Results 61 to 70 of about 257,269 (299)

An Extremely Massive White Dwarf of the Symbiotic Classical Nova V407 Cyg as Suggested by the RS Oph and U SCO Models

open access: yesOpen Astronomy, 2012
We have analyzed the optical light curve of the symbiotic star V407 Cyg that underwent a classical nova outburst in 2010 March. Being guided by a supersoft X-ray phase observed during days 20-40 after the nova outburst, we are able to reproduce the light
Hachisu I., Kato M.
doaj   +1 more source

Autophagy in cancer and protein conformational disorders

open access: yesFEBS Letters, EarlyView.
Autophagy plays a crucial role in numerous biological processes, including protein and organelle quality control, development, immunity, and metabolism. Hence, dysregulation or mutations in autophagy‐related genes have been implicated in a wide range of human diseases.
Sergio Attanasio
wiley   +1 more source

High-Resolution Spectroscopy of the Hydrogen-Deficient Binary υ Sgr

open access: yesOpen Astronomy, 2012
The high resolution spectra of hydrogen-deficient binary υ Sgr are analyzed. The atmospheric parameters are Teff = 12300±200 K, log g = 2:5±0:5 and ξt = 5 - 15 kms−1 depending on the element. For Fe II ξt = 9:3 ± 0:3 kms−1. Iron is slightly underabundant
Kipper Tõnu, Klochkova Valentina G.
doaj   +1 more source

A stepwise emergence of evolution in the RNA world

open access: yesFEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

CHOICE AND VALIDATION OF TEAMBUILDING MODEL OF SERVICE ORGANIZATIONS MANAGEMENT

open access: yesВестник Донского государственного технического университета, 2018
A complex of teambuilding principles for the service organizations management is offered. A model of tripartite exchange based on the innovative organizational environment is described.
Sergey V. Petrov
doaj  

Discovery of a Long Thermonuclear X-Ray Burst from the Ultracompact Binary 4U 1850–087

open access: yesThe Astrophysical Journal
We report the detection of a long X-ray burst from the ultracompact binary 4U 1850–087. The type I X-ray burst was observed on MJD 60171.65 by the Monitor of All-sky X-ray Image and Neutron Star Interior Composition Explorer (NICER). We analyze the NICER
Yongqi Lu   +4 more
doaj   +1 more source

On a New Technique for Discovering Variable Stars

open access: yesOpen Astronomy, 2003
A technique for discovering variable stars based on the calculation of the correlation coefficients is proposed. Applications of the technique are shown on the results of numerical experiments and on the Hipparcos photometric data.
Mironov A. V.   +2 more
doaj   +1 more source

B cell mechanobiology in health and disease: emerging techniques and insights into therapeutic responses

open access: yesFEBS Letters, EarlyView.
B cells sense external mechanical forces and convert them into biochemical signals through mechanotransduction. Understanding how malignant B cells respond to physical stimuli represents a groundbreaking area of research. This review examines the key mechano‐related molecules and pathways in B lymphocytes, highlights the most relevant techniques to ...
Marta Sampietro   +2 more
wiley   +1 more source

On soft factors and transmutation operators

open access: yesJournal of High Energy Physics
The well known soft theorems state the specific factorizations of tree level gravitational (GR) amplitudes at leading, sub-leading and sub-sub-leading orders, with universal soft factors.
Fang-Stars Wei, Kang Zhou
doaj   +1 more source

Near-Infrared Colors of Carbon Stars in Cygnus

open access: yesOpen Astronomy, 2003
The J-H, H-K diagram based on the 2MASS Sky Survey for 140 carbon stars in Cygnus, which have been photometrically monitored with the Baldone Schmidt telescope, is discussed.
Alksnis A., Alksne Z.
doaj   +1 more source

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