Results 31 to 40 of about 419,099 (196)

Variación espacial y detección de puntos críticos de COVID-19 en Panamá: un análisis basado en datos del censo

open access: yesRevista Hispanoamericana de Ciencias de la Salud
El COVID-19, una enfermedad infecciosa de origen zoonótico, se ha propagado globalmente impactando significativamente a Panamá. La identificación de zonas de riesgo (hotspots) mediante técnicas geoepidemiológicas es esencial para implementar medidas de ...
Roger Bonilla-Carrión   +2 more
semanticscholar   +1 more source

Validación de modelos geoestadísticos y convencionales en la determinación de la variación espacial de la fertilidad de suelos del Pacífico Sur de Costa Rica

open access: yes, 2017
Con el fin de validar los modelos geoestadisticos y convencionales generados a partir de una base de analisis quimicos de suelos, se realizo un meta-analisis de los datos y se estimo el semivariograma de mejor ajuste para utilizar el metodo de ...
Gabriel Garbanzo-León   +3 more
semanticscholar   +1 more source

Hydropower Regulation of Xingu River Discharge Structures Heterogeneous, Sector‐Specific Responses in Pacu Fisheries Along the River Continuum

open access: yesFisheries Management and Ecology, EarlyView.
ABSTRACT Hydroelectric dams are common in Amazonian tributaries under federal environmental licensing that requires long‐term fisheries monitoring. This study evaluated three fishing systems targeting “pacu” species (Serrasalmidae) in the Xingu River before, during, and after construction of the Belo Monte dam (2012–2023) across four river sectors ...
João Paulo Moura de Queiroz   +5 more
wiley   +1 more source

O MTCR e o desenvolvimento do VLS brasileiro: do início do Programa Espacial ao final do governo FHC [PDF]

open access: yes, 2016
TCC (graduação) - Universidade Federal de Santa Catarina. Centro Sócio-Econômico. Relações Internacionais.Este estudo trata-se de uma revisão de literatura que foi realizada através de artigos indexados em base de dados e tendo como fio condutor ...
Fontes, Peterson Wilson
core  

Tubo espacial: parte 1

open access: yes, 2016
Ensino Fundamental Final::Ciências NaturaisEste vídeo é a primeira parte do experimento "Tubo espacial" e mostra como montar o tubo sonoro e explica seu funcionamento com base no conceito de propagação da onda sonora por um ...
Projeto Brinca Ciência
core   +2 more sources

Distribución espacio-temporal de plaguicidas y clasificación de áreas de contaminación en un embalse al noreste de México: análisis espacial y multivariante

open access: yesTecnología y ciencias del agua
Este estudio analizó la distribución espacial y temporal de 13 plaguicidas en sedimento y tejido de lobina (Micropterus spp.), por técnicas de análisis espacial y multivariantes en la presa “Vicente Guerrero” (Tamaulipas, México).
Nazdry Briones-Escobedo   +4 more
doaj   +1 more source

Variación espacial y temporal de la herpetofauna en ecosistemas de sabanas inundables de la Orinoquía-Colombia

open access: yes, 2017
We compared the diversity of amphibians and reptiles in forest of vega, gallery forest and savannas in flooded savannas ecosystems. One sampling was conducted at three sites in each climatic season, using visual methods and encounter barriers of ...
Argelina Blanco-Torres   +2 more
semanticscholar   +1 more source

Subsistence hunting shapes the spatial variation of jaguar densities in community‐managed forests

open access: yesJournal of Zoology, EarlyView.
Jaguars and people can coexist in community‐managed forests, but distance matters. In Guatemala's Maya Biosphere Reserve, jaguar numbers increased markedly in areas harder to reach on foot, yet jaguars were still found near communities, showing that responsibly managed forests can support jaguar populations while allowing people to maintain traditional
L. Perera‐Romero   +5 more
wiley   +1 more source

Variación espacial en número de especies, abundancia y diversidad de peces en las Bahías de Huatulco, Oaxaca, México

open access: yes, 2017
Los peces arrecifales estan adaptados a diferentes caracteristicas de su habitat, por lo tanto, las diferencias en composicion y estructura pueden ser resultado de factores intrinsecos de cada sistema.
L. G. Juárez-Hernández   +1 more
semanticscholar   +1 more source

Still standing: persistence traits capture belowground plant functions beyond resource exploration and acquisition

open access: yesNew Phytologist, EarlyView.
Conceptual linkages between traits and plant functioning leads to three dimensions of variation in the belowground functional space. Summary Belowground plant trait research has predominantly focused on trade‐offs in fine‐root traits via the root economics space (RES).
Shersingh Joseph Tumber‐Dávila   +17 more
wiley   +1 more source

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