Results 41 to 50 of about 53,510 (185)
Prisma Tecnológico, 2020 Finlay descubrió y describió la importancia del vector biológico a través de la teoría metaxénica de la transmisión de enfermedades por agentes biológicos, aplicándola a la fiebre amarilla transmitida por el mosquito Aedes aegypti[1] siendo el primero en
Aranzazu Berbey Alvarez, Armando Pinillo
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A checklist of the hepatics and anthocerotes of Panamá [PDF]
, 1998 A brief account of the geography and floristic regions of Panamá is complemented with an historical account of the liverwort studies of this country. This is followed by an annotated checklist of 289 taxa, including 93 new for Panamá.
Allen, Noris Salazar +5 more
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Trade costs, infrastructure, and dynamics in a global economy
International Journal of Economic Theory, Volume 22, Issue 1, Page 40-62, March 2026.Abstract This study develops a dynamic two‐country model with trade costs linked to international infrastructure stock. With variable markups and firm heterogeneity, the welfare impact of trade costs depends on firms' cost distribution. Governments engage in a dynamic public investment game, leading to multiple steady states. The dynamic equilibrium of
Akihiko Yanase
wiley +1 more source
Tecnociencia, 2001 La temperatura media de la superficie del planeta ha aumentado de 0.3 °C a 0.6 °C en el último siglo. De continuar este calentamiento, toda la vida se verá afectada.
Alfonso Pino, Jorge Espinosa
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First Confirmed Record of a Bull Shark in Lake Gatun, the Freshwater Body of the Panama Canal
Ecology and Evolution, Volume 16, Issue 2, February 2026.The Panama Canal, an engineered system critical for global shipping, has experienced repeated marine fish incursions into its freshwater portion since it opened > 100 years ago. With increased numbers of species and abundance of these marine migrants into the system, surprisingly, no credible reports of Bull Sharks have been made to date.
Gustavo A. Castellanos‐Galindo +7 more
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Papeles de Población, 2000 Apoyado en fuentes escritas durante y después de la construcción del Canal de Panamá (1904- 1914), este artículo examina la forma en que los estadunidenses conceptualizaron los trópicos de Panamá y el modo en que dicha conceptualización orientó su ...
Paul Sutter
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A novel circumscription and classification for Neurolaeneae (Asteraceae)
TAXON, Volume 75, Issue 1, February 2026.Abstract Neurolaeneae (Asteraceae) have a complicated taxonomic history. The tribe was described in 1927, but subsequently disregarded in 1977, and later reinstated as a tribe following a large‐scale phylogenetic analysis of Asteraceae in 2002. To date, this tribe has remained poorly studied and it has never been the subject of a comprehensive ...
Vinicius R. Bueno +4 more
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Papéis Avulsos de Zoologia, 2007 Ereymatermes Constantino is a nasute genus endemic to the Neotropical region, which included Ereymatermes rotundiceps Constantino from the forest of the lower Japurá River, AM, Brazil, and E. panamensis Roisin from the Panama Canal area.
Eliana M. Cancello, Carolina Cuezzo
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Inequality and megaprojects: The Panama Canal expansion [PDF]
, 2006 Cuando el control y gestión del Canal de Panamá pasó al estado panameño a finales de 1999, el gobierno comenzó a preparar un plan para su modernización. Este plan incluía la construcción de nuevas esclusas para que pudieran atravesarlo un mayor número de
Aledo Tur, Antonio
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