Publications by authors named "J F Mazoyer"
Article Synopsis
- Optical aberrations in telescopes prevent them from achieving their best possible clarity, but these can be corrected using deformable mirrors guided by real-time data about the aberrations from images.
- Current methods for detecting these aberrations depend on potentially flawed physical models, which can hinder the correction process.
- This study proposes a new approach using model-free reinforcement learning to improve the estimation and correction of aberrations using phase diversity images, showing effective performance even under various conditions and noise levels.
Article Synopsis
- Recreational use of nitrous oxide (NO) has led to a rise in severe neurological disorders, particularly affecting young adults in economically disadvantaged areas.
- The study analyzed 181 patients, noting a significant incidence increase in 2020-2021, especially in those aged 20-25.
- Compared to other inflammatory neurological disorders, NI-NDs were found to be two to three times more common in these vulnerable populations.
Clinical and Radiological Follow-Up of a Pfizer-BioNTech COVID-19 Vaccine-Induced Hemichorea-Hemiballismus.
Tremor Other Hyperkinet Mov (N Y)
June 2022
Background: Hemichorea-hemiballismus is a rare hyperkinetic movement disorder.
Case Report: A 90-year-old male developed left hemichorea-hemiballismus after his second dose of the Pfizer-BioNTech COVID-19 vaccine. A wide range of investigations including magnetic resonance imaging did not reveal an alternative cause.
To better understand the migration properties of hybrid carrageenan from the seaweed tissue during carrageenan extraction, the effect of increasing the seaweed surface area by the mechanical disintegration of gametophyte chips was studied under various temperature and time extraction conditions. Dried seaweed chips were milled by a rotor beater mill and classified into eight different size fractions by sieving with varying mesh sizes from 50 to 2000 μm. During extraction at 22 °C, the red color of the filtrate increased significantly with the decreasing particle size of the fraction, correlating with the increasing phycoerythrin concentration (from 0.
View Article and Find Full Text PDFIntroduction: Recreational use of nitrous oxide (NO) is a growing practice in France and all around the world and is often associated with neurological complications. We report detailed clinical and paraclinical presentations of 12 patients with combined degeneration of the spinal cord and peripheral neuropathies in relation to NO consumption, possibly favored by lockdowns due to SARS-CoV-2 pandemic.
Results: With variable levels of consumption, the 12 patients presented spinal cord and/or peripheral nerve damage, with mostly motor and ataxic symptoms, motor axonal nerve damage, and medullary T2-weighted hyperintensities on MRI.