Universidade Federal do Rio de Janeiro

Increased salivary levels of TNF-α and IL-10 in patients with Crohn's disease

Background and objective Salivary cytokines can provide information about oral health and systemic diseases. We aimed to assess the salivary concentration of inflammatory cytokines in outpatients with Crohn's disease (CD) and whether the levels are modified by the presence of per...

An Explainable Machine Learning Framework for Hypothesis Generation in Biochemical Methane Potential Prediction

Abstract Biochemical methane potential (BMP) assays are widely used to evaluate feedstocks for anaerobic digestion, but they are slow and resource-intensive. This study evaluated whether explainable machine learning can support transparent screening and hypothesis generation from...

Shift vector sign reversal in the Alcubierre warp drive spacetime geometry and nonlinear Burgers-type dynamics

Abstract This work investigates a sign reversal of the shift vector in the Alcubierre warp drive geometry and its effect on the nonlinear reduced structure of the Einstein equations. Previous analyses showed that Burgers-type equations can arise in warp drive spacetimes, leading...

Forensic facial approximation methodologies applied to the Brazilian population: a scoping review

This scoping review aimed to map forensic facial approximation (FFA) methodologies applied to the Brazilian population. The protocol was registered in the Open Science Framework and adopted the following structure: Population, human; Concept, FFA methodologies; and Context, studi...

Inaugural editorial for Discover Condensed Matter

Welcome to Discover Condensed Matter , an international, peer-reviewed open-access journal published by Springer Nature, dedicated to disseminating research and science across all topics related to condensed matter physics and solid-state materials.

Existence and Finiteness of Equilibrium States for Partially Hyperbolic Endomorphisms

Abstract We establish the existence and finiteness of equilibrium states for a class of partially hyperbolic endomorphisms. In our first result, we assume that the central direction is simple. In the second result, we consider the case where there exists a dominated splitting alo...

Data-driven Bayesian Network structure learning for probabilistic inference of rainfall in Rio de Janeiro

Abstract Bayesian Networks (BNs) provide an interpretable probabilistic framework for modeling uncertainty in complex environmental systems. This study proposes a data-driven Bayesian Network (BN) to represent probabilistic relationships among meteorological variables and precipi...

C2/C1 Carbon–Redox Integration for Low-Carbon Production in Yarrowia lipolytica

Abstract Low-carbon production requires feedstock platforms capable of connecting waste-carbon and CO2-derived intermediates with microbial production while allowing structural carbon supply and reducing-power delivery to be tuned independently. This perspective proposes C2/C1 ca...

Impact of GLP-1 and GLP-1/GIP receptor agonists before, during, and after pregnancy: a narrative review

Glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic peptide (GIP) receptor agonists (GLP-1RA and GIP-RA) are a class of medications that mimic the endogenous effects of GLP-1 and have gained increasing attention due to their substantial clinical potential. Origin...

For-me-ness: a critical assessment of the phenomenal mineness thesis

This paper examines the claim that the phenomenal "for-me-ness" is the core feature of every conscious experience. Any conscious episode is intrinsically given as mine, and this mineness, while non-reflective and non-cognitive, belongs to the personal and phenomenal level. The co...

Intramedullary injection of polymerized laminin in acute traumatic spinal cord injury: a first-in-human pilot study

Abstract Study design Investigator-initiated, single-arm, first-in-human pilot study. Objectives To evaluate the safety and feasibility of intramedullary administration of polymerized laminin in individuals with acute complete spinal cord injury (SCI). Setting Public and private...

Evaluating the mud filtrate on the well-seismic tie and its impacts on elastic properties using Gassmann modeling and sparse-spike deconvolution in the Norne field

Abstract The well-seismic tie process is critical for integrating well and seismic data to achieve accurate subsurface interpretations. While previous studies have investigated the influence of mud filtrate invasion on well-log responses, its impact on seismic calibration remains...

Violence, Stigma, and Moral Injury in Nursing During the COVID‐19 Pandemic: A Qualitative Analysis From 18 Countries in Latin America and the Caribbean

Workplace violence against nurses and midwives intensified during the COVID-19 pandemic, exposing and amplifying longstanding structural marginalization in health systems across Latin America. This study analyzes how different forms of violence were experienced and described by n...

Florence Nightingale's Contemporary Legacy for Patient Safety: Implications for Nursing and Public Health

This paper critically examines Florence Nightingale's legacy and its ongoing relevance to contemporary patient safety. Drawing on Notes on Nursing, the study highlights Nightingale's emphasis on hygiene, cleanliness, environmental factors, and systematic care as foundational to r...

The bulging pancreas: unmasking causes beyond autoimmunity—an imaging-based approach to diffuse pancreatic enlargement

Abstract Diffuse pancreatic enlargement is frequently attributed to autoimmune pancreatitis (AIP), but several benign, genetic, inflammatory, including acute interstitial edematous pancreatitis, and malignant entities can produce a similar imaging appearance. This review provides...

Associated factors for COVID-19 mortality among children and adolescents in Rio de Janeiro state, 2020–2023

Children and adolescents with COVID-19 typically present milder symptoms of the infection, with fatal outcomes being rare. This study aimed to analyze the main associated factors for mortality in this population group. A cross-sectional study was performed to analyze reported COV...