Results 111 to 120 of about 194,559 (288)

Pressure distribution in a converging-diverging nozzle during two-phase choked flow of subcooled nitrogen [PDF]

open access: yes
Choked flow rates and axial pressure distributions were measured for subcooled nitrogen in a converging-diverging nozzle with a constant area section in the throat region.
Simoneau, R. J.
core   +1 more source

Microstructure of Lithium Metal Electrodeposited at the Steel|Li6PS5Cl Interface in “Anode‐Free” Solid‐State Batteries

open access: yesAdvanced Energy Materials, EarlyView.
Reservoir‐free cells do not use lithium metal during cell preparation. Instead, lithium is electrodeposited during the initial charging step, potentially simplifying the manufacturing of solid‐state batteries. The electrochemical properties of the electrodeposited lithium layer are governed by its morphology and microstructure. However, little is known
Juri Becker   +5 more
wiley   +1 more source

Analysis of flow-field in a dual mode ramjet combustor with boundary layer bleed in isolator

open access: yesPropulsion and Power Research, 2021
A two-dimensional Reynolds averaged Navier Stokes (RANS) simulation of a dual mode ramjet (DMRJ) combustor is performed, modeling the University of Michigan dual-mode combustor experimental setup operating in reacting mode with different equivalence ...
Nishanth Thillai   +3 more
doaj  

Simulation of flight test conditions in the Langley pilot transonic cryogenic tunnel [PDF]

open access: yes
The theory and advantages of the cryogenic tunnel concept are briefly reviewed. The unique ability to vary temperature independently of pressure and Mach number allows, in addition to large reductions in model loads and tunnel power, the independent ...
Adcock, J. B.   +2 more
core   +1 more source

Generation of energetic He atom beams by a pulsed positive corona discharge [PDF]

open access: yes, 1997
Time-of-flight measurements were made of neutral helium atom beams extracted from a repetitive, pulsed, positive-point corona discharge. Two strong neutral peaks, one fast and one slow, were observed, accompanied by a prompt photon peak and a fast ion ...
Blumberg, Seth   +6 more
core   +1 more source

The Bitter Taste of Brazil's Temporary Import Ban on Robusta Coffee

open access: yesAgribusiness, EarlyView.
ABSTRACT Brazil, a leading Robusta coffee producer and exporter, faced a significant drought in 2016–2017, which drastically reduced production and depleted stocks. Consequently, Brazil temporarily permitted the import of one million 60‐kg bags of Robusta coffee in the spring 2017. An import ban was imposed shortly afterward due to lobbying by domestic
Hanifi Otgun   +2 more
wiley   +1 more source

When atomic-scale resolution is not enough: Spatial effects in in situ model catalyst studies [PDF]

open access: yes, 2012
We investigate transport effects in in situ studies of defined model catalysts using a multi-scale modeling approach integrating first-principles kinetic Monte Carlo simulations into a fluid dynamical treatment. We specifically address two isothermal flow setups: i) a channel flow with the gas-stream approaching the single crystal from the side, as is ...
arxiv   +1 more source

Regulating Airflow Using Hybrid LCN for Soft Pneumatic Circuits

open access: yesAdvanced Intelligent Systems, EarlyView.
To address more autonomous soft robots with embodied control and regulation systems, herein, a liquid crystal network‐based fluid regulator that can be manipulated through multiphysical stimuli is proposed. Aided by finite element modeling for thermal actuation, regulators are designed and incorporated into fluidic circuits and demonstrate that they ...
Elif Kurt   +6 more
wiley   +1 more source

“Who's breaking the law … not us, them!”: Inside immigration detention in Portugal

open access: yesAmerican Journal of Community Psychology, EarlyView.
Abstract In this paper, we examine immigration detention in Portugal, a system whose daily operations and inherent violence are overlooked in both public and academic discourses. Even within community psychology, discussions on immigration detention have largely remained on the fringes of scholarly debates. Guided by a justice‐centered ecological lens,
Francesca Esposito   +3 more
wiley   +1 more source

Deglaciation history and subsequent lake dynamics in the Siljan region, south‐central Sweden, based on new LiDAR evidence and sediment records

open access: yesEarth Surface Processes and Landforms, Volume 47, Issue 15, Page 3515-3545, December 2022., 2022
Glacial geomorphology and postglacial landforms, derived from LiDAR‐based digital terrain models, together with radiocarbon‐dated sediment sequences, form the basis for landscape reconstruction spanning c. 2000 years (10,500–8500 cal. bp). After formation of streamlined terrain and ribbed moraine tracts followed intense glaciofluvial activity at ...
Per Möller   +7 more
wiley   +1 more source

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