Instituto Federal do Maranhão

Thermal Cycle–Microstructure–Property Relationships in Rail Steel Heat‐Affected Zone Simulated by Gleeble

This study investigates the microstructural evolution and mechanical response of premium rail steel subjected to heat‐affected zone (HAZ) thermal cycles representative of flash butt welding (FBW). Dilatometry experiments were performed using a Gleeble thermomechanical simulator....

Universal Collapse III: Structural Sufficiency, Equivalence Fibers, and Minimal Structural Extension

This work investigates whether a compact set of local scalar-geometric quantities is sufficient to characterize structural classes in the framework of Universal Collapse. The candidate signature Σ* = (C, X², type(X), I₂, J) is tested constructively through the geometry of its fib...

The Multiscale Geometry of Riemann Zeta Zeros: Pairwise Scale Structure and Low-Dimensional Organization

The nontrivial zeros of the Riemann zeta function have been extensively studied through the statistical properties of their normalized spacings. In this work, we investigate a different structural representation based on the multiscale behavior of consecutive Riemann zeta-zero sp...

Green Chemistry Oriented Pluronic F127/Carbopol Nanogel Platform (NGLp) Encapsulating Lippia pedunculosa Essential Oil for Aedes aegypti Larval Control

Abstract Control of Aedes aegypti larvae is essential to reduce arbovirus transmission; however, increasing insecticide resistance and environmental concerns highlight the urgent need for sustainable alternatives. In this study, a solvent-free thermoresponsive nanogel (NGLp), bas...

Comparative study of basic and interleaved pixel toolpaths in wire arc additive manufacturing

<title>Abstract</title> Additive Manufacturing (AM) has become increasingly prominent in the transition from rapid prototyping to the production of end-use components, particularly in metal manufacturing, due to its ability to fabricate geometrically complex parts with high dimen...

The Emergent Geometry of Goldbach Spaces: A Deterministic Computational Investigation

This preprint presents a deterministic computational investigation of the collective geometry of Goldbach Spaces. Instead of studying individual Goldbach decompositions, the work introduces a geometric representation that transforms each Goldbach Space into a normalized profile s...