Results 81 to 90 of about 64,353 (279)

Estimation of the hydraulic parameters of unsaturated samples by electrical resistivity tomography [PDF]

, 2012
In situ and laboratory experiments have shown that electrical resistivity tomography (ERT) is an effective tool to image transient phenomena in soils. However, its application in quantifying soil hydraulic parameters has been limited.
Bear J., Brooks R. H., Comina C., Comina C., Corey A. T., Dalla E., Deiana R., G. DELLA VECCHIA, G. MUSSO, Hadamard J., Hillel A. C., Hopmans J. W., Lee J. Y., Menke W., Michot D., Mitchell J. K., R.M. COSENTINI, Reynolds J. M., Romero E., S. FOTI, Santamarina J. C., Singha K., Tikhonov A. N., Vanderborght J.   +23 more
core   +1 more source

Subsurface Investigations of Cryo‐Hydrogeological Features in a High Arctic Catchment Under Transition

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT In this study, the internal structure and seasonal variations of cryo‐hydrogeological features were investigated in the Fuglebekken catchment, located near the Polish Polar Station Hornsund in Svalbard. Over a few years, rising air temperatures and intensified water circulation have significantly altered the distribution, extent, and state of ...
Wawrzyniak Tomasz, Oryński Szymon, Marciniak Artur, Osuch Marzena   +3 more
wiley   +1 more source

Stability of 3D tunnel face under steady unsaturated seepage coupled multi-layer soil suction head distributions

Alexandria Engineering Journal
This paper proposes a new discrete approach for analyzing tunnel face stability in stratified soils under unsaturated seepage conditions. Traditional methods have primarily focused on homogeneous soils, neglecting the spatial variability of unsaturated ...
Huanjiang Wu, Hong Liao, Chaoguang Wu
doaj   +1 more source

The influence of changes in water content on the electrical resistivity of a natural unsaturated loess [PDF]

, 2012
Non-destructive methods of measuring water content in soils have been extensively developed in the last decades, especially in soil science. Among these methods, the measurements based on the electrical resistivity are simple and reliable thanks to the ...
Cui, Yu Jun, Delage, Pierre, Munoz-Castelblanco, José, Pereira, Jean-Michel   +3 more
core   +3 more sources

Catchment-scale non-linear groundwater-surface water interactions in densely drained lowland catchments [PDF]

, 2009
Freely discharging lowland catchments are characterized by a strongly seasonal contracting and expanding system of discharging streams and ditches. Due to this rapidly changing active channel network, discharge and solute transport cannot be modeled by a
Rooij, G.H., de, Torfs, P.J.J.F., Velde, Y., van der   +2 more
core   +3 more sources

SYN‐A, a naturally derived synergist, restores pyrethroid efficacy against cabbage stem flea beetle but negatively impacts its parasitoid Microctonus brassicae

Pest Management Science, EarlyView.
SYN‐A, a naturally derived synergist, inhibited key metabolic pathways associated with pyrethroid insecticide resistance in cabbage stem flea beetle (CSFB) and its parasitoid Microctonus brassicae. SYN‐A restored pyrethroid efficacy against resistant CSFB allowing up to 80% reduction in application rates.
Patricia A. Ortega‐Ramos, Graham D. Moores, Samantha M. Cook   +2 more
wiley   +1 more source

Interpreting Measurements of Small Strain Elastic Shear Modulus under Unsaturated Conditions [PDF]

, 2016
Bender element testing of unsaturated isotropically compacted speswhite kaolin samples was used to investigate the variation of small strain elastic shear modulus G under unsaturated conditions. Testing was performed in a suction-controlled triaxial cell
Hasan, Ahmed Mohammed, Wheeler, Simon
core   +2 more sources

Nanoemulsion design of Cynara cardunculus leaves extract rich in sesquiterpene lactones

Pest Management Science, EarlyView.
This work introduces a novel formulation strategy that advances the potential of Cynara cardunculus leaf extract enriched in sesquiterpene lactones as a bioherbicide and contributes to the broader development of sustainable weed management tools based on natural products.
Daniela Rosa, Carlos Rial, Miguel Palma, Francisco J. Rodríguez‐Mejías, Rosa M. Varela, Francisco A. Macías, Maria F. Duarte   +6 more
wiley   +1 more source

Effects of Freezing on Soil Temperature, Freezing Front Propagation and Moisture Redistribution in Peat: Laboratory Investigations [PDF]

, 2012
There are not many studies that report water movement in freezing peat. Soil column studies under controlled laboratory settings can help isolate and understand the effects of different factors controlling freezing of the active layer in organic covered ...
Hayashi, Masaki, Nagare, Ranjeet M., Quinton, William L., Schincariol, Robert A.   +3 more
core   +1 more source

Modelling the thermo-mechanical volume change behaviour of compacted expansive clays [PDF]

, 2009
Compacted expansive clays are often considered as a possible buffer material in high-level deep radioactive waste disposals. After the installation of waste canisters, the engineered clay barriers are subjected to thermo-hydro-mechanical actions in the ...
Cui, Yu-Jun, Tang, Anh-Minh
core   +5 more sources