Results 251 to 260 of about 38,901 (314)

Sparse keypoint segmentation of lung fissures: efficient geometric deep learning for abstracting volumetric images. [PDF]

open access: yesInt J Comput Assist Radiol Surg
Kaftan P   +5 more
europepmc   +1 more source

A review of multiscale numerical modeling of rock mechanics and rock engineering

open access: yesDeep Underground Science and Engineering, EarlyView.
Multiscale numerical methods of rock mechanics and rock engineering are reviewed, and the review results show that more attention should be paid to the development of an advanced constitutive model in addition to numerical techniques themselves. Abstract Rock is geometrically and mechanically multiscale in nature, and the traditional phenomenological ...
Xindong Wei, Zhe Li, Gaofeng Zhao
wiley   +1 more source

Investigation of the failure characteristics of fissure tunnels under dynamic and static combinations

open access: yesDeep Underground Science and Engineering, EarlyView.
This article aims to investigate the dynamic fracture response of fractured tunnel models under zero geological stress through physical experiments and numerical simulations. It further simulates the dynamic fracture characteristics of fractured tunnel models under geological stress ranging from 0 to 2.5 MPa using the numerical software AUTODYN ...
Peng Ying   +7 more
wiley   +1 more source

Simulation of CO2–water two‐phase fluid displacement characteristics based on the phase field method

open access: yesDeep Underground Science and Engineering, EarlyView.
In the present study, a two‐dimensional numerical model of porous media was developed using the actual pore structure of the core sample. The phase field method was utilized to simulate the impact of the displacement velocity, the water–gas viscosity ratio, and the density ratio on the flow behavior of two‐phase fluids in porous media. Abstract The two‐
Changnü Zeng   +3 more
wiley   +1 more source

Random finite element analysis on ground subsidence caused by tunnel excavation in karst regions with spatial variable soil

open access: yesDeep Underground Science and Engineering, EarlyView.
This study investigates ground subsidence during tunnel excavation in karst areas, highlighting the combined effects of karst cave proximity, cave size, and soil spatial variability. Findings suggest that shorter cave distances and larger cave sizes increase subsidence variability, and a modified Peck formula is proposed for more accurate subsidence ...
Zhenghong Su   +4 more
wiley   +1 more source

Thermoelectric performance enhancement of environmentally‐friendly SrTiO3 epitaxial films by hydrogen substitution

open access: yesEcoEnergy, EarlyView.
Thermoelectric performance (ZT) enhancement of SrTiO3 films was demonstrated by topochemical hydrogen anion (H−) substitution with CaH2, enabling wide‐range control of carrier concentration. SrTiO3−xHx film realized higher room‐temperature ZT = 0.14 than other heavy‐element substituted SrTiO3 films. H− substitution approach will lead to the development
Masatoshi Kimura   +6 more
wiley   +1 more source

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