ARTÍCULOS CIENTÍFICOS: Envíos recientes

Mostrando ítems 141-160 de 550

Effect of Drying and Maturity on the Antioxidant Properties of the Blueberry (Vaccinium Floribundum Kurth) from the Ecuadorian Moorland and Sensory Evaluation of its Infusion

Ruilova, Ma. Bernarda; Niño Ruíz, Zulay; Arias Toro, Daniel; Sandoval Ruilova, Patrício (Scopus, 2022)

The mortiño (Vaccinium oribundum) is characterized by its high content of polyphenols and anthocyanins, as well as high antioxidant activity. This research analyzed the effect of drying (convection drying and lyophilization) ...
Prediction of acute toxicity of pesticides for Americamysis bahia using linear and nonlinear QSTR modelling approaches

Diéguez Santana, Karel; Nachimba Mayanchi, Manuel Mesias; Puris, Amilkar; Torres Gutiérrez, Roldan; González Díaz, Humberto (Scopus, 2022)

Globally, pesticides are toxic substances with wide applications. However, the widespread use of pesticides has received increasing attention from regulatory agencies due to their various acute and chronic effects on ...
Is forest location more important than forest fragmentation for flood regulation?

Hurtado Pidal, Jorge; Acero Triana, Juan S.; Aguayo, Mauricio; Link, Oscar; Valencia, Bryan G.; Espitia Sarmiento, Edgar; Conicelli, Bruno (Scopus, 2022)

Native forest deforestation has been identified as one of the main land cover changes affecting flood risk specially during small and moderate storm events. In this regard, forest protection and reforestation are considered ...
Repeated genetic adaptation to altitude in two tropical butterflies

Montejo Kovacevich, Gabriela; Meier, Joana I.; Bacquet Pérez, Caroline Nicole; Warren, Ian A.; Frank Chan, Yingguang; Kucka, Marek; Salazar, Camilo; Rueda M, Nicol; Montgomery, Stephen H.; McMillan W., Owen; Kozak, Krzysztof M.; Nicola J., Nadeau; Martin, Simon H.; Jiggins, Chris D. (Scopus, 2022)

Repeated evolution can provide insight into the mechanisms that facilitate adaptation to novel or changing environments. Here we study adaptation to altitude in two tropical butterflies, Heliconius erato and H. melpomene, ...
Analysis of energy future pathways for Ecuador facing the prospects of oil availability using a system dynamics model. Is degrowth inevitable?

Espinoza, Vicente Sebastián; Fontalvo, Javier; Martí Herrero, Jaime Emilio; Mediavilla, Margarita; Miguel, Luis Javier (Scopus, 2022)

The aim of this paper is to develop a system dynamics model to assess the energy future up to 2050 for Ecuador considering its condition of oil producing country. Three scenarios have been developed with different assumptions ...
A vectorial approach to generalize the remainder theorem

Hidalgo Rosas, Marcos A.; Laudano, Francesco (Scopus, 2022)

We propose a new computational proof for the division algorithm that, usingvector algebra, generalizes the remainder theorem to divisions for polynomials of any degreeover a generic integral domain. Then, we extend this ...
From laboratory to farm-scale psychrophilic anaerobic co-digestion of cheese whey and cattle manure

Jaimes Estévez, Jaime; Vera Mercado, Erik; Jaramillo, Juan G.; Rodríguez, Paula; Martí Herrero, Jaime Emilio; Escalante, Humberto; Castro, Liliana (2022)

This paper aims to prove the feasibility of cheese whey (CW) and cattle manure (CM) anaerobic co-digestion, from biomethane potential (BMP) laboratory assays to monitoring a farm-scale digester under psychrophilic conditions, ...
Floristic and functional diversity of ferns and lycophytes at three elevational zones in the eastern slopes of the northern Andes, Ecuador

Rioaño, Carolina; Massaine Moulatlet, Gabriel (2022)

e northeastern slope of the Andes is an area of high diversity of ferns and lycophytes. In this study we assessed the diversity patterns of ferns and lycophytes in ten 250 m x 2 m plots installed at three elevational ...
Aboveground Biomass Along an Elevation Gradient in an Evergreen Andean–Amazonian Forest in Ecuador

Maza, Byron; Rodes Blanco, Marina; Rojas, Edison (2022)

The aim of this research was to assess how aboveground biomass (AGB) changes along an altitudinal gradient in evergreen Andean–Amazonian forests [Evergreen Lower Montane Forest, northeastern Cordillera of the Andes; ...
Hydraulic relationship between aquifer and pond under potential influence of eucalyptus and sugarcane in tropical region of São Paulo, Brazil

Terada, Rafael; Hirata, Ricardo; Galvão, Paulo; Saraiva, Fernando; Tasse, Norio; Luiz, Mariana; Conicelli, Bruno (2022)

A hydraulic interaction between a pond and shallow aquifer in a watershed surrounded by cultivations of sugarcane and eucalyptus trees was evaluated in a tropical zone in Brazil. The pond, located in lower topographic ...
700,000 years of tropical Andean glaciation

