in this study at first , an azo dye, 2,7- naphthalenediol, 2-[(4-bromophenyl)azo (bpand) as a ligand has been synthesized by addition of p-bromoaniline to the modified montomorillonite k10 clay. this ligand was characterized using 1h-nmr, uv-vis and ir spectroscopies. subsequently, its interaction with calf thymus deoxyribonucleicacid ,ct-dna was investigated in 5 mm phosphate buffer solution, ...

Very low-birth-weight premature infants often suffer from a variety of respiratory problems, including respiratory distress syndrome (RDS), hypopnea and periodic breathing, and apnea. These conditions are likely related to immaturity of the respiratory centers; yet how respiratory rhythms originating from these centers, including their complexity, relate to demographic measures of prematurity r...

2 /8ρσ the Enskog and Boltzmann diffusion coefficients [3], χ the contact value of the pair correlation function, se the excess entropy per particle, and A = 2.5. Using the excess entropy se/kB = −(4η − 3η )/(1 − η) and contact value χ = (2 − η)/2(1 − η) given by the Carnahan-Starling equation of state [4] (η = πρσ/6 packing fraction), we test this relation against the molecular dynamics simula...

We consider the entropy of systems of random transformations, where the transformations are chosen from the set of generators of a Z action. We show that the classical definition gives unsatisfactory entropy results in the higher-dimensional case, i.e. when d ≥ 2. We propose a new definition of the entropy for random group actions which agrees with the classical definition in the one-dimensiona...

The Tsallis entropy given for a positive parameter α can be considered as a generalization of the classical Shannon entropy. For the latter, corresponding to α = 1, there exist many axiomatic characterizations. One of them based on the well-known Khinchin-Shannon axioms has been simplified several times and adapted to Tsallis entropy, where the axiom of (generalized) Shannon additivity is playi...

We show how to determine the maximum and minimum possible values of one measure of entropy for a given value of another measure of entropy. These maximum and minimum values are obtained for two standard forms of probability distribution (or quantum state) independent of the entropy measures, provided the entropy measures satisfy a concavity/convexity relation. These results may be applied to en...