Results 51 to 60 of about 56,626 (163)
Ensaio Pesquisa em Educação em Ciências, 2022 RESUMO: A investigação desenvolvida objetivou: analisar os conteúdos abordados pelas disciplinas de astronomia em universidades públicas do país, ora separado por esfera federal ou estadual, ora comparativamente, no intuito de se compreender quais os ...
Gustavo Iachel +2 more
doaj +1 more source
State of the Early Career Profession in Space Physics and Aeronomy: Climatological Survey Results
Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.Abstract The American Geophysical Union (AGU) Space Physics & Aeronomy (SPA) section comprises scientists who study the Sun, solar wind, and planetary magnetospheres, ionospheres, and thermospheric/mesospheric systems along with their interconnections.
R. C. Allen +11 more
wiley +1 more source
Satisfiability for relation-changing logics [PDF]
, 2018 Relation-changing modal logics (RC for short) are extensions of the basic modal logic with dynamic operators that modify the accessibility relation of a model during the evaluation of a formula.
Areces, Carlos Eduardo +3 more
core +1 more source
Enseñanza de las Ciencias, 2015 En aquesta recerca s'estudien els escrits astronòmics i matemàtics de Fra Martín Sarmiento i s'analitzen les seves propostes sobre l'educació científica de la joventut.
Uxío Pérez Rodríguez
doaj +1 more source
Wasserstoffaktivierung über Dihydrid‐Bildung an einem Rh1/Fe3O4(001)‐Einzelatomkatalysator
Angewandte Chemie, Volume 138, Issue 14, 27 March 2026.Die Deuterium‐ (Wasserstoff‐)Adsorption am Einzelatomkatalysator Rh1/Fe3O4(001) induziert keinen D‐ (H‐)Spillover auf den reduzierbaren Fe3O4‐Träger. Stattdessen bildet sich eine Rh1‐Dihydrid‐Spezies (Rh−2D bzw. Rh−2H), dessen Wasserstoff beim Tempern desorbiert. ZUSAMMENFASSUNG Die Wasserstoffaktivierung ist ein zentraler Schritt in der katalystischen
Chunlei Wang +12 more
wiley +1 more source
Estimating the mass of CMEs from the analysis of EUV dimmings [PDF]
, 2019 Context. Reliable estimates of the mass of coronal mass ejections (CMEs) are required to quantify their energy and predict how they affect space weather.
Balmaceda, Laura Antonia +4 more
core +1 more source
Sobre Manuel Toharia, Historia mínima del cosmos
Historia Mexicana El Colegio de México, 2018 -
Josep Simon
doaj +1 more source
Suprathermal Soliton Solutions to Nonlinear Schrödinger Equation
Contributions to Plasma Physics, Volume 66, Issue 3, March 2026.ABSTRACT Maxwell distributions are very difficult to find in the low‐pressure environment far away the Earth atmosphere, permeated by high temperatures, various types of radiation, highly energetic particles, space debris, and subjected to microgravity, presenting crucial challenges for spacecraft design and operations, and affecting astronaut's health.
F. E. M. Silveira +2 more
wiley +1 more source
Environment of 1 ≤ z ≤ 2 MIR selected obscured and unobscured AGNs in the Extended Chandra Deep Field South [PDF]
, 2017 Context. In unified models, different types of active galaxy nuclei (AGN) correspond to a single class of objects, where their observed differences are solely due to the different orientations of the obscuring material around the central inner regions ...
Bornancini, Carlos Guillermo +2 more
core +2 more sources
Ensaio Pesquisa em Educação em CiênciasApresentamos neste artigo uma análise sobre as publicações relacionadas à Astronomia nas últimas décadas, presentes em dois perió dicos de ensino de Física no país: o Caderno Brasileiro de Ensino de Física e a Revista Brasileira de Ensino de Física ...
Gustavo Iachel, Roberto Nardi
doaj +1 more source