We derive an expression for resonance energy transfer between a pair of chromophores embedded in a condensed medium by considering the energy splitting of the chromophores from their resonant excited states. We employ time-dependent density functional response theory in our derivation. The linear response theory treatment is rigorous within the framework of time-dependent density functional the...

aim : we evaluated the effectiveness of a synbiotic in the treatment of childhood functional abdominal pain (fap). background: probiotics are effective in the treatment of functional gastrointestinal disorders in adult patients, but there is lack of information in children. patients and methods: children with fap, based on the rome iii criteria ( n = 115, aged 6-18 years), were randomized to re...

in this paper, we introduce fractional order of a planar fractional prey-predator system with a nonmonotonic functional response and anti-predator behaviour such that the adult preys can attack vulnerable predators. we analyze the existence and stability of all possibleequilibria. numerical simulations reveal that anti-predator behaviour notonly makes the coexistence of the prey and predator po...