نتایج جستجو برای: linear relationships between permeability

تعداد نتایج: 3304594  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی دکتر علی شریعتی 1389

the purpose of this study is to investigate the relationships between teachers’ immediacy behaviors and iranian students’ willingness to talk in english classes. analysis of the results from willingness to talk scale represents a relatively high level of willingness to talk in english classrooms among iranian language learners. the total mean score of students’ willingness to talk was 66.3 ou...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2011
Ali Tamayol Majid Bahrami

In this study, the transverse permeability of fibrous porous media is studied both experimentally and theoretically. A scale analysis technique is employed for determining the transverse permeability of various fibrous matrices including square, staggered, and hexagonal arrangements of unidirectionally aligned fibers, as well as simple two-directional mats and simple cubic structures. In the pr...

2015
Takashi Fujii Shin-ichi Uehara Masao Sorai

During carbon dioxide (CO2) injection process, overpressure within targeted reservoirs might occur because of changes in stress related to the CO2 pressure, which could lead to deformation of the surrounding rocks, including caprocks which are geological formations with low permeability overlying a CO2 storage reservoir. The understanding for impact of effective pressure (i.e., the difference b...

2018
F Pérez-Ràfols P Wall A Almqvist

In this paper, we study flow through thin porous media as in, e.g. seals or fractures. It is often useful to know the permeability of such systems. In the context of incompressible and iso-viscous fluids, the permeability is the constant of proportionality relating the total flow through the media to the pressure drop. In this work, we show that it is also relevant to define a constant permeabi...

2008
F. Yassine E. Chaker K. Ahmed K. B. Ammar S. Abdelaziz

Three-Dimensional electromagnetic numerical modelling is used in inversion problems, commonly for determining the distribution of electrical parameters such as conductivity or permeability. This type of problems is a non-linear and ill-conditioned problem needs two phase resolutions: the forward and the inverse phase. In this paper we describe a numerical approach to image the electrical permea...

Journal: :Journal of Sustainable Architecture and Civil Engineering 2022

In the light of ongoing outbreak epidemics, Iraqi government ordered temporary closure university buildings and explicit compliance with social distancing, fearing increased infection rates among large numbers students. This closure, fear infection, acted as an obstacle for users educational spaces. To overcome this challenge, study aimed to investigate impact space design on effectiveness dist...

The purpose of this study is to create an index to measure the resilience of Iranian banks and to investigate the impact of income diversification and some economic, banking and industrial factors on it. The selected sample includes Iranian banks in the years 2007 to 2020. Variables of each of the sub-index Camels Standard were chosen and after compounding them with the principal components Ana...

Ahmadi, S., Askary Sary , A., Jamili, Sh., Roomiani, L.,

Concentrations of both essential (Zn and Cu) and non- essential (As, Cd, Pb, Hg, Ni) metals were measured in the organs (mantle, branchial hearts, gill and digestive gland) of Sepia pharaonis captured in the coastal waters of Bushehr Province in the Persian Gulf (Iran). The relationships between S. pharaonis size (mantle length) and metal concentrations in tissues were investigated by linear re...

2018
Kaitlyn M Harper Maxine Mutasa Andrew J Prendergast Jean Humphrey Amee R Manges

BACKGROUND Environmental enteric dysfunction (EED) is commonly defined as an acquired subclinical disorder of the small intestine, characterized by villous atrophy and crypt hyperplasia. EED has been proposed to underlie stunted growth among children in developing countries. A collection of biomarkers, organized into distinct domains, has been used to measure different aspects of EED. Here, we ...

Journal: :Journal of Fluid Mechanics 2023

The prediction of trajectories buoyancy-driven objects immersed in a viscous fluid is key problem dynamics. Simple-shaped objects, such as disks, present great variety trajectories, ranging from zig-zag to tumbling and chaotic motions. Yet, similar studies are lacking when the object permeable. We perform linear stability analysis steady vertical path thin permeable disk, whose flow through mic...

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