R K Souza

Marine derived bacteria from restinga ecosystems as a platform for antibiofilm agents and next-generation postbiotics and probiotics (NGPPs)

Leidy J. García Maza, R K Souza, Deisiane Fernanda da Rosa, Walter Orlando Beys-da-Silva et autres

Marine derived bacteria are a rich source of bioactive compounds that have the potential to be used in the control of infectious diseases and as Next-Generation Postbiotics and Probiotics (NGPPs). However, their antibiofilm activity against major human pathogens remains understudied. This study …

br (code pays fourni par la source)

Impact of Vitamin A Deficiency on Cortical and Hippocampal Biochemical Pathways and the Restorative Potential of Attalea phalerata Pulp Oil

Elaine Cristina de Lara Spada, Daniela de Souza Vial Dahmer, Edgar Willibaldo Allebrandt Neto, Wéliton Barreto Da Silva et autres

International audience

Blowing Star Formation Away in Active Galactic Nucleus Hosts. V. The Feeding–Feedback Cycle in Local Active Galactic Nuclei as Revealed by their Stellar Populations

Rogério Riffel, Rogemar A. Riffel, Gabriel L. Souza-Oliveira, Nadia L. Zakamska et autres

Abstract We present a spatially resolved analysis of the stellar populations in the inner kiloparsec of NGC 3884, 3C 293, and CGCG 012-070. Using near-infrared spectroscopy, we reconstruct their star formation histories (SFHs) by comparing the M13, XSL, and FSPS stellar population …

br, us, es, gb (code pays fourni par la source)

The Hidden Geometry of Astrophysical Spectra: Path-Signatures of Line Profiles

R K Souza, Severin Bunk

The morphology of a spectral-line profile contains information beyond scalar summaries of line strength, centroid, width, global asymmetry, or diagnostic line ratios. Broad wings, shoulders, double peaks, secondary components, and composite emission--absorption structures encode how flux is ordered across wavelength but can …

EH-FedSAG: Variance-Reduced Federated Learning with Energy-Aware Participation in Energy-Harvesting IoT

Shahab Jahanbazi, Mateen Ashraf, R K Souza, Onel L. A. Lopez

Federated learning (FL) in energy-harvesting (EH) networks is challenged by intermittent and stochastic energy arrivals that lead to unstable device participation across training rounds, and by high communication costs under limited energy budgets, reducing overall training efficiency. This paper studies FL under …

fi, br (code pays fourni par la source)

Contrast-Informed Augmentation and Domain-Adversarial Training for Adult-to-Neonatal MR Reconstruction Generalization

Stephen Moore, Lara Leijser, Richard Frayne, R K Souza

Purpose: To investigate whether contrast-informed data augmentation and domain-adversarial training improve the adult-to-neonatal generalization of the E2E-VarNet. Methods: Three training regimes were investigated: (1) adult-only training with unaugmented adult data, (2) mixed training with paired unaugmented and neonatal-informed augmented adult data, and …

us, ca (code pays fourni par la source)

sagui : SED-based segmentation of multiband Galaxy images – application to JADES in GOODS-South

R K Souza, Andressa Wille, Shravya Shenoy, Aarya A Patil et autres

ABSTRACT We present sagui, a modular framework for the analysis of multiband imaging data in spatially resolved galaxies, with synergies to integral-field spectroscopy (IFS). Building on the spectro-spatial paradigm introduced by capivara for IFS data, sagui extends this approach to imaging data …

us, br, gb, de, au, cl, fr (code pays fourni par la source)

Possibilidades de uso de Aplicativos na Prática da Aprendizagem Criativa, na perspectiva da Cultura Maker

Ademilson Marques de Oliveira, Raquel Salcedo Gomes, R K Souza, José Valdeni de Lima et autres

O artigo aborda a integração de aplicativos em contexto educacional, com foco na aprendizagem criativa na cultura maker, destacando a importância dessas ferramentas na promoção da aprendizagem criativa na educação atual e investigando como essas ferramentas podem contribuir para o processo de …

br (code pays fourni par la source)

P213 High prevalence and risk factors for nonalcoholic fatty liver disease in patients with Crohn's disease

Cecília Dias Flores, R K Souza, Laura Renata de Bona, Mariana Dall’Agnol Deconto et autres

Abstract Background Prevalence of Non-Alcoholic Fatty Liver Disease (NAFLD) is increasing in patients with Inflammatory Bowel Disease (IBD), particularly Crohn's Disease (CD). Despite this, the mechanisms and risk factors of NAFLD in IBD are still poorly understood and controversial. The aim of …

br (code pays fourni par la source)

Gaia Data Release 2. The celestial reference frame (Gaia-CRF2)

F. Mignard, S. A. Klioner, L. Lindegren, J. Hernández et autres

Context. The second release of Gaia data (Gaia DR2) contains the astrometric parameters for more than half a million quasars. This set defines a kinematically non-rotating reference frame in the optical domain. A subset of these quasars have accurate VLBI positions that …