Results 91 to 100 of about 64,748 (242)

Investigating the Impact of Virtual Reality Panoramas on Children's Water Safety Knowledge and Interest and Enjoyment

open access: yesJournal of Computer Assisted Learning, Volume 42, Issue 4, August 2026.
ABSTRACT Background Unintentional drowning is a leading cause of injury and death among children worldwide, and inadequate water safety education is a significant contributing factor. Innovative technologies such as virtual reality [VR] have the potential to teach children about safety and reduce the risk of accidental injury.
Allana Santiago   +5 more
wiley   +1 more source

TRAJE DE RAYAS [Material gráfico]

open access: yes, 1907
ADQUIRIDA POR EL COLECCIONISTA EN LAS PALMAS G.C.FOTO DE SEÑORITA DE PIE CON FALDA DE RAYAS, APOYADA EN MACETEROCopia digital. Madrid : Ministerio de Educación, Cultura y Deporte.
Lohr Rolle, Maximiliano, n. 1857
core  

Presencia de Bathyraja cousseauae (Batoidea; Rajiformes) en el Cabo de Hornos e islas Diego Ramírez, Chile Presence of Bathyraja cousseauae (Batoidea; Rajiformes) in Cape Horn and Diego Ramírez Islands, Chile

open access: yesLatin American Journal of Aquatic Research, 2008
Se informa el hallazgo de dos especímenes de Bathyraja cousseauae (Batoidea; Rajiformes; Ar-hynchobatidae) capturados en las cercanías de las islas Diego Ramírez y el Cabo de Hornos, sur de Chile.
Pablo R Reyes, Juan P Torres-Florez
doaj  

Methane emissions from canals draining tropical peatlands: Constraining temporal variability and emissions pathways

open access: yesLimnology and Oceanography Letters, Volume 11, Issue 4, July 2026.
Abstract Drainage canals are potential hotspots of methane (CH4) emissions from degraded peatlands in Southeast Asia. Estimates of CH4 emissions from these canals remain scarce, and both the temporal variability and pathways of CH4 emissions are uncertain.
Clarice R. Perryman   +8 more
wiley   +1 more source

Conservación de tiburones y rayas en el Caribe mexicano

open access: yes, 2020
La investigación científica ha contribuido a regular la actividad turística alrededor del tiburón ballena en el Caribe mexicano y sigue siendo necesaria para proteger a más integrantes de la fauna marina.
María del Pilar Blanco
core  

Assessing soil and native high Andean grassland quality under grazing: A case study from the wet Puna of Peru

open access: yesGrassland Science, Volume 72, Issue 3, Page 163-174, July 2026.
Abstract High Andean grasslands are vulnerable to changes in their nutritional quality and carbon sequestration capacity, especially in grazing systems. This study evaluated soil quality and native grasses by measuring carbon, physicochemical parameters, and the nutritional quality of predominant species in the wet Puna of Junín, Peru.
Alberto Arias‐Arredondo   +5 more
wiley   +1 more source

Caracterización morfológica de las estructuras dérmicas de rayas (Chondrichthyes: batoidea) desembarcadas en el litoral peruano

open access: yes, 2020
Las rayas o batoideos poseen una cobertura dérmica con variaciones morfológicas utilizadas para taxonomía. Esta investigación caracteriza morfológicamente las estructuras dérmicas de rayas desembarcadas en el litoral peruano, de acuerdo a las especies ...
Sánchez Rea, Angie Briggitt
core   +1 more source

Rayas de agua dulce (potamotrygonidae) de la amazonia colombiana: i. composición e información bioecológica [PDF]

open access: yes, 2019
En el marco de un proyecto colaborativo entre Defenders of Wildlife (DoW), la Fundación Omacha (FO) y el Instituto de Investigación de Recursos Biológicos Alexander von Humboldt (IAvH) de Colombia, se realizó una evaluación en campo durante la época ...
Morales-Betancourt, Monica A.   +1 more
core   +1 more source

Raya meridional

open access: yes, 2011
[ES] Definición del término Raya meridional en el diccionario Dicter. [EN] Definition of the word Raya meridional in the dictionary Dicter.
openaire   +2 more sources

Checklist of marine elasmobranchs of Colombia

open access: yesUniversitas Scientiarum, 2019
A review and update to the shark and ray species recorded for the marine waters of Colombia was carried out. A total of 206 species had been recorded in the literature, of which 138 species (76 sharks and 62 rays) could be confirmed from museum ...
Andrés Felipe Navia, Paola Mejía-Falla
doaj   +1 more source

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