Results 31 to 40 of about 922,701 (227)
Estimation of hydraulic conductivity of unsaturated soils under entire suction range
Yantu gongcheng xuebao, 2022 The hydraulic conductivity of unsaturated soils controls their water flow. Most numerical softwares adopt the hydraulic conductivity function (HCF) as the input parameter to simulate the water flow in unsaturated soils.
ZHAI Qian 1, 2, ZHU Yi-yao 1, 2, YE Wei-min 3, DU Yan-jun 4, DAI Guo-liang 1, 2, ZHAO Xue-liang 1, 2
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Development and Preliminary Evaluation of an Improvised Tension Disc Permeameter for Determining Unsaturated Soil Hydraulic Properties [PDF]
Philippine E-Journal for Applied Research and Development, 2016 An improvised tension disc permeameter for determining the unsaturated hydraulic properties of soil was fabricated using low-cost and locally-available materials.
Maurice A. Duka +5 more
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Characterization of unsaturated hydraulic conductivity at the Hanford Site [PDF]
, 1988 This report details some recent field measurements and compares predicted and measured values of hydraulic conductivities for three locations at the Hanford Site. Measurements from small (6-cm-dia) /open quotes/point/close quotes/ and large (2-m by 2-m) /open quotes/plot/close quotes/ areas utilized inflitration and drainage techniques to obtain in ...
Rockhold, M. L. +2 more
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Animal Research and One Health, EarlyView.ABSTRACT This study explored fasting‐induced physiological remodeling effects on meat quality in aged laying hens. Fasting for 15 days (F15) significantly reduced abdominal fat, intermuscular fat width, subcutaneous fat thickness, and liver index versus pre‐fasting (F0) (p < 0.05), which recovered post‐refeeding.
Xiaoran Zhang +8 more
wiley +1 more source
In situ mixing of organic matter decreases hydraulic conductivity of denitrification walls in sand aquifers [PDF]
, 2008 In a previous study, a denitrification wall was constructed in a sand aquifer using sawdust as the carbon substrate. Ground water bypassed around this sawdust wall due to reduced hydraulic conductivity.
Schipper, Louis A. +3 more
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Journal of Engineering, 2008 Since no in situ studies exist for determining unsaturated hydraulic characteristics of Iraqi soils during internal drainage under no evaporation conditions, a field study was conducted on a silty clay loam soil to determine unsaturated hydraulic ...
سموم برغوث سالم +1 more
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Deep Underground Science and Engineering, EarlyView.This study proposes an exponentially‐constrained Gaussian mixture model (EcGMM) to quantify vertical fracture heterogeneity in stratified roof strata. The model integrates a piecewise exponential decay term capturing global stress dissipation with Gaussian components representing localized fracture intensification at lithological interfaces.
Huiqing Yuan +5 more
wiley +1 more source
Unsaturated Hydraulic Conductivity for Evaporation in Heterogeneous Soils [PDF]
, 2011 Simulations of vadose zone moisture flow and contaminant transport typically use closedform soil hydraulic properties (i.e., unsaturated hydraulic conductivity and soil water retention characteristics). Understanding large-scale vadose zone hydrological processes requires a solid approach to characterizing the large degree of heterogeneity of hydraulic
Dongmin Sun, Jianting Zhu
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Energy Science &Engineering, EarlyView.This study systematically investigates the fracture development mechanisms of water‐isolating soil layers under the coupled effects of repeated mining and groundwater seepage during the downward mining of shallow‐buried coal seams. The findings provide a theoretical basis for evaluating stratum stability and preventing roof water inrush.
Tao Yang +7 more
wiley +1 more source
علوم آب و خاک, 2021 The present study is investigated the earth dam stability during drawdown based on both numerical and experimental aspects. To validate the numerical model, a model was performed experimentally.
M. Pakmanesh +4 more
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