reza Taherdangkoo, Thomas Nagel, Faramarz Doulati Ardejani, Christoph Butscher   +4 more
wiley   +1 more source

Describing the soil physical characteristics of soil samples with cubical splines [PDF]

, 2008
The Mualem-Van Genuchten equations have become very popular in recent decades. Problems were encountered fitting the equations¿ parameters through sets of data measured in the laboratory: parameters were found which yielded results that were not ...
Ritsema, C.J., Oostindie, K., Dekker, K., Wesseling, J.G., Stolte, J.   +4 more
core   +1 more source

Examining the effect of pore size distribution and shape on flow through unsaturated peat using computed tomography [PDF]

Hydrology and Earth System Sciences, 2009
The hydraulic conductivity of unsaturated peat soil is controlled by the air-filled porosity, pore size and geometric distribution as well as other physical properties of peat materials. This study investigates how the size and shape of pores affects the
F. Rezanezhad, W. L. Quinton, J. S. Price, D. Elrick, T. R. Elliot, R. J. Heck   +5 more
doaj