Explanipedia

Recent advances in high-entropy alloys for electrocatalysis: From rational design to functional performance Open

Víctor M. Jiménez-Arévalo, P. Mártín, María Fernanda Sepúlveda, Manuel Azócar, Xiaorong Zhou , et al. · 2025

High-entropy alloys (HEAs) represent a transformative class of materials for electrocatalysis, challenging conventional alloy design by incorporating five or more principal elements into single- or multiphase solid solutions. This composit…

Recent Advances in High-Entropy Alloys for Electrocatalysis: From Rational Design to Functional Performance Open

Víctor M. Jiménez-Arévalo, P. Mártín, María Fernanda Sepúlveda, Manuel Azócar, Xiaorong Zhou , et al. · 2025

Microbiologically influenced corrosion of Al–Cu–Li alloy by Pseudomonas aeruginosa Open

C.G. Ramirez, Alberto Monsalve, Cecilia Montero, Javier Espinoza-Vergara, John C. Araujo , et al. · 2025

Colorimetric Detection of Bovine Serum Albumin (BSA Protein) by Interaction and Modification of Silver Nanoparticles Open

M. Acuña, Mariana Walter, Maritza Páez, Manuel Azócar · 2025

The detection of serum albumin is of great relevance because its presence in urine above normal levels is implicated in different pathologies, such as Diabetes Mellitus and Preeclampsia. The main objective of this work was to develop a pro…

Integrating Experimental and Computational Insights into D-Amino Acid Inhibition of Aluminum Alloy 7075-T6 Corrosion in Saline Media Open

Nelson Vejar, Fabiola Pineda, Yoan Hidalgo‐Rosa, Eduardo Schott, Romina L. Abarca , et al. · 2025

Energy Transfer by Mechanical Alloying and Electrocatalytic Performance of the As‐Sintered Self‐Supported High‐Entropy Alloy FeNiCoCuMo Open

Víctor M. Jiménez-Arévalo, P. Mártín, Edgar Pío, Jorgé Pavez, Claudio Aguilar , et al. · 2024

Efficient, stable, and cost‐effective electrocatalysts for the oxygen evolution reaction (OER) are essential for clean energy generation through water splitting. This study presents a FeNiCoCuMo high‐entropy alloy (HEA) synthesized via mec…

Green Corrosion Inhibitors for Metal and Alloys Protection in Contact with Aqueous Saline Open

Felipe M. Galleguillos Madrid, Álvaro Soliz, Luis Cáceres, Markus Bergendahl, Susana Leiva-Guajardo , et al. · 2024

Corrosion is an inevitable and persistent issue that affects various metallic infrastructures, leading to significant economic losses and safety concerns, particularly in areas near or in contact with saline solutions such as seawater. Gre…

Covalent electrografting of aryl groups on AA2060-T8 surfaces, and their modification with Ce(4OHcin)3 to incorporate additional anticorrosive activity Open

Javier Espinoza-Vergara, Shedrack Musa Gad, Carlos P. Silva, Maritza Páez, Zelong Jin , et al. · 2024

The aluminum alloys used in aerospace applications are susceptible to corrosion. This has led to the development of methodologies that ensure the durability of the parts and pieces of aircraft. These anticorrosive processes involve the use…

Endogenous origin of Pseudomonas aeruginosa infecting hospitalized patients in Ecuador Open

Gabriela Vasco, Mishell Achig, Belén Prado-Vivar, Maritza Páez, Franklin Espinosa , et al. · 2023

Recent evidence suggests that Pseudomonas aeruginosa, a bacterium that has the ability to cause deadly infections in hospitalized patients, could originate in the patient's own flora. We employed the Oxford Nanopore platform to obta…

Alumoxane film for corrosion protection of 2024 aluminum alloy Open

Nelson Vejar, Javier Rojas, Claudia Alvarado, Roberto Solís, Fabiola Pineda , et al. · 2023

Alumoxane film on anodized 2024 was obtained using stearic acid to prevent corrosion in a chloride medium. A cleaning pretreatment was applied to the metal surface to improve the adhesion and formation of the alumoxane film using three dif…

Distribution of Escherichia coli Pathotypes along an Urban–Rural Gradient in Ecuador Open

Lorena Montero, Shanon Smith, Kelsey J. Jesser, Maritza Páez, Estefanía Ortega , et al. · 2023

Diarrheal diseases are a leading cause of mortality and morbidity in low- and middle-income countries. Diarrhea is associated with a wide array of etiological agents including bacterial, viral, and parasitic enteropathogens. Previous studi…

Effect of Plasma Argon Pretreatment on the Surface Properties of AZ31 Magnesium Alloy Open

Cecilia Montero, C.G. Ramirez, Lisa Muñoz, Mamié Sancy, Manuel Azócar , et al. · 2023

Climate change has evidenced the need to reduce carbon dioxide emissions into the atmosphere, and so for transport applications, lighter weight alloys have been studied, such as magnesium alloys. However, they are susceptible to corrosion;…

Ostwald Ripening and Antibacterial Activity of Silver Nanoparticles Capped by Anti-Inflammatory Ligands Open

Romina Alarcón, Mariana Walter, Maritza Páez, Manuel Azócar · 2023

Silver nanoparticles (AgNPs) have been extensively studied during recent decades as antimicrobial agents. However, their stability and antibacterial activity over time have yet to be sufficiently studied. In this work, AgNPs were coated wi…

Endogenous Origin of <i>Pseudomonas aeruginosa</i> Infecting Hospitalized Patients in Ecuador Open

