Results 51 to 60 of about 394,843 (294)

Study on the Effect of Silica–Manganese Slag Mixing on the Deterioration Resistance of Concrete under the Action of Salt Freezing

open access: yesBuildings
The use of silico-manganese slag as a substitute for cement in the preparation of concrete will not only reduce pollution in the atmosphere and on land due to solid waste but also reduce the cost of concrete. To explore this possibility, silico-manganese
Jingjing He   +5 more
doaj   +1 more source

Medium Erosion Damage Test and Erosion Rate Prediction Model of Sand Control Screen

open access: yesShiyou jixie, 2022
In order to clarify the mechanism, main controlling factors and influence law of the erosion damage of the metal screen sand-retaining medium, the multi-layer metal screen sand-retaining medium in the composite completion screen pipe was selected for a ...
Dong Changyin   +6 more
doaj  

A mechanism for bentonite buffer erosion in a fracture with a naturally varying aperture [PDF]

open access: yes, 2015
In the deep geological disposal of nuclear waste in crystalline rock, erosion of the bentonite buffer may occur during periods of glaciation. Previous researchers have examined the mechanism and rates of extrusion and erosion for purified montmorillonite
El Mountassir, Grainne   +3 more
core   +1 more source

The Role of Calcitonin Gene‐Related Peptide in High‐Altitude Headache: A Prospective Field Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective High‐altitude headache (HAH) is a common neurological condition associated with rapid ascent to high altitude. The pathophysiological mechanisms underlying HAH remain incompletely understood. Calcitonin gene‐related peptide (CGRP), a neuropeptide implicated in migraine pathophysiology, may play a key role in the pathophysiology of ...
Roman Schniepp   +4 more
wiley   +1 more source

Prediction of Erosion of a Hydrocyclone Inner Wall Based on CFD-DPM

open access: yesFluids
The erosion mechanism of hydrocyclones under air column conditions is still unclear. In this paper, Computational Fluid Dynamics–Discrete Phase Model (CFD-DPM) technology is adopted to perform transient simulations of the three-phase flow (liquid–gas ...
Ziyang Wu, Gangfeng Zheng, Shuntang Li
doaj   +1 more source

Erosion Behaviour of API X100 Pipeline Steel at Various Impact Angles and Particle Speeds

open access: yesMetals, 2016
Erosion is the gradual removal of material due to solid particle impingement and results in a failure of pipeline materials. In this study, a series of erosion tests were carried out to investigate the influence of particle speed and impact angle on the ...
Paul C. Okonkwo   +3 more
doaj   +1 more source

Light-induced disassembly of dusty bodies in inner protoplanetary discs: implications for the formation of planets [PDF]

open access: yes, 2007
Laboratory experiments show that a solid-state greenhouse effect in combination with thermophoresis can efficiently erode a dust bed in a low-pressure gaseous environment.
Alexander   +44 more
core   +1 more source

Ion thruster accelerator grid erosion mechanism under extreme conditions of cylindrical erosion and chamfer erosion

open access: yesChinese Journal of Aeronautics, 2023
In this paper, the abnormal experimental phenomenon on barrel erosion under extreme working conditions in the ultra-long life experiment (>10000 h) of ion thruster ion optics is studied by the Immersed-Finite-Element Particle-In-Cell Monte-Carlo-Collision (IFE-PIC-MCC) method and the grid erosion evaluation model. The transport process of beam ions and
XIA, Guangqing   +6 more
openaire   +3 more sources

Clinical Practice Guideline for Evaluation and Management of Peripheral Nervous System Manifestations in Sjögren's Disease

open access: yesArthritis Care &Research, EarlyView.
Objective Sjögren's disease is an autoimmune disorder that can impact multiple organ systems, including the peripheral nervous system (PNS). PNS manifestations, which can exist concurrently, include mononeuropathies, polyneuropathies, and autonomic nervous system neuropathies.
Anahita Deboo   +88 more
wiley   +1 more source

Recent Advances in Experimental and Numerical Studies on Cloud and Erosion Behaviors in Cavitating Jets

open access: yesFluids
Recent advances in experimental techniques for visualizing cloud behavior, pit formation, and erosion in cavitating jets have been reviewed. To characterize the erosion behavior of cavitating jets and clarify their erosion mechanisms, various ...
Nobuyuki Fujisawa
doaj   +1 more source

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