Results 61 to 70 of about 97,480 (346)

Experimental study on freeze-thaw damage and seepage characteristics of coal rock at different prefabrication temperatures

open access: yes矿业科学学报, 2023
This experimental study probes into the evolution patterns of fine damage and mechanical and seepage characteristics of coal rocks using the coal rock triaxial servo experiment system by employing three types of pretreatment methods, namely heating ...
Qi Xiaoghan   +5 more
doaj   +1 more source

Simulation procedure of unconfined seepage with an inner seepage face in a heterogeneous field

open access: yes, 2013
An inner seepage face phenomenon is given and a numerical simulation procedure has been developed. It may appear at the interface of two materials when an unconfined seepage flows from a porous media to a coarser porous media with a higher permeability ...
Wu, MX (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.   +3 more
core   +1 more source

Soil conditions and bounds to suction during the installation of caisson foundations in sand [PDF]

open access: yes, 2014
Suction installation of caisson foundations is widely adopted in the oil offshore industry. When such foundations are installed in sand, seepage conditions are known to play a pivotal role in the installation process.
Alani, Amir M.   +4 more
core   +1 more source

Streamline and Isotherm Visual Analysis of Darcy–Forchheimer von Karman Spinning Flow of Maxwell Fluid Over a Stretching Disk With Quadratic Temperature‐Dependent Heat Source

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This research paper provides an extensive study of the effects of Darcy–Forchheimer von‐Karman spinning flow of Maxwell fluid across a stretching disk including the effect of heat generation based on a nonlinear function of temperature. The flow system is influenced by thermal radiations and Arrhenius activation energy.
Ebrahem A. Algehyne   +6 more
wiley   +1 more source

Storage seepage and evaporation: a summary of the results from the measurement of seepage and evaporation losses from 136 on-farm storages across the cotton industry [PDF]

open access: yes, 2011
On-farm storages can be a major source of water loss on cotton farms. Previous studies in the Macintyre valley (Dalton 2001)indicated seepage losses of between 2% and 10% and evaporation losses of between 14% and 40% of all farm water in a year. In order
Wigginton, David
core   +1 more source

Description and Application of A Model of Seepage under A Weir Including Mechanical Clogging

open access: yesJournal of Water and Land Development, 2014
The paper discusses seepage flow under a damming structure (a weir) in view of mechanical clogging in a thin layer at the upstream site. It was assumed that in this layer flow may be treated as one-dimensional (perpendicular to the layer), while ...
Sroka Zbigniew   +2 more
doaj   +1 more source

Soil Solution Analysis With Untargeted GC–MS—A Case Study With Different Lysimeter Types

open access: yesFrontiers in Earth Science, 2021
Surface-sourced organic compounds in infiltrating waters and percolates are transformed during their belowground passage. Biotic and abiotic processes thereby lead to continuously changing chemical environments in subsurface compartments.
Nico Ueberschaar   +7 more
doaj   +1 more source

The 9+ month marathon: How pregnancy may have shaped human endurance capacities

open access: yesThe Anatomical Record, EarlyView.
Abstract Anthropology has long considered the evolution of our uniquely human endurance capacities to be the result of selection upon anatomical and physiological features imposed by the demands of thermoregulation and resource acquisition, particularly during the demands of persistence hunting. Research has focused on the anatomical changes present in
Cara Ocobock
wiley   +1 more source

Modeling the effect of downstream drain geometry on seepage through earth dams

open access: yes, 2021
This research investigates the effect of downstream drain’s geometry on seepage through homogeneous earth dams founded on an impervious foundation. A permeability tank experimental model and SEEP2D numerical model are used in the study. The dam’s failure
Amr R. Refaiy   +3 more
semanticscholar   +1 more source

The fossil record stays silent: Confusions and conundrums for hominin pelvis evolution

open access: yesThe Anatomical Record, EarlyView.
Abstract The evolution of the hominin pelvis is commonly modeled as a series of stages driven largely by the requirements of bipedal locomotion, reproduction, thermoregulation, and pelvic floor muscular support. These patterns are complicated by variation in canal dimensions in relationship with different changes in overall pelvic breadths. To quantify
Helen K. Kurki, Cara M. Wall‐Scheffler
wiley   +1 more source

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