Publications by authors named "E Da Fonseca"
Article Synopsis
- Fast radio bursts (FRBs) are brief bursts of radio waves from distant galaxies, and their emission mechanisms are still debated, focusing on processes near a central engine versus shocks at large distances.
- Researchers measured two scintillation scales for FRB 20221022A, one linked to the Milky Way and the other to its host galaxy, which allowed them to determine the FRB's emission region size to be less than 3 x 10 kilometers.
- This size contradicts the large-distance model and suggests that the emission likely occurs close to a central compact object, supported by an observed S-shaped polarization angle, indicating a magnetospheric emission process.
Article Synopsis
- Fast radio bursts (FRBs) are intense signals from deep space that last for milliseconds and share some characteristics with pulsars, suggesting they may originate from neutron stars.
- Despite similarities, FRBs like 20221022A display different patterns in their linear polarization position angle (PA), particularly a 130° rotation that aligns with pulsar behaviors, hinting at magnetospheric origins.
- This study rules out short-period pulsars as potential sources for FRB 20221022A, supporting the idea that its unique PA evolution fits the rotating vector model commonly used for pulsars.
Evaluation of vascular photobiomodulation for orofacial pain and tension type headache following COVID 19 in a pragmatic randomized clinical trial.
Sci Rep
December 2024
This pragmatic double-blind randomized clinical trial aims to assess the impact of vascular photobiomodulation on post-COVID-19 patients experiencing tension-type headache, orofacial pain, or both persisting for more than 3 months. Participants were divided into two groups: vascular photobiomodulation (VPBM) and simulated VPBM. Their conditions were evaluated using the Brief Pain Inventory (BPI), Visual Analogue Scale, and Headache Impact Test (HIT-6).
View Article and Find Full Text PDFBackground: The usefulness of current diagnostic approaches in children with suspected autoimmune encephalitis is unknown. We aimed to assess the diagnosis of autoimmune encephalitis in clinical practice and to compare the performance of two international diagnostic algorithms (one intended for patients of any age [general], the other intended for paediatric patients), with particular emphasis on the evaluation of patients with probable antibody-negative autoimmune encephalitis because this diagnosis suggests that immunotherapy should be continued or escalated but is difficult to establish.
Methods: We did a prospective cohort study that included all patients (<18 years of age) with suspected autoimmune encephalitis recruited at 40 hospitals in Spain whose physicians provided clinical information every 6 months for 2 years or more.