Mechanical oscillations in a circular loop

1996 ◽  
Vol 64 (8) ◽  
pp. 1077-1078
Author(s):  
Y. K. Vijay
Keyword(s):  
Circular Loop ◽  
Mechanical Oscillations

scholarly journals Evaluation of the Circularity of Recycled PLA Filaments for 3D Printers

2020 ◽  
Vol 10 (24) ◽  
pp. 8967
Author(s):  
Victor Gil Muñoz ◽  
Luisa M. Muneta ◽  
Ruth Carrasco-Gallego ◽  
Juan de Juanes Marquez ◽  
David Hidalgo-Carvajal
Keyword(s):  
Circular Economy ◽  
Protective Equipment ◽  
Fused Filament Fabrication ◽  
Circular Loop ◽  
Material Supply ◽  
3D Printers ◽  
3D Printed ◽  
Circular Economics ◽  
High Level ◽  
Additional Value

The circular economy model offers great opportunities to companies, as it not only allows them to capture additional value from their products and materials, but also reduce the fluctuations of price-related risks and material supply. These risks are present in all kind of businesses not based on the circular economy. The circular economy also enables economic growth without the need for more resources. This is because each unit has a higher value as a result of recycling and reuse of products and materials after use. Following this circular economics framework, the Polytechnic University of Madrid (Universidad Politécnica de Madrid, UPM) has adopted strategies aimed at improving the circularity of products. In particular, this article provides the result of obtaining recycled PLA filament from waste originating from university 3D FFF (fused filament fabrication) printers and waste generated by “Coronamakers” in the production of visors and parts for PPEs (Personal Protective Equipment) during the lockdown period of COVID-19 in Spain. This filament is used in the production of 3D printed parts that university students use in their classes, so the circular loop is closed. The obtained score of Material Circularity Indicator (MCI) of this material has been calculated, indicating its high level of circularity.

scholarly journals Mechanical oscillations enhance gene delivery into suspended cells

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Z. L. Zhou ◽  
X. X. Sun ◽  
J. Ma ◽  
C. H. Man ◽  
A. S. T. Wong ◽  
...  
Keyword(s):  
Gene Delivery ◽  
Mechanical Oscillations ◽  
Suspended Cells

A Performance Comparison of Three Topologies of Circular Loop Antennas Transmitting Systems

2021 ◽  
Author(s):  
Ferdaous Abderrazak ◽  
Eva Antonino-Daviu ◽  
Larbi Talbi ◽  
Miguel Ferrando-Bataller
Keyword(s):  
Performance Comparison ◽  
Circular Loop ◽  
Loop Antennas ◽  
A Performance

scholarly journals Mechanotendography in Achillodynia shows reduced oscillation variability of pre-loaded Achilles tendon: a pilot study

2020 ◽  
Vol 30 (2) ◽  
pp. 247-257
Author(s):  
Laura Schaefer ◽  
Frank Bittmann
Keyword(s):  
Achilles Tendon ◽  
Rank Correlation ◽  
Achilles Tendinopathy ◽  
The Body ◽  
Mechanical Pressure ◽  
Mechanical Oscillations ◽  
Pressure Impact ◽  
The Subject ◽  
The Mean ◽  
Intrapersonal Variability

The present study focuses on an innovative approach in measuring the mechanical oscillations of pre-loaded Achilles tendon by using Mechanotendography (MTG) during application of a short yet powerful mechanical pressure impact. This was applied on the forefoot from the plantar side in direction of dorsiflexion, while the subject stood on the ball of the forefoot on one leg. Participants with Achilles tendinopathy (AT; n = 10) were compared to healthy controls (Con; n = 10). Five trials were performed on each side of the body. For evaluation, two intervals after the impulse began (0-100ms; 30-100ms) were cut from the MTG and pressure raw signals. The intrapersonal variability between the five trials in both intervals were evaluated using the arithmetic mean and coefficient of variation of the mean correlation (Spearman rank correlation) and the normalized averaged mean distances, respectively. The AT-group showed a significantly reduced variability in MTG compared to the Con-group (from p = 0.006 to p = 0.028 for different parameters). The 95% confidence intervals (CI) of MTG results were disjoint, whereas the 95% CIs of the pressure signals were similar (p = 0.192 to p = 0.601). We suggest from this work that the variability of mechanical tendon oscillations could be an indicative parameter of an altered Achilles tendon functionality.

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