Results 51 to 60 of about 18,592 (200)

Counterflow measurements in strongly correlated GaAs hole bilayers: evidence for electron-hole pairing

, 2004
We study interacting GaAs bilayer hole systems, with very small interlayer tunneling, in a counterflow geometry where equal currents are passed in opposite directions in the two, independently contacted layers.
Huse, D. A., Shayegan, M., Tutuc, E.
core   +1 more source

Counterflows in viscous electron-hole fluid [PDF]

, 2018
In ultra-pure conductors, collective motion of charge carriers at relatively high temperatures may become hydrodynamic such that electronic transport may be described similarly to a viscous flow.
Alekseev, P. S., Dmitriev, A. P., Gornyi, I. V., Kachorovskii, V. Yu., Narozhny, B. N., Titov, M.   +5 more
core   +3 more sources

Slab‐Mantle Interaction During Subduction Initiation: Constraints From Trace Element and Sr‐Nd‐Pb Isotope Systematics of Boninite and Other Magmas and Metamorphic Sole in the Oman Ophiolite

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract The Late Cretaceous Oman ophiolite includes a series of volcanic rocks generated during the transition from spreading ridge to protoarc associated with subduction initiation. We analyzed major and trace elements and Sr, Nd, and Pb isotope compositions of lavas and dikes of the protoarc stage, especially boninites. We also analyzed amphibolites
Tsuyoshi Ishikawa, Kazuya Nagaishi, Kyoko Kanayama, Keitaro Kitamura, Shigeyuki Wakaki, Yuki Kusano, Susumu Umino   +6 more
wiley   +1 more source

Improvement of Mass Transfer Characteristics for the Gas-Liquid System in a Vortex Counterflow Apparatus

Energies
This article aims to increase the intensity of mass transfer between gas and liquid in counterflow gas–liquid flow, one of the key problems in designing mass transfer equipment.
Vsevolod Sklabinskyi, Ivan Pavlenko, Maksym Skydanenko, Sylwia Włodarczak, Andżelika Krupińska, Marek Ochowiak, Izabela Kruszelnicka   +6 more
doaj   +1 more source

Diffusion of an Inhomogeneous Vortex Tangle

, 2002
The spatial diffusion of an inhomogeneous vortex tangle is studied numerically with the vortex filament model. A localized initial tangle is prepared by applying a counterflow, and the tangle is allowed to diffuse freely after the counterflow is turned ...
Davis, Makoto Tsubota, Stalp, Tsubota, Tsunehiko Araki, Vinen, W.F. Vinen   +6 more
core   +1 more source

Open‐ and Closed‐Loop Recycling of Polyesters and Post‐Consumer Waste Under Industrially Relevant Conditions Using Bisguanidine Organocatalysts

ChemSusChem, Volume 19, Issue 1, January 2026.
The chemical recycling of polylactide (PLA), polyethylene terephthalate (PET), and polycaprolactone (PCL) is performed using bisguanidine organocatalysts. Intensive kinetic studies of the methanolysis and ethanolysis of PLA were performed. The most active organocatalyst was successfully applied in the depolymerization of ternary plastic mixes of PLA ...
Lisa Burkart, Alisa Hahn, Damon Blum, Yasemin Kara, Alexander Hoffmann, Sonja Herres‐Pawlis   +5 more
wiley   +1 more source

Instability of vortex array and transitions to turbulent states in rotating helium II

, 2003
We consider superfluid helium inside a container which rotates at constant angular velocity and investigate numerically the stability of the array of quantized vortices in the presence of an imposed axial counterflow.
A.L. Fetter, A.P. Finne, Akira Mitani, C.E. Swanson, C.F. Barenghi, C.F. Barenghi, C.F. Barenghi, C.F. Barenghi, Carlo F. Barenghi, D. Kivotides, D. Stauffer, D.C. Samuels, D.J. Melotte, D.K. Cheng, D.R. Poole, J. Koplik, J. Maurer, J.A. Northby, K.W. Schwarz, K.W. Schwarz, K.W. Schwarz, M. Hossain, M. Tsubota, M. Tsubota, M. Tsubota, M. Tsubota, Makoto Tsubota, R.M. Ostermeier, R.T. Wang, S.I. Davis, S.N. Fischer, S.R. Stalp, T. Araki, T. Lipniacki, Tsunehiko Araki, W.F. Vinen, W.F. Vinen, W.F. Vinen, W.F. Vinen, W.I. Glaberson   +39 more
core   +1 more source

Tutorial Overview: Numerical Synergy in Muffler Acoustic Design A Critical Comparison of TMM, FEM, and CFD Approaches for Transmission Loss Quantification

Engineering Reports, Volume 8, Issue 1, January 2026.
Experimental measurements reveal distinct performance boundaries: TMM achieves rapid convergence (< 2 dB error below 2000 Hz) but neglects 3D wave effects; FEA maintains < 10% deviation up to 3500 Hz with 90% reduced computational cost versus CFD; while transient CFD captures broadband attenuation trends despite 10× higher resource demands.
Bin Fang, Tong Wei, Yi Yang, Xintie Wang
wiley   +1 more source

Development and Automation of Microturbulence Intensifying Systems and Biosynthesis Conditions in Bioreactors [PDF]

Bioautomation, 2007
Results of the investigation applying newly developed methods: a Stirring Intensity Measuring Device (SIMD), a counterflow mixing system, identification of the state of turbohypobiosis, counterflow bioreactor's design and a process controller BIO-3 have ...
Uldis Viesturs
doaj  

Refrigeration bound of heat-producing cylinders by superfluid helium

Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2019
In this paper we go ahead in our studies on refrigeration of nanosystems by superfluid helium, as an appealing subject for future applications to computers or astronautical precision nanodevices.
David Jou, Michele Sciacca, Antonio Sellitto, Luca Galantucci   +3 more
doaj   +1 more source