Applicability of the absence of equilibrium in quantum system fully coupled to several fermionic and bosonic heat baths.

The time evolution of an occupation number is studied for a fermionic or bosonic oscillator linearly fully coupled to several fermionic and bosonic heat baths. The influence of the characteristics of thermal reservoirs of different statistics on the nonstationary population probability is analyzed at large times. Applications of the absence of equilibrium in such systems for creating a dynamic (nonstationary) memory storage are discussed.

Non-Markovian dynamics of quantum systems coupled with several mixed fermionic-bosonic heat baths.

For the fermionic or bosonic oscillator fully coupled to several heat baths with mixed statistics, the analytical expressions for the occupation numbers are derived within the non-Markovian quantum Langevin approach. Employing two or three heat baths and the Ohmic dissipation with Lorenzian cutoffs, the role of statistics of the system and heat baths in the dynamics of the system is studied.

Crystal structures and vibrational spectra of L-argininium(2+) bis(tetrafluoroborate) and L-argininium(2+) bis(perchlorate).

In the present work crystal structures of (L-ArgH2)(BF4)2 (I) and (L-ArgH2)(ClO4)2 (II) isostructural salts have been determined. They crystallize in triclinic system with space group P1 and Z = 1. Structure features of the (I) and (II) were compared with respective data of previously known (L-ArgH)(BF4) and (L-ArgH)(ClO4) salts with singly charged L-argininium(+) cation. Infrared and Raman spectra of the (I) and (II) are compared with spectra of (L-ArgH)(BF4) and (L-ArgH)(ClO4) salts. The presence of cation and anions and hydrogen bonds between them are reflected in the IR and Raman spectra. The crystals (I) and (II) exhibit second harmonic generation activity.

Non-Markovian dynamics of fermionic and bosonic systems coupled to several heat baths.

Employing the fermionic and bosonic Hamiltonians for the collective oscillator linearly FC-coupled with several heat baths, the analytical expressions for the collective occupation number are derived within the non-Markovian quantum Langevin approach. The master equations for the occupation number of collective subsystem are derived and discussed. In the case of Ohmic dissipation with Lorenzian cutoffs, the possibility of reduction of the system with several heat baths to the system with one heat bath is analytically demonstrated. For the fermionic and bosonic systems, a comparative analysis is performed between the collective subsystem coupled to two heat baths and the reference case of the subsystem coupled to one bath.

Interaction between hypericin and hemoglobin.

In the present work the hypericin interaction with hemoglobin was studied by absorption and fluorescence spectroscopy both under incubation in dark and visible light exposure. An absorption reduction in Soret band of hemoglobin (407 nm) was revealed under the photodynamic influence and incubation in dark with hypericin that had hypericin concentration and time dependent manner. Hypericin reduced the intensity of the hemoglobin emission peaks at 334 and 421 nm, correlating with hypericin concentration, incubation and irradiation time. An obvious increase in electrophoretic mobility of hemoglobin was observed under the incubation with hypericin. Simultaneously, a partial conversion of hemoglobin to met-hemoglobin and a pH decrease in hemoglobin solution were detected. Structural changes of hemoglobin caused by hypericin were accompanied