4 research outputs found
Effects of initial-state dynamics on collective flow within a coupled transport and viscous hydrodynamic approach
We evaluate the effects of preequilibrium dynamics on observables in
ultrarelativistic heavy-ion collisions. We simulate the initial nonequilibrium
phase within A MultiPhase Transport (AMPT) model, while the subsequent
near-equilibrium evolution is modeled using (2+1)-dimensional relativistic
viscous hydrodynamics. We match the two stages of evolution carefully by
calculating the full energy-momentum tensor from AMPT and using it as input for
the hydrodynamic evolution. We find that when the preequilibrium evolution is
taken into account, final-state observables are insensitive to the switching
time from AMPT to hydrodynamics. Unlike some earlier treatments of
preequilibrium dynamics, we do not find the initial shear viscous tensor to be
large. With a shear viscosity to entropy density ratio of , our model
describes quantitatively a large set of experimental data on Pb+Pb collisions
at the Large Hadron Collider(LHC) over a wide range of centrality: differential
anisotropic flow , event-plane correlations, correlation
between and , and cumulant ratio .Comment: 10 pages, v2: minor revisio
Data_Sheet_1_Genomic and ecological approaches to identify the Bifidobacterium breve prototype of the healthy human gut microbiota.docx
Members of the genus Bifidobacterium are among the first microorganisms colonizing the human gut. Among these species, strains of Bifidobacterium breve are known to be commonly transmitted from mother to her newborn, while this species has also been linked with activities supporting human wellbeing. In the current study, an in silico approach, guided by ecology- and phylogenome-based analyses, was employed to identify a representative strain of B. breve to be exploited as a novel health-promoting candidate. The selected strain, i.e., B. breve PRL2012, was found to well represent the genetic content and functional genomic features of the B. breve taxon. We evaluated the ability of PRL2012 to survive in the gastrointestinal tract and to interact with other human gut commensal microbes. When co-cultivated with various human gut commensals, B. breve PRL2012 revealed an enhancement of its metabolic activity coupled with the activation of cellular defense mechanisms to apparently improve its survivability in a simulated ecosystem resembling the human microbiome.</p
Table_1_Genomic and ecological approaches to identify the Bifidobacterium breve prototype of the healthy human gut microbiota.XLSX
Members of the genus Bifidobacterium are among the first microorganisms colonizing the human gut. Among these species, strains of Bifidobacterium breve are known to be commonly transmitted from mother to her newborn, while this species has also been linked with activities supporting human wellbeing. In the current study, an in silico approach, guided by ecology- and phylogenome-based analyses, was employed to identify a representative strain of B. breve to be exploited as a novel health-promoting candidate. The selected strain, i.e., B. breve PRL2012, was found to well represent the genetic content and functional genomic features of the B. breve taxon. We evaluated the ability of PRL2012 to survive in the gastrointestinal tract and to interact with other human gut commensal microbes. When co-cultivated with various human gut commensals, B. breve PRL2012 revealed an enhancement of its metabolic activity coupled with the activation of cellular defense mechanisms to apparently improve its survivability in a simulated ecosystem resembling the human microbiome.</p
Image_1_Genomic and ecological approaches to identify the Bifidobacterium breve prototype of the healthy human gut microbiota.PDF
Members of the genus Bifidobacterium are among the first microorganisms colonizing the human gut. Among these species, strains of Bifidobacterium breve are known to be commonly transmitted from mother to her newborn, while this species has also been linked with activities supporting human wellbeing. In the current study, an in silico approach, guided by ecology- and phylogenome-based analyses, was employed to identify a representative strain of B. breve to be exploited as a novel health-promoting candidate. The selected strain, i.e., B. breve PRL2012, was found to well represent the genetic content and functional genomic features of the B. breve taxon. We evaluated the ability of PRL2012 to survive in the gastrointestinal tract and to interact with other human gut commensal microbes. When co-cultivated with various human gut commensals, B. breve PRL2012 revealed an enhancement of its metabolic activity coupled with the activation of cellular defense mechanisms to apparently improve its survivability in a simulated ecosystem resembling the human microbiome.</p