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Visual collective behaviors on spherical robots.
Bioinspir Biomim
January 2025
Aix Marseille Université, CNRS, ISM, Marseille 13288, France.
The implementation of collective motion, traditionally, disregard the limited sensing capabilities of an individual, to instead assuming an omniscient perception of the environment. This study implements a visual flocking model in a 'robot-in-the-loop' approach to reproduce these behaviors with a flock composed of 10 independent spherical robots. The model achieves robotic collective motion by only using panoramic visual information of each robot, such as retinal position, optical size and optic flow of the neighboring robots.
View Article and Find Full Text PDFContinuous Chelation Reduces Instrumentation Time and Straightening of Double-curved Simulated Root Canals in Bovine Dentin.
J Endod
December 2024
Division of Endodontology, Department of Conservative and Preventive Dentistry, Center for Dental Medicine, University of Zurich, Zurich, Switzerland. Electronic address:
Introduction: Adding a compatible chelator to the sodium hypochlorite (NaOCl) solution applied during instrumentation may affect shaping efficacy and canal transportation. This was studied in simulated double-curved root canals.
Methods: High-precision computer numerical control milling was used to recreate standardized S-shaped canals from a resin training block in longitudinally sectioned bovine incisor roots.
Background: Most olecranon fractures are intra-articular, affecting the extensor mechanism of the elbow, and are treated surgically with dorsal plate fixation or tension band. Due to shortcomings of dorsal plates related to prominence, insufficient fixation of sagittal fracture lines, and difficulty matching proximal ulna dorsal angulation (PUDA), dual medial and lateral plating (DP) has been developed. We hypothesized that olecranon fractures treated with DP would have low complication rates and low incidence of hardware removal compared with those treated with traditional methods of fixation.
View Article and Find Full Text PDFOscillometric blood pressure measurements on smartphones using vibrometric force estimation.
Sci Rep
October 2024
Electrical and Computer Engineering, UC San Diego, La Jolla, CA, USA.
This paper proposes a smartphone-based method for measuring Blood Pressure (BP) using the oscillometric method. For oscillometry, it is necessary to measure (1) the pressure applied to the artery and (2) the local blood volume change. This is accomplished by performing an oscillometric measurement at the finger's digital artery, whereby a user presses down on the phone's camera with steadily increasing force.
View Article and Find Full Text PDFThe Panflute Technique: Novel 3D-Printed Patient Specific Instrumentation to Guide Curved Intra-Articular Osteotomies for Tibial Plateau Malunions.
J Clin Med
October 2024
3D Lab, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands.
: 3D patient-specific corrective osteotomies are optimized for use with oscillating saws, thereby rendering it incapable of executing curved osteotomies. The aim of this technical note is to introduce and evaluate the Panflute technique, which facilitates curved osteotomies with precise depth control for intra-articular corrective osteotomies in posttraumatic tibial plateau malunions. : A 33-year-old male patient with an intra-articular malunion was treated one year after index surgery of a lateral split-depression tibial plateau fracture with the Panflute technique.
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