نتایج جستجو برای: saturation moisture

تعداد نتایج: 87902  

Journal: :Remote Sensing 2014
Ari Posner Konstantine Georgakakos Eylon Shamir

Flash Flood Guidance consists of indices that estimate the amount of rain of a certain duration that is needed over a given small basin in order to cause minor flooding. Backwater catchment inundation from swollen rivers or regional groundwater inputs are not significant over the spatial and temporal scales for the majority of upland flash flood prone basins, as such, these effects are not cons...

Journal: :Geosciences 2023

The paper presents a simple yet efficient way to track the void ratio, water content, and degree of saturation swelling material during saturation. research aimed quantitatively describe drying wetting processes material, which should enable their better understanding easier modelling. Two identical tall samples, named “twins”, were formed by consolidating paste prepared from in montmorillonite...

Journal: :Bioresource technology 2009
H K Ahn T J Sauer T L Richard T D Glanville

Thermal properties of compost bulking materials affect temperature and biodegradation during the composting process. Well determined thermal properties of compost feedstocks will therefore contribute to practical thermodynamic approaches. Thermal conductivity, thermal diffusivity, and volumetric heat capacity of 12 compost bulking materials were determined in this study. Thermal properties were...

محمدرضا نیشابوری, , حسین رضائی, , علیرضا سپاسخواه, ,

Hydraulic coefficients of a porous media such as hydraulic conductivity K(θ) and diffusivity D(θ) have a controlling role in the evaluation of groundwater flow and pollutant transport behavior. Therefore, successful porous media flow evaluation depends on the accurate determination of its hydraulic coefficients. But it is hard and time consuming to measure. Values for these coefficients accurat...

2014
Yongsheng Yang Chongfeng Bu Xingmin Mu Hongbo Shao Kankan Zhang

To better understand the effects of biological soil crusts (BSCs) on soil moisture and wind erosion and study the necessity and feasibility of disturbance of BSCs in the Mu Us sandland, the effects of four treatments, including moss-dominated crusts alone, Artemisia ordosica alone, bare sand, and Artemisia ordosica combined with moss-dominated crusts, on rainwater infiltration, soil moisture, a...

2006
Pratik N Sheth B. V. Babu

Biomass, mainly in the form of wood, is the oldest form of energy used by humans. Gasification is a process of conversion of solid carbonaceous fuel into combustible gas by partial combustion. In the present study, a model developed by us in our earlier study is used for predicting the steady-state composition and rate of reaction profiles for the reduction zone of the downdraft biomass gasifie...

Journal: :Indoor air 2007
D Mudarri W J Fisk

UNLABELLED The public health risk and economic impact of dampness and mold exposures was assessed using current asthma as a health endpoint. Individual risk of current asthma from exposure to dampness and mold in homes from W.J. Fisk, Q. Lei-Gomez & M.J. Mendell [(2007) Indoor Air, [corrected] 17, 284-296], and [corrected] asthma risks calculated from additional studies that reported the preval...

2009
RICHARD T. WETHERALD

This paper examines hydrological variability and its changes in two different versions of a coupled ocean– atmosphere general circulation model developed at the National Oceanic and Atmospheric Administration/ Geophysical Fluid Dynamics Laboratory and forced with estimates of future increases of greenhouse gas and aerosol concentrations. This paper is the second part, documenting potential chan...

ژورنال: علوم آب و خاک 2018

In this study, the values of moisture and soil temperature were estimated at different depths and times under unsteady conditions by solving the Richards’ equation in an explicit finite difference method provided in Visual Studio C#. For the estimation of soil hydraulic parameters, including av and nv (coefficients of van Genuchten’s equation) and Ks (saturated hydraulic conductivit...

ژورنال: علوم آب و خاک 2004
محمدرضا نیشابوری, , حسین رضائی, , علیرضا سپاسخواه, ,

Hydraulic coefficients of a porous media such as hydraulic conductivity K(θ) and diffusivity D(θ) have a controlling role in the evaluation of groundwater flow and pollutant transport behavior. Therefore, successful porous media flow evaluation depends on the accurate determination of its hydraulic coefficients. But it is hard and time consuming to measure. Values for these coefficients accurat...

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