Results 11 to 20 of about 108,480 (266)

Prediction of permeability coefficient of unsaturated lime-improved loess

open access: yesYantu gongcheng xuebao, 2020
In view of the fact that most loess in the loess regions is in an unsaturated state, lime is used to improve the unsaturated loess to solve the problem of permeability of unsaturated loess.
HU Zai-qiang , LIANG Zhi-chao , GUO -Jing , FENG -Zhe , WANG -Kai , SHE Hai-cheng
doaj   +1 more source

Permeability coefficients and vapour pressure determination for fragrance materials [PDF]

open access: yesInternational Journal of Cosmetic Science, 2021
AbstractObjectiveThis study aims to correlate new experimental data relevant to the description of the combined evaporation/permeation process of a perfume applied onto the skin.MethodsThe vapour pressure data were measured by thermogravimetric analysis (TG‐DTA).
Almeida, Rafael N.   +5 more
openaire   +4 more sources

Effect of water head on the permeability of foam-conditioned sands: Experimental and analytical investigation

open access: yesSoils and Foundations, 2023
The water permeability of conditioned soils is one of the most essential properties for Earth Pressure Balance (EPB) tunnelling in coarse-grained soils.
Shuying Wang   +4 more
doaj   +1 more source

Prediction of coefficient of permeability of unsaturated loess with different seepage durations

open access: yesYantu gongcheng xuebao, 2018
The coefficient of permeability of unsaturated loess is very important to seepage calculation and slope instability analysis of loess. Using the direct method to test the coefficient of permeability of unsaturated loess is time-consuming and more ...
CHEN Wen-wu 1, 2, LIU Wei 1, 2, WANG Juan 1, 2, SUN Guan-ping 1, 2, WU Wei-jiang 3, HOU Xiao-qiang 4
doaj   +1 more source

Gas permeability of intact Q3 loess under isotropic stresses

open access: yesYantu gongcheng xuebao, 2017
The tests are performed to study the gas permeability of unsaturated intact Q3 loess with various water contents under different isotropic stresses using the improved triaxial gas permeability equipment.
CHEN Cun-li 1, 2, ZHANG Deng-fei 1, 2, ZHANG Jie 3, CHEN Hui 1, YANG Fan 1, WU Kang 1
doaj   +1 more source

Permeability coefficient investigation based on fractal characteristics of porous media soil

open access: yesShuili Shuiyun Gongcheng Xuebao, 2022
Permeability coefficient of soil is extremely important to dike and dam engineering. Scale-invariant space of seepage failure testing soils were statistically analyzed by multifractal dimensions, which shows that fine particle content is the major factor
WANG Yu   +3 more
doaj   +1 more source

Empirical formula for permeability coefficient of coarse grained soil based on gradation equation and its verification

open access: yesYantu gongcheng xuebao, 2020
The coarse-grained soil is widely used in earth-rock dams and road projects. Its seepage characteristics are related to the stability and safety of the projects.
BAO Meng-die 1, 2, ZHU Jun-gao 1, 2, WU Er-lu 1, 2, WANG Long 1, 2, CHEN Ge 1, 2
doaj   +1 more source

A Physical Interpretation of the Phenomenological Coefficients of Membrane Permeability [PDF]

open access: yesThe Journal of General Physiology, 1961
A "translation" of the phenomenological permeability coefficients into friction and distribution coefficients amenable to physical interpretation is presented. Expressions are obtained for the solute permeability coefficient ω and the reflection coefficient σ for both non-electrolytic and electrolytic permeants. An analysis of the coefficients is given
O, KEDEM, A, KATCHALSKY
openaire   +2 more sources

Assessment of gas permeability coefficient of porous materials

open access: yesJournal of Sustainable Mining, 2017
The results of experimental research upon the assessment of gas permeability of porous materials with respect to the gas flow. The conducted research applied to natural materials with an anisotropic gap-porous structure and - for comparative purposes ...
Grzegorz Wałowski
doaj   +1 more source

Effects of Velocity and Permeability on Tracer Dispersion in Porous Media

open access: yesApplied Sciences, 2021
During micro-scale tracer flow in porous media, the permeability and fluid velocity significantly affect the fluid dispersion properties of the media. However, the relationships between the dispersion coefficient, permeability, and fluid velocity in core
Yulong Yang   +9 more
doaj   +1 more source

Home - About - Disclaimer - Privacy