Results 51 to 60 of about 964,737 (198)

The Broad-Line and Narrow-Line Regions of the LINER NGC 4579

open access: yes, 2000
We report the discovery of an extremely broad H-alpha emission line in the LINER nucleus of NGC 4579. From ground-based observations, the galaxy was previously known to contain a Type 1 nucleus with a broad H-alpha line of FWHM = 2300 km/s and FWZI ...
Aaron J. Barth   +9 more
core   +2 more sources

The Distribution of H2O Maser Emission in the Nucleus of NGC 4945 [PDF]

open access: yes, 1997
We present the first interferometer map of the water maser emission in the active nucleus of NGC 4945. Although the declination of the galaxy is about -49 degrees, we were able to make the observations with the southernmost antennas of the Very Long ...
Ables J. G.   +11 more
core   +3 more sources

Evolution of red algal plastid genomes: ancient architectures, introns, horizontal gene transfer, and taxonomic utility of plastid markers. [PDF]

open access: yesPLoS ONE, 2013
Red algae have the most gene-rich plastid genomes known, but despite their evolutionary importance these genomes remain poorly sampled. Here we characterize three complete and one partial plastid genome from a diverse range of florideophytes. By unifying
Jan Janouškovec   +6 more
doaj   +1 more source

The Role of Mergers in Early-type Galaxy Evolution and Black Hole Growth [PDF]

open access: yes, 2010
Models of galaxy formation invoke the major merger of gas-rich progenitor galaxies as the trigger for significant phases of black hole growth and the associated feedback that suppresses star formation to create red spheroidal remnants.
Adelman-McCarthy   +21 more
core   +2 more sources

Periaqueductal gray matter echogenicity as a marker of migraine chronification: a case control study

open access: yesThe Journal of Headache and Pain, 2023
Background Migraine is one of the most prevalent and disabling medical diseases in the world. The periaqueductal gray matter and the red nucleus play an important role in its pathogenesis.
Dolores Vilas   +8 more
doaj   +1 more source

Artefactual Suboptimal Fixation Effect to Nuclear Staining on Erythrocytes of Lutjanus kasmira (Forsskål 1775)

open access: yesHayati Journal of Biosciences, 2022
This research presents the unusual staining characteristic of the teleosts red blood cells–the common bluestripe snapper Lutjanus kasmira, caught at Toc Tan (Allison) Reef, Truong Sa Archipelago, Vietnam, due to side effects of the delayed staining ...
Huu-Quyet Do   +3 more
doaj   +1 more source

HISTORICAL RECORD OF A SAUROPOD (DINOSAURIA: TITANOSAURIA) SPECIMEN AT THE MUSEO SEMINARIO VALPARAÍSO: THE FIRST DINOSAUR DISCOVERY OF CHILE?

open access: yesPublicación Electrónica de la Asociación Paleontológica Argentina
Since its founding in 1870, the Colegio Seminario San Rafael of Valparaíso has offered natural science-related courses, complemented by laboratory work. Thus, in 1881, five science “cabinets” were established within the school premises, and in 1886, the
Omar Vicencio-Campos   +4 more
doaj   +1 more source

Susceptibility-weighted MR imaging (SWI) of basal ganglia iron deposition in the early and advanced stages of Parkinson's disease

open access: yesНеврология, нейропсихиатрия, психосоматика, 2019
Parkinson's disease (PD) is the second most common neurodegenerative disease after Alzheimer's disease and the first one among the nosological entities of parkinsonism.
A. G. Trufanov   +5 more
doaj   +1 more source

Serendipitous discovery of the long-sought AGN in Arp 299-A

open access: yes, 2010
Context: The dusty nuclear regions of luminous infra-red galaxies (LIRGs) are heated by either an intense burst of massive star formation, an active galactic nucleus (AGN), or a combination of both.
A. Alberdi   +26 more
core   +1 more source

Carbocyanine dye usage in demarcating boundaries of the aged human red nucleus. [PDF]

open access: yesPLoS ONE, 2010
BackgroundThough the adult human magnocellular Red nucleus (mNr) is essentially vestigial and its boundaries with neighbouring structures have never been well demarcated, human studies in utero have shown a well developed semilunar mNr wrapping around ...
Satoru Onodera, T Philip Hicks
doaj   +1 more source

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