Results 61 to 70 of about 1,834,727 (294)

Estimating Unsaturated Hydraulic Conductivity in Unsaturated Soil Using Soil Moisture Sensors

open access: yesInternational Journal of Integrated Engineering, 2023
Unsaturated hydraulic conductivity (K) is a measurement of soil water-retaining ability in unsaturated soil. The unsaturated hydraulic properties are necessary to predict the movement of water in unsaturated soil. The current study aims to create an alternative experimental device to estimate theKusing soil moisturesensors. The experimental
Ong Sin Tian   +4 more
openaire   +1 more source

Study on vibration isolation performance of wave impeding block in unsaturated soil foundation under an underground dynamic load

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2023
Based on single-phase medium theory and unsaturated porous medium theory, the vibration isolation effect of setting a single-phase solid wave impeding block (WIB) in the unsaturated soil foundation under an underground dynamic load is investigated. Using
Meng Zhang, Qiang Ma
doaj   +1 more source

A generalized isogeometric boundary element method for the uncertain analysis of infinite domain two-dimensional acoustic problems

open access: yesFrontiers in Physics, 2023
The key aim of this paper is to provide a new nth generalized order perturbed isogeometric fast multistage technique of boundary elements to compute the propagation of time harmonics in an infinite region.
Yan Yang   +5 more
doaj   +1 more source

Comparative Profiles of Lipophilic Nutrients and In Vitro Antioxidant Activity in Commercial Arabica and Robusta Green Coffee Beans

open access: yesJournal of the American Oil Chemists' Society, EarlyView.
Integrated compositional profiling of ten commercial green coffee lots showed higher mean total phenolic content, DPPH radical‐scavenging activity, β‐carotene, and total phytosterols in Robusta‐labeled lots, whereas Arabica‐labeled lots showed higher mean total tocopherols and total measured fatty acids.
Muyny Chhom   +2 more
wiley   +1 more source

Buoyant Advection of Gases in Unsaturated Soil [PDF]

open access: yesJournal of Environmental Engineering, 1994
In unsaturated soil, methane and volatile organic compounds can significantly alter the density of soil gas and induce buoyant gas flow. A series of laboratory experiments was conducted in a two-dimensional, homogeneous sand pack with gas permeabilities ranging from 110 to 3,000 darcy. Pure methane gas was injected horizontally into the sand and steady-
Gregory E, Seely   +2 more
openaire   +2 more sources

Stability of 3D Tunnel Faces in Inclined Layered Soils Under Steady-State Unsaturated Seepage Based on Grey Relational Analysis

open access: yesApplied Sciences
This paper aims to estimate the stability of tunnel faces in inclined layered soils under steady unsaturated seepage conditions, comparing the degree of correlation between the stability of the tunnel face and the influence of three types of parameters ...
Huanjiang Wu   +3 more
doaj   +1 more source

Triple-Shear Unified Solution for Bearing Capacity of Unsaturated Soft Soil Foundations with Hard Crust

open access: yesGeofluids, 2022
The bearing capacity of unsaturated soft soil foundations is affected by natural or artificial hard crust, due to the stress diffusion and closure effect.
Xueye Cao   +4 more
doaj   +1 more source

Unveiling opportunities and challenges for a circular approach to macaúba biorefining: a technological roadmap

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract The macaúba fruit, native to tropical and subtropical regions, has received considerable attention in recent years as a promising raw material for the production of advanced biofuels in Brazil. However, the development of large‐scale biomass requires overcoming significant challenges, such as designing circular biorefineries.
Fábio de A. Oroski   +3 more
wiley   +1 more source

Total and Matric Suction in Unsaturated Soil with the Existence of Different Salts Content [PDF]

open access: yesEngineering and Technology Journal, 2013
Soils located above the groundwater table are generally unsaturated and exhibit negative pore-water pressures. A soil-water characteristic curve (SWCC) that relates the water content of a soil to matric suction is an important relationship for the ...
Mohammed Y. Fattah   +3 more
doaj   +1 more source

Role of unsaturated permeability function in seepage analyses

open access: yes, 2022
Unsaturated permeability function is the key parameter in seepage analyses. The unsaturated permeability function is often estimated from soil-water characteristic curve (SWCC) by means of estimation models. However, different estimation models result in
Leong, EC   +2 more
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