Results 31 to 40 of about 727,203 (295)

Sensitivity of the redshifted 21 cm signal from the Dark Ages to parameters of primordial magnetic fields

open access: yesAstronomy & Astrophysics
We analyse the impact of the decaying magnetic turbulence of primordial magnetic fields (PMFs) and ambipolar diffusion on the ionisation and thermal history of the Dark Ages Universe (30 ≤ z ≤ 300), and its imprint on the spectral profile of the global ...
Novosyadlyj B.   +3 more
doaj   +1 more source

Francesco Petrarca and the Parameters of Historical Research

open access: yesReligions, 2012
Although scholars in the first two generations of humanism wrote the histories drawing heavily on ancient Roman sources, Petrarca was the first humanist historian to focuses on the history of ancient Roma.
Ronald Witt
doaj   +1 more source

DAzLE: The Dark Ages z (redshift) Lyman-alpha Explorer

open access: yes, 2004
DAzLE is an near infrared narrowband differential imager being built by the Institute of Astronomy, Cambridge, in collaboration with the Anglo-Australian observatory.
Anthony Horton A   +7 more
core   +2 more sources

Generative models of 21 cm Epoch of Reionisation lightcones with 3D scattering transforms

open access: yesAstronomy & Astrophysics
The 21 cm signal from the Epoch of Reionisation (EoR) is observed as a 3D dataset known as a lightcone, consisting of two spatial sky plane axes and a redshift (frequency) axis.
Hothi Ian   +3 more
doaj   +1 more source

Britain in the Seventies – Our Unfinest Hour?

open access: yesRevue Française de Civilisation Britannique, 2017
In popular recollection, the 1970s have gone down as the dark ages, Britain’s gloomiest period since the second world war, set between Harold Wilson’s ‘swinging sixties’ and Margaret Thatcher’s divisive eighties. Forty years on, it is appropriate for the
Kenneth O. Morgan
doaj   +1 more source

The Dark and Middle Ages [PDF]

open access: yes, 2018
For the most part only Plato\u27s teachings supported by a limited version of Aristotelian cosmology supportive of Platonism survived the decline of ancient Greek philosophy during the Roman Empire. Christianity later prevailed, and toward the end of the
Jayne, Edward
core   +1 more source

Function‐driven design of a surrogate interleukin‐2 receptor ligand

open access: yesFEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang   +9 more
wiley   +1 more source

A GLIMPSE into the very faint end of the Hβ+[O III]λλ4960,5008 luminosity function at z ∼ 7 – 9 behind Abell S1063

open access: yesAstronomy & Astrophysics
We used the ultra-deep GLIMPSE JWST/NIRCam survey to constrain the faint end of the [O III]+Hβ luminosity function (LF) down to 1039erg s−1 at z ∼ 7 − 9 behind the lensed Hubble Frontier Field galaxy cluster Abell S1063.
Korber Damien   +14 more
doaj   +1 more source

The R/renaissance(s), Humanists And Classics

open access: yesThe Journal of Classics Teaching, 2018
First, where does the Renaissance fit in chronologically with other periods of the past? There is general agreement that the Renaissance should be dated from 1300 to 1650, though some believe that a more accurate and meaningful starting date would be ...
Jerome Moran
doaj   +1 more source

The first spectral line surveys searching for signals from the Dark Ages [PDF]

open access: yes, 2010
Our aim is to observationally investigate the cosmic Dark Ages in order to constrain star and structure formation models, as well as the chemical evolution in the early Universe. Spectral lines from atoms and molecules in primordial perturbations at high
Aa. Sandqvist   +92 more
core   +4 more sources

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