Universidade Federal da Fronteira Sul

One-step production and physicochemical characterization of biodiesel using rubber seed oil blends

Abstract The seeds of Hevea brasiliensis (HB) stand out as a promising feedstock for biodiesel production owing to their high oil content. However, its elevated acid value poses a challenge, requiring pre-treatment steps before transesterification. Given this scenario, the presen...

Development of an Electrochemical Reactor Prototype for Biodiesel Production Powered by Photovoltaic Energy

Abstract The continuous increase in global energy demand has intensified the search for renewable alternatives capable of replacing fossil fuels. In this study, an electrochemical reactor prototype powered by photovoltaic energy was developed for biodiesel production from sunflow...

Occupational pesticide exposure and multidimensional risk perception among family farmers: implications for One health

Pesticide use represents an important One Health challenge due to its interconnected effects on human health, environmental quality, and food production systems. This study evaluated occupational exposure to pesticides and multidimensional risk perception among family onion farme...

Data-Driven Framework Integrating Database Analysis and Bayesian Segmented Quantile Regression to Determine Critical Nutrient Levels in Soil and Leaves of Peach Trees

Fertilization recommendations are frequently proposed by a limited number of calibration experiments conducted in a few regions, with few cultivars. Thus, recommendations concerning nutrients’ critical levels (CLs) and sufficiency ranges (SRs) are not always the most suitable one...

Intersectional racial and gender inequalities in food insecurity across socioeconomic conditions among undergraduate students: a cross-sectional study

Food insecurity is a key social determinant of health and reflects structural social inequities. In this study we examined sociodemographic and economic factors associated with food insecurity among undergraduate students, with particular emphasis on the intersections of race, ge...

Endovascular therapy versus best medical treatment in pediatric acute ischemic stroke: A systematic review and meta-analysis

Purpose This systematic review and meta-analysis evaluates endovascular therapy (EVT) versus best medical treatment (BMT) in pediatric acute ischemic stroke (AIS) due to large-vessel occlusion. Methods Systematic searches were conducted across PubMed, Cochrane, and Embase, incept...

Textile waste reinforced cementitious composites: state of the art and future perspectives

Abstract The growing textile waste from fast fashion and high consumption has increased the search for ways to reduce landfill disposal and promote circular material flows. This review analyzes the state of the art of cementitious composites reinforced with textile waste, encompa...