Results 31 to 40 of about 837,694 (400)

Express method for contactless measurement of parameters of thermoelectric materials

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2015
The paper presents an original method for contactless express measurement of parameters of thermoelectric materials. The presence of a combination of AC and DC magnetic fields in the gap of the oscillating circuit, where the monitored sample of the ...
A. A. Ashcheulov   +2 more
doaj   +1 more source

Category Theory Framework for System Engineering and Safety Assessment Model Synchronization Methodologies

open access: yesApplied Sciences, 2022
In recent decades, there has been a significant increase in systems’ complexity, leading to a rise in the need for more and more models. Models created with different intents are written using different formalisms and give diverse system representations.
Julien Vidalie   +3 more
doaj   +1 more source

Mathematical Analysis of a Thermostatted Equation with a Discrete Real Activity Variable

open access: yesMathematics, 2020
This paper deals with the mathematical analysis of a thermostatted kinetic theory equation. Specifically, the assumption on the domain of the activity variable is relaxed allowing for the discrete activity to attain real values.
Carlo Bianca, Marco Menale
doaj   +1 more source

Heterogeneous Models Integration for Safety Critical Mechatronic Systems and Related Digital Twin Definition: Application to a Collaborative Workplace for Aircraft Assembly

open access: yesApplied Sciences, 2022
Nowadays, several manufacturing systems are evolving towards a greater collaboration between human and robots. The development of such systems requires integrated design tasks involving many disciplines and domains such as systems engineering, safety ...
Faïda Mhenni   +6 more
doaj   +1 more source

Quartz-tuning-fork enhanced photothermal spectroscopy for ultra-high sensitive trace gas detection.

open access: yesOptics Express, 2018
A gas sensing method based on quartz-tuning-fork enhanced photothermal spectroscopy (QEPTS) is reported in this paper. Unlike usually used thermally sensitive elements, a sharply resonant quartz-tuning-fork with the capability of enhanced mechanical ...
Yufei Ma   +4 more
semanticscholar   +1 more source

Probing viscoelastic properties of a thin polymer film sheared between a beads layer and quartz crystal resonator [PDF]

open access: yes, 2009
We report measurements of viscoelastic properties of thin polymer films of 10-100 nm at the MHz range. These thin films are confined between a quartz crystal resonator and a millimetric bead layer, producing an increase of both resonance frequency and ...
Ballantine D. S.   +4 more
core   +3 more sources

Beat frequency quartz-enhanced photoacoustic spectroscopy for fast and calibration-free continuous trace-gas monitoring

open access: yesNature Communications, 2017
Quartz-enhanced photoacoustic spectroscopy (QEPAS) is a sensitive gas detection technique which requires frequent calibration and has a long response time.
Hongpeng Wu   +9 more
semanticscholar   +1 more source

Phase-referenced nonlinear spectroscopy of the α-quartz/water interface [PDF]

open access: yesNature Communications, 2016
Probing the polarization of water molecules at charged interfaces by second harmonic generation spectroscopy has been heretofore limited to isotropic materials.
Paul E. Ohno   +4 more
semanticscholar   +1 more source

Integrated Electronic Transport and Thermometry at milliKelvin Temperatures and in Strong Magnetic Fields [PDF]

open access: yes, 2011
We fabricated a He-3 immersion cell for transport measurements of semiconductor nanostructures at ultra low temperatures and in strong magnetic fields. We have a new scheme of field-independent thermometry based on quartz tuning fork Helium-3 viscometry ...
Csathy, G. A.   +5 more
core   +3 more sources

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

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