Matrix gas flow through “impermeable” rocks – shales and tight sandstone [PDF]
Solid Earth, 2022 The effective pressure sensitivity of gas flow through two shales (Bowland and Haynesville shales) and a tight gas sandstone (Pennant sandstone) was measured over the typical range of reservoir pressure conditions.
E. Rutter +3 more
doaj +1 more source
Drop deformation in stokes flow through converging channels [PDF]
, 2009 This work presents an application of a direct BEM formulation for drop deformation and interaction in Stokes flows through converging channels.
Wrobel, LC, Das Bhaumik, CL, Soares, D
core +4 more sources
A Discrete Model of Rock-Soil Medium Response in the Determination of Horizontal Strain Values
Applied Sciences, 2021 This paper presents a method for determining the standard deviation and variation coefficient for both the predicted and measured values of horizontal strain that were caused by underground mining operations. The solution was based on a discrete model of
Anton Sroka +6 more
doaj +1 more source
The geometry and thickness of deformation-band fault core and its influence on sealing characteristics of deformation-band fault zones [PDF]
, 2005 Deformation-band faults in high-porosity reservoir sandstones commonly contain a fault core of intensely crushed rock surrounding the main slip surfaces.
Thompson, L.B. +2 more
core +4 more sources
Surface quality and dry sliding wear behavior of AZ61Mg alloy using Abbott firestone technique
Scientific Reports, 2023 Currently, magnesium alloys are widely utilized in diverse sectors due to their unique properties. However, the AZ61Mg alloy, a commonly used magnesium alloy, is known to have poor wear resistance, which limits its applications.
Eman H. El-Shenawy, Ahmed I. Z. Farahat
doaj +1 more source
The Mohr–Coulomb criterion for intact rock strength and friction – a re-evaluation and consideration of failure under polyaxial stresses [PDF]
Solid Earth, 2016 Darley Dale and Pennant sandstones were tested under conditions of both axisymmetric shortening and extension normal to bedding. These are the two extremes of loading under polyaxial stress conditions.
A. Hackston, E. Rutter
doaj +1 more source
q-Deformed and c-Deformed Harmonic Oscillators [PDF]
Progress of Theoretical Physics, 2003 Summary: Hamilton functions of classical deformed oscillators (\(c\)-deformed oscillators) are derived from Hamiltonians of \(q\)-deformed oscillators of the Macfarlane and Dubna types. A new scale parameter, \(l_q\), with the dimension of length, is introduced to relate a dimensionless parameter characterizing the deformation with the natural length ...
Sogami, Ikuo S. +2 more
openaire +3 more sources
Application of Electron Backscatter Diffraction to Calcite-Twinning Paleopiezometry
Geosciences, 2022 Electron backscatter diffraction (EBSD) was used to determine the orientation of mechanically twinned grains in Carrara marble experimentally deformed to a small strain (≤4%) at room temperature and at a moderate confining pressure (225 MPa).
Ernest Rutter +2 more
doaj +1 more source
Classifying deformable and non-deformable video objects [PDF]
7th International Conference on Imaging for Crime Detection and Prevention (ICDP 2016), 2016 This paper presents a fully automated approach to classifying deformable and non-deformable moving objects in a video surveillance scene. We estimate an object's motion using Marzat optical-flow algorithm. We filter the motion vectors and attempt to find the transformation that represents the correct mapping between the two positions.
Wael F. Youssef +2 more
openaire +3 more sources
Measurement and analysis of brain deformation during neurosurgery. [PDF]
, 2003 Recent studies have shown that the surface of the brain is deformed by up to 20 mm after the skull is opened during neurosurgery, which could lead to substantial error in commercial image-guided surgery systems.
Maurer, C R +15 more
core +1 more source