PRODUCCIÓN CIENTÍFICA: Envíos recientes

Mostrando ítems 281-300 de 597

Diagnóstico molecular de COVID-19: Experiencia desde el laboratorio

Aguilar Mora, Fabián (2020)

El mundo, tal y como lo conocíamos hasta hace pocos meses, ha cam - biado y el impacto se ha dado prácticamente en todos los ámbitos sociales y profe - sionales. Muchas de las actividades que estábamos desarrollando ...
Structural, enzymatic and pharmacological profiles of AplTX-II - A basic sPLA2 (D49) isolated from the Agkistrodon piscivorus leucostoma snake venom

Resende, Letícia M.; de Almeida, José R.; Guaraca Medina, Tatiana Alejandra; F.Viegas, Matilde; Soaresc, Andreimar M.; Ramos, Maria J.; Fernandes, Pedro A.; Marangoni, Sergio; da Silva, Saulo L. (Scopus, 2021)

A basic sPLA2 (D49) from the venom of snake Agkistrodon piscivorus leucostoma (AplTX-II) was isolated, purified and characterized. We determined the enzymatic and pharmacological profiles of this toxin. AplTX-II was isolated ...
Bothrops atrox from Ecuadorian Amazon: Initial analyses of venoms from individuals

Palma Patiño, Ricardo Sebastián; Salazar Valenzuela, David; Medina Villamizar, Evencio; Mendes, Bruno; Proaño Bolaños, Carolina; da Silva, Saulo L.; de Almeida, José R. (Scopus, 2021)

Bothrops atrox is the most clinically relevant snake species within the Amazon region, which includes Ecuadorian territories. It comprises a large distribution, which could contribute to the genetic and venomic variation ...
Selective catalytic reduction of nitrogen oxide by ammonia over Cu/SAPO-11: a theoretical study

Griffe, Beulah; Brito, Joaquín Luis; Sierraalta, Aníbal (Scopus, 2020)

Quantum chemistry calculations were carried out using the ONIOM2 methodology at two diferent levels of calculation,B3LYP for the high level and UFF for the low level. These calculations were performed on Cu/SAPO-11, ...
Percepción sobre cambio climático en cuatro comunidades orientadas a la ganadería bovina en la zona central de los Andes Ecuatorianos

León Alvear, Viviana; Torres, Bolier; Luna, Marcelo; Torres, Alexandra; Ramírez, Patricia; Andrade Yucailla, Verónica; Muñoz Rengifo, Julio C; Heredia, Marco (Scopus, 2020)

El presente documento analizó la percepción de pequeños ganaderos de cuatro comunidades de la zona centro Andina del Ecuador, a cerca del conocimiento sobre el Cambio Climático (CC), y disponibilidad para aceptar ...
Microscopic and molecular evaluation of Strongyloides venezuelensis in an experimental life cycle using Wistar rats

Tobar, Jairo; Ramos Sarmiento, Daniel; Tayupanta, Diana; Rodríguez, Melina; Aguilar, Fabián (Scopus, 2020)

Strongyloides venezuelensis is a nematode whose natural host is rats. It is used as a model for the investigation of human strongyloidiasis caused by S. stercoralis. The latter is a Neglected Tropical Disease that affects ...
A new method for microplastic sampling and isolation in mountain glaciers: A case study of one antisana glacier, Ecuadorian Andes

Cabrera, Marcela; Bryan G., Valencia; Lucas Solis, Oscar Enrique; Calero, Jaqueline L.; Maisincho, Luis; Conicelli, Bruno; Massaine Moulatlet, Gabriel; Vellosa Capparelli, Mariana (Scopus, 2020)

Microplastic contamination has become ubiquitous in terrestrial and marine environments. Recent studies have shown that the wind can transport and deposit microplastics in high mountain ecosystems, but microplastic ...
Assessing the Quality of Amazon Aquatic Ecosystems with Multiple Lines of Evidence: The Case of the Northeast Andean Foothills of Ecuador

Galarza Naranjo, Emily Roxana; Cabrera, Marcela; Espinosa, Rodrigo; Espitia Sarmiento, Edgar F.; Massaine Moulatlet, Gabriel (Scopus, 2021)

We assessed the quality of Andes-Amazonia streams in Ecuador impacted by gold mining (GM), discharges from inefficient sewage network in urban areas (UA), wastes from fish farming (FF) and from non-functional landfill (LF) ...
Effect of the co‐digestion of agricultural lignocellulosic residues with manure from South American camelids

Meneses Quelal, Orlando; Velázquez‐Martí, Borja; Gaibor Chávez, Martí Juan; Niño Ruíz, Zulay (Scopus, 2021)

This study aims to evaluate the effects of the co‐digestion of agricultural residues with manure from camelids from the Andean zone. Different combinations of llama manure (LM) and vicuñas (VM) were made with amaranth (AS), ...
An egg-shell bifunctional CeO2-modified NiPd/Al2O3 catalyst for petrochemical processes involving selective hydrogenation and hydroisomerization

Mendez, Franklin J.; Alves, J. A.; Rojas Challa, Yahsé; Alí Corona, Oscar; Villasana, Yanet; Guerra, Julia; García Colli, Germán; Martínez, Osvaldo M.; Brito, Joaquin L (Scopus, 2020)

