Results 191 to 200 of about 509,719 (323)
Preliminary Classification of the Forms of Galaxies According to Their Stellar Population. II [PDF]
, 1959 W. W. Morgan
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Otolaryngology–Head and Neck Surgery, EarlyView.Abstract Objective This study aims to understand the utility of a stepwise technology‐based audiometry with rapid results (STARR) school screening protocol. Study Design A prospective cohort study. Setting Six elementary schools in a single school district in Minnesota.
Autefeh Sajjadi +15 more
wiley +1 more source
Facilitating learning in immersive virtual reality: Segmentation, summarizing, both or none?
Journal of Computer Assisted Learning, Volume 39, Issue 1, Page 218-230, February 2023., 2023 Abstract Introduction This study investigates the effectiveness of the segmentation principle from the cognitive theory of multimedia learning as well as the effectiveness of the generative learning strategy of summarization in immersive virtual reality (IVR) within a sample of preadolescents.
Sara Klingenberg +3 more
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On the Formation of Galaxies in a Steady State Universe [PDF]
, 1955 D. W. Sciama
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Homochiral Self‐Sorting During Macrocycle Formation and their Chiroptical Properties
ChemistryOpen, EarlyView.Imine condensation of C2‐symmetric chiral aldehydes with aliphatic amines results in 2 : 2 macrocycles lacking self‐sorting, whereas aromatic amines yield macrocycles with complete homochiral self‐sorting. These macrocycles exhibit unique chiroptical properties attributed to rigidification compared to the starting aldehydes.
Diptiprava Sahoo, Soumen De
wiley +1 more source
Journal of Cardiovascular Electrophysiology, Volume 34, Issue 1, Page 99-107, January 2023., 2023 Abstract Objectives Pulsed electric field (PEF) therapies employ punctuated energy delivery to kill cells in a volume of tissue through mechanisms that are not dependent on thermal processes. A key component to successful cardiac ablation procedures is ensuring the generation of transmural, contiguous ablation zones, which requires in‐depth knowledge ...
Atul Verma +6 more
wiley +1 more source
Physics Letters B, 2009 It is suggested that the recently observed size evolution of very massive compact galaxies in the early universe can be explained, if dark matter is in Bose Einstein condensate. In this model the size of the dark matter halos and galaxies depends on the correlation length of dark matter and, hence, on the the expansion of the universe.
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Zehn Jahre Gaia‐Messungen: Die hochgenaue Kartierung des Himmels
Physik in unserer Zeit, EarlyView.Das astrometrische Weltraumobservatorium Gaia der Europäischen Weltraumorganisation hat die astrometrische Forschung revolutioniert, indem es unter anderem präzise Positionen, Bewegungen und Entfernungen von fast zwei Milliarden Himmelsobjekten gemessen hat. Damit stellt es wertvolle Daten für fast alle Gebiete der Astrophysik bereit. Nach dem Ende der
Stefan Jordan
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A Supermassive Binary Black Hole Candidate in Mrk 501
GalaxiesUsing multifrequency observations, from radio to γ-rays of the blazar Mrk 501, we constructed their corresponding light curves and built periodograms using RobPer and Lomb–Scargle algorithms. Long-term variability was also studied using the power density
Gustavo Magallanes-Guijón +1 more
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The Scattering of Cosmic Rays by the Stars of a Galaxy [PDF]
, 1939 M. S. Vallarta, Richard P. Feynman
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