نتایج جستجو برای: saturated water content

تعداد نتایج: 951018  

ژورنال: علوم آب و خاک 2015
حجتی, سعید , صیاد, غلامعباس , عنایتی ضمیر, نعیمه , فرزادیان, میثم ,

One of the major problems associated with petroleum-contaminated soils is water repellency, especially in arid regions of the world. Hence, a variety of methods such as clay addition has been proposed to improve the hydrophobicity of soils. This research was conducted to evaluate the influence of zeolite application on water repellency of an oil-contaminated soil from Khuzestan Province under v...

Journal: :Materials 2016
Qiao Lyu Pathegama Gamage Ranjith Xinping Long Bin Ji

The effects of CO₂-water-rock interactions on the mechanical properties of shale are essential for estimating the possibility of sequestrating CO₂ in shale reservoirs. In this study, uniaxial compressive strength (UCS) tests together with an acoustic emission (AE) system and SEM and EDS analysis were performed to investigate the mechanical properties and microstructural changes of black shales ...

2006
C. Russo G. Preziuso

The aim was to verify organic system effect on carcass and meat quality of beefs. Twelve carcasses derived from Limousine x Red Pied beef, reared in the San Rossore Park (Tuscany) and slaughtered at 24 months of age, were used. After 24h post-mortem, carcasses were evaluated according to UE classification grid: on right half carcasses several measurements were taken and carcass compacteness was...

2004
Andreas Güntner Jan Seibert Stefan Uhlenbrook

[1] A key component to understanding and predicting water fluxes and water quality in river basins is the spatial distribution of water-saturated areas. There is limited knowledge on spatial patterns of saturated areas, their relation to landscape characteristics and processes, and the ability of hydrological models to represent the observed spatial patterns, particularly at the large scales mo...

علی‌اصغرزاده, ناصر, اصغری, شکراله , ساریخانی, محمد‌رضا , سمائی, فریبا ,

In order to investigate the effects of mycorrhizal symbiosis on some soil hydraulic properties and nutrients uptake by spring barley, a greenhouse experiment was conducted based on a completely randomized blocks design with four replications, using two mycorrhizl fungi including Glomus intraradices (GI) and Glomus etunicatum (GE) and non-mycorrhizal (control) treatments, in an alkaline coarse-t...

1999
David G. Jewett Bruce E. Logan Robert G. Arnold Roger C. Bales

Porous media column experiments were used to investigate Pseudomonas fluorescens strain P17 transport as a function of water content and the influences of the solid–liquid and gas–liquid interfaces. Retention of radiolabeled P17 in washed quartz sand was evaluated at 100, 84, and 46% water saturation. At the completion of each experiment, the porous medium was extruded and sampled directly for ...

Journal: :Journal of environmental quality 2008
C Kent Keller Caroline N Butcher Jeffrey L Smith Richelle M Allen-King

Topographically heterogeneous agricultural landscapes can complicate and accelerate agrochemical contamination of streams due to rapid transport of water and chemicals to poorly drained lower-landscape positions and shallow ground water. In the semiarid Palouse region, large parts of these landscapes have been tile drained to enhance crop yield. From 2000-2004 we monitored the discharge of a ti...

Journal: :Environmental Earth Sciences 2022

The moisture content of rock significantly influences its time-dependent deformation behavior. This paper studied the creep behavior sandstone under saturated and dry conditions different driving stress ratio (not same level).Their impacts on time-to-failure (TTF) were also investigated. results show that an identical ratio, specimens' strain steady-state rate are relatively higher than those o...

Damask rose is one of the oldest and most valuable rose varieties that to some extent, tolerates water deficiency. However, the selection and identification of genotypes that are more tolerant to drought stress will be effective in development of cultivation of the plant. In this case, an experiment was performed under in vitro conditions using polyethylene glycol at five levels (0, 25, 50, 75 ...

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