Results 61 to 70 of about 195,565 (345)

Quantitative Iron Measurements in the Basal Ganglia of NBIA Patients Using QSM: Insights From a Tertiary Center

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neurodegeneration with brain iron accumulation (NBIA) comprises rare genetic disorders characterized by predominantly extrapyramidal symptoms and iron deposition in the basal ganglia. Conventional magnetic resonance imaging (MRI) detects qualitative changes but cannot accurately quantify iron accumulation. Quantitative susceptibility
Özge Uygun   +21 more
wiley   +1 more source

Advances in Engine Efficiency: Nanomaterials, Surface Engineering, and Quantum-Based Propulsion

open access: yesMagnetochemistry
This study explores ground-breaking methods for improving engine efficiency by combining cutting-edge materials, theoretical frameworks, and alternative energy paradigms.
Mario J. Pinheiro
doaj   +1 more source

Evaluation of the environmental and economic impacts of electric propulsion systems onboard ships: case study passenger vessel

open access: yesEnvironmental science and pollution research international, 2021
The International Maritime Organization (IMO) announced that maritime transport share by 2.89% in global greenhouse gases. Electric propulsion system appears as a promising option for reducing ship emissions, especially for high-powered vessels.
Nader R. Ammar, I. Seddiek
semanticscholar   +1 more source

Data‐driven forecasting of ship motions in waves using machine learning and dynamic mode decomposition

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
Summary Data‐driven forecasting of ship motions in waves is investigated through feedforward and recurrent neural networks as well as dynamic mode decomposition. The goal is to predict future ship motion variables based on past data collected on the field, using equation‐free approaches.
Matteo Diez   +2 more
wiley   +1 more source

Symmetry breaking propulsion of magnetic microspheres in nonlinearly viscoelastic fluids

open access: yesNature Communications, 2021
Microscale propulsion impacts a diverse array of fields ranging from biology and ecology to health applications, such as infection, fertility, drug delivery, and microsurgery.
L. Rogowski   +5 more
semanticscholar   +1 more source

The Propulsion of Ships [PDF]

open access: yesScientific American, 1918
n ...
openaire   +1 more source

Chemical Rocket Propulsion [PDF]

open access: yesInternational Journal of Aerospace Engineering, 2012
1Department of Aerospace Engineering, Ryerson University, Toronto, ON, Canada M5B 2K3 2Aerophysics Branch, Air Force Research Laboratory, Edwards AFB, CA 93524, USA 3Dipartimento di Ingegneria Meccanica e Aerospaziale, Politecnico di Torino, 10129 Torino, Italy 4Department of Aeronautical Engineering, Kumaraguru College of Technology, Coimbatore, Tamil
David Greatrix   +4 more
openaire   +3 more sources

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

Beam Space Propulsion [PDF]

open access: yesSpace 2006, 2006
PurposeThe author's aim is to offer a revolutionary method – the non‐rocket transfer of energy and thrust into Space with distances of millions of kilometers.Design/methodology/approachThe author develops the theory and makes the computations.FindingsThe method is more efficient than transmission of energy by high‐frequency waves.Practical ...
openaire   +3 more sources

Infrared Neural Stimulation Elicits Distinct Molecular Pathways in Astrocytes Based on Laser Pulse Parameters

open access: yesAdvanced Biology, EarlyView.
Infrared (IR) light evokes distinct calcium and water transport responses in astrocytes, depending on stimulation duration and protocol. This study uses widefield imaging and pharmacology to reveal differential engagement of astroglial signaling pathways.
Wilson R. Adams   +7 more
wiley   +1 more source

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