Results 31 to 40 of about 14,286 (264)

Improving a multi-grain-size total sediment load model through a new standardized reference shear stress for incipient motion and an adjusted saltation height description [PDF]

Earth Surface Dynamics
Modelling sediment transport is important to understand how fluvial systems respond to climatic change or other transient conditions such as catastrophic sediment release.
M. Le Minor, M. Le Minor, D. Lague, J. Howarth, P. Davy   +4 more
doaj   +1 more source

Experimental Study on Uniform and Mixed Bed-Load Sediment Transport under Unsteady Flow

Applied Sciences, 2020
The scouring and deposition of sediment caused by unsteady flows (e.g., storm waves and floods) produces many secondary disasters. The resultant bed-load movement exhibits different transport laws compared with that by steady flow.
Zihao Duan, Jie Chen, Changbo Jiang, Xiaojian Liu, Bingbing Zhao   +4 more
doaj   +1 more source

A probabilistic description of the bed load sediment flux: 4. Fickian diffusion at low transport rates [PDF]

Journal of Geophysical Research: Earth Surface, 2012
High‐speed imaging of coarse sand particles transported as bed load reveals how particle motions possess intrinsic periodicities associated with their start‐and‐stop behavior. The dominant harmonics in these motions have a primary influence on the rate at which the mean squared particle displacementR(τ) — a measure conventionally used to assess the ...
David Jon Furbish, Ashley E. Ball, Mark W. Schmeeckle   +2 more
openaire   +1 more source

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

FEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard, Emma‐Jayne Proctor, Jiawa Wang, Nikolas P. Johnston, Andrew Hayes, Georgia McCorkell, Haibo Yu, Jai Tree, Mark R. Davies, Mark J. Walker, Ronald Sluyter, Stephan Brouwer, Martina L. Sanderson‐Smith   +12 more
wiley   +1 more source

Experimental Study on the Breakage Characteristics of Riverbed Armoring Under Reservoir Discharges Variation

工程科学与技术, 2020
The influence of the reservoirs discharge variation on riverbed armoring in mountainous rivers was investigated. The flume experiments were carried out by using clear water (no upstream sediment supply) under two conditions: alternating discharges and ...
Qi WANG, Yuqi SHAN, Chao LIU, Xingnian LIU   +3 more
doaj  

BCG vaccination potentiates oxidative phosphorylation in neonatal myeloid‐derived suppressor cells

FEBS Open Bio, EarlyView.
BCG vaccination enhances oxidative phosphorylation in neonatal MDSCs, impairing their immunosuppressive function. It upregulates electron transport chain genes and mitochondrial activity, increasing ATP and oxygen consumption. Pharmacological OXPHOS inhibition partially restores suppressive capacity, confirming causality.
Yingying Chen, Hui Li
wiley   +1 more source

Evaluation of an acoustic Doppler technique for bed-load transport measurements in sand-bed Rivers

E3S Web of Conferences, 2018
The bottom tracking (BT) feature of the acoustic Doppler current profilers (ADCP) have emerged as a promising technique in evaluating the bed load. Strong statistical correlations are reported between the ADCP BT velocity and the transport rate obtained ...
Conevski S., Winterscheid A., Ruther N., Guerrero M., Rennie C.   +4 more
doaj   +1 more source

Data‐Driven SuStaIn Model of Disability Progression in Amyotrophic Lateral Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To determine whether ordinal Subtype and Stage Inference (SuStaIn) applied to routine ALSFRS‐R item scores can identify reproducible disability progression patterns in amyotrophic lateral sclerosis (ALS) and provide clinically meaningful staging.
Giammarco Milella, Veria Vacchiano, Vittorio Velucci, Stefano Zoccolella, Rocco Liguori, Giovanni Defazio   +5 more
wiley   +1 more source

Boundary‐Dependent Sleep–Wake Dysregulation in Idiopathic Hypersomnia

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Idiopathic hypersomnia (IH) presents with excessive daytime sleepiness (EDS) despite apparently preserved nocturnal sleep, challenging traditional models of hypersomnolence based on sleep loss or fragmentation. We aimed to test the hypothesis that EDS in IH reflects excessive stabilization of the sleep state, consistent with ...
Samantha Mombelli, Karine Lacourse, Hélène Blais, Anne‐Sophie Deshaies‐Rugama, Cynthia Thompson, Alex Desautels, Jacques Montplaisir, Milan Nigam, Christophe Moderie, Boshra Khajehpiri, Catherine Duclos, Jean Marc Lina, Julie Carrier, Nadia Gosselin   +13 more
wiley   +1 more source

Influence of the sediment supply texture on morphological adjustments in gravel‐bed rivers

Water Resources Research, 2014
The role played by the texture of the sediment supply on channel bed adjustments in gravel‐bed rivers is poorly understood. To address this issue, an experimental campaign has been designed.
Carles Ferrer‐Boix, Marwan A. Hassan
doaj   +1 more source