Universidade de Brasília

Resolving the mystery of Cyanerpes (Thraupidae) ‘black eggs’, with notes on the breeding and exaggerated displays of Hypocnemoides antbirds (Thamnophilidae)

Between the end of the nineteenth and the middle of the twentieth centuries intermittent reports of ‘black eggs’ belonging to one or more species of Passeriformes in South America were usually attributed to small-bodied tanagers of the genera Cyanerpes and Chlorophanes. Doubts co...

Prevention of sexual violence in the public university in Guatemala – qualitative survey on suggestions from students

Sexual violence is a global problem in higher education, with multiple adverse academic, social, and health outcomes. Universities can take several primary and secondary preventative actions to combat violence. The stakeholder (i.e. student) suggestions for universities have rece...

Cochlear histological changes after noise exposure: effects of melatonin and resveratrol in an experimental model

Objective To assess cochlear histological changes and the otoprotective effects of melatonin and resveratrol in Wistar rats exposed to high sound pressure levels. Methods This was a prospective, longitudinal, in vivo experimental study with heterogeneous male Wistar rats. The ani...

Task force of the Brazilian Society of Otology and the Brazilian Academy of Neurotology: Menière’s Disease

Objective To critically review the available evidence on the pathophysiology and diagnosis of Menière’s disease and to provide consensus-based recommendations developed by a task force of the Brazilian Society of Otology and the Brazilian Academy of Neurotology. Methods A task fo...

Standing up for productivity: A pilot study of short workplace activity breaks and self-perceived work ability among administrative workers

Background Office-based work has increased occupational sitting time, a behavior associated with lower work ability and poorer well-being. Brief active breaks may help mitigate these effects, but evidence from real-world workplace interventions remains limited. Objective To evalu...

Carbon Markets and Natural Climate Solutions in Brazil: Institutional Coherence Across Biodiversity, Land‐Use and Territorial Governance

ABSTRACT This study examines how natural climate solutions (NCS) are institutionalised through carbon market governance in tropical contexts, focusing on Brazil's emerging Emissions Trading System (SBCE). It contributes to debates on the effectiveness, equity and governance of na...

Does COVID‐19 Vaccination Protect Against Post‐COVID Cardiovascular Conditions?

ABSTRACT Cardiovascular diseases, such as acute myocardial infarction, heart failure, and arrhythmias, have been associated with SARS‐CoV‐2 infection, representing an important cause of long‐term morbidity and mortality. In addition to preventing primary infection, COVID‐19 vacci...

Olfactory dysfunction among gas station employees exposed to fuel vapors using digital odor identification testing

Gas station employees are chronically exposed to fuel vapors containing benzene, toluene, ethylbenzene, and xylene (BTEX), and other volatile organic compounds (VOCs), raising occupational concerns about olfactory function. In this cross-sectional study, 116 Brazilian gas station...

New Laws, Old Habits: Intelligence Reform Failure in Brazil

Third-wave democracies have adopted the standard toolkit of intelligence reform—new legal frameworks, meritocratic recruitment, and parliamentary oversight—yet domestic surveillance and political instrumentalization persist. We advance an underexplored variable to explain this ga...

Amazonian forest residues as bioenergy resources: pyrolysis behavior, kinetic triplets and model validation

Wood residues from sustainable forest management in the Amazon represent an underexploited feedstock for thermochemical conversion, yet the pyrolysis kinetics of these materials remain poorly characterized. Eleven native Amazonian species were physicochemically characterized and...

Prevalence and predictors of abnormal dyspnea during exercise in persons with type 2 diabetes: a cross-sectional study (PROTECTION trial)

Abstract Aim To determine the prevalence, characteristics, and predictors of abnormal exertional dyspnea in T2D during a maximal exercise test. Methods 97 adults with non-insulin-dependent T2D underwent spirometry, maximal upright cardiopulmonary exercise test with Borg 0–10 dysp...

Appendices for Family Constellations for All Clinical Conditions: A Systematic Review and Meta-analysis Showing a Lack of Supporting Evidence

Public appendices for the first systematic review with meta-analysis of randomised clinical trials on Family Constellation Therapy.

Andiroba Oil ( Carapa guianensis Aublet) Gel-Based Nanoemulsion: Development, Characterization, and In Vitro Evaluation in Wound Healing-Related Cells

Abstract Andiroba oil (Carapa guianensis Aublet) is widely used in traditional medicine due to its anti-inflammatory and reported wound-healing properties. In this study, we developed and characterized andiroba oil-based nanoemulsions (NeAnd) and gel-based nanostructured formulat...

Co-pyrolysis of sewage sludge and coffee husk produces NPK-enriched biochar with improved carbon stability indicators

Sewage sludge (SS) is a nutrient-rich waste, but it typically yields biochars with high ash content, low K concentration, and limited C stability. In contrast, coffee husk (CH) is a lignocellulosic residue rich in K and organic carbon. This study evaluated how co-pyrolysis of SS...

Parental acceptance of silver diamine fluoride staining in anterior and posterior teeth in Brazil

Abstract Purpose To evaluate parental acceptance of silver diamine fluoride (SDF)-related staining in anterior and posterior primary teeth and to explore associated sociodemographic factors. Methods This cross-sectional study included 103 parents or legal guardians of children wi...

Computational Design of Three-Dimensional Nitrogenated Holey Graphene Structures with Phase-Dependent Optoelectronic Properties

Abstract In this work, we propose and comprehensively characterize two novel three-dimensional nitrogenated holey graphene (3D-NHG) structures, designated as the α and β phases. These architectures are predicted through a computational protocol based on the controlled compression...

Revisiting fully residually free Demushkin groups

Abstract We establish new examples and non-examples of pro- $$p$$ p limit groups among the class of Demushkin groups, that is, pro- $$p$$ p Poincaré duality groups of dimension $$2$$ 2 .

The impact of malnutrition on clinical outcomes in patients with perianal fistulizing Crohn's disease undergoing seton placement: A retrospective study

Abstract Background Perianal involvement occurs in up to 50% of patients with Crohn's disease (CD). Despite combined management, 10%–20% require fecal diversion or proctectomy. Nutritional status may influence prognosis, but its role in fistulizing perianal disease is unclear. Th...

Measuring Monetary Policy Coordination from Central Bankers’ Speeches

Abstract We propose a forward-looking measure of implicit international monetary policy coordination based on a dynamic similarity network of central bankers’ speeches. By analyzing speech transcripts from the Bank for International Settlements database, we show that this measure...

Healthcare occupancy data as an early warning indicator of infectious disease surges in São Paulo

Early detection of infectious disease surges is critical for effective public health response, yet traditional surveillance systems often suffer from delayed reporting. Here, we investigate whether passively collected occupancy data from healthcare facilities can act as an early...