Results 41 to 50 of about 5,066,057 (178)
Información sobre los programas de Post-grado de la Universidad Pedagógica Nacional
, 1978 Desde comienzos de la presente década la Universidad Pedagógica Nacional ha venido ofreciendo programas de especialización a nivel de Post-grado, conducentes al título de Magíster en Educación.
Grupo de Investigación, Grupo de Investigación +1 more
core +1 more source
International Journal of Applied Linguistics, EarlyView.ABSTRACT This cross‐sectional quantitative study focuses on the effect of practices in the educational context such as streaming on the relationships between foreign language learner emotions and proficiency. Participants were 413 Mexican English Foreign Language learners in a higher education institution in Mexico.
Jean‐Marc Dewaele +2 more
wiley +1 more source
Effect of temperature on morphology and wear of a Cu-Ti-TiC MMC sintered by abnormal glow discharge
Materials Research Express, 2020 Microstructure and tribological properties had been studied in a Cu-Ti-1%TiC MMC with titanium concentration of 10%, 15%, and 20%. The composite was manufactured following the pulvimetallurgical route that included: mechanical and ultrasonic mixing in 2 ...
Cristian D Bohórquez +3 more
doaj +1 more source
Heliyon, 2022 The effect of temperature and drying technologies on mucilage and cellulose (obtained by the microwave-assisted extraction technique, MAE) from Opuntia ficus-indica (OFI) and Austrocylindropuntia cylindrica (CC) was determined using a conventional oven ...
Oscar J. Medina +2 more
doaj +1 more source
Global Ecology and Biogeography, Volume 35, Issue 10, October 2026.ABSTRACT Aim The introduction of non‐native species to native ecological communities by humans is a major driver of global biodiversity change. Studying how species introductions influence interacting species is essential to understanding possible functional consequences of global change because biotic interactions are ecologically crucial.
Larissa Nowak +3 more
wiley +1 more source
GeoHealth, Volume 10, Issue 7, July 2026.Abstract The present study proposes a high‐resolution, multi‐component framework to estimate human exposure to air pollution in tropical urban environments, addressing complex topography and limited historical mobility and exposure data. This framework is applied to the city of Medellín in the Aburrá Valley in Colombia. To assess population exposure to
Valeria Solórzano‐Araque +8 more
wiley +1 more source
Heliyon, 2023 Mineral nutrition in arracacha is a critical production factor that conditions harvest yield. Few studies have been developed in nutrition and physiology, this does not allow to the design of ideal fertilization programs; consequences are increased ...
Jorge Enrique Villamil Carvajal +4 more
doaj +1 more source
Ecology and Evolution, Volume 16, Issue 6, June 2026.Coyote populations are expanding into urban areas, and this study examines how their diet adapts along a gradient from conserved to human‐modified habitats. Mammals dominated the diet at both sites, and there was no significant difference in annual dietary diversity between the conserved and modified areas.
Andrés Arias‐Alzate +4 more
wiley +1 more source
ChemCatChem, Volume 18, Issue 1, 15 January 2026.This review emphasizes the main methods for synthesizing dehydrozingerone (DHZ), highlighting the aldol condensation reaction of vanillin with acetone using homogeneous and heterogeneous catalysts. Furthermore, the main pharmacological properties that characterize DHZ are presented, along with current challenges and perspectives in its production ...
Paula Ramirez +4 more
wiley +1 more source
Integral process of obtaining glycerol as a by-product of biodiesel production from castor oil
Ingeniería Investigación y Desarrollo, 2012 The biodiesel is obtained from about 10 years ago in Europe, and now that it has taken hold as fuel for diesel engines, it is expected a clear increase in the production of this class of fuels in a the near future.
Leonel Romero +5 more
doaj