Universidade Tecnológica Federal do Paraná

Influence of Fe and Zn Loading and Calcination Temperature on Sol–Gel-Derived TiO2 Photocatalysts for Food-Industry Effluent Treatment

Fe/Zn-modified TiO2 photocatalysts were synthesized by the sol–gel method to investigate the influence of Fe loading, Zn loading, and calcination temperature on the degradation of food-industry pollutants. A 23 factorial design combined with Response Surface Methodology was emplo...

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...

Time-reversal symmetric quadratic differential systems having an invariant cylinder: global dynamics and mechanical application

Abstract This paper provides a comprehensive analysis of the global dynamics and an exact mechanical application for a class of time-reversal symmetric quadratic differential systems in $$\mathbb {R}^{3}$$ R 3 having an elliptic cylinder as an invariant algebraic surface. A norma...

From IT-enabled organisational transformation to digital transformation: leadership strategies for value creation in manufacturing

Digital Transformation (DT), which encompasses Industry 4.0 and Industry 5.0, has been conceptualised and often paralleled with IT-Enabled Organizational Transformation (ITOT) by academia and practitioners. Despite their shared foundation in organisational transformation, the goa...

From Host–Guest to Crystal Interactions: Proposing Crystallization Mechanisms for a Novel β-CD/TTA-H Structure and Related Cyclodextrin Inclusion Complexes

Abstract Cyclodextrin inclusion complexes (ICs) have been extensively studied for their capacity to modulate the physicochemical properties of guest molecules, albeit their solid-state organization has been comparatively less explored. In particular, the relationship between host...

Extensão Rural Agroecológica: experiências e limites

The article begins with a theoretical approach on the construction of a proposal of Rural Agroecological Extension (ERA), then links the theoretical aspects of the ERA and empirical data of a network ATER, analyzing nine projects of Technical Accompaniment and Rural Extension dev...

An Ordinal Learning Framework for Modeling Perceived Indoor Environmental Quality Dissatisfaction in University Classrooms: A CORAL-Based Approach with Benchmark Model Evaluation

Indoor environmental quality (IEQ) strongly influences occupant well-being and teaching conditions in educational buildings. This study proposes the Predicted Probability of Dissatisfaction Index (PPDieq.prof), a probabilistic ordinal learning framework based on the Consistent Ra...