Instituto Politécnico Nacional

N-Nitrosodiethanolamine Degradation in Water by Ag/TiO2 and Ag/SiO2 Under Natural Solar Light

On 304 stainless steel substrates, two combined systems based on silver particle semiconductors, Ag/TiO2 and Ag/SiO2, were formed. Such systems were applied in the photocatalytic degradation, profiting from sunlight, of nitrosamines, which are highly toxic substances, specificall...

Advanced oxidation processes for 2,4-dichlorophenoxyacetic acid in aqueous media: evidence gaps, mechanistic insights and emerging directions

Abstract The herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) remains a relevant aquatic contaminant because parent-compound disappearance does not imply mineralization, detoxification or treatment readiness. This systematic review synthesizes recent evidence on advanced oxidatio...

Potentially Toxic Elements in Urban Dust of Tlaxcala, Mexico: Pollution Levels and Human and Ecological Risk Assessment

The city of Tlaxcala, located in central Mexico, is a small region with high industrial activity that releases potentially toxic elements (PTEs) into the environment. This study investigated the concentration, distribution, contamination levels, and human and ecological health ri...

Genomic Diversity, Phylogenetic Structure, and In Silico Diagnostic Primer Compatibility of Available DENV-1 Genotype V from Mexico

Background: Dengue virus serotype 1 (DENV-1) is prevalent across the Americas, yet its genomic diversity in Mexico is poorly characterized. Methods: We analyzed 119 public Mexican DENV-1 genomes (polyprotein CDS, 10,179 nt) alongside 111 from 19 other American countries and terri...

Symmetry-Based Reformulation of the Gravity Sensitivity Matrix for Efficient Regional-Scale Gravity Imaging

Regional-scale gravity imaging is limited by the size of the sensitivity matrix: a direct three-dimensional formulation of the gravity operator requires on the order of 1013 coefficients, making explicit storage infeasible on standard hardware. We exploit two symmetry properties...

Oxidative Stress in Lactuca sativa L.: Cellular Mechanisms, Stress Responses, and Mitigation Strategies

Lettuce is a vegetable crop of major importance in the global diet due to its low caloric content and high levels of fiber, minerals, vitamins, and antioxidant compounds. China is the world’s leading lettuce producer, accounting for more than 50% of global production. However, cl...

Evolving Perspectives on Glutamate Receptors: From Molecular Plasticity to Neuro-Physiological Diversity

Glutamate receptors constitute one of the most structurally diverse and functionally versatile families of signaling proteins in the animal kingdom, mediating the primary excitatory neurotransmission in the vertebrate central nervous system while also fulfilling ancestral roles i...

Analysis of Tap Water Quality in Victoria City, Tamaulipas, México, Using Traditional and Molecular Approaches to Identify Microorganisms

Tap water quality is a critical public health concern because microbiological contamination in water distribution systems may pose risks to consumers. Therefore, this study seeks to integrate conventional and molecular approaches. Traditional methods, including the Most Probable...

Associations of Physical Activity, Sedentary Behavior, and Handgrip Strength with Clinical Characteristics in Women with Rheumatoid Arthritis from Western Mexico

Background: Rheumatoid arthritis (RA) is a chronic autoimmune disease that affects synovial joints and leads to functional impairment. Modifiable factors such as physical activity (PA), sedentary behavior (SB), and handgrip strength (HGS) may influence clinical and functional out...

Newly Isolated Kluyveromyces marxianus Strain Capable of Producing Oleic Acid-Rich Oil for Human Consumption from Whey

Cheese whey is a widely available agri-food byproduct whose high organic load presents significant challenges for the dairy industry and environmental management. Its biovalorization into high-value, sustainable functional lipids is increasingly important given the environmental...

A Proposed Convergent Genetic and Molecular Framework for Legg–Calvé–Perthes Disease: A Scoping Review

Legg–Calvé–Perthes disease (LCPD) is a rare pediatric disorder characterized by avascular osteonecrosis of the femoral head. Its pathogenesis is multifactorial, and genetic, epigenetic, vascular, and inflammatory mechanisms may contribute to disease susceptibility and progression...

Click Bioconjugation of Aza‐BODIPY Fluorophores to LfcinB Peptides for Improved Biocompatibility

Near‐infrared (NIR) organic fluorophores have emerged as promising for biomedical imaging and theragnostics, offering deep‐tissue penetration and reduced background interference. However, poor aqueous solubility and limitations in photostability, biocompatibility, and targeting h...

First report of Lasiodiplodia theobromae causing dieback of Common Fig ( Ficus carica ) in Morelos, Mexico

The common fig (Ficus carica L.) is widely cultivated in semi-arid and subtropical regions. In June 2025, five-year-old fig trees cv. Black Mission exhibiting dieback symptoms were observed in Morelos, Mexico (18°52'29.59"N, 98°47'01.65" W). Among 650 trees assessed, disease inci...

Immune-Related Transcript Abundance and Survival of Penaeus vannamei Treated with an Acid Hydrolysate from WSSV-Infected Shrimp

This study characterized acid hydrolysates prepared from WSSV-infected (HS-WSSV) and non-infected (HS-noWSSV) Penaeus (Litopenaeus) vannamei Boone, 1931 muscle and evaluated immune-related transcript abundance and survival following WSSV challenge. Hydrolysates were maintained at...

Development and Characterization of Bioactive Sodium Alginate Dressings Incorporating Melipona beecheii Honey for Wound Healing Applications

Healing wounds and skin lesions has been practiced since ancient times, and various mechanisms have been used to treat them, ranging from bandages and herbs to ointments and modern alternatives such as dressings. This work aimed to develop bioactive dressings for wound healing. D...

Reproductive traits, sex‐specific reproductive investment and gonadal dynamics in a spawning surgeonfish

Abstract The razor surgeonfish Prionurus laticlavius is a key herbivore in Eastern Pacific reef communities. This study provides a sex‐specific assessment of its reproductive traits, size at maturity and energetic dynamics in the Gulf of California by integrating biometric indica...

Stack-level engineering and predictive diagnostics of a modular plant–microbial fuel cell system using artificial neural networks

Plant-microbial fuel cells (PMFCs) are an emerging bioelectrochemical technology for sustainable energy generation that harnesses root exudates and soil microbial metabolism. Their operation shares electrochemical characteristics with hydrogen fuel cell stacks, particularly in te...

Block method: Reference-anchored peak fitting for tracking subtle chemical evolution in sequential XPS spectra

The Block Method is a refinement of spectral subtraction developed for the analysis of complex x-ray photoelectron spectroscopy data. In this method, the fitted spectrum of a reference sample is converted into a structured spectral block and used as an additional component during...

Present and Future Climatic Suitability of Castilleja tenuiflora in Mexico

Climate change can reshape the climatic conditions available to mountain plants. Using MaxEnt, we modelled the current and future climatic suitability of Castilleja tenuiflora Benth., a medicinal hemiparasitic plant, across Mexico and quantified its spatial overlap with Mexican P...

Determination of the metric of a Schwarzschild black hole surrounded by a halo of dark matter

Abstract Following the landmark acquisition of the first image of a black hole, systems comprising a black hole enveloped by a dark matter halo have attracted considerable attention. This work implements a novel method to analyze the structure of a system composed of a Schwarzsch...