Results 21 to 30 of about 111,699 (333)

EFFECT OF WETTING AND DRYING CYCLES ON ADDED POTASSIUM RELEASE TO SOME CALCAREOUS SOILS IN NORTH IRAQ [PDF]

Mesopotamia Journal of Agriculture, 2010
Two surfaces soils horizon from calcareous soils in Mosul city classified as calciorthid with semictite dominance were chosen to study the effect of wetting and drying cycles on release of native and added potassium.Potassium was added to soil samples at
M. A-alobaidi
doaj   +3 more sources

Stability of Expansive Soil Slopes under Wetting–Drying Cycles Based on the Discrete Element Method [PDF]

Water
The swelling-shrinkage behavior of expansive soils under climate changes will cause the crack development, which can be destructive of expansive soil slopes.
Hao Wang, Yejiao Wang, Fujie Jin
semanticscholar   +2 more sources

Chloride Ion Penetration into Cracked UHPFRC During Wetting-drying Cycles [PDF]

, 2021
The subject of this paper is the extent to which, during wetting–drying cycles, chloride ions can penetrate Ultra-high-Performance Fibre Reinforced Cementitious Composites (UHPFRC) specimens subjected to combined mechanical and environmental load. Pre-cracking was obtained by subjecting prismatic specimens (40 × 40 × 60mm3) to four-point bending until ...
Ana Mafalda Matos, Sandra Nunes, Stefan Chaves Figueiredo, Erik Schlangen, José L. Barroso Aguiar   +4 more
openaire   +5 more sources

Cracking of silty mudstone subjected to wetting-drying cycles

Journal of Rock Mechanics and Geotechnical Engineering
Cracking affected by wetting-drying cycles is a major cause of shallow failure of soft rock slopes. Knowledge of rock tensile properties and cracking behaviors helps better assess the stability of soft rock slopes. This study aims to examine the cracking
Xiaowei Yu, Hongyuan Fu, Ling Zeng, Guijin Zhang, Hongri Zhang, Jie Liu   +5 more
doaj   +2 more sources

Physical Properties of Sandy Soil Affected by Soil Conditioner Under Wetting and Drying cycles [PDF]

Journal of Agricultural and Marine Sciences, 1998
Information on the effectiveness of soil conditioners over a prolonged period is scarce. A laboratory experiment was undertaken to evaluate the effectiveness of a polyacrylamide (Broadleaf P4) soil conditioner on the physical properties of sandy soil ...
M.I. Choudhary, A.M. AI-Omran, A.A. Shalaby   +2 more
doaj   +4 more sources

Visualizing RNA polymers produced by hot wet-dry cycling [PDF]

Scientific Reports, 2022
Abstract It is possible that the transition from abiotic systems to life relied on RNA polymers that served as ribozyme-like catalysts and for storing genetic information. The source of such polymers is uncertain, but previous investigations reported that wet–dry cycles simulating prebiotic hot springs provide sufficient energy to drive ...
Hassenkam, Tue, Deamer, David
openaire   +4 more sources

Evolution of desiccation cracking behavior of clays under drying-wetting cycles

Rock and Soil Mechanics, 2021
Soils usually experience multiple drying-wetting cycles in nature, which can have a significant impact on the engineering properties of soils. Laboratory tests were conducted to investigate the effect of drying-wetting cycles on the initiation and ...
LIU Jun-dong , TANG Chao-sheng, ZENG Hao, SHI Bin   +3 more
doaj   +1 more source

Sustained wet–dry cycling on early Mars

Nature, 2023
The presence of perennially wet surface environments on early Mars is well documented1,2, but little is known about short-term episodicity in the early hydroclimate3. Post-depositional processes driven by such short-term fluctuations may produce distinct structures, yet these are rarely preserved in the sedimentary record4.
Rapin, W., Dromart, G., Clark, B., Schieber, J., Kite, E., Kah, L., Thompson, L., Gasnault, O., Lasue, J., Meslin, P.-Y., Gasda, P., Lanza, N.   +11 more
openaire   +4 more sources

Effects of Wetting-drying Cycles on Bulk Density and Saturated Hydraulic Conductivity of Soils

Guan'gai paishui xuebao, 2022
【Objective】 Changes in density and hydraulic conductivity of soil not only modulate subsurface hydrological processes but also affect root growth and root uptake of water and nutrients from soil.
SUN Zhaojun, LI Jinshan, JIA Yanhui, LI Hao   +3 more
doaj   +1 more source

Volume Changes and Mechanical Properties of Expansive Mudstone below Canals under Wet‐Dry/Wet‐Dry‐Freeze‐Thaw Cycles [PDF]

Advances in Civil Engineering, 2021
The complex environment in northern China is the main reason for degradation of expansive mudstone below the canals, which resulted in instability and damage of canal slopes. In this study, a serial of laboratory tests was conducted to explore the volume changes and mechanical behaviors of expansive mudstone below the canals in Xinjiang.
Rui Zhu, Ying-hao Huang, Zhu Song, Feng Zhou   +3 more
openaire   +2 more sources