Results 41 to 50 of about 6,147 (304)

Resonant column tests on maximum shear modulus and damping ratio of coral sand

open access: yesYantu gongcheng xuebao, 2020
The resonant column tests on the effects of relative density and confining pressure on the maximum modulus and damping ratio of coral sand in South China Sea under small strain are performed.
LI Xiao-mei 1, WANG Fang 1, HAN Lin 2, GUAN Yun-fei 1, ZHAN Xin-jie 1
doaj   +1 more source

Investigation of long-wavelength elastic wave propagation through wet bentonite-filled rock joints

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2023
The saturation of the compacted bentonite buffer in the deep geological repository can cause bentonite swelling, intrusion into rock fractures, and erosion.
Ji-Won Kim   +3 more
doaj   +1 more source

Spinal Cord Infarction Versus Idiopathic Transverse Myelitis: Clinical, Radiological, and Functional Insights From a Retrospective Cohort Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Spinal cord infarction (SCI) is a rare but devastating myelopathy, characterized by a high disability rate and an unfavorable prognosis. It has often been underdiagnosed and misdiagnosed as idiopathic transverse myelitis (ITM). This study aimed to describe the clinical features, radiological biomarkers, treatments, and functional ...
Zeqiang Ji   +13 more
wiley   +1 more source

Soil Dynamic Constitutive Model for Characterizing the Nonlinear-Hysteretic Response

open access: yesApplied Sciences, 2017
Characterization of nonlinear hysteretic responses plays a significant role in predicting soil behaviors. They are mostly described with either simple empirical functions or complex constitutive models.
Song-Hun Chong
doaj   +1 more source

Laboratory Investigation of the Mechanical Properties of a Rubber–Calcareous Sand Mixture: The Effect of Rubber Content

open access: yesApplied Sciences, 2020
This paper introduces a rubber–calcareous sand mixture as a lightweight building material in offshore engineering. The mechanical properties of mixtures of varying rubber contents were investigated by performing a one-dimensional (1-D) compression test ...
Xin Liu, Chaoyang Tian, Hengxing Lan
doaj   +1 more source

CSF Monoamine Metabolites and Cognitive Trajectory in Early Parkinson's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Imaging and postmortem studies indicate that abnormalities in monoaminergic neurotransmission contribute to cognitive impairment in Parkinson's disease (PD). However, it remains uncertain if cerebrospinal fluid (CSF) monoamine metabolites can serve as biomarkers of cognitive decline in early PD.
Jing‐Yu Shao   +7 more
wiley   +1 more source

A modified linear-elastic model for calibration of resonant column devices accommodating drive system compliance [PDF]

open access: yes
Measurements of small-strain shear modulus of soils and rocks using the resonant column apparatus are highly dependent on accurate physical characterisation of the apparatus's drive components.
Wheeler, Simon   +3 more
core   +1 more source

Elevated Connectivity During Language Processing Is Associated With Cognitive Performance in SeLECTS

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Self‐Limited Epilepsy with Centrotemporal Spikes (SeLECTS) is associated with language impairments despite seizures originating in the motor cortex, suggesting aberrant cross‐network interactions. Here we tested whether functional connectivity in SeLECTS during language tasks predicts language performance.
Wendy Qi   +8 more
wiley   +1 more source

Comparative Experimental Study on the Dynamic and Static Stiffness of Sandy Soils Utilizing Alpan’s Empirical Approach

open access: yesApplied Sciences
Stiffness parameters are very important and effective in the constitutive models used in finite element analysis. It is not easy or common to obtain these parameters in the laboratory.
Guldem Korkmaz   +2 more
doaj   +1 more source

Effects of loess content on dynamic shear modulus and damping ratio of Taiyuan sand

open access: yesYantu gongcheng xuebao, 2019
The mixtures of loess and Taiyuan sand are distributed widely along the No. 2 metro line of Taiyuan, which leads to an urgent need for the dynamic shear modulus G and damping ratio λ to analyze the seismic response.
CHENG Ke , MIAO Yu
doaj   +1 more source

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