Results 91 to 100 of about 73,757 (273)

System Identification of Robotic Fish Swimming Reveals Roles of Reactive and Resistive Fluid Force in Two Distinct Swimming Gaits

open access: yesAdvanced Intelligent Systems, EarlyView.
System identification and particle image velocimetry reveal how a modular robotic fish changes thrust physics across gaits. A traveling‐wave, fish‐like motion draws thrust from resistive drag, while a resonant standing‐wave motion is driven by reactive pressure.
Donghao Li   +4 more
wiley   +1 more source

El papel de las mujeres socialistas en los organismos internacionales durante los años treinta

open access: yesHispania, 2018
El artículo analiza la presencia de las mujeres del sindicato socialista UGT en los organismos internacionales del período de entreguerras, la OIT, la SDN y la FSI, en especial durante la II República española, explicando las posturas de la UGT y sus ...
Pilar Domínguez Prats
doaj   +1 more source

Liquid Jetting‐Based Miniature Robotic Navigation in Confined Fluidic Spaces

open access: yesAdvanced Intelligent Systems, EarlyView.
We introduce a new class of liquid‐jetting‐based miniature robots (JetBots) ranging in size from mm‐to‐cm, featuring a unified approach in design, fabrication, and actuation. They demonstrate fast locomotion (30.3 cm/s), rapid steering (648.8°/s), and diverse functions, such as puncturing soft materials and unlimited cargo sampling and delivery, paving
Debasish Roy, Tianlu Wang
wiley   +1 more source

The reaction 2H(p,pp)n in three kinematical configurations at E_p = 16 MeV

open access: yes, 2004
We measured the cross sections of the $^2$H(p,pp)n breakup reaction at E$_p$=16 MeV in three kinematical configurations: the np final-state interaction (FSI), the co-planar star (CST), and an intermediate-star (IST) geometry.
A. Imig   +12 more
core   +1 more source

The Herfindahl neutral point: A firm‐level threshold for managing market concentration with evidence from US hog packing

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract This paper derives a firm‐level threshold, the Herfindahl Neutral Point, from the standard concentration index used in merger review. At this threshold, a marginal expansion leaves the index unchanged. Firms below the threshold reduce concentration when they expand; firms above it increase concentration.
Andrew J. Keller, Krishna P. Paudel
wiley   +1 more source

Rationale Formulierung von Elektrolyten auf Ether‐Lacton‐Basis für sichere und nachhaltige nickelreiche Lithium‐Ionen‐Batterien

open access: yesAngewandte Chemie, EarlyView.
Diese Studie berichtet über die Formulierung neuartiger Elektrolyte zur Verbesserung von Sicherheit, Nachhaltigkeit und Kompatibilität mit nickelreichen Kathoden durch den Einsatz eines biobasierten Lösungsmittels (γ‐Valerolacton, GVL) sowie eines sicheren und stabilen Hilfslösungsmittels (Diethylenglycolbutylethylether, DEGBEE).
Juan Luis Gómez‐Urbano   +17 more
wiley   +1 more source

A fully coupled analysis of unsteady aerodynamics impact on vehicle dynamics during braking

open access: yesEngineering Applications of Computational Fluid Mechanics, 2019
This study investigates the impact of unsteady aerodynamic loads on the behavior of car dynamics during braking maneuvers. In the analysis, two independent solvers were coupled to solve an existing fluid structure interaction (FSI) problem. Transient CFD
Jakub Broniszewski, Janusz Piechna
doaj   +1 more source

Rational Formulation of Ether‐Lactone Electrolytes for Safe and Sustainable Ni‐Rich Lithium‐Ion Batteries

open access: yesAngewandte Chemie International Edition, EarlyView.
This study reports the formulation of innovative electrolytes to improve safety, sustainability, and compatibility with Ni‐rich cathodes through the use of a bio‐based solvent (γ‐valerolactone, GVL) and a safe, stable, innovative co‐solvent (diethylene glycol butyl ethyl ether, DEGBEE).
Juan Luis Gómez‐Urbano   +17 more
wiley   +1 more source

Numerical simulation of the flow rate regulator valve using OpenFOAM

open access: yesТруды Института системного программирования РАН, 2018
The results of methodical investigation, aimed on testing of the performances of free opensource CFD toolbox OpenFOAM in the field of simulation of hydraulic units’ dynamics using Finite Volume Method and dynamic meshes are presented.
V. G. Melnikova   +2 more
doaj   +1 more source

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