Results 11 to 20 of about 264 (94)

Design and Implementation of an Automated Safety Control System for the Jocelyn Bell Burnell Radio Telescope

open access: yesRadio Science, Volume 61, Issue 7, July 2026.
Abstract Large parabolic antennas used in radio astronomy are mechanically vulnerable to high wind loads, which can compromise both structural integrity and pointing calibration. We present the design, implementation, and validation of an automated safety control system for the 4.5 m Jocelyn Bell Burnell radio telescope at the Public University of ...
Rubén Benítez   +2 more
wiley   +1 more source

Geological Mapping and Structural Analysis of the Western Half of the Eminescu Quadrangle (H09), Mercury

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract We present the results of the first geological mapping of the western half of the Eminescu Quadrangle (H09) on Mercury. Multiple data sets from the NASA MESSENGER Mercury Dual Imaging System instrument were used to produce a geological map covering the area between 72°E and 108°E longitude and 22.5°N and 22.5°S latitude.
M. El Yazidi   +9 more
wiley   +1 more source

Trends in K‐12 science education research on students' interest, motivation and attitude towards science and technology: A systematic, reproductive and comparative review of 12 more years (2013–2024)

open access: yesReview of Education, Volume 14, Issue 1, April 2026.
Abstract This study presents a systematic, reproductive and comparative review of research on students' interest, motivation and attitude (I/M/A) towards science and technology (S&T) at K‐12 levels, covering the period 2013–2024. As a follow‐up to a previous systematic review (2000–2012), it describes and synthesizes findings from 170 peer‐reviewed ...
Patrice Potvin   +4 more
wiley   +1 more source

The Geographical Variation of Colour Change in the Arabian Killifish (Aphaniops dispar Sensu Lato) From Freshwater and Marine Ecosystems

open access: yesEcology and Evolution, Volume 16, Issue 2, February 2026.
Animals that live in a wide range of environments possess plastic traits such as colour change, but most research has only looked at this within single populations. In this study, we tested four populations of the Arabian killifish from marine and freshwater ecosystems, examining how well they change colour against different backgrounds.
Ateah Alfakih   +2 more
wiley   +1 more source

Pigments, Chromatophore Structure, and Gene Expression Underlying Colour Polytypy of a Panamanian Poison Frog

open access: yesMolecular Ecology, Volume 35, Issue 1, January 2026.
ABSTRACT Colour polytypism represents an example of phenotypic diversification shaped by genetic divergence and ecological pressures. Poison frogs of the genus Oophaga (Dendrobatidae) are highly polytypic in coloration, making them an ideal system for investigating the genetic and physiological basis of colour variation.
Vasiliki Mantzana‐Oikonomaki   +7 more
wiley   +1 more source

Size, Shape, Density, and Atmospheric Limit of (50000) Quaoar Revealed from 14 years of Stellar Occultation

open access: yesThe Astrophysical Journal
We present results from 28 stellar occultations by the large trans-Neptunian object (50000) Quaoar registered between 2018 and 2025. By performing a joint analysis of this occultation dataset, along with nine other published events, we were able to fit ...
Giuliano Margoti   +178 more
doaj   +1 more source

Math on a sphere: Making use of public displays in mathematics and programming education

open access: yesKnowledge Management & E-Learning: An International Journal, 2014
Science on a Sphere (SoS) is a compelling educational display installed at numerous museums and planetariums around the world; essentially the SoS display is a large spherical surface on which multicolor high-resolution depictions of (e.g.) planetary ...
Michael Eisenberg   +2 more
doaj  

Heavy metal pollution exposure affects egg coloration but not male provisioning effort in the pied flycatcher Ficedula hypoleuca

open access: yesJournal of Avian Biology, Volume 2025, Issue 1, January 2025.
Heavy metal pollution is known to negatively affect numerous traits in birds, including foraging, metabolism, immunity, and reproductive success. In this study, our primary aim was to assess the impact of metal pollution exposure on the visual appearance of the pied flycatcher Ficedula hypoleuca eggs.
Lisandrina Mari   +5 more
wiley   +1 more source

Designing a framework for teachers' integration of computational thinking into elementary science

open access: yesJournal of Research in Science Teaching, Volume 61, Issue 6, Page 1326-1361, August 2024.
Abstract As professional science becomes increasingly computational, researchers and educators are advocating for the integration of computational thinking (CT) into science education. Researchers and policymakers have argued that CT learning opportunities should begin in elementary school and span across the K‐12 grades.
Lautaro Cabrera   +6 more
wiley   +1 more source

Structure and Chronology of ṛgveda in a New Light

open access: yesPrachi Prajna, 2019
The paradigm shift in Indology necessitates a reexamination of the historical approach to the study of the ṛgveda in terms of its structure and chronology.
B. N. Narahari Achar
doaj  

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