Results 51 to 60 of about 86,432 (192)

Tras las huellas de Jorge Juan: una mirada geográfica sobre Francisco José de Caldas.

open access: yesEntorno Geografico, 2013
Francisco José de Caldas hizo parte del grupo de criollos ilustrados que desempeñaron un papel destacado ene l periodo anterior a la independencia de la Nueva Granada.
Luz Marina Duque Martínez
doaj   +1 more source

The Moon phases, eclipses and spatial relations: a piagetian study

open access: yesAmazônia, 2021
The results of an investigation that aimed to identify the solidarity between the understanding of the lunar phase’s phenomena, Eclipses and the construction of spatial relationships, together with elementary school students are presented in this work ...
Amanda de Mattos Pereira Mano   +1 more
doaj   +1 more source

Gemini/GMOS search of massive binaries in the ionizing cluster of 30 Dor [PDF]

open access: yes, 2008
If binaries are common among massive stars, it will have important consequences for the derivation of fundamental properties like the cluster age, IMF and dynamical mass. Making use of the multiplexing facilities of Gemini Multi Object Spectrograph (GMOS)
Binney   +9 more
core   +3 more sources

Seismic Velocity Variations, Ground Deformation and the Role of Fluids During a Low‐Energy Seismic Swarm

open access: yesGeophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract On March 9th $9\mathrm{th}$, 2023, three small earthquakes (3.8≤Mw≤4.5) $(3.8\le {M}_{w}\le 4.5)$ occurred near Umbertide (Central Italy), within 4 hours. Analyzing seismic ambient noise in the frequency band 0.1–1 Hz from six seismometers within 20 km of the Mw 4.5, we detect a significant drop in seismic velocity at the time of occurrence of
Eugenio Mandler   +7 more
wiley   +1 more source

Formação continuada em astronomia com professoras das séries iniciais no município de Canápolis, MG: um caso de parceira colaborativa

open access: yesEm Extensão, 2010
O presente trabalho relata resultados de algumas ações de um programa de educação continuada executado no município de Canápolis, MG, cujos conteúdos e metodologias estão voltados a explorar a realidade do professor em comparação aos resultados ...
Ludmila Bolina Costa   +3 more
doaj  

Química e astronomia

open access: yesCadernos de Astronomia, 2021
Desde tempos imemoriais que os seres humanos olham e tentam perceber o céu. Não sabiam bem o que eram aquelas luzes a brilhar e que se movimentavam de forma repetida. Hoje em dia parece muito fácil, mas demorou muito tempo a consolidar-se a imagem que atualmente temos do céu. E sobretudo, a sabermos qual era a sua composição química.
openaire   +2 more sources

Whipped and Mixed Warm Clouds in the Deep Sea

open access: yesGeophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Turbulence is indispensable to redistribute nutrients for all life forms larger than microbial, on land and in the ocean. Yet, the development of deep‐sea turbulence was not studied in three dimensions to date. As a disproportionate laboratory, an array of nearly 3,000 high‐resolution temperature sensors had been installed for three years on ...
Hans van Haren, KM3NeT collaboration
wiley   +1 more source

Ensino da astronomia no Brasil: educação formal, informal, não formal e divulgação científica

open access: yesRevista Brasileira de Ensino de Física
Este artigo deriva de uma pesquisa mais ampla sobre a educação em astronomia e a formação de professores, e apresenta um panorama geral sobre o tema em âmbito nacional.
Rodolfo Langhi, Roberto Nardi
doaj   +1 more source

Editorial - Reflexiones sobre la enseñanza de la astronomía [PDF]

open access: yesGóndola, Enseñanza y Aprendizaje de las Ciencias, 2018
¿Por qué enseñamos astronomía en las escuelas? Es más, ¿se debe enseñar astronomía en las escuelas?
Néstor Camino
doaj  

A hydrodynamical model of the circumstellar bubble created by two massive stars

open access: yes, 2012
Numerical models of the wind-blown bubble of massive stars usually only account for the wind of a single star. However, since massive stars are usually formed in clusters, it would be more realistic to follow the evolution of a bubble created by several ...
A. J. van Marle   +25 more
core   +3 more sources

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