Results 71 to 80 of about 78,373 (324)

The Asiago-ESO/RASS QSO Survey. I.The Catalog and the Local QSO Luminosity Function

, 2000
This paper presents the first results of a survey for bright quasars (V < 14.5 and R30. The photometric database is derived from the GSC and USNO catalogs.
A. Grazian, A. Omizzolo, A. Pizzella, Boyle B. J., Cavaliere A., Cristiani S., Cristiani S., Franceschini A., Goldschmidt P., Hasinger G., Kohler T., La Franca F., Miyaji T., Monet D., S. Cristiani, V. D’Odorico, Voges W., Yuan W.   +17 more
core   +1 more source

Hematopoietic (stem) cells—The elixir of life?

FEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo, Jonah Anderson, Emilie Dinh Vedrenne, Noël Yeh Martín, Jette Lengefeld   +4 more
wiley   +1 more source

The role of histone modifications in transcription regulation upon DNA damage

FEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

Study on declination angle of diamond indenter on TiAl alloy nanoindentation

AIP Advances
In this paper, the molecular dynamics method is used to model TiAl alloy. The influence of the declination angle of the indenter on the nanoindentation of TiAl alloy is discussed.
Lijun Chen
doaj   +1 more source

Sunspot numbers: Implications on Eastern African rainfall

South African Journal of Science, 2014
Following NASA’s prediction of sunspot numbers for the current sunspot cycle, Cycle 24, we now include sunspot numbers as an explanatory variable in a statistical model. This model is based on fitting monthly rainfall values with factors and covariates
Francis Gachari, David M. Mulati, Joseph N. Mutuku   +2 more
doaj   +1 more source

Astrometric positions for 18 irregular satellites of giant planets from 23 years of observations

, 2015
The irregular satellites of the giant planets are believed to have been captured during the evolution of the solar system. Knowing their physical parameters, such as size, density, and albedo is important for constraining where they came from and how ...
Andrei, A. H., Arlot, J. -E., Assafin, M., Benedetti-Rossi, G., Braga-Ribas, F., Camargo, J. I. B., Desmars, J., Dias-Oliveira, A., Duchemin, Y., Gomes-Júnior, A. R., Lainey, V., Morgado, B. E., Neto, D. N. da Silva, Thuillot, W., Vieira-Martins, R.   +14 more
core   +3 more sources

SUMSS: A Wide-Field Radio Imaging Survey of the Southern Sky. I. Science goals, survey design and instrumentation [PDF]

, 1998
The Molonglo Observatory Synthesis Telescope, operating at 843 MHz with a 5 square degree field of view, is carrying out a radio imaging survey of the sky south of declination -30 deg.
Amy S. W., Baars J. W. M., Benn C. R., Campbell-Wilson D., Campbell-Wilson D., Cram L. E., D. C.-J. Bock, Dunlop J. S., Ebeling H., Elaine M. Sadler, Green A. J., Hunstead R. W., Kooiman B. L., Large M. I., Large M. I., Large M. I., M. I. Large, Maddox S. J., Manchester R. N., Mills B. Y., Mills B. Y., Peacock J. A., Robertson J. G., Unewisse A. M., Wunderlich E.   +24 more
core   +2 more sources

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

Statistical analysis of low latitude spread F at the American, Atlantic, and Pacific sectors using digisonde observations

Frontiers in Astronomy and Space Sciences
Statistical analysis of low latitude spread F is presented for three different longitudinal sectors from Jicamarca (12°S, 76.8°W, −2.5° declination angle) from 2001 to 2016, Ascension Island (7.9°S, 14.4°W, −15.09° declination angle) from 2000 to 2014 ...
Preeti Bhaneja, Jeff Klenzing, Edgardo E. Pacheco, Gregory D. Earle, Terrence W. Bullett   +4 more
doaj   +1 more source

UK 2009-2010 repeat station report

Annals of Geophysics, 2013
The British Geological Survey is responsible for conducting the UK geomagnetic repeat station programme. Measurements made at the UK repeat station sites are used in conjunction with the three UK magnetic observatories: Hartland, Eskdalemuir and Lerwick,
Thomas J.G. Shanahan, Anthony P. Swan, Susan Macmillan   +2 more
doaj   +1 more source