Universidade Federal do Rio Grande do Norte

Plant Fibers and Bio-Based Materials for Sustainable Spacesuit Design: A Critical Review from Plant Biodiversity to Space

Human space exploration requires low-mass textiles with high mechanical strength, thermal stability, durability, and protection against extreme environmental conditions. This critical narrative review evaluates the potential of plant biodiversity as a source of fibers, biomateria...

A comprehensive scientific overview of cement stabilization additives for oil wells

Abstract Additives play a fundamental role in the cementing of oil wells by enhancing the physical and chemical properties of cement slurries. Thus, this study conducts a bibliometric analysis of scientific articles on oil well cementing over recent decades. The bibliometric anal...

Concentration‐Dependent Lamellar Organization and Structure–Property Relationships in Melt‐Processed EVA /Cloisite 20A Nanocomposites

ABSTRACT The effect of Cloisite 20A content (0–7.5 wt%) on the structural organization and thermomechanical behavior of melt‐processed EVA nanocomposites was systematically evaluated, with emphasis on clay dispersion and lamellar arrangement. X‐ray diffraction revealed a concentr...

Phenolic Compounds in Obesity and Metabolic Complications: Mechanisms, Translational Evidence and Nanoencapsulation Strategies

Obesity is associated with diabetes, dyslipidemia, cardiovascular and liver diseases, representing a major public health challenge. Phenolic compounds have attracted increasing interest due to their potential to modulate pathways involved in these conditions. However, their appli...

Beyond Methodological Noise: Robust Gut Microbiota Signals in Parkinson’s Disease via a Heterogeneous Multi-Algorithmic Framework

Background: Recent research has highlighted the role of gut microbiota dysfunctions in Parkinson’s disease (PD), which may occur decades before the onset of motor symptoms. However, methodological variability across studies and complex host–microbiota interactions limit conclusio...

Matrix Acidizing in Dolomitic Rocks: Wormhole Development and Injection Performance Analysis

Abstract Matrix acidizing is widely used to improve the productivity of carbonate reservoirs, particularly those with significant dolomitic content, which account for a substantial fraction of global hydrocarbon reserves. In this study, the pore volume to breakthrough (PVbt) beha...

Comparative Biomechanical Evaluation of SDS and Nobel Ceramic Dental Implant Systems in Type II Artificial Bone: An In Vitro Study

Ceramic dental implants have been proposed as metal-free alternatives to titanium implants. This in vitro study compared the biomechanical measurements and drilling-related surface temperatures of two commercial ceramic implant systems with different dimensions and drilling proto...

Identifying Cardiac Autoantibody Biomarkers that Predict the Severity of Chagas Cardiomyopathy

Chagas cardiomyopathy (ChCM) affects up to 30% of patients with chronic Chagas disease and lacks reliable biomarkers for severity and conduction abnormalities. We profiled cardiac autoantibodies using 2-dimensional gel electrophoresis and mass spectrometry, followed by enzyme-lin...

States of 2D Yang-Mills and large-volume entanglement

A bstract We explore the relation between geometry, topology and entanglement for quantum states in two-dimensional Yang-Mills theory. The most familiar class of states in this theory are states defined by Euclidean path integrals over Riemann surfaces. Bipartite states of this c...

Switching From Originator to Biosimilar Infliximab in Pediatric Inflammatory Bowel Disease: A Systematic Review and Meta‐Analysis

ABSTRACT Background and Aims Switching from originator infliximab to a biosimilar has become routine in adults with inflammatory bowel disease, but pediatric‐specific evidence remains limited. We aimed to evaluate the efficacy and safety of this switch in patients younger than 22...

Thermophysical Properties of [EMIM][BF4] and [EMIM][EtSO4] Mixtures with Molecular Solvents from a Charge-Transfer-Informed Force Field

Abstract Thermophysical properties of the ionic liquids 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF4]) and 1-ethyl-3-methylimidazolium ethyl sulfate ([EMIM][EtSO4]), and of their binary mixtures with acetonitrile and ethanol, were investigated by molecular dynamics s...

Chemical Fingerprinting for Authentication and Compositional Characterization of Cocos nucifera Bee Pollen

Abstract Bee pollen produced by Apis mellifera is formed by the agglutination of floral pollen grains with nectar and bee secretions. Monofloral or dominant bee pollen generally exhibits a more consistent chemical composition and quality. In this study, coconut (Cocos nucifera) b...

Anticorrosive Performance of Smart Epoxy Coatings With Poly(urea‐formaldehyde) Microcapsules Filled With 5‐Ethylidene‐2‐norbornene

In this study, poly(urea‐formaldehyde) (PUF) microcapsules filled with 5‐ethylidene‐2‐norbornene (ENB) were produced via in situ polymerization. The microcapsules were synthesized under nine different conditions, based on a sequential factorial design, and the optimal conditions...

Does governance shape local financial condition? Evidence from Brazilian municipalities

IMPACTUsing a national panel of all 5,570 Brazilian municipalities from 2018 to 2023, this study finds that stronger managerial governance, measured through planning capacity, staffing structure, and transparency, is associated with more favourable fiscal profiles across three di...

An Integrated Framework Combining Degradation-Risk Assessment and SWOT Analysis for Coastal Geoheritage Management in Portuguese Protected Areas

Coastal geoheritage is exposed to interacting natural and human pressures that require management approaches capable of linking degradation diagnosis with conservation responses. This study applies an integrated decision-support framework combining an established quantitative deg...

Type I + II seesaw model in light of the new neutrino oscillation measurements

Abstract Global analysis of neutrino oscillation data slightly favors normal mass ordering. In this work, we investigate an extended scalar sector that naturally gives rise to a type I + II seesaw mechanism after spontaneous symmetry breaking and explore the interplay between col...

Supply-chain risks and resilience mechanisms relevant to military aviation: a systematic review of defense and aerospace literature

Purpose This study synthesizes defense and aerospace supply-chain literature to identify and organize risks and resilience mechanisms relevant to the industrial, maintenance, and sustainment systems supporting military aviation, with particular attention to aircraft availability...

Academic achievement map: a clear cognitive route and a promising motor path

OBJECTIVE: This study investigates how executive functions, motor coordination, and oral discourse are related to academic performance in children from public schools in Rio de Janeiro. METHOD: This longitudinal study assessed 75 children at the beginning (T1) and at the end (T2)...

Biomass Valorization Through Applications in the Continuous Removal of Iron from Water: Batch Equilibrium and Fixed-Bed Adsorption

Iron is one of the most common constituents in groundwater, and affordable decentralized options for removing residual iron remain limited. This study valorizes two abundant agro-industrial residues, sugarcane bagasse and green coconut mesocarp, as biosorbents for removing residu...

From local hubs to regional impact: harnessing the social and solidarity economy in small-scale fisheries

Abstract The global 2030 Agenda for Sustainable Development calls for more equitable and sustainable pathways by integrating traditional communities into development efforts. Despite these ambitions, challenges persist, as many initiatives, including Social and Solidarity Economy...