Soil porosity (ϕ) is of a great deal for environmental studies due to the fact that water infiltrates and suffers redistribution in the soil pore space. Many physical and biochemical processes related to environmental quality occur in the soil porous system. Representative determinations of ϕ are necessary due to the importance of this physical property in several fields of natural sciences. In...

Sequestration and diffusion of three polycyclic aromatic hydrocarbons (PAHs) in seven Chinese soils were investigated for up to 200 days in sterile soil microcosms as functions of soil property and aging time. The aging of the PAHs, assessed using a mild extractant that removes primarily the labile fraction, showed a biphasic behavior. The rapid diffusion from labile to nonlabile domains was ma...

Since WWII acoustic echo-location method utilized in sonars has been one of the primary approaches for detecting underwater mines. However, earlier attempts to replicate sonar approach and its modifications for detection of landmines were not successful. For example, Caulfield, 1989, House & Pape, 1994, Don & Rogers, 1994 suggested the use of acoustic impulse reflection from soil. A buried obje...

Spatially variable soil properties influence the performance of soil water content monitoring sensors. The objectives of this research were to: (i) study the spatial variability of bulk density (ρ(b)), total porosity (θ(t)), clay content (CC), electrical conductivity (EC), and pH in the upper Mākaha Valley watershed soils; (ii) explore the effect of variations in ρ(b) and θ(t) on soil water con...

he fundamental arrangement of granular behavior is important to know about the soil stability and influence the design of structural foundations. The structural stability is particularly useful in earthquake events. Therefore, to work on measuring the arrangement and orientation of an assemblage of granular particle is essential. In this paper, we evaluate the porosity of the given sand images ...

Current databases of soil hydraulic properties (SHPs) have typically been used to develop pedotransfer functions (PTFs) estimate water retention [?(h)] assuming a unimodal pore-size distribution. However, natural soils often show the presence bimodal multimodal distributions. Here, we three widely spread for PTF development: UNsaturated SOil DAtabase (UNSODA) 2.0, Vereecken, and European hydrop...

soil hydraulic properties such as saturated and unsaturated hydraulic conductivity play an important role in environmental research. since direct measurement of these soil hydraulic properties is time-consuming and costly, indirect methods such as pedotransfer functions and artificial neural networks (ann) were developed based on readily available parameters. in this study, the use of ann to pr...

to reduce peat while increasing the water holding capacity (whc) of casing soil in button mushroom production an experiment was conducted in 2006 with three hydrogel treatments of: t0= casing soil with no hydrogel, as control, t1= casing soil + 10% hydrogel (v/v), and t2= casing soil + 20% hydrogel (v/v) with three replicates in a completely randomized design. results indicated that treatment 1...

Soil compaction may affect N mineralization and the subsequent fate of N in agroecosystems. Laboratory incubation and field experiments were conducted to determine the effects of surface soil compaction on soil N mineralization in a claypan soil amended with poultry litter (i.e., Turkey excrement mixed with pine shavings as bedding). In a laboratory study, soil from the surface horizon of a Mex...