نتایج جستجو برای: saturation moisture

تعداد نتایج: 87902  

2007
Kimberly P. Wickland Jason C. Neff

Black spruce forests are a dominant covertype in the boreal forest region, and they inhabit landscapes that span a wide range of hydrologic and thermal conditions. These forests often have large stores of soil organic carbon. Recent increases in temperature at northern latitudes may be stimulating decomposition rates of this soil carbon. It is unclear, however, how changes in environmental cond...

2006
E. Zehe H. Lee M. Sivapalan

In this study we propose an uspcaling approach to derive time series of (a) REW scale state variables, and (b) effective REW scale soil hydraulic functions to test and parameterise models based on the REW approach. To this end we employed a physically based hydrological model, that represents the typical patterns and structures in the study catchment, and has previously been shown to reproduce ...

2007
L. J. November

We derive 1D steady equilibria for partially saturated downslope flow as a solution to the reposed vadose-zone problem. The equilibria are determined by two free parameters: a mean flow and a downstream saturation. Where there is no downstream saturation, a uniform outflow of constant saturation is obtained, but if an isolated zone of excess downstream saturation exists, the upstream flow speed...

2017
Kjell B. Esser

Conservation agriculture is often presented as being ‘climate smart’ due to anticipated increases in soil moisture. The extent of enhanced water availability in farmers’ fields is, however, poorly documented. This paper presents five data sets describing soil moisture in fields of small-scale conservation and conventional farmers in the Agro-ecological Zone IIa, Zambia. The data include (1) soi...

2013
S. Manfreda L. Brocca T. Moramarco M. Fiorentino

In the present work, we present a new formulation for the estimation of the soil moisture in the root zone based on the measured value of soil moisture at the surface. The method sheds lights on the relationship between surface and root zone soil moisture. It derives from a simplified form of the soil water balance equation and provides a closed form of the relationship between the root zone an...

2015
José Miguel COUCEIRO

This paper reports recent attempts for implementing non-destructive measuring of moisture content in wood based on computed tomography technology. The study focus on an image analysis method that has been already proposed and validated in the literature, but it has not been tested for measuring low moisture content variations below fibre saturation point. The computed tomography method was test...

2009
B. C. Lesieutre M. Zahn S. H. Kang

It is important to monitor the moisture content of transformer oil in a transformer. One parameter of particular interest is the moisture solubility of transformer oil. It has been reported that transformer oils under different conditions have different solubility. Measurements of solubility for four different types of conditioned oil are presented in this paper: fresh Shell Diala AX oil, lab-a...

Journal: :IOP conference series 2022

Abstract The process of washing fruits and vegetables is considered. Stages the vegetables. theory moisture penetration. Experimental studies saturation pollution with moisture. results theoretical experimental are analyzed.

2015
Yulong Zhang Conghe Song Ge Sun Lawrence E. Band Asko Noormets Quanfa Zhang

Light use efficiency (LUE) is a key biophysical parameter characterizing the ability of plants to convert absorbed light to carbohydrate. However, the environmental regulations on LUE, especially moisture stress, are poorly understood, leading to large uncertainties in primary productivity estimated by LUE models. The objective of this study is to investigate the effects of moisture stress on L...

2015
Mladena Lukovic Guang Ye

In concrete repair systems, material properties of the repair material and the interface are greatly influenced by the moisture exchange between the repair material and the substrate. If the substrate is dry, it can absorb water from the repair material and reduce its effective water-to-cement ratio (w/c). This further affects the hydration rate of cement based material. In addition to the chan...

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