Results 151 to 160 of about 339,788 (346)

The Extended Ionized Nebulosities Surrounding the Active Galaxies NGC 6215, A 0945-30 and MCG-2-58-22 [PDF]

, 1989
Florence Durret
openalex   +1 more source

Tools for Learning—Promoting Reflection for Student Teachers' Development of PCK

Journal of Research in Science Teaching, EarlyView.
ABSTRACT This paper investigates how the coherent integration of three different tools for reflection during a science methods course can contribute to student teachers' planning and enactment of science teaching, that is, their development of pedagogical content knowledge (PCK).
Pernilla Nilsson, Anne‐Marie Cederqvist   +1 more
wiley   +1 more source

Lists of Active Galaxies, Problems of Detection and Statistics [PDF]

, 1987
R. D. Cannon
openalex   +1 more source

The Effect of Seductive Details on Knowledge Retention in Physics Videos: A Mixed Methods Study

Journal of Research in Science Teaching, EarlyView.
ABSTRACT Research reports that interesting but irrelevant information, seductive details, in teaching material can impede learning. In science education, the inclusion of historical narratives in lessons to promote interest has been recommended but may hinder learning.
Richard Brock, Liam Cini O'Dwyer, Ben Rogers   +2 more
wiley   +1 more source

From seagull to hummingbird: New diagnostic methods for resolving galaxy activity [PDF]

arXiv
Context. A major challenge in astrophysics is classifying galaxies by their activity. Current methods often require multiple diagnostics to capture the full range of galactic activity. Furthermore, overlapping excitation sources with similar observational signatures complicate the analysis of a galaxy's activity. Aims.
arxiv  

The Role of Active Galactic Nucleus Winds in Galaxy Formation: Connecting AGN Outflows at Low Redshifts to the Formation/Evolution of Their Host Galaxies

The Astronomical Journal
Using Sloan Digital Sky Survey (SDSS) spectra, we applied an automatic method to search for outflows (OFs) in three large samples of narrow-line active galactic nuclei (AGN) at low redshifts ( z < 0.4), separated into three spectral activity classes ...
Juan Pablo Torres-Papaqui, Roger Coziol, Aitor C. Robleto-Orús, Karla A. Cutiva-Alvarez, Paulina Roco-Avilez   +4 more
doaj   +1 more source

Composition of White Rhinoceros Colostrum and Changes During Early Lactation to Mature Milk

Zoo Biology, EarlyView.
The colostrum phase of white rhinoceros milk ends after 2 days of lactation. The mature milk phase commences after 5 days. The fat content peaks at days 3–4. The Δ9‐desaturase 16 and ‐18 indexes peak at days 2–3. ABSTRACT The proximate composition of milk from seven free‐ranging white rhinoceroses during the first 20 days of lactation is reported with ...
Gernot Osthoff, Arnold Hugo, Petronel Nieuwoudt   +2 more
wiley   +1 more source

Different Dependence of Narrow Hα Line Luminosity on Optical Continuum Luminosity between Star-forming Galaxies and Type 2 Active Galactic Nuclei: Globally Negative AGN Feedback in Local Type 2 AGN?

The Astrophysical Journal
In this manuscript, clues are provided to support globally negative active galactic nuclei (AGN) feedback on star formation in the host galaxies of the local low-redshift Sloan Digital Sky Survey (SDSS) Type 2 AGN, based on the different dependence of ...
XueGuang Zhang
doaj   +1 more source

ALMA Band 3 Source Counts: A Machine Learning Approach to Contamination Mitigation below 5 Sigma

Galaxies
We performed differential number counts down to 4.25 sigma using ALMA Band 3 calibrator images, which are known for their high dynamic range and susceptibility to various types of contamination.
Ivano Baronchelli, Matteo Bonato, Gianfranco De Zotti, Viviana Casasola, Michele Delli Veneri, Fabrizia Guglielmetti, Elisabetta Liuzzo, Rosita Paladino, Leonardo Trobbiani, Martin Zwaan   +9 more
doaj   +1 more source

Optical properties of active galaxies with ultra-soft X-ray spectra [PDF]

, 1992
E. M. Puchnarewicz, K. O. Mason, F. Cordova, J. F. Kartje, G. Branduardi‐Raymont, J. P. D. Mittaz, Paul Murdin, J. R. Allington‐Smith   +7 more
openalex   +1 more source