Results 61 to 70 of about 172,621 (248)

Campylobacter Species Isolated From Wild Birds in Switzerland and Comparison to Isolates From Food and Human Origin

open access: yesMicrobiologyOpen, Volume 14, Issue 6, December 2025.
Campylobacter strains (Blue) from wild birds cluster with strains from poultry and human (red), showing dissemination of strains from wild birds via food to human. ABSTRACT Campylobacter species, a major cause of gastroenteritis, have been frequently isolated from wild birds.
Marc J. A. Stevens   +4 more
wiley   +1 more source

Algunos Aspectos del Concurso del Avión Supersónico de Transporte. [PDF]

open access: yes, 1967
Ha recibido una gran publicidad el resultado del concurso del avión supersónico noteamericano (SST). Como es sabido, los contendientes eran, para las células, la Boeing con su avión de flecha variable B-2707 y la Lockhed con su avión en doble delta L ...
Sánchez Tarifa, Carlos
core   +1 more source

Perceived economic hardship and adjustment outcomes of children and adolescents: A systematic review and meta‐analysis

open access: yesJournal of Research on Adolescence, Volume 35, Issue 4, December 2025.
Abstract Most studies about the relation between economic hardship and child/adolescent outcomes include either objective assessments of economic hardship, such as income and social benefits, or both objective and subjective assessments without disentangling their effects.
Luísa A. Ribeiro, Serap Keles
wiley   +1 more source

Lucratividade e qualidade na distribuição de energia elétrica

open access: yesNova Economia, 2009
Privatization of electricity distribution in Brazil had, as one of its stated purposes, generation of sufficient revenue to guarantee service quality and full market coverage.
André Ghirardi   +2 more
doaj  

El techo y la Velocidad Máxima de los Aviones Equipados con Turborreactores. [PDF]

open access: yes, 1951
Desde que a principios de nuestro siglo aparece y comienza a desarrollarse la Aviación han existido dos factores, ligados estrechamente a ella, quienes en todo instante han marcado el grado de avance conseguido en dicho desarrollo.
Sánchez Tarifa, Carlos
core   +1 more source

Comentario de la sentencia c 039/2018 de 09 de mayo de 2018 de la Corte Constitucional de Colombia: sobre las reformas del iva y sus efectos en algunos principios y derechos constitucionales

open access: yesRevista Justicia y Derecho, 2018
En el caso sometido análisis la Corte Constitucional evaluó la posible vulneración entre otros derechos constitucionales, el derecho a la vida digna, la igualdad y la educación; en razón del incremento de la tarifa, la incorporación de una tarifa ...
Lucía del Carmen Bolaños Bolaños
doaj   +1 more source

Continuous Focal Group Follows Operated by a Drone Enable Analysis of the Relation Between Sociality and Position in a Group of Male Risso’s Dolphins (Grampus griseus)

open access: yesFrontiers in Marine Science, 2020
Relationships between social status and relative position of group-living animals have been described in a variety of species. For wild cetaceans, who spend most of their time underwater, collecting detailed, continuous data to assess such relationships ...
Karin Hartman   +3 more
doaj   +1 more source

Determinación de algunas Características Esenciales de los Turbo-reactores [PDF]

open access: yes, 1948
En este trabajo vamos a de terminar algunas características fundamentales de los turbo - reactores, pero refiriéndonos especialmente a aquellas que no han tenido divulgación aún en revistas y publicaciones.
Sánchez Tarifa, Carlos
core   +1 more source

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