Universidade Federal do Pampa

Seismites as Sedimentary Records of Geological Cataclysms

Seismites are soft-sediment deformation structures (SSDS) formed in situ within unconsolidated sedimentary layers due to recurrent seismic shocks. Inserted in the domains of event stratigraphy and paleoseismology, these features record ancient cataclysmic events and regional tect...

Effects of the Glycerol/Quercetin Ratio on the Structure and Tensile Behavior of PVA-Based Films

Poly(vinyl alcohol) (PVA)-based films containing glycerol and quercetin were prepared by casting as potential active-packaging materials. The effects of the glycerol/quercetin ratio on structural, thermal, mechanical, barrier, and antioxidant properties were investigated. Neat PV...

Combined effects of kombucha consumption and aerobic exercise on oxidative stress and metabolic parameters in Wistar rats

Abstract Background Kombucha, a fermented tea containing symbiotic bacteria and yeast, and aerobic exercise each confer distinct health benefits, but their combined effects remain poorly understood. This study investigated the combined effects of consuming kombucha fermented for...

Dual-task effects on the kinematics of treadmill running at different speeds in runners and non-runners

Abstract Background Dual tasking (DT) occurs when secondary cognitive tasks divide attention with a motor task. Such a condition may influence kinematics during locomotor tasks, but its effects on running kinematics remain controversial among people with varying levels of experie...

Customer influence on value delivery in agricultural product development: the Brazilian farmers' perspective

Purpose This study aims to quantify the value delivery attributes of an innovative model of grain drying machine, focusing on its potential to enhance sustainability and efficiency in Brazilian agriculture. Design/methodology/approach This study employs a mixed-method approach, i...

Multifunctional NaNbO3: Photocatalytic Degradation of Methylene Blue and Intrinsic Antimicrobial Activity against Enterococcus faecalis and Candida albicans

Abstract In this paper, sodium niobate (NaNbO3) was synthesized by the microwave-assisted hydrothermal method at 150 °C for 70 min, followed by calcination at 550 °C for 2 h. X-ray diffraction revealed the coexistence of orthorhombic P21ma and Pbma phases, while scanning electron...

From screen to purpose: meaningful IT work

Purpose This study investigates the dimensions that shape the meaning of work for Information Technology (IT) professionals in Rio Grande do Sul, Brazil, and analyzes the relationships among these dimensions, job satisfaction, and intention to remain in current roles. Design/meth...

South Brazilian Amber Propolis: Chemical Profile, and Antioxidant, Antimicrobial and Antileukemic Activities

This study introduces “amber propolis,” a unique variety from the Pampa biome in southern Brazil, characterized by a distinct chemical fingerprint and high biological potency. The composition was comprehensively analyzed via GC-MS and LC-MS/MS; biological activity was evaluated t...

Structure–Property–Durability Relationships in Grape-Derived Pectin/Kraft Lignin Films Before and After Accelerated UV Aging

Pectin films are promising renewable materials for biodegradable coatings; however, their high hydrophilicity and limited resistance to ultraviolet (UV) radiation restrict practical applications. This work investigated the influence of kraft lignin (0–5 wt%) on the structure–prop...

Ceramic composites derived from rice husk silica: influence of a low amount of steel fibres

The development of new materials using residues contributes to minimizing environmental degradation with the possibility of improving properties and reducing production costs. In this perspective, the present work aims to develop a composite material replacing refractory clay wit...

Acute Foot Warming Enhances Plantar Tactile Sensitivity With Limited Postural Control Effects in Obese Older Adults

ABSTRACT Background and Purpose Interventions to enhance tactile sensitivity, such as warming the feet, positively affect skin sensitivity with varying influence on postural control. Here, we hypothesize that foot warming may benefit tactile sensitivity and postural control in ol...

Contornos e desafios da diversificação produtiva em áreas de cultivo de tabaco entre jovens rurais no território gaúcho

The tobacco production and productive diversification have gained ground and generated controversy in the contemporary challenges of rural development. In this sense, the article aims, from the reality of two cities in the state, the Tiger Brook and São Lourenço do Sul, to analyz...

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...

Case Studieson Sample Preparation with Diluted Acidfor Elemental Determination

Abstract Green chemistry provides a framework for redesigning laboratory practices to reduce environmental and safety impacts. In elemental analysis, replacing highly concentrated acids during sample preparation represents an important step toward more-sustainable practices. This...

Geophysical modeling in a drainage basin with a gold geochemical anomaly, Cerro da Cria Region, Vila Nova do Sul, Rio Grande do Sul (Brazil)

Gold plays a central role in the global economy as a store of value, a strategic asset, and an important raw material for industrial and technological applications. In mineral exploration, geochemical prospecting allows the delineation of anomalous drainage basins and the identif...