Gabriela Vasco, Mishell Achig, Belén Prado-Vivar, Maritza Páez, Evelyn Patrícia Sánchez Espinoza , et al. · 2023

Spectrophotometric Determination of Bovine Serum Albumin (Bsa Protein) by Interaction with Silver Nanoparticles Open

Manuel Azócar, M. Acuña, Mariana Walter, Maritza Páez · 2023

Mortality and associated risk factors in patients with COVID-19 A hospital-based study in Ecuador Open

Edy Quizhpe, Eduardo Montalvo, Maritza Páez, Tatiana Guevara, Danny Flores , et al. · 2022

Background: Since the coronavirus disease 2019 (COVID-19) pandemic, increased mortality has been reported in Ecuador, with an additional 59,000 deaths during 2019–2020, approximately doubling the mortality from other causes. Although Latin…

A Tribological and Ion Released Research of Ti-Materials for Medical Devices Open

Daniela Silva, Camila Arcos, Cecilia Montero, Carolina Guerra, Carola Martínez , et al. · 2021

The increase in longevity worldwide has intensified the use of different types of prostheses for the human body, such as those used in dental work as well as in hip and knee replacements. Currently, Ti-6Al-4V is widely used as a joint impl…

Effect of pH on the Electrochemical Behavior of Hydrogen Peroxide in the Presence of Pseudomonas aeruginosa Open

Javier Espinoza-Vergara, Paulo Molina, Mariana Walter, Miguel Gulppi, Nelson Vejar , et al. · 2021

The influence of pH on the electrochemical behavior of hydrogen peroxide in the presence of Pseudomonas aeruginosa was investigated using electrochemical techniques. Cyclic and square wave voltammetry were used to monitor the enzymatic act…

Comparison of the protective efficiency of polymethacrylates with different side chain length for AA2024 alloy Open

Lisa Muñoz, Mamié Sancy, Carolina Guerra, Marcos Flores, Paulo Molina , et al. · 2021

Gut Microbiome Changes with Acute Diarrheal Disease in Urban Versus Rural Settings in Northern Ecuador Open

Maria J. Soto-Girón, Ángela Peña, Janet K. Hatt, Lorena Montero, Maritza Páez , et al. · 2021

Previous studies have reported lower fecal bacterial diversity in urban populations compared with those living in rural settings. However, most of these studies compare geographically distant populations from different countries and even c…

Mortality and Risk Factors in Patients With COVID-19 in Ecuador: A Cross-Sectional Analytic Study Open

Edy Quizhpe, Eduardo Montalvo, Maritza Páez, Tatiana Guevara, Danny Flores , et al. · 2021

Background : In Ecuador, a high mortality was observed during the maximum peak of COVID-19 cases in spring/summer 2020. Thus, 10000 thousand more deaths were registered in 2020 compared to 2019 in the same period time. A few researchers in…

Predictive electrochemistry: will it be possible? Open

Maritza Páez · 2020

Preface for special issue on the occasion of José H. Zagal 70th birthday Open

Maritza Páez · 2020

Metagenomic Signatures of Gut Infections Caused by Different <i>Escherichia coli</i> Pathotypes Open

Ángela Peña, Maria J. Soto-Girón, Shanon Smith, Jeticia R. Sistrunk, Lorena Montero , et al. · 2019

E. coli infectious diarrhea is an important contributor to child mortality worldwide. However, diagnosing and thus treating E. coli infections remain challenging due to technical and other reasons associated with the limitations of the tra…

Isolation and characterization of violacein from an Antarctic Iodobacter: a non-pathogenic psychrotolerant microorganism Open

Joaquín Atalah, Lotsé Blamey, Sebastián A. Muñoz-Ibacache, Felipe Castro Gutiérrez, Marcela Urzúa , et al. · 2019

Surfaces based on amino acid functionalized polyelectrolyte films towards active surfaces for enzyme immobilization Open

Ximena Briones, Valeria Villalobos, Yves Queneau, Caroline Silva Danna, Rodrigo Muñoz , et al. · 2019

Sol-Gel Films: Corrosion Protection Coating for Aluminium Alloy Open

E. González, Nelson Vejar, Roberto Solís, Lisa Muñoz, Maria Victoria Encinas , et al. · 2019

Aluminum alloys used in aeronautical industry are susceptible to corrosion. The solution to this problem is base chromate materials, which have been heavily regulated and restricted. The development of alternatives begins in the 1970s and …

Sol–gel coatings doped with encapsulated silver nanoparticles: inhibition of biocorrosion on 2024-T3 aluminum alloy promoted by Pseudomonas aeruginosa Open

E. González, N. Leiva, Nelson Vejar, Mamié Sancy, Miguel Gulppi , et al. · 2019

Silanol type hybrid polymers modified with silver nanoparticles encapsulated with SiO2 for biocorrosion protection of 2024-T3 aluminum alloy were studied through electrochemical characterization and surface analysis techniques. Two differe…

Effect of a Bacterial Consortium on Passivation Property of 2024 Aluminum Alloy Open

Daniel Ortega, Claudia Alvarado, Lisa Muñoz, Hans‐Peter Kohler, Fabiola Pineda , et al. · 2019

Improving the interaction between aluminum surfaces and polymer coatings Open

Lisa Muñoz, Fabiola Pineda, Carola Martínez, Mamié Sancy, Marcela Urzúa , et al. · 2018

Maritza Páez YOU? Author Swipe