Universidade do Estado do Rio Grande do Norte

From Waste to Resource: Upcycling Spent Coffee Grounds into Biochar Functionalized with CaFe2O4 for Phosphate Removal

Abstract Eutrophication caused by excess phosphorus in water bodies represents a significant environmental challenge, requiring efficient, selective, and sustainable technologies for its mitigation. In this study, a magnetic biochar (BiMag) was developed through the valorization...

Hydrogel-based strategies for the controlled delivery of analgesic and anti-inflammatory drugs

Abstract In clinical practice, drug encapsulation is an important strategy for enhancing therapeutic efficacy and reducing adverse effects. This review critically examines how polymer origin, crosslinking strategy, swelling behavior, degradation rate, and three-dimensional networ...

Search for axions and dark photons using single molecule magnets

Molecular magnets, although analogous to familiar macroscopic magnets, offer a platform for next generation magnetic storage technologies with far higher data densities and prospective applications in quantum information science. When exposed to an external magnetic field, single...

The neglected Reinhardt’s glyptodontine from Lagoa Santa, Brazil: a reassessment of taxonomic status and description of a new species of Glyptotherium

Abstract This study reexamines a glyptodontine skull, NHMD 2045557, from Lagoa Santa, Brazil. Initially misidentified as the type of Hoplophorus euphractus by J. Reinhardt, it was later referred to Glyptodon clavipes. This identification remained unchallenged for decades. Recent...

Study of strontium hexaferrite prepared by solid state reaction using celestite and hematite

Abstract Strontium hexaferrite (SrM) powders were prepared by solid-state reaction using celestite and magnetite/hematite. Energy dispersive X-ray fluorescence spectrometry, X-ray diffractometry (XRD), scanning electron microscopy (SEM), and vibrating sample magnetometry were use...