Results 41 to 50 of about 3,836,809 (259)

Experimental study on gas-water relative permeability characteristics of broken coal and rock mass

Meikuang Anquan, 2023
In order to explore the relative permeability characteristics of gas-water in the crushed coal rock mass around the drilling hole of gas extraction, the gas-water coupling permeation test system of the crushed rock mass was used to carry out the gas ...
ZHANG Tianjun, ZHANG Shuo, PANG Mingkun, WANG Xiaojun, LI Yang
doaj   +1 more source

Homogenization in strength and durability analysis of reinforced tooth filling [PDF]

, 2002
An asymptotic homogenization procedure is employed to obtain effective elastic properties of the composite tooth filling, a homogenized macro– stress field and a first approximation to the micro-stress field, from properties of the components and applied
Mikhailov, SE, Orlik, J
core  

Regional Flow Simulation in Fractured Aquifers Using Stress-Dependent Parameters [PDF]

, 2011
A model function relating effective stress to fracture permeability is developed from Hooke's law, implemented in the tensorial form of Darcy's law, and used to evaluate discharge rates and pressure distributions at regional scales.
Abaqus., Berkowitz, Brown, Cappa, COMSOL Multiphysics., Durham, Ferronato, Gangi, Glover, Hopkins, Király, Király, Li, Lombardi, Lombardi, Londe, Mayeur, Murdoch, Neuman, Rutqvist, Rutqvist, Schweisinger, Tsang, Walsh, Zace Service Ltd., Zangerl   +25 more
core   +3 more sources

Experimental study on overburden porosity and permeability of coal reservoir in Tucheng syncline of Western Guizhou

Meikuang Anquan, 2023
In order to study the characteristics of porosity, permeability and stress sensitivity of middle rank coal reservoir in Tucheng syncline and their influence on coalbed methane exploitation, coal core samples of coal seams 1#, 3#, 5#, 15#, 17#, 291# and ...
TANG Daixue, LOU Yi, FENG Yunfu
doaj   +1 more source

Ferromagnetic Wires Composite Media with Tunable Scattering Spectra at Microwaves

, 2006
We demonstrate composite media with ferromagnetic wires that exhibit a frequency region at the microwave regime with scattering spectra strongly dependent on an external magnetic field or stress.
A. P. Zhukov, C. Garcia, D. Hull, D. P. Makhnovskiy, D. P. Makhnovskiy, G. H. Bryant, J. Gonzalez, J. M. Ziman, L. V. Panina, L. V. Panina, M. Born, S. I. Sandacci, T. K. Chang   +12 more
core   +1 more source

Oneiric stress and safety and security at work: the discovery of a new universal symbol [PDF]

, 2015
Cox and Griffiths define as psychosocial risks at work “those aspects of the planning, organization and management of work, which, along with their environmental and social contexts, may affect mental and physical health of the employees, directly or ...
Accettura, Antonella, Anghileri, A., Aufiero, M., Borghini, F., Briccola, A., Canevaro, G., Catelli, N., Cavalleri, M., Cusani, Roberto, De Lucia, E., Garzia, Fabio, Lombardi, Mara, Luraschi, P., Paddeu, M., Rossi, Giuliano   +14 more
core   +1 more source

Study on superposition relation of coal deformation under adsorption

Meikuang Anquan, 2022
In order to verify that the deformation of coal body is the superposition of coal matrix adsorption expansion (desorption shrinkage) deformation and effective stress deformation, based on the mechanism of adsorption swelling deformation, the verification
JIA Lifeng, DONG Qing, LIANG Bing, SUN Weiji
doaj   +1 more source

Revisiting the thermodynamics of hardening plasticity for unsaturated soils [PDF]

, 2010
A thermodynamically consistent extension of the constitutive equations of saturated soils to unsaturated conditions is often worked out through the use a unique 'effective' interstitial pressure, accounting equivalently for the pressures of the ...
Alonso, Bear, Bear, Bishop, Bishop, Bolzon, Chateau, Collins, Coussy, Coussy, Coussy, Coussy, Coussy, Coussy, Cui, de Gennes, Fredlund, Gallipoli, Gens, Gray, Halphen, Hassanizadeh, Houlsby, Houlsby, Hutter, Jean Vaunat, Jean-Michel Pereira, Jennings, Khalili, Lemaitre, Lewis, Lewis, Li, Loret, Luong, Matyas, Murad, Olivier Coussy, Pereira, Roscoe, Roscoe, Schofield, Sheng, Sun, Sun, Vaunat, Wheeler, Wheeler   +47 more
core   +5 more sources

Influence of Ni content on hot tearing tendency of Al-5.6Zn-2.5Mg-1.6Cu alloys

Cailiao gongcheng
A combination of numerical simulation and experimental methods was used to study the influence of Ni content on the hot tearing tendency of Al-5.6Zn-2.5Mg-1.6Cu-xNi （x=0%，0.1%，0.3%，0.5%，mass fraction， the same below） alloys.
XIA Can, XU Shichun, YANG Jixi, LUO Hongmei, XU Zhaoming, WU Fan, LI Zaijiu   +6 more
doaj   +1 more source

Evolution mechanism of shale microfracture apparent permeability considering dynamic slippage

Meitan kexue jishu, 2023
In order to study the evolution mechanism of microfracture apparent permeability under the effect of effective stress, gas adsorption and slip effect during shale-gas extraction, the fractal theory was used to characterize the total gas flow in ...
Yunna DING, Bobo LI, Qiaoyun CHENG, Shulei DUAN, Haosheng SONG   +4 more
doaj   +1 more source