Results 11 to 20 of about 544,820 (302)
Role of plastic zone porosity and permeability in sand production in weak sandstone reservoirs
Underground Space, 2022 Sand production is often characterized as a two-stage process, in which material failure occurs near the cavity, leading to the formation of a plastic zone, from which particles are detached and transported out because of continuous hydrodynamic erosion ...
Ainash Shabdirova +2 more
doaj +3 more sources
International Journal of Mining Science and Technology, 2019 In the non-uniform stress field, the surrounding rock plastic zone of the circular roadway shows different shapes under the different confining pressure conditions. Based on the boundary shape characteristics of the plastic zone, the characteristic radii
Xiaofei Guo +4 more
doaj +3 more sources
Evolution Characteristics of Plastic Zone in Jointed Rock Mass of High-Temperature Hydraulic Tunnel
Applied Sciences, 2023 The evolution characteristics and the extent of the plastic zone in rock mass can reflect the failure characteristics and destruction degree of a hydraulic tunnel.
Kangbin Li +3 more
doaj +1 more source
Учёные записки Санкт-Петербургского государственного медицинского университета им. Акад. И.П. Павлова, 2016 Carotid artery endarterectomy (KEAE) is a worldwide standard operation in revascularization of brain. KEAE methodology is wellknown, proven and used in many health care facilities.The aim of our examination was: 1) to study anatomic changes of plastic ...
K. M. Vakhitov
doaj +1 more source
Geofluids, 2021 Gas extraction is most commonly used to control gas disasters in coal mines. The distribution of the plastic zone around a borehole and the sealing quality are key factors affecting gas extraction. In this paper, the plastic zone was simulated by COMSOL,
Kuan Wu +4 more
doaj +1 more source
Determination of micro-scale plastic strain caused by orthogonal cutting [PDF]
, 2008 An electron beam lithography technique has been used to produce microgrids in order to measure local plastic strains, induced during an orthogonal cutting process, at the microscopic scale in the shear zone and under the machined surface. Microgrids with
Allais +31 more
core +1 more source
Rapid Active Zone Remodeling during Synaptic Plasticity [PDF]
The Journal of Neuroscience, 2011 How can synapses change the amount of neurotransmitter released during synaptic plasticity? Although release in general is intensely investigated, its determinants during plasticity are still poorly understood. As a model for plastic strengthening of synaptic release, we here use the well-established presynaptic homeostatic compensation during ...
Annika, Weyhersmüller +3 more
openaire +2 more sources
Roof stability evaluation of large section open-off cut in lower slice of slicing mining
Gong-kuang zidonghua, 2022 In order to study the roof stability of large-section open-off cut in lower slice of slicing mining, the 14 boreholes in the top coal of the 203 open-off cut in the lower slice of 1−2 coal seam in Huojitu Mine of Daliuta Mine is taken as the research ...
CHAI Jing +7 more
doaj +1 more source
Descriptions of reversed yielding in bending [PDF]
, 2007 Existence of Bauschinger effect in bending-unbending of copper beams has been shown from experiment. In modelling of the Bauschinger effect, it is shown that a significant second plastic penetration can occur with the release of the moment required for ...
Bauschinger J. +4 more
core +1 more source
Relationship between plastic zone of roadway and coal and gas outburst hole
Meikuang Anquan, 2022 The outburst hole is of great significance to study the mechanism of coal and gas outburst. Through numerical simulation, the plastic zone of coal body at the excavation head of outburst roadway is obtained and compared with the actual outburst holes ...
HAN Sen, WANG Weijun, PENG Gang
doaj +1 more source