The detailed electronic structures of fluorescent chromophores are important for their use in imaging of living cells. A series of green fluorescent protein chromophore derivatives is examined by magnetic circular dichroism (MCD) spectroscopy, which allows the resolution of more bands than plain absorption and fluorescence. Observed spectral patterns are rationalized with the aid of time-depend...

Influence of chirality on the optical second harmonic generated from planar array of G-shaped metamaterials is studied. Circular dichroism of these nanostructures manifests itself via different efficiency of left and right circularly polarized second harmonic that is observed for the samples of different handedness. This difference allows to distinguish between the two enantiomers.

In this study we have showed combined effect of two single point mutations S311C (LipR2) and R214C (LipR3) on the protein stability and overall change in biochemical properties. We found that both of these mutations are near the surface and individually enhanced the thermal stability of the protein (T1/2 for S311C=4.5 h & R214C=7 h at 60°C). But, their combined effect was not additive on thermo...

Objective: Aging is associated with endothelial dysfunction and arthrosclerosis. This study aimed to assesses the impact of combined circular training (resistance-interval) on endothelial-derived microparticles (EMPs) as a marker of endothelial function and cardiovascular risk factors in overweight elderly men. Materials and Methods: In this experimental study, twenty four overweight men aged ...

A very general beam solution of the paraxial wave equation in circular cylindrical coordinates is presented. We call such a field a circular beam (CiB). The complex amplitude of the CiB is described by either the Whittaker functions or the confluent hypergeometric functions and is characterized by three parameters that are complex in the most general situation. The propagation through complex A...

Experimental time courses often reveal a nonlinear behaviour. Analysing these nonlinearities is even more challenging when the observed phenomenon is cyclic or oscillatory. This means, in general, that the data describe a circular trajectory which is caused by periodic gene regulation. Nonlinear PCA (NLPCA) is used to approximate this trajectory by a curve referred to as nonlinear component. Wh...

We analyze the problem of perfectly elastic billiard on a circular table with exactly one permitted bounce. We present a new and intuitively appealing geometric derivation of the solution. Analyzing the solution with respect to the number of permitted paths for any given scenario, we nd an analytical expression for a separatrix between regions with two and four solutions. We identify and discus...

In 1963 by Dulbecco and Vogt (1963) and Weil and Vinograd (1963) discovered that doublestranded DNA of the polyoma virus exists in a closed circular form. At present it is generally acknowledged that this form is typical of bacterial DNA and of cytoplasmic DNA in animals. Furthermore, giant DNA molecules in higher organisms form loop structures held together by protein fasteners in which each l...