Results 101 to 110 of about 91,809 (217)

Inducción de la biosíntesis local de antocianinas en frutos de Myrciaria dubia mediante lesiones mecánicas

open access: yesCiencia Amazónica (Iquitos), 2014
En las plantas las antocianinas cumplen roles fundamentales en sus interacciones con el medio ambiente, son una de las líneas de defensa contra los radicales libres, la radiación ultravioleta y el ataque de patógenos.
Daniel Motta Santillán   +5 more
doaj   +1 more source

Frente de Defensa de la Amazonía. El juicio a la petrolera Chevron-Texaco [PDF]

open access: yes, 2012
Saludos con todos y todas. Más que hablar de otros elementos quiero contarles algunos de los hechos que vivimos cotidianamente en la Amazonía ecuatoriana.
Fajardo, Pablo
core  

Functional Independence Related to Oral Hygiene and Periodontal Status in Patients With Down Syndrome

open access: yesInternational Journal of Dental Hygiene, EarlyView.
ABSTRACT Objectives This study aimed to investigate the relationship between functional independence, oral hygiene habits and periodontal status in patients with Down syndrome (DS). Methods A cross‐sectional observational study was conducted with 49 patients with Down Syndrome. Sociodemographic data, oral hygiene habits and functional independence were
Joana Albuquerque Bastos de Sousa   +6 more
wiley   +1 more source

Feeding ecology of an Amazonian electric knifefish under altered flood‐pulse dynamics caused by hydroelectric damming

open access: yesJournal of Fish Biology, EarlyView.
Abstract This study evaluated the effects of the controlled flood pulse on diet composition, trophic niche breadth and feeding intensity of Archolaemus janeae, an electric knifefish species with a restricted distribution in the Amazon Basin. Monthly samples were collected from December 2020 to November 2021 in the Volta Grande stretch of the Xingu ...
Ana F. V. N. M. Costa   +8 more
wiley   +1 more source

Insectos de la "una de gato" (Uncaria guianenesis y U. tomentosa : Rubiaceae), planta medical de la Amazonia peruana [PDF]

open access: yes, 1996
Two species of #Rubiaceae$ known as "una de gato", vernaculate name, are medicinal plants very used in the Peruvian Amazonia. Its excessive exploitation in the natural environment has made its cultivation necessary.
Couturier, Guy   +2 more
core  

A new, conspicuously pigmented Pyrrhulina (Teleostei: Characiformes: Lebiasinidae) from the Río Tigre, Loreto, Peru

open access: yesJournal of Fish Biology, EarlyView.
Abstract A new species of Pyrrhulina is described based on morphological and molecular evidence. Pyrrhulina punctata is distinguished from all congeners by the presence of a series of 7 to 16 irregular blotches of dark pigmentation on the flanks, equally marked in juveniles and adult specimens, the presence of 26–28 lateral‐line scales, 17–21 maxillary
Andre Netto‐Ferreira   +4 more
wiley   +1 more source

La pedagogía de Don Bosco y la experiencia de revitalización cultural identitaria en Bomboiza [PDF]

open access: yes, 2014
Con mucha razón se dice que la educación es el pilar fundamental para el desarrollo de las sociedades, pero también es el nervio vital de la cultura un pueblo y no puede quedar al margen de su realidad histórica, social o cultural; a través de la ...
Guarderas, Teresa
core  

A new species of inseminating catfish of the genus Tympanopleura (Siluriformes: Auchenipteridae) from the Ituxi River, Amazon River basin, northern Brazil, revealed by integrative taxonomy

open access: yesJournal of Fish Biology, EarlyView.
Abstract A new species of the genus Tympanopleura is described from the Iquiri River, a tributary of the Ituxi River, a right‐bank tributary to the Purus River, Amazon River, northern Brazil. The new species is distinguished from all its congeners by a combination of features, such as the presence of an intensely pigmented square‐shaped blotch on the ...
Frank Raynner V. Ribeiro   +4 more
wiley   +1 more source

Del aula tradicional hacia los metaversos: una revisión de literatura

open access: yesAcademia y Virtualidad
El propósito de este trabajo es interpretar los elementos pedagógicos y tecnológicos presentes en la literatura asociada al uso de tecnologías emergentes en el proceso de enseñanza.
Lina Saza Bustos   +3 more
doaj   +1 more source

Air exposure test in Colossoma macropomum juveniles maintained in water at suboptimal temperature: Physiological, metabolic and oxidative stress responses

open access: yesJournal of Fish Biology, EarlyView.
Abstract This study evaluated the physiological, metabolic and oxidative responses of Colossoma macropomum subjected to air exposure when maintained in water at suboptimal temperature (23°C). A total of 54 fish (81.33 ± 11.90 g) were distributed into nine tanks (6 fish per tank). For the air exposure test, 24 animals were exposed for 30 min and another
Gisele Cristina Favero   +8 more
wiley   +1 more source

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