Results 71 to 80 of about 994,024 (202)

Development and Verification of Bidirectional Micro-friction Load Transfer Plate for Geotechnical True Triaxial test

open access: yes工程科学与技术, 2022
The true triaxial apparatus is an ideal instrument to study the mechanical properties of soil under complex stress state, but how to keep the loading structure and soil without friction and independent loading in three directions is the technical ...
Yanli WANG   +4 more
doaj  

True triaxial tests on unsaturated soils with suction-controlled condition

open access: yesYantu gongcheng xuebao, 2019
Based on the new true triaxial apparatus of Xi’an University of Technology, the pedestal of the pressure chamber is installed with a high-air-entry-value ceramic disk and porous plate is placed on the top of the specimens.
ZHENG Fang 1, SHAO Sheng-jun 1,2, ZHANG Bo 1, SHE Fang-tao 1
doaj   +1 more source

Study on Fluid Pressure in Tubing, Dynamic Stress in Reservoir, and Fracture Propagation Morphology During Variable‐Rate Hydraulic Fracturing

open access: yesEnergy Science &Engineering, EarlyView.
Variable‐rate hydraulic fracturing can induce unsteady flow in the tubing, thereby generating fluctuating fluid pressure near the bottom‐hole reservoir. Dynamic stress is generated in the reservoir under the action of fluctuating fluid pressure and propagates as stress waves.
Zhu Ge, Wang Chaojing, Li Weicheng
wiley   +1 more source

Micro–Macro Performance Response Characteristics of Reservoirs in Water‐Bearing Coal Seams After Supercritical CO2 Injection

open access: yesEnergy Science &Engineering, EarlyView.
1. The synergistic effects of carbonate mineral dissolution, coal matrix drying/shrinkage, and supercritical CO2 (ScCO2)‐induced organic matter extraction collectively enhance pore/fracture connectivity, thereby significantly improving permeability. 2.
Junwen Zhou, Enguang Han
wiley   +1 more source

Similar locomotor patterns across Quarter Horse disciplines inform lameness assessment

open access: yesEquine Veterinary Journal, EarlyView.
Abstract Background Lineage‐based selection is central to the Quarter Horse industry and is often justified by the assumption that morphology determines locomotor function. However, objective evidence linking static conformation to discipline‐specific locomotor behaviour under standardised conditions remains limited.
Renata Farinelli de Siqueira   +4 more
wiley   +1 more source

Context‐aware machine learning for lameness side and severity prediction in trotting horses: A proof‐of‐concept study

open access: yesEquine Veterinary Journal, EarlyView.
Abstract Background In clinical practice, lameness evaluation often relies on visual assessment under different examination conditions, including ground and figures, and remains subjective. Although objective symmetry indices provide quantitative measures of gait asymmetry, their interpretation across multiple conditions remains challenging because ...
Mahaut Gérard   +9 more
wiley   +1 more source

Association between ADHD symptoms and device‐measured physical activity and sedentary behavior in childhood: A population‐based twin study

open access: yesJCPP Advances, EarlyView.
Abstract Background Attention‐deficit/hyperactivity disorder (ADHD) symptoms are associated with adverse health outcomes; this may be partially due to unhealthy lifestyle factors such as low physical activity (PA) and high sedentary behavior (SED). However, this association remains unclear.
Narda Ontiveros   +5 more
wiley   +1 more source

An Open Database of Lunar Regolith and Simulants Properties

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Lunar regolith, the layer of unconsolidated material covering the Moon's surface, is central to the science and technology developed for the Moon, notably related to in‐situ science investigations, resource utilization, surface infrastructure, and mobility systems.
Léonie Gasteiner   +2 more
wiley   +1 more source

Hypoplasticity for Sand With Explicitly Defined Asymptotic States

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT A hypoplastic model for sand with defined asymptotic states is proposed. The fourth‐order tensor A$\mathsf {A}$ is defined by modifying the compression relation of the reference hypoplastic model by von Wolffersdorff (HP). This enables the mathematical formulation of a hypoplastic model for sand including the asymptotic state boundary surface (
Luis Mugele   +2 more
wiley   +1 more source

Effect of Double Annealing on the Microstructure and Mechanical Properties of a Medium Manganese Steel

open access: yessteel research international, EarlyView.
A double intercritical annealing strategy is proposed to tailor the multiphase microstructure and mechanical response of a medium‐Mn steel. The treatment produces an ultrafine mixture of ferrite, martensite and multiple austenite populations with graded thermal and mechanical stability, formed through austenite reversion and controlled retransformation.
Mattia Franceschi   +3 more
wiley   +1 more source

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