Results 41 to 50 of about 1,195,157 (347)

Effective acetalization of furfural catalyzed by Fe‐ and Co‐oxalates: impact of alcohols structure on products composition

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Fe‐, Co‐, and FeCo‐oxalates supported on silica gel (5 wt% metal load) were synthesized, characterized, and tested for the first time in solvent‐free furfural (FF) acetalization with C1–C8 alcohols at 70–170 °C under both conventional and microwave (MW)‐assisted conditions. The interaction of FF with linear C1–C4 alcohols yielded pincer‐shaped
Alexander Pokutsa, Katarzyna Rydel‐Ciszek, Alina M. Balu, Rafael Luque   +3 more
wiley   +1 more source

Experiencias y desafíos de la Comisión nacional asesora de eventos supuestamente atribuibles a la vacunación o inmunización graves de Ecuador, 2020-2023

Revista Panamericana de Salud Pública
Objetivo. Describir las experiencias de la Comisión Nacional Asesora de Eventos Supuestamente Atribuibles a la Vacunación o Inmunización (ESAVI) graves implementada en Ecuador en el período 2020-2023. Método.
Daniel Simancas-Racines, Juan Marcos Parise-Vasco, Sebastián Baldeón-Espinosa, Rosa R. Aguinaga, Gabriela Vinueza-Valencia, Cristina Jacome, Jeannete Zurita, Cristina Bejar, Luis Bayas, Francisco Pérez-Tasigchana, Yndira Anchayhua, Carlos Andrés Pinto-Díaz, Helvert Felipe Molina-León, Gonzalo Baquero-Paret   +13 more
doaj   +1 more source

Evaluación del contenido de cadmio en suelos destinados al cultivo de cacao en la provincia de Guayas (Ecuador)

Ecuador es Calidad, 2019
El cadmio es un metal pesado que provoca serios daños a la salud humana. Su presencia natural o antro­pogénica en agua y suelo es motivo de preocupación debido, en gran medida, a la posibilidad de acumularse en alimentos, entre ellos el cacao, uno de los
Rusbel Jaramillo, Klever Medina, Alejandra Recalde, Katty Pastás, Daniel Bedoya, Verónica Ramírez   +5 more
doaj   +1 more source

Energy and carbon footprints of biofuel systems using banana and plantain waste [PDF]

, 2010
Waste that accumulates in Musa production systems (up to 40% of total fruit biomass) has a great potential to be processed into bioethanol due to high sugar contents of fruits, and can open new energy sources and markets for small-scale banana and ...
Dufour, Dominique, Giraldo, Andrés, Gonzalez, Alonso, Graefe, Sophie, Munoz, Luis Armando, Solis, Hortensia   +5 more
core  

Afro‐Amerindian cosmopolitics in environmental education: A decolonial analysis of academic discourses involving the epistemological disputes around the term sustainability

British Educational Research Journal, EarlyView.
Abstract Considering the growing calls for decolonial approaches within the scope of Climate Change and Sustainability Education (CCSE), in this research we seek to understand the meanings which have been put into circulation through research narratives on Environmental Education (EE) concluded in Latin America, regarding Afro‐Amerindian knowledges ...
Danilo Seithi Kato, Luiz Marcelo de Carvalho   +1 more
wiley   +1 more source

INTERACCIONES MULTISENSORIALES EN EL DISEÑO

Daya, 2017
Es común asociar al diseño con el sentido visual. Sin embargo, el sentido visual no es el úni-co órgano perceptivo que puede entrar en juego, existen otros sentidos que el diseño gráfico no ha tomado en cuenta.
Eréndida Cristina Mancilla González, Manuel Guerrero Salinas   +1 more
doaj   +1 more source

The Case of the Missing Green Iguana Predators: Reviews of Ecological Literature Should Go Beyond Google Scholar

The Bulletin of the Ecological Society of America, EarlyView.
Abstract Knowing about species interactions is essential for ecological research, conservation efforts, resource management, and maintaining healthy ecosystems, but many of these, such as reports of predation, may not always be published in easily located resources—if they are published at all.
Matthijs P. van den Burg, Hinrich Kaiser
wiley   +1 more source

Actividades del segundo semestre de 2018

Estudios de la Gestión, 2019
El Observatorio de la Pequeña y Mediana Empresa –PyME– es una iniciativa del Área de Gestión de la Universidad Andina Simón Bolívar, Sede Ecuador (UASB-E), creada el 9 de septiembre de 2010 bajo la misión de contribuir de manera científica, proactiva ...
Universidad Andina Simón Bolívar, sede Ecuador
doaj  

Pre-professional journalistic cultures of Cuba, Ecuador and Venezuela: Perceptions of students about ethics and journalism practices

Communication & Society (Formerly Comunicación y Sociedad), 2019
This paper analyses the pre-professional journalistic culture of Ecuador, Cuba and Venezuela based on the degree of permissiveness held by Journalism students in regard to controversial ethical practices and their views of the media and the journalistic ...
Martín Oller-Alonso, Carlos Arcila-Calderón, Dasniel Oliveira-Pérez   +2 more
doaj   +1 more source

Person to Person in Ecuador [PDF]

, 2012
While still in the midst of their study abroad experiences, students at Linfield College write reflective essays. Their essays address issues of cultural similarity and difference, compare lifestyles, mores, norms, and habits between their host countries
Greider, Hannah
core   +1 more source