Universidade de Brasília

Remote SAMsing: From segment anything to segment everything

The Segment Anything Model 2 (SAM2) produces high-quality zero-shot segmentation of natural images, but two obstacles block its use at scale for remote sensing. First, the automatic mask generator trades coverage against quality: strict acceptance thresholds leave most of a scene...

Aerial Application of Granular Potassium Chloride: Effects of Flight Height and Application Rate on Deposition Uniformity

The pursuit of greater efficiency in agricultural operations, particularly in input application, has led producers to adopt strategies aimed at minimizing production costs. Aerial fertilizer application has emerged as a viable alternative due to its high operational efficiency an...

Termites play a crucial role in forming major tropical soils: insights from a deep Ferralsol

Abstract Soil bioturbation is increasingly recognized as a key driver of pedogenesis in tropical ecosystems, influencing above- and below-ground biodiversity, nutrient cycling, and aggregate stability across different spatial and temporal scales. This ecological process may play...

Surface Topography Improvement of Micro-Milled Inconel 718 Slots Through Abrasive Deburring: Comparison Between Polishing and Sanding

Burr formation remains a major challenge in micro milling due to reduced tool dimensions and size-effect phenomena, particularly when machining difficult-to-cut materials such as Inconel 718. This study compares the effectiveness of two abrasive deburring processes, polishing and...

On the Relationship between Polysemy and Type Frequency

Zipf and others in his wake examined the relationship between polysemy and token frequency but largely neglected the relationship between polysemy and type frequency. To redress this balance, an analysis was performed of seven samples from four languages, which can be classified...

Enhanced pozzolanic activity of microcrystalline cellulose via silane modification for cementitious composites

Abstract This study evaluated the effect of surface functionalization of microcrystalline cellulose (MCC) with tetraethyl orthosilicate (TEOS) on its physicochemical properties and the performance of cement-based microconcretes incorporating the modified material. Eleven MCC samp...

Fire as a productive and preventive technology: traditional knowledge and risk governance in Kalunga agropastoral mosaics

Abstract Background Savanna landscapes have returned to the centre of socio-environmental debate as climate variability, agricultural expansion, and prohibition-oriented policies reshape how fire is understood and governed. Focusing on Brazil’s largest maroon (quilombola) territo...

A large-scale in silico chimera-based strategy for engineering low-immunogenic L-asparaginase from Penicillium cerradense

L-asparaginase (L-ASNase) is an amidohydrolase with high therapeutic value for the treatment of acute lymphoblastic leukemia (ALL). However, its clinical application is limited by immunogenicity, allergenicity, and adverse effects from glutaminase activity. In this study, we engi...