Results 91 to 100 of about 4,034 (221)

Research on Coal Mechanical Properties Based on True Triaxial Loading and Unloading Experiment

open access: yes, 2021
To study the safety issues caused by coal mine excavation, self-developed simulation of earth interior atmosphere and sound test system was used to perform true triaxial loading and unloading tests of coal.
Haoxiang Deng   +4 more
core   +1 more source

Recent advancements and emerging challenges in deep underground engineering

open access: yes
Deep Underground Science and Engineering, EarlyView.
Jianguo Wang, Chunfai Leung
wiley   +1 more source

Physical Activity Profile of School‐Aged Children Born Very Preterm and Its Association With Sleep

open access: yesActa Paediatrica, EarlyView.
ABSTRACT Aim To describe the association between different physical activity and sleep parameters in school‐aged children born very preterm. Methods A cross‐sectional analysis was done in a cohort of 6‐ to 10‐year‐old children born at < 32 weeks' gestation at the Department of Neonatology, University of Tübingen, Germany.
Maham Hassan   +9 more
wiley   +1 more source

Triaxial behavior of granular material under complex loading path by a new numerical true triaxial engine

open access: yes, 2019
A new numerical true triaxial engine based on discrete element method accounting for rolling resistance contact is developed. By this engine, we have simulated mechanical behavior of granular materials under complex stress loading path in this study ...
Wang XL(王晓亮)   +5 more
core   +1 more source

Microdynamic mechanical properties and fracture evolution mechanism of monzogabbro with a true triaxial multilevel disturbance method

open access: yesInternational Journal of Mining Science and Technology
The far-field microdynamic disturbance caused by the excavation of deep mineral resources and underground engineering can induce surrounding rock damage in high-stress conditions and even lead to disasters.
Zhi Zheng   +5 more
doaj   +1 more source

Magnetic properties of geraisites, the first tektite strewn field identified in Brazil

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Geraisites are a newly recognized class of tektite from Brazil. They occur as centimeter‐sized, elongated to subspherical bodies scattered across surface gravel and shallow subsurface layers within a ~90‐km‐long strewn field extending between the municipalities of São João do Paraíso and Curral de Dentro, near the border between the states of ...
Melissa De Andrade Nunes   +7 more
wiley   +1 more source

The true triaxial strength anisotropy of sand

open access: yes
Sand exhibits transversely isotropic (TI) characteristics, with its strength properties influenced by the coupling effects of the intermediate principal stress ratio b and the orientation angle δ of the bedding plane (BP) relative to the major principal ...
Du, Xiuli   +4 more
core   +1 more source

STELLAR‐CB: Synthetic Temporal LSTM for Livestock Activity Recognition—Cow Behaviour

open access: yesVeterinary Medicine and Science, Volume 12, Issue 4, July 2026.
This study introduces a novel framework combining LSTM networks with SMOTE to address class imbalance in precision livestock farming. It improves the detection of rare behaviours in livestock, achieving state‐of‐the‐art performance while reducing computational overhead, offering a practical, breed‐agnostic solution for enhancing automated behaviour ...
Ghufran Ahmed   +9 more
wiley   +1 more source

Influence of End Effect on Rock Strength in True Triaxial Compression Test

open access: yes, 2017
The influence of the end effect on rock strength in true triaxial compression test was studied using a numerical approach. The influence of σ2 on rock strength was isolated by using the 2D Mohr-Coulomb failure criterion that depends only on σ1 and σ3 ...
Cai, Ming   +3 more
core   +1 more source

Numerical Modeling of Tank Cars Carrying Hazardous Materials With and Without Composite Metal Foam

open access: yesAdvanced Engineering Materials, Volume 28, Issue 11, 3 June 2026.
Large‐scale puncture models consisting of hazardous materials (HAZMATs) tank car with protective steel–steel composite metal foam (S–S CMF) are solved numerically. Tank car plate with added 10.91–13.33 mm thick S–S CMF layer does not puncture. Protective S–S CMF absorbs impact energy, reduces plate deformation, and prevents shear bands formation ...
Aman Kaushik, Afsaneh Rabiei
wiley   +1 more source

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