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Stability and agility trade-offs in spring-wing systems.
Bioinspir Biomim
December 2024
Department of Mechanical & Aerospace Engineering, University of California, San Diego, CA, United States of America.
Flying insects are thought to achieve energy-efficient flapping flight by storing and releasing elastic energy in their muscles, tendons, and thorax. However, 'spring-wing' flight systems consisting of elastic elements coupled to nonlinear, unsteady aerodynamic forces present possible challenges to generating stable and responsive wing motion. The energetic efficiency from resonance in insect flight is tied to the Weis-Fogh number (), which is the ratio of peak inertial force to aerodynamic force.
View Article and Find Full Text PDFDouble-chambered left ventricle as a novel cause of aneurysm formation at the apex of accessory chamber.
Radiol Case Rep
October 2024
Department of Radiology, Iwate Medical University, Yahaba, Japan.
This case report shows unique aneurysm at the left ventricular apex associated with a double-chambered left ventricle (DCLV) in asymptomatic 69-year-old female. The aneurysm was located at the apex of an accessory chamber, which was formed by hypertrophied muscle band and the interventricular septum, along with a pronounced jet flow directed towards the apex aneurysm. These finding suggests that the obstruction at the base of the accessory chamber caused a pressure overload at the apex, ultimately leading to the development of the aneurysm.
View Article and Find Full Text PDFSelf-Organizing Sub-μm Surface Structures Stimulated by Microplasma Generated Reactive Species and Short-Pulsed Laser Irradiation.
ACS Omega
July 2024
Plasma Interface Physics, Ruhr-University Bochum, 44801 Bochum,Germany.
Catalysts are critical components for chemical reactions in industrial applications. They are able to optimize selectivity, efficiency, and reaction rates, thus enabling more environmentally friendly processes. This work presents a novel approach to catalyst functionalization for the CO reduction reaction by combining the reactive species of an atmospheric pressure plasma jet with the electric fields and energy input of a laser.
View Article and Find Full Text PDFD for dominant: porcine circovirus 2d (PCV-2d) prevalence over other genotypes in wild boars and higher viral flows from domestic pigs in Italy.
Front Microbiol
June 2024
Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Italy.
Introduction: Porcine circovirus 2 (PCV-2) is a key pathogen for the swine industry at a global level. Nine genotypes, differing in epidemiology and potentially virulence, emerged over time, with PCV-2a, -2b, and -2d being the most widespread and clinically relevant. Conversely, the distribution of minor genotypes appears geographically and temporally restricted, suggesting lower virulence and different epidemiological drivers.
View Article and Find Full Text PDFMotion-Aware Video Frame Interpolation.
Neural Netw
October 2024
School of Artificial Intelligence, Optics and Electronics (iOPEN), Northwestern Polytechnical University, Xi'an, China. Electronic address:
Video frame interpolation methodologies endeavor to create novel frames betwixt extant ones, with the intent of augmenting the video's frame frequency. However, current methods are prone to image blurring and spurious artifacts in challenging scenarios involving occlusions and discontinuous motion. Moreover, they typically rely on optical flow estimation, which adds complexity to modeling and computational costs.
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