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Water retention

IMPACT OF DIRECT SEEDING ON SOIL WATER RETENTION IN SEMI-ARID AREA (REGION HIGHLANDS OF WESTERN ALGERIA)

IMPACT OF DIRECT SEEDING ON SOIL WATER RETENTION IN SEMI-ARID AREA (REGION HIGHLANDS OF WESTERN ALGERIA)

... by water and wind erosion that undermine agricultural ...the water retention capacity is a key input for sound water management, especially in semi-arid environment where the reduction of this ...

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Water retention behaviour of compacted bentonites: experimental observations and constitutive model

Water retention behaviour of compacted bentonites: experimental observations and constitutive model

... the water retention curves obtained under constant volume and free swelling conditions, expressed in terms of water ...the water content appears to be relatively independent of the volume ...

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Development of a model to predict the water retention curve using basic geotechnical properties

Development of a model to predict the water retention curve using basic geotechnical properties

... of water retained in a soil by capillary and adhesion forces depends on many factors, namely: shape, size and distribution of pore space; mineralogy and surface activity of solid grain particles; chemical ...

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Novel organic−inorganic hybrids with increased water retention for elevated temperature proton exchange membrane application

Novel organic−inorganic hybrids with increased water retention for elevated temperature proton exchange membrane application

... the water retention of the modified membranes has significantly increased compared with the unmodified Nafion ...the water contained within the ...interfacial water, which is only weakly bound ...

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Accounting for evolving pore size distribution in water retention models for compacted clays

Accounting for evolving pore size distribution in water retention models for compacted clays

... The experimental technique most often used to gather quantitative information on the fabric of porous media with interconnected porosity is the mercury intrusion porosimetry (MIP) (see, e.g. the works of Delage and ...

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A capillary water retention effect to improve medium-temperature fuel cell performance

A capillary water retention effect to improve medium-temperature fuel cell performance

... Small hydrophilic domain sizes (< 5 nm) improve fuel cell performance due to capillary water retention effect at 120 o C, 35%RH.. Graphical Abstract (for review)..[r] ...

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Water retention curve and hydraulic conductivity function of highly compressible materials

Water retention curve and hydraulic conductivity function of highly compressible materials

... the water retention curve (WRC) of ...pressure, water inflow and water ...increased, water is expelled from the sample and collected in burette ...equivalent water volume ...

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A water retention model for compacted bentonites

A water retention model for compacted bentonites

... 425 predictions. It is worth noting that the parameters used for this simulation are the ones calibrated on Villar (2000) and Lloret et al. (2005) data and no dedicated calibration has been performed. Although developed ...

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A water retention model for compacted clayey soils

A water retention model for compacted clayey soils

... a water retention model accounting for the evolution of the aggregated structure of compacted clays along generalized hydromechanical stress ...the retention mechanisms of both microstructural and ...

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Evaluation of the water retention curve of Abidjan Quaternary aquifer

Evaluation of the water retention curve of Abidjan Quaternary aquifer

... words: water retention curve, quaternary aquifer, capillary rise of water INTRODUCTION L’aquifère d’Abidjan abrite une partie de la ville d’Abidjan où beaucoup d’infrastructures sont ...

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Transposability and evaluation of pedotranfer functions for predicting properties of water retention on soils of low chelif. Algeria

Transposability and evaluation of pedotranfer functions for predicting properties of water retention on soils of low chelif. Algeria

... 5 10 15 30 60 Frequency Organic Matter ( g.Kg -1 )  research has focused on the discussion of the ability of PTF to estimate more or less accurately the water content measured for the sample that have relatively ...

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Evaluating hydrodynamic parameters accounting for water retention hysteresis in a large sand column using surface GPR

Evaluating hydrodynamic parameters accounting for water retention hysteresis in a large sand column using surface GPR

... ε γ b = θε γ w + (1 − φ)ε γ s + (φ − θ)ε γ a , (10) where ε w , ε s and ε a are respectively the dielectric permittivity of water, silica and air, φ 212 the porosity and θ the volumetric water content. γ is ...

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Comparison of different capillary models to predict the hydraulic conductivity from the water retention curve

Comparison of different capillary models to predict the hydraulic conductivity from the water retention curve

... L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignemen[r] ...

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2019 — Finite and discrete element modelling of internal erosion in water retention structures

2019 — Finite and discrete element modelling of internal erosion in water retention structures

... YADE would be used to model the porous media expansion based on the drag force values calculated from the COMSOL model. • Compare some erosion modelling results with the continuum-base[r] ...

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Securitization and Optimal Retention under Moral Hazard

Securitization and Optimal Retention under Moral Hazard

... European Parliament, "Report on the proposal for a directive of the European Parliament and of the Council amending Directives 2006/48/EC and 2006/49/EC," Session document A6-0139/2009, March, 2009. Fender, I., ...

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THE EFFECT OF LEAF ORIENTATION ON SPRAY RETENTION ON BLACKGRASS

THE EFFECT OF LEAF ORIENTATION ON SPRAY RETENTION ON BLACKGRASS

... FIGURE 1: Drop impact phase diagram on horizontal superhydrophobic surface for a water drop (from Rioboo et al., 2008), depending on drop velocity and wetting regimes. Up to now, the effect of the drop impact ...

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A new retention index system for LC-MS

A new retention index system for LC-MS

... • Mobile phases: 0.25 mL/min CH 3 CN/H 2 O + 50 mM HCOOH/2 mM HCOONH 4 (pH 3). Different pHs and CH 3 OH also tested. • Curve fitting: SRS1 SoftwareLLC, http://www.srs1software.com (Excel macro) Figure 1. ...

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Intron retention-dependent gene regulation in Cryptococcus neoformans

Intron retention-dependent gene regulation in Cryptococcus neoformans

... Nevertheless, we identified 98 introns in ORFs for which retention was up-regulated in the upf1Δ strains (Table S7). We confirmed the effect of the UPF1 mutation for some IR events using semi-quantitative RT-PCR. ...

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An Assessment of the Current Data Affecting Tritium Retention and its Use to Project Towards T Retention in ITER

An Assessment of the Current Data Affecting Tritium Retention and its Use to Project Towards T Retention in ITER

... of retention in W based on two currently available hydrogen transport ...wall retention to one order of magnitude higher numbers of discharges while the divertor retention stays ...of ...

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Intron retention enhances gene regulatory complexity in vertebrates

Intron retention enhances gene regulatory complexity in vertebrates

... To determine whether retained in- trons, acting as gene expression control elements, preserve complexity in vertebrate species, we compared the fractions of intron-retaining genes in eac[r] ...

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