Results 31 to 40 of about 381 (127)

Biosynthesis and Characterization of Melanin Extracted From Solanum tuberosum and Mucuna deeringiana

Journal of Chemistry, Volume 2026, Issue 1, 2026.
A growing interest in finding accessible and low‐cost sources of melanin has emerged due to its wide range of applications. This work demonstrated the use of Mucuna deeringiana as a source of L‐DOPA, and Solanum tuberosum of tyrosinase in eumelanin biosynthesis.
Andrés Alvarez, Luís Miguel Borrás, Sandra Chaparro, Hugo Rojas, Maria H. Brijaldo, José J. Martínez, Munmun Bardhan   +6 more
wiley   +1 more source

Insuficiencias en la preparación estadística del estudiante de medicina

Medisur, 2017
Fundamento: la preparación estadística del futuro profesional de medicina resulta esencial para su desempeño profesional. Objetivo: identificar insuficiencias en relación con la preparación estadística del estudiante de medicina en el ciclo clínico de la
Vicente Eloy Fardales Macías, Juan Rafael Fábregas Tejeda, Rigoberto Arley Carrazana Rodríguez   +2 more
doaj   +2 more sources

Mδ+ Species as a Descriptor of Catalytic Activity and Selectivity in Levulinic Acid Hydrogenation Over Au, Rh, and Ir/TiO2

Journal of Chemistry, Volume 2026, Issue 1, 2026.
γ‐Valerolactone (GVL) is a derivative of lignocellulosic biomass, which has been identified as a key sustainable platform molecule for the production of renewable fuels and fine chemicals. The presence of Mδ+ species resulting from the metal–support interactions can serve as a descriptor of the activity and selectivity in this hydrogenation reaction ...
José J. Martínez, Claudia Castañeda, Deisy González, Leonardo Silva, Daniel G. Araiza, Antonio Gómez-Cortés, Hugo Rojas, Gabriela Díaz, Sohini Basu Roy   +8 more
wiley   +1 more source

The demographic landscape of Spanish language teaching research: A cross‐national study

The Modern Language Journal, Volume 109, Issue 4, Page 887-914, Winter 2025.
Abstract Engagement with research has long been recognized as a key driver of improved language teaching practices and teachers’ professional growth. Yet, language teaching practitioners often remain distanced from research activities, thus perpetuating a well‐documented gap between research and practice.
Javier Muñoz‐Basols, Elisa Gironzetti, Sal Consoli   +2 more
wiley   +1 more source

Determinantes y mecanismos mediadores del uso académico de tecnologías digitales del profesorado en formación STEM en Chile: Un análisis de invarianza estructural por género

Edutec
Esta investigación analizó determinantes y mecanismos mediadores del uso académico de tecnologías digitales en profesorado chileno en formación de áreas STEM (Ciencias y Matemática), evaluando la invarianza estructural del modelo y brechas por sexo.
Miriam León, Cristian Cerda, Patricia Huentemil, Camila Salazar-Fernández   +3 more
doaj   +1 more source

To Drink or Not to Drink? Collective Alcohol Consumption Among Young University Students: Mapping a Path Towards Moderation. A Qualitative Study

Nursing Open, Volume 12, Issue 11, November 2025.
ABSTRACT Aim The aim of this study was to develop a theory based on the understanding of collective alcohol use as a cultural phenomenon by exploring the perceptions and meanings attributed to this behaviour by health science university students. Design This research is a grounded theory study.
Luz Stella Algarra‐López, Sandra Milena Hernández‐Zambrano, Mayra Solanye Galindo‐Huertas, Rafael Fernández‐Castillo   +3 more
wiley   +1 more source

Microwave‐Assisted One‐Pot Synthesis of Alkyl Levulinates From Post‐Harvest Vegetable Waste

Advanced Sustainable Systems, Volume 9, Issue 9, September 2025.
Vegetable waste is valorized through Soxhlet extraction using H₂O₂ and heteropolyacid (HPA), followed by material characterization (XRD, FTIR, TGA, DSC). A microwave‐assisted reaction at 170 °C for 30 min with HPA and alcohol yields bio‐based esters.
Ángel G. Sathicq, Luis A. Gallego‐Villada, Edwin Alarcón, Andrés Felipe Monroy, José J. Martínez, Gustavo P. Romanelli   +5 more
wiley   +1 more source

La universidad y la emancipación histórica del sujeto racional en la ética de la postmodernidad The university and the historical emancipation of the rational subject within a postmodern ethics

Investigación y Postgrado, 2006
En el marco del surgimiento de la Teoría Crítica de la postmodernidad, como corriente de pensamiento relacionada con los problemas educativos, el propósito del presente trabajo documental y de carácter descriptivo consiste, precisamente, en reflexionar ...
Ramón Calzadilla
doaj  

Bienestar socioemocional y uso tecnológico en enseñanza remota de docentes de secundarias de Sonora

CPU-e
El objetivo del estudio es determinar las relaciones entre el bienestar socioemocional y el uso de la tecnología con la práctica pedagógica de docentes de escuelas públicas de secundaria en el Noroeste de México. Participaron 788 docentes, de los cuales
José Luis Montoya Aguilar, José Ángel Vera Noriega, Jesús Tánori Quintana   +2 more
doaj   +1 more source

Escribir en comunidad: Construcción de relaciones y responsabilidad en la producción de conocimiento

American Anthropologist, Volume 127, Issue 3, Page 447-465, September 2025.
ABSTRACT As anthropology reckons with its past, present, and future, anthropologists increasingly seek to challenge inequities within the discipline and academia more broadly. Anthropology, regardless of subdiscipline, is a social endeavor. Yet research often remains an isolating (though not necessarily solitary) process, even within research teams and
Jordi Armani Rivera Prince, Emily M. Blackwood, Madeleine Landrum, Emily B. P. Milton, Elizabeth L. Rodgers, Monica Barnes, Elizabeth Chin, Christa Craven, Kristina Douglass, María José Figuerero Torres, María A. Gutiérrez, Sarah Herr, Lisa Hodgetts, Kirk A. Maasch, Kylie E. Quave, Danilyn Rutherford, Daniel H. Sandweiss   +16 more
wiley   +1 more source