Results 41 to 50 of about 857,478 (388)

Towards Model Synchronization for Consistency Management of Mechatronic Systems

open access: yesApplied Sciences, 2020
The development of a mechatronic system involves different designers having various viewpoints on the overall system to handle its complexity. Consequently, multiple models are created from a variety of domains such as mechanical, electronic, and ...
Aroua Berriche   +3 more
doaj   +1 more source

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

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

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 Obsolescence (i.e. state of being outdated) and shortage (i.e. lack of components) are distinct yet interconnected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

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

Quartz Crystal Microbalance Electronic Interfacing Systems: A Review

open access: yesItalian National Conference on Sensors, 2017
Quartz Crystal Microbalance (QCM) sensors are actively being implemented in various fields due to their compatibility with different operating conditions in gaseous/liquid mediums for a wide range of measurements.
A. Alassi, M. Benammar, D. Brett
semanticscholar   +1 more source

Temperature coefficients of crystalline-quartz elastic constants over the cryogenic range [4 K, 15 K]

open access: yes, 2016
This paper brings out results of a measurement campaign aiming to determine the temperature coefficients of synthetic quartz elastic constants at liquid helium temperature.
Bon, Jérémy   +2 more
core   +2 more sources

Hydrogel‐Based Photothermal‐Catalytic Membrane for Efficient Cogeneration of Freshwater and Hydrogen in Membrane Distillation System

open access: yesAdvanced Functional Materials, EarlyView.
This work presents an overview of the PTC‐VMD system for water‐hydrogen co‐generation. a) Illustration of the hydrogel‐based PTC membrane and the co‐generation of water and hydrogen. b) Structure of the PTC‐VMD system and the functions of each component layer.
Jiawei Sun   +7 more
wiley   +1 more source

Session 5: Development, Neuroscience and Evolutionary Psychology [PDF]

open access: yes, 2002
Proceedings of the Pittsburgh Workshop in History and Philosophy of Biology, Center for Philosophy of Science, University of Pittsburgh, March 23-24 2001 Session 5: Development, Neuroscience and Evolutionary ...
Machamer, Peter   +3 more
core  

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