The catalytic performance during the 1-butyne hydrogenation using two reduced Al2O3-supported Pd-based catalysts was carried out in a total recirculation system with an external fixed-bed reactor. The lab-prepared egg-shell ...
On the way to systematize habituation: a protocol to minimize the effects of observer presence on wild groups of Leontocebus lagonotus

Vicente Alonso, Sara; Sanchez Sanchez, Lidia; Álvarez Solas, Sara (Scopus, 2021)

Habituation is used in most field research with primates to minimize observer effects on their behavior. Despite its importance, there is little published on the methods used to habituate different taxa of primates or how ...
Biogas from a full scale digester operated in psychrophilic conditions and fed only with fruit and vegetable waste

Martí Herrero, Jaime Emilio; Soria Castellón, G.; Diaz de-Basurt, A.; Alvarez, R.; Chemisana, D. (Scopus, 2019)

The aim of this work was to evaluate the feasibility of treating fruit and vegetable waste from a municipal market in a full-scale anaerobic digester with minimum implementation and operational costs, i.e. without ...
Techno-Economic Study of a Biogas-Based Polygeneration Plant for Small Dairy Farms in Central Bolivia

Villarroel Schneider, J.; Brijesh Mainali; Martí Herrero, Jaime Emilio (Springer, 2019)

This paper presents a techno-economic feasibility study of a polygeneration plant proposed for an association of dairy farmers in Bolivia. The systems have been designed in an integrated approach and are based on the ...
Survival on a semi-arid island: submersion and desiccation tolerances of fiddler crabs from the Galapagos Archipelago

Vellosa Capparelli, Mariana; Thurman, Carl L.; Gusso Choueri, Paloma; Moledo Abessa, Denis; Fontes, Mayana Karoline; Rodrigues Nobre, Caio; Campbell McNamarae, John (Web of Science, 2021)

During tidal cycles, semi-terrestrial fiddler crabs are subject to alternating periods of submersion and desiccation. Here, we compare physiological and biochemical adjustments to forced submersion and desiccation in two ...
Evaluation of municipal solid waste management system of Quito -Ecuador through life cycle assessment approach

Chicaiza Ortiz, Cristhian David; Navarrete Villa, Vanessa Pamela; Camacho López, Christian Orlando; Chicaiza Ortiz, Ángel Fabián (Latindex, 2020)

In Latin America and the Caribbean, the suitable processing of waste through the use oflandfills is around 55%, while the local governments with municipal solid waste (MSW) management plans are around ...
Caracterización Fitoquímica y elucidación estructural de metabolitos secundarios de Picramnia sp. En la Amazonía Ecuatoriana

Bermúdez Puga, Stalin A.; Romero Zambrano, Génesis; Peñuela Mora, María Cristina; Cevallos, Amanda Sofía; Romero Benavides, Juan Carlos; Guamán Otíz, Luis Miguel; Cisneros Pérez, Pablo A. (Latindex, 2020)

Las especies del género Picramniase encuentran a lo largo de América tropical,evidenciando una amplia distribución. Además, se han descrito los metabolitossecundarios que presentan algunas de ellas. En la provincia de Napo, ...
Thraulodes marreroi Chacón, Segnini y Domínguez (Ephemeroptera: Leptophlebiidae: Atalophlebiinae): nuevos registros para Venezuela y un análisis sobre su distribución neotropical mediante el modelo de nicho ecológico

Belkys Pérez-García; Liria, Jonathan; Leal Sánchez, Robert; Nieto Caicedo, Liliana; Guerrero Donoso, Edmundo (2020)

Se registran nuevas localidades para Thraulodes marreroi en Venezuela y se analiza su potencial distribución geográfica en el Neotrópico mediante el modelo de nicho ecológico, utilizando el algoritmo de Máxima Entropía ...
Rhizobium Diversity Is the Key to Efficient Interplay with Phaseolus vulgaris. Case of Study of Southern Ecuador

Torres Gutiérrez, Roldán; Granda Mora, Klever Iván; Bazantes Saltos, Kassandra del Rocío; Robles Carrión, Ángel Rolando (2021)

Plants acquire different combined forms of nitrogen by addition of ammonia and/or nitrate fertilizer or manure to the soil, during organic matter decomposition, by the conversion of nitrogen into different compounds, or ...
Host relatedness and landscape connectivity shape pathogen spread in the puma, a large secretive carnivore

Fountain Jones, Nicholas M.; Kraberger, Simona; Gagne, Roderick B.; Trumbo, Daryl R.; Salerno Dominguez, Patricia Elena; Funk, W. Chris; Crooks, Kevin; Biek, Roman; Alldredge, Mathew; Logan, Ken; Baele, Guy; Dellicour, Simon; Ernest, Holly B.; VandeWoude, Sue; Carver, Scott; Craft, Meggan E. (SCIMAGO JOURNAL RANK, 2021)

Urban expansion can fundamentally alter wildlife movement and geneflow, but how urba-nization alters pathogen spread is poorly understood. Here, we combine high resolution hostand viral genomic data with landscape variables ...
Use of an Integrated Geochemical and Ecotoxicological Approach to Evaluate Sediment Metal Contamination in Three Protected Estuarine Areas Along the Coast of São Paulo State, Brazil

Vellosa Capparelli, Mariana; Campbell McNamara, John; De Araujo, Giuliana; Feitosa Cruz, Ana Carolina (Springer, 2021)

We compared sediment quality in estuaries at three locations along the coast of São Paulo State, Brazil, using geochemical analyses and whole sediment toxicity tests, during the southern summer and winter of 2013. Each ...

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