Results 11 to 20 of about 15,758 (267)

Catalog-to-catalog reductions

open access: yesThe Astrophysical Journal, 1990
Les problemes de reduction systematique des catalogues d'etoiles, afin de creer un systeme positionnel uniforme et un systeme de mouvement propre standard, sont analyses.
L. G. Taff   +2 more
openaire   +1 more source

The Future of Astrometry in Space

open access: yesFrontiers in Astronomy and Space Sciences, 2018
This contribution focuses on the importance of astrometry and on its future developments. Over the centuries astrometry has greatly contributed to the advance of the knowledge of the Universe.
Antonella Vallenari
doaj   +1 more source

Resource Discovery: Catalogs, Cataloging, and the User [PDF]

open access: yesLibrary Trends, 2007
This article considers resource discovery from the viewpoint of visually impaired people. Starting with the tasks of find, identify, select, and obtain, it examines how catalogs can be enhanced to assist visually impaired users. It then looks at the inclusion of specific data within catalog records and how they help the user.
openaire   +1 more source

Independent analysis of μδ data of ILS and INDLS catalogs to obtain the spin of the bright Gaia DR2 reference frame [PDF]

open access: yesSerbian Astronomical Journal, 2021
The Gaia DR2 reference frame should be without relative rotation to the quasars (QSOs) and consistent with the International Celestial Reference System (ICRS).
Damljanović G.   +2 more
doaj   +1 more source

Artificial Star Test for Crowded Field CCD Photometry

open access: yesOpen Astronomy, 2015
A new method of performing an artificial star test (AST) for crowded field stellar CCD photometry is proposed. This AST method is superior in the cases when it is necessary to account for varying photometric quality across the study field, arising due to
Stonkutė R., Vansevičius V.
doaj   +1 more source

Catalog design, catalog maintenance, catalog governance

open access: yesLibrary Collections, Acquisitions, & Technical Services, 2000
The design of library catalogs and the maintenance of their contents equals catalog governance, that is, professional responsibility for the catalog. The design of library catalogs and their contents are an example of the standards that are the hallmark of modern librarianship.
openaire   +2 more sources

A context‐dependent modulatory role for eIF6 in acquired resistance to vemurafenib in melanoma

open access: yesFEBS Letters, EarlyView.
Acquired resistance to vemurafenib upregulates the translation factor eIF6 in melanoma cells. Silencing eIF6 in resistant cells reduces proliferation and partially restores drug sensitivity, whereas its overexpression increases sensitivity across melanoma lines regardless of BRAF status, via modulation of mTOR, S6K, and MAPK signaling.
George Kyriakopoulos   +9 more
wiley   +1 more source

Chandra Observations of the X-Ray Binary Population in the Field of the Dwarf Galaxy IC 10

open access: yesAstronomy
IC 10 is a dwarf galaxy in Cassiopeia, located at a distance of 660 kpc, and hosts a young stellar population, a large number of Wolf–Rayet stars, and a large number of massive stars in general.
Sayantan Bhattacharya   +3 more
doaj   +1 more source

Spatial and single‐nuclei transcriptomics reveals idiosyncratic and generic patterns in papillary and anaplastic thyroid cancers

open access: yesMolecular Oncology, EarlyView.
Matched spatial transcriptomics and single‐nuclei RNA‐seq were generated for anaplastic and BRAFV600E papillary thyroid cancers revealing generic and tumor‐specific states occurring in cancer cells and in the tumor microenvironment. In this context, cancer dedifferentiation mirrored organoid maturation through ordered thyroid marker gain/loss ...
Adrien Tourneur   +11 more
wiley   +1 more source

Inhibition of cyclin‐dependent kinases 12/13 using CT7439 as a treatment for colorectal cancer with CDK12 upregulation

open access: yesMolecular Oncology, EarlyView.
The proposed mechanism of action for the CDK12/13 inhibitor and cyclin K degrader, CT7439. CDK12/13 inhibition interrupts transcription elongation, leading to increased DNA damage that results in cell death. This agent is a potentially novel treatment option for patients with colorectal cancer. Created in BioRender. Cyclin‐dependent kinase (CDK) 12 and
Wylie K. Watlington   +10 more
wiley   +1 more source

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