Universidade Federal do Rio Grande do Sul

Revisiting Obesity Definitions: Impact of the 2025 Lancet Commission Criteria on Obesity Prevalence Among People With MASLD

Data sharing not applicable to this article as no datasets were generated or analysed during the current study.

Iron Isotopes Reveal Fe Export Driven by Change of Tropical Weathering Regime

Abstract Unraveling paleoenvironmental signals recorded in laterites is crucial for quantifying weathering‐driven elemental fluxes at the Earth's surface. New stable iron isotope data (δ 56 Fe), combined with (U‐Th)/He ages in Fe‐oxides from a ferruginous duricrust from French Gu...

A Non-Equilibrium Thermodynamic Framework for Sequential Symmetry Breaking in Driven Complex Fluids

The spontaneous emergence of macroscopic order in driven, far-from-equilibrium complex fluids lacks a generalized framework capable of bridging continuous and discrete symmetry-breaking transitions. In this study, we propose a non-equilibrium phenomenological framework that synth...

Common genetic mechanisms between obesity and COVID-19 severity: unravelling pleiotropic loci and biological pathways

Abstract COVID-19 and obesity are complex conditions marked by immune and metabolic dysfunction, with the former still ranking among the leading causes of death from infectious diseases worldwide and the latter reaching pandemic proportions. Clinical evidence consistently shows t...

Intrinsic fire safety margins in reinforced concrete columns and shear walls resulting from ambient-temperature design

Fire design procedures for RC columns and shear walls assume that structures are designed according to ambient-temperature (AT) standards, whose partial safety factors can provide an intrinsic fire safety margin. However, the magnitude of this margin in fire behavior has not yet...

Short-Term Changes, Individual Variability, and Associations with Baseline Physical Performance in Young Male Soccer Players During the Pre-Season

Monitoring physical performance during the pre-season may help coaches and practitioners interpret short-term changes in young soccer players, although group-level analyses may mask individual variability. This observational longitudinal study analyzed short-term changes, individ...

Ozonation Pretreatment to Enhance Coagulation–Flocculation and Biodegradability of Tannery Wastewater

Abstract Tannery wastewater is characterized by high organic loads, low biodegradability, and the presence of recalcitrant compounds, which hinder the efficiency of conventional treatment. In this study, ozonation was evaluated as a pretreatment step to enhance coagulation-floccu...

Oxidative stress in pigs and opportunities with selenium-containing amino acids

Modern pig farming practices, characterized by highly-productive and fast-growing genetics, early weaning, and uncontrolled factors such as heat stress and various nutritional challenges, impose cumulative stress on the animal. Elevated concentrations of reactive oxygen species w...

Comparison of Fogarty and Vollmar thrombectomy for chronic jugular thrombosis in horses

Abstract Background Chronic jugular vein thrombosis may result in persistent venous obstruction and impaired head drainage. Although surgical thrombectomy is performed in selected cases, experimental comparisons between mechanical techniques for chronic thrombus removal in horses...

Quark-gluon vertex in the complex plane

Abstract In the present work we explore for the first time the general structure and properties of the nonperturbative quark-gluon vertex in the complex plane. Specifically, we focus on the transversely-projected quark-gluon vertex that emerges from a recently developed symmetry-...

Energy-Aware Digital Twin Allocation with LLMs for Adaptive Resource Management in Cloud-Native Infrastructures

Abstract Managing containerized workloads in cloud-native infrastructures poses complex challenges due to the need to simultaneously balance performance, efficiency, and sustainability. This work proposes an adaptive resource allocation framework that leverages Digital Twins for...

Is self-reported daylight exposure reliable? A validation study with actigraphy in urban environments

Daylight exposure is an environmental determinant of human health, yet measuring real-world exposure at scale remains a major challenge. Large population studies frequently rely on self-reported time spent outdoors as a proxy for daylight exposure, although the validity of this m...

Terminology for describing the 24-h cycle of physical activity, sedentary behaviour, and sleep: a scoping review

Abstract Background Physical activity, sedentary behaviour, and sleep are three behaviours which occupy the 24-h cycle and interact to influence a multitude of health outcomes. Different terms are currently used to describe these behaviours collectively (e.g., movement behaviours...

The Zooplankton International Geospatial dataset: A global repository of spatiotemporal freshwater zooplankton community composition data from lakes and reservoirs to support ecological research

Abstract Zooplankton transfer substantial energy in aquatic food webs and are used as indicators of environmental change. Syntheses of zooplankton community dynamics globally require datasets that span a wide range of environmental gradients; however, these datasets are limited d...

Prognostic Stratification of Brain Metastases from Nonanaplastic Follicular Cell–Derived Thyroid Carcinoma: Results of an International Multicenter Retrospective Study

Background: Brain metastases (BMs) from nonanaplastic follicular cell–derived thyroid carcinoma (hereinafter referred to as non-ATC) are rare and not well characterized, with limited evidence guiding treatment and prognostic stratification. We aimed to describe clinical features,...

Role of atmospheric sulfate from industrial gypsum emissions in shaping soil solution chemistry and aluminum speciation along the soil profile

, indicating vertical redistribution driven by water fluxes. PCA identified sulfate as the primary variable governing the organization of soil solution chemistry along the soil profile. Overall, these findings demonstrate that continuous atmospheric sulfate deposition from indust...

The central role of fatigue and sleep in health behaviors during the COVID-19 pandemic

To explore the associations between perceived fatigue and various health behaviors in a Brazilian adult sample using network analysis during the COVID-19 pandemic. Data were collected via an online questionnaire between July 2020 and February 2021, including sociodemographic info...

Season-long match external loads in starters vs. non-starters in Brazilian professional women’s soccer

This study aimed to compare match external loads between starters and non-starters in Brazilian professional women’s soccer. Methods: In this prospective cohort, seventy outfield players (60.93 ± 6.10 kg; 166.39 ± 6.17 cm) from three teams competing in Brazil’s top division (Séri...

Disseminated cutaneous mast cell tumor in a South American coati (Nasua nasua)

Cutaneous mast cell tumors have been described in all species of domestic mammals. However, information about these tumors in free-ranging and captive wild mammals is limited, with no reports in procyonids. This report aims to describe a case of disseminated cutaneous mast cell t...

Pathological, microbiological, and molecular characterization of uterine samples in culled sows from farms with a history of reproductive failure in Brazil

Reproductive failure in swine herds is an important cause of production losses and increased sow culling. While many diagnostic efforts focus on abortion-derived samples, the evaluation of reproductive tracts from culled sows may provide additional insights. This study aimed to c...