Results 141 to 150 of about 208,051 (314)

Gamificación como estrategia para incluir la educación ambiental en el contexto universitario: caso REHI

Revista Científica
Este artículo describe una experiencia de innovación educativa en el aula mediante el diseño de un juego de mesa como alternativa didáctica para introducir la educación ambiental en el contexto universitario.
Claritza Marlés Betancourt, Parcival Peña Torres, Yelly Yamparli Pardo Rozo   +2 more
doaj   +1 more source

Evidence of a decadal solar signal in the Amazon River: 1903 to 2013 [PDF]

, 2015
It has been shown that tropical climates can be notably influenced by the decadal solar cycle; however, the relationship between this solar forcing and the tropical Amazon River has been overlooked in previous research.
Antico, Andres, Torres, Maria Eugenia
core   +2 more sources

The effect of environmental factors on transepithelial potential in a model Amazonian teleost, the tambaqui (Colossoma macropomum): Implications for sodium balance in harsh environments

Journal of Fish Biology, EarlyView.
Abstract The tambaqui (Colossoma macropomum, G. Cuvier 1818) thrives both in the ion‐poor waters of the Amazon and in commercial aquaculture. In both, environmental conditions can be harsh due to low ion levels, occasional high salt challenges (in aquaculture), low pH, extreme PO2 levels (hypoxia and hyperoxia), high PCO2 levels (hypercapnia), high ...
Chris M. Wood, Anne Crémazy, Carolyn Morris, Ora E. Johannsson, Gudrun De Boeck, Adalberto Luis Val   +5 more
wiley   +1 more source

Oxygen consumption from air and water, ammonia and urea‐N excretion, and Na+ fluxes during progressive aquatic hypoxia in Amazonian armoured catfish Pterygoplichthys gibbiceps and Pterygoplichthys pardalis

Journal of Fish Biology, EarlyView.
Abstract The Amazonian loricariid fish Pterygoplichthys gibbiceps, from the Rio Negro, and Pterygoplichthys pardalis, from the Rio Solimões, are facultative air‐breathers that can use the stomach as an air‐breathing organ. Measurement of oxygen uptake under progressive aquatic hypoxia revealed a relatively high hypoxia resistance of both species.
Bernd Pelster, Chris M. Wood, Adalberto Luis Val   +2 more
wiley   +1 more source

Análisis del impacto del turismo de naturaleza en la Amazonia: conservación y bienestar comunitario

Universidad y Empresa
Objetivo: Este artículo analizó el impacto de 26 emprendimientos de turismo de naturaleza en el departamento de Caquetá, Amazonia colombiana, con el propósito de evaluar su contribución a la conservación ambiental y al bienestar comunitario. Metodología:
Esther Julia Olaya Marín, César Omar Jaramillo-Morales, Cristian David Plaza Pérez   +2 more
doaj   +1 more source

Nitrogen excretion and oxygen consumption under severe hypoxia in siluriform fishes from the Amazon

Journal of Fish Biology, EarlyView.
Abstract Siluriform fishes collected from the Rio Negro and Rio Solimões proved to be highly resistant to aquatic hypoxia. In all four species analysed in this study, aquatic oxygen consumption significantly decreased from normoxic levels at water PO2 values near 1 kPa. Air‐breathing activity was observed only in Sturisoma sp. (Rio Negro).
Bernd Pelster, Chris M. Wood, Adalberto Luis Val   +2 more
wiley   +1 more source

Branchial localization of acid (A‐type) and base (B‐type) excreting ionocytes in Amazonian stenohaline freshwater Potamotrygon ray

Journal of Fish Biology, EarlyView.
Abstract The branchial epithelium of Potamotrygon—a member of the only strictly freshwater elasmobranch family Potamotrygonidae—was observed via immunohistochemistry, and two distinct forms of ionocytes were identified. The acid (A‐type) and base (B‐type) secreting cells with respective basolateral–apical localizations of Na+/K+‐ATPase–Na+/H+ exchanger
M. W. Rossi, C. M. Wood, A. L. Val, J. M. Wilson   +3 more
wiley   +1 more source

Assessing the population structure of Plagioscion squamosissimus (Teleostei, Perciformes, Sciaenidae) from the São Francisco River, Bahia, Brazil, using body morphology and otolith shape signatures

Journal of Fish Biology, EarlyView.
Abstract The south American silver croaker, Plagioscion squamosissimus, holds significant importance for the artisanal fisheries in the sub‐middle and lower courses of the São Francisco River, located in northeastern Brazil. To investigate the population structure of this species along its longitudinal profile, a total of 150 individuals (50 fish per ...
F. L. Freitas, N. S. Pereira, P. B. Pinheiro, R. Schroeder, A. T. Correia   +4 more
wiley   +1 more source

SISTEMAS TUTORES INTELIGENTES COMO APOYO EN EL PROCESO DE APRENDIZAJE

Redes de Ingeniería, 2015
El objetivo principal de este artículo es la identificación de las principales características de los tutores inteligentes, su origen y evolución los cuales pueden ofrecer elementos para la formulación de nuevos proyectos de investigación relacionados ...
Edwin Eduardo Millan Rojas, Yilver Estiven Molina Hurtatiz, Yois Smith Pascuas Rengifo   +2 more
doaj  

Alternativas estratégicas para el desarrollo de negocios verdes productivos del Caquetá (Colombia)

Universidad y Empresa
Objetivo: el artículo tiene como propósito identificar alternativas para el desarrollo de negocios verdes en las asociaciones productivas del municipio de Florencia (Caquetá, Colombia).
Parcival Peña Torres, Claritza Marlés Betancourt, Camilo Esteban Capera García   +2 more
doaj   +1 more source