Results 31 to 40 of about 368,322 (300)

Suspended Sediments in Environmental Flows: Interpretation of Concentration Profiles Shapes

open access: yesHydrology, 2022
In environmental flows, field and laboratory measurements of suspended sediments show two kinds of concentration profiles. For coarse sediments, a near-bed upward convex profile is observed beneath the main upward concave profile.
Rafik Absi
doaj   +1 more source

Nanoscale Friction at the Quartz-Quartz/Kaolinite Interface

open access: yesColloids and Surfaces A: Physicochemical and Engineering Aspects, 2023
International ...
Wei, Pengchang   +5 more
openaire   +3 more sources

Systematic Analysis of the Links Between Obsolescence–Shortage and Reliability–Maintainability–Availability

open access: yesIEEE Access
Component obsolescence and shortages impact virtually all systems, particularly those with extended lifespans, such as aircrafts or trains. Obsolescence (i.e. state of being outdated) and shortage (i.e. lack of components) are distinct yet interconnected
Sahar Karaani   +5 more
doaj   +1 more source

The ice-nucleating ability of quartz immersed in water and its atmospheric importance compared to K-feldspar

open access: yesAtmospheric Chemistry and Physics, 2019
. Mineral dust particles are thought to be an important type of ice-nucleating particle (INP) in the mixed-phase cloud regime around the globe. While K-rich feldspar (K-feldspar) has been identified as being a particularly important component of mineral ...
A. Harrison   +7 more
semanticscholar   +1 more source

Reinvestigating the Parabolic-Shaped Eddy Viscosity Profile for Free Surface Flows

open access: yesHydrology, 2021
The flow in rivers is turbulent. The main parameter related to turbulence in rivers is the eddy viscosity, which is used to model a turbulent flow and is involved in the determination of both velocities and sediment concentrations.
Rafik Absi
doaj   +1 more source

Thermal-electrical analogy and inertia for thermal performance of building envelops [PDF]

open access: yesMATEC Web of Conferences, 2020
For transient thermal performance of building envelops adequate parameters are needed to capture the time lag and decrement factor. It is surprising that, in the formal electrical analogy, "inertia" is not represented by same components in fluid ...
Absi Rafik   +2 more
doaj   +1 more source

On the Mechanism of the Dissolution of Quartz and Silica in Aqueous Solutions

open access: yesACS Omega, 2017
Quartz and silica are common materials, and their dissolution is of significant interest to a wide range of scientists. The kinetics of the dissolution of quartz and silica have been measured extensively, yet no clear theory of dissolution is available ...
F. Crundwell
semanticscholar   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti   +11 more
wiley   +1 more source

Enhanced Gamma Radiation Shielding Using Epoxy Quartz Fabric Composites Reinforced With CoCl2 Microparticles

open access: yesAdvanced Engineering Materials, EarlyView.
The growing demand for lightweight, nontoxic, and multifunctional gamma shielding materials has intensified efforts to find alternatives to conventional lead and aluminum‐based protectants. In this work, we develop epoxy quartz fabric composites reinforced with cobalt chloride (CoCl2) microparticles, fabricated via hand lay‐up with varying filler ...
Summan Urooge   +7 more
wiley   +1 more source

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