Results 71 to 80 of about 36,966 (215)

El sistema reproductor femenino de Zearaja chilensis (Guichenot, 1848) (Chondrichthyes, Rajidae): Gametogénesis y validación microscópica de los criterios de madurez [PDF]

open access: yes, 2015
Los condrictios son extremadamente susceptibles a la explotación pesquera debido, entre otras cosas, a sus adaptaciones reproductivas. Los conocimientos básicos de sus parámetros reproductivos son esenciales, ya sea desde el punto de vista ecológico como
Di Giacomo, Edgardo Ernesto   +2 more
core   +1 more source

Assessing the Impact of Wastewater Flow Rates on SARS‐CoV‐2 RNA Detection: Insights for Environmental Surveillance and Policymaking

open access: yesEnvironmental Quality Management, Volume 35, Issue 4, Summer 2026.
We meta‐analyzed 10 studies to assess whether influent flow rate affects SARS‐CoV‐2 RNA detection in wastewater treatment plants serving ≤60,000 inhabitants. The pooled odds ratio (2.08; 95% CI: 0.994–37; p = 0.053) showed no significant association between flow rate and detection probability.
André Felipe Bendix   +9 more
wiley   +1 more source

APORTES A LA BIOLOGÍA DE TIBURONES Y RAYAS DEMERSALES EN LA REGIÓN NORTE DEL CARIBE COLOMBIANO

open access: yesActa Biológica Colombiana, 2008
El presente estudio es una contribución al conocimiento biológico de los peces cartilaginosos en la región norte del Caribe colombiano. Los ejemplares examinados se capturaron con una red demersal, se determinó su peso, longitud total y estado de madurez
Fabian Moreno   +2 more
doaj  

Considerações sobre cruzamentos na pecuária de corte. [PDF]

open access: yes, 2015
Modelo de desempenho; Síntese de desempenho de animais cruzados no Brasil; Uso do cruzamento entre raças; Necessidade de pesquisas de ...
ALENCAR, M. M. de
core  

Learned Family on the Educator‐Kibbutzim—Knowledge, Kinship, and Social Transformation as Historical Legacy

open access: yesAnthropology &Education Quarterly, Volume 57, Issue 2, June 2026.
ABSTRACT This article explores how educator‐kibbutzim recruit socialist‐Zionist learning traditions to construct new forms of kinship. Bringing communities of practice theory to new kinship studies, we expand on the role of knowledge in bridging the social/biological.
Lauren Erdreich, Rotem Bar Israel
wiley   +1 more source

The Impact of Midwife Experience and Time of Birth on the Risk of Obstetric Anal Sphincter Injuries (OASIS)

open access: yesBirth, Volume 53, Issue 2, Page 267-275, June 2026.
Background: Obstetric anal sphincter injuries (OASIS) are a significant complication of vaginal birth. Methods: This retrospective cohort included 13,651 term spontaneous vaginal deliveries at a single medical center (2020‐2025). Midwife experience (early, mid, and highly experienced), shift timing, and OASIS incidence were analyzed.
Raneen Abu Shqara   +5 more
wiley   +1 more source

El mar, un lugar maravilloso para descubrir: una secuencia didáctica de enfoque comunicativo, para la comprensión de textos expositivos descriptivos, con estudiantes de quinto grado, de la institución educativa rural Miguel Pinedo Barros. [PDF]

open access: yes, 2019
Esta investigación pretende determinar la incidencia de una secuencia didáctica de enfoque comunicativo, en la comprensión de textos expositivos con FOS descriptiva, de los estudiantes de grado 5° de la Institución Educativa Rural Miguel Pinedo Barros ...
Cardozo Ortíz, Luis Alberto   +1 more
core  

Forging Technical Career Skills in Virtual Reality: How Immersion Shapes Learning and Engagement

open access: yesInternational Journal of Training and Development, Volume 30, Issue 2, Page 192-201, June 2026.
ABSTRACT Virtual reality (VR) is rapidly gaining popularity in vocational education and training (VET). We conducted a between‐subjects experiment to explore how VR modality (headset vs. desktop VR) influences trainee reactions and performance for a simulated welding task.
Benjamin D. Blachly   +3 more
wiley   +1 more source

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  

Review of multi-fidelity models

open access: yes
Multi-fidelity models provide a framework for integrating computational models of varying complexity, allowing for accurate predictions while optimizing computational resources.
Fernández-Godino, M. Giselle
core   +1 more source

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