Rodbell, D. T.; Hatfield, R. G.; Abbott, M. B.; Woods, A; Chen, C. Y.; Stoner6, J. S.; Weidhaas, N. C.; Hillman, A.L.; Larsen D.J.; Delgado, G.; Katz, S.A.; Solada, K.E.; Valencia, Bryan G. (Scopus, 2022)

Our understanding of the climatic teleconnections that drove ice-age cycles has been limited by a paucity of well-dated tropical records of glaciation that span several glacial–interglacial intervals. Glacial deposits ...
Level of acceptance of epistemically unwarranted beliefs in pre-service primary school teachers: influence of cognitive style, academic level and gender

Cadena Nogales, Pedro D.; Solaz Portolés, Joan Josep; Echegoyen Sanz, Yolanda; Sanjosé López, Vicente (Scopus, 2022)

One of the main objectives of scientific literacy is the development of rational skills and critical thinking in citizens. This is a central goal for teachers. However, beliefs that lack rational foundation and supporting ...
Dealumination and Characterization of Natural Mordenite-Rich Tuffs

Adriano, Armando; Cornejo, Mauricio; Baykara, Haci; Ludeña, Eduardo V.; Brito, Joaquín L. (Scopus, 2022)

: The present study evaluates the feasibility of partially dealuminated natural mordenite as a catalyst support by studying improvement in its textural properties. This is the first study that reports the dealumination ...
Reciclaje y reaprovechamiento de los residuos de concreto en pavimentos

Ochoa Averos, Sara del Rocio; Bizarreta-Ortega, Julio C.; Chicaiza Ortiz, Ángel Fabián (2022)

El modelo de producción actual es responsable por el consumo del 75 % de los recursos naturales ocasionando graves problemas urbanos. El resultado de esta cadena productiva es el aumento desenfrenado ...
Resilencia urbana, ciudades Amazónicas y comercio callejero. Caso de estudio: Tena - Ecuador

Chérrez Rodas, Karina Alexandra; Chérrez Rodas, Karina Alexandra; Chicaiza Ortiz, Ángel Fabián (2022)

El comercio informal en las aceras, parterres y calles forma parte de un debate activo entre quienes luchan a favor y en defensa del apropiado uso del espacio público y quienes desempeñan actividades que se con sideran ...
Environmental Management Strategies in Kichwa Communities of the Ecuadorian Amazon

Chicaiza Ortiz, Cristhian David; Logroño, Washington; Chicaiza Ortiz, Ángel Fabián; Núñez Chávez, William; Ortiz Cañar, Marcia (2022)

Unemployment in Ecuador's Amazonian communities has increased significantly during the pandemic caused by the COVID-19 disease, primarily from March to August 2020; as a result, the population has shifted its focus to ...
Evaluación de la biodiversidad, amenazas y estatus de conservación de la flora y fauna del Bosque Petrificado Puyango

Jumbo, Erika; Avila, Andrés; Herrera Feijoo, Robinson J.; Chicaiza Ortiz, Ángel Fabián; Morocho Cuenca, María; Chicaiza Ortiz, Cristhian David (2021)

: El Bosque Petrificado (B. P.) Puyango alberga una diversa riqueza de flora y fauna que ha recibido poca o nula atención gubernamental, a pesar de ello posee un enorme potencial para la conservación de recursos naturales ...
Machine Learning Study of Metabolic Networks vs ChEMBL Data of Antibacterial Compounds

Diéguez Santana, Karel; Casañola Martin, Gerardo M; Torres Gutiérrez, Roldán; Rasulev, Bakhtiyor; R Green, James; González-Díaz, Humbert (2022)

Antibacterial drugs (AD) change the metabolic status of bacteria, contributing to bacterial death. However, antibiotic resistance and the emergence of multidrug-resistant bacteria increase interest in understanding metabolic ...
Automatic Control System for Cane Honey Factories in Developing Country Conditions

Cerda Mejía, Víctor; Cerda Mejía, Galo; Guijarro Rubio, Octavio; Benítez Cortes, Isnel; Guardado Yordi, Estela; Ortega Tenezaca, Bernabe; Miño Valdés, Juan; González Suárez, Erenio; Pérez Martínez, Amaury (2022)

) Background: A proposal for the automatic control of sugar cane honey factories based on simulation with real data is presented. (2) Methods: The P&ID diagram of the artisanal process is designed, as well as the measurement ...
Can the bioturbation activity of the fiddler crab Minuca rapax modify the distribution of microplastics in sediments?

Vellosa Capparelli, Mariana; Martínez Colón, Michael; Lucas Solis, Oscar Enrique; Valencia Castañeda, Gladys; Celis-Hernández, Omar; Ávila, Enrique; Massaine Moulatlet, Gabriel (2022)

Fiddler crabs are known as "eco-engineers" who maintain habitat health through sediment bioturbation. They regularly interact with microplastics (MPs) due to their contact with the sediment. In this study we compared MPs ...

Mostrando ítems 141-160 de 550

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