2,993 research outputs found
Intermittency as a universal characteristic of the complete chromosome DNA sequences of eukaryotes: From protozoa to human genomes
Large-scale dynamical properties of complete chromosome DNA sequences of
eukaryotes are considered. By the proposed deterministic models with
intermittency and symbolic dynamics we describe a wide spectrum of large-scale
patterns inherent in these sequences, such as segmental duplications, tandem
repeats, and other complex sequence structures. It is shown that the recently
discovered gene number balance on the strands is not of random nature, and a
complete chromosome DNA sequence exhibits the properties of deterministic
chaos.Comment: 4 pages, 5 figure
On the 2015 outburst of the EXor variable star V1118 Ori
After a long-lasting period of quiescence of about a decade, the source V1118
Ori, one of the most representative members of the EXor variables, is now
outbursting. Since the initial increase of the near-infrared flux of about 1
mag (JHK bands) registered on 2015 September 22, the source brightness has
remained fairly stable. We estimate DeltaV about 3 mag with respect to the
quiescence phase. An optical/near-IR low-resolution spectrum has been obtained
with the Large Binocular Telescope instruments MODS and LUCI2, and compared
with a spectrum of similar spectral resolution and sensitivity level taken
during quiescence. Together with the enhancement of the continuum, the outburst
spectrum presents a definitely higher number of emission lines, in particular
HI recombination lines of the Balmer, Paschen, and Brackett series, along with
bright permitted lines of several species, forbidden atomic lines, and CO
ro-vibrational lines. Both mass accretion and mass loss rates have
significantly increased (by to about an order of magnitude, mass accretion rate
= 1.2-4.8 10^-8 M_sun/yr, mass loss rate = 0.8-2 10^-9 M_sun/yr) with respect
to the quiescence phase. If compared with previous outbursts, the present one
appears less energetic. Alternatively, it could already be in the fading phase
(with the maximum brightness level reached when the source was not visible),
or, viceversa, still in the rising phase.Comment: Accepted ApJ Letter
Effects of irradiation of stainless steel and TiMoN coatings on stainless with lowenergy Alpha-particles, Krypton and Xenon ions
One of the directions for development of new
structural materials for nuclear installations is deposition
of protective coatings with high stability of
physical and mechanical properties to ionizing irradiation
on the existing structural materials. In particular,
this applies to the nuclear reactors of generation
IV, among which are considered as promising
reactors with liquid metal and gas coolant..
Effects of irradiation of stainless steel and TiMoN coatings on stainless with lowenergy Alpha-particles, Krypton and Xenon ions
One of the directions for development of new
structural materials for nuclear installations is deposition
of protective coatings with high stability of
physical and mechanical properties to ionizing irradiation
on the existing structural materials. In particular,
this applies to the nuclear reactors of generation
IV, among which are considered as promising
reactors with liquid metal and gas coolant..
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