Instituto Politécnico Nacional

Pyridine-based nitroprussides coupled to reduced graphene oxide as bifunctional pre-electrocatalysts for zinc-air batteries

This work evaluated pyridine-based transition-metal nitroprussides (TPyNP, where T = Co, Ni, or Cu) coupled with reduced graphene oxide (rGO) as tunable pre-electrocatalysts for zinc-air batteries (ZABs). Comprehensive characterization confirmed that the transition-metal identity...

Maternal Dietary B-Complex Vitamin Pattern and Risk of Complex Congenital Heart Defects in a Mexican Population

Background/Objectives: Congenital heart defects (CHDs) are among the most common congenital anomalies worldwide, and maternal nutrition during early pregnancy may influence their development. Although previous studies have mainly evaluated individual B-complex vitamins, the contr...

Climate Change Impacts on One Health Systems: A Narrative Review of Empirical Evidence and Policy Responses

ABSTRACT Background Climate change poses critical threats to human, animal, and environmental health, yet evidence on integrated One Health responses remains fragmented. Although numerous studies highlight climate‐driven health risks, many climate adaptation frameworks still unde...

Nitrogen deprivation differentially alters lipid accumulation and pyrolysis-derived volatile profiles in three microalgal species

Nitrogen deprivation (N−) is widely used to induce lipid accumulation in microalgae. However, its impact on the relationship between lipid accumulation and thermochemical behavior remains poorly understood. In this study, a comparative experimental approach was used to evaluate t...

Tinea capitis in the Americas: Epidemiological Trends and Etiological Distribution from a Systematic Review

Background: Tinea capitis remains one of the most common superficial fungal infections in children worldwide and represents an important public health concern due to its high prevalence, potential complications, and changing epidemiology. This study aimed to characterize the epid...

Sustainable Management of Air-Conditioning Systems Condensate Water Recovery

The global water crisis represents one of humanity’s most pressing challenges, with over 2 billion people lacking access to safely managed drinking water. This study presents the implementation and evaluation of an innovative air-conditioning condensate recovery system at Buildin...

Sex Differences in Oxidative Stress and Depression-Like Behavior Following Chronic Lead Exposure from Pregnancy to Adulthood

Abstract Lead (Pb) is a neurotoxic heavy metal that crosses the placental barrier and may affect fetal development. However, the effects of chronic developmental Pb exposure on oxidative stress, stress-related endocrine responses, and depression-like behavior, particularly regard...

Beyond AI-Generated Text: Strengthening Academic Integrity and Critical Thinking in Higher Education

The increasing use of Generative Artificial Intelligence in Higher Education has created new challenges for academic integrity, intellectual authorship, and the development of critical thinking. This study analyzes these challenges and evaluates a pedagogical intervention designe...

A network-driven antiviral discovery pipeline for emerging RNA viruses: a critical perspective from the Red Mexicana de Desarrollo de Antivirales (RMDA)

INTRODUCTION: RNA viruses impose a disproportionate burden of emerging and reemerging infectious diseases in Latin America, yet antiviral discovery in the region remains fragmented, target-limited, and frequently disconnected from translational pathways. This perspective discusse...

Finite Element Analysis of Stress Distribution in Healthy and Restored Mandibular Molars with Zirconia and Lithium Disilicate Crowns Under Vertical and Oblique Loading

The mechanical compatibility between dental restorative materials and the natural tooth structure is a relevant factor for long-term clinical performance. Although zirconia (yttria-stabilized tetragonal zirconia polycrystal, Y-TZP) and lithium disilicate are widely used for full-...

A geometric algebra approach to coincidence site lattices

Abstract When a lattice in Rn is superimposed on a rotated copy with coincident origins, coincidence points may arise for specific rotations, forming a coincidence site lattice (CSL). In crystallography, particularly in two and three dimensions, CSL theory is fundamental for desc...

Evaluation of Cr(III) Adsorption Using Activated Jatropha curcas Shell: Kinetics and Energy Recovery

Abstract This study investigates the potential of conditioned Jatropha curcas shell residues as sustainable and cost-effective bioadsorbents for the removal of Cr(III) from aqueous solutions. Adsorption performance was evaluated under varying conditions of pH (3.05 and 3.89), tem...

Long-term angiogenic and thromboinflammatory signatures in post-COVID-19 syndrome

Post-COVID-19 syndrome is a major long-term sequela of severe SARS-CoV-2 infection, potentially involving persistent angiogenic and thromboinflammatory dysfunction, though long-term biomarker behavior remains unclear. To evaluate the evolution of angiogenic and thromboinflammator...

Signature invariants of monomial ideals

Abstract Let I be a monomial ideal of a polynomial ring $$R=K[x_1,\ldots ,x_n]$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>R</mml:mi> <mml:mo>=</mml:mo> <mml:mi>K</mml:mi> <mml:mo>[</mml:mo> <mml:msub> <mml:mi>x</mml:mi> <mml:mn>1</mml:mn> </mml...