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Content available remote Meson correlation function and screening mass in thermal QCD
100%
Open Physics
|
2012
|
tom 10
|
nr 2
342-348
EN
Analytical results for the spatial dependence of the correlation functions for all meson excitations in perturbative Quantum Chromodynamics, the lowest order, are calculated. The meson screening mass is obtained as a large distance limit of the correlation function. Our analysis leads to a better understanding of the excitations of Quark Gluon Plasma at sufficiently large temperatures and may be of relevance for future numerical calculations with fully interacting Quantum Chromodynamics.
EN
An important trait of tomato is the rate of fruit ripening, strongly dependent on ethylene production. The ripening-related ethylene synthesis in tomato is controlled mainly by 1-aminocyclopropane-1-carboxylate synthase LE-ACS2 and LE-ACS4 isoenzymes (Rottmann et al., 1991, J. Mol. Biol. 222: 937; Lincoln et al., 1993, J. Biol. Chem. 268: 19422; Barry et al., 2000, Plant Physiol. 123: 979). In spite of numerous reports on the LE-ACS2 and LE-ACS4 gene expression, only ones considered the genomic organisation each of these genes (Rottmann et al., 1991; Lincoln et al., 1993) reported one copy of each of these genes in tomato cv VF36. In this article we suggest that the genomic organisation of LE-ACS2 and LE-ACSS4 genes may depend on tomato cultivars and may differ from that described by the above authors. The results of Southern analyses of genomic DNAs from 17-day old seedlings (cultivars Jaga, Halicz, Betalux, New Yorker) imply that the genomic organisation of LE-ACS2 and LE-ACS4 genes in Polish cultivars differs from that reported for cv VF36.
3
Content available remote Survival of B c mesons in a hot plasma within a potential model
38%
EN
We extend a previous work on the study of heavy charmonia and bottomonia in a deconfined quark-gluon plasma by considering the B c family of mesons. With the introduction of this bound state of a charm and a beauty quark, we investigate at finite temperature the behavior of the quarkonium, in an energy region between the ψ and the Y states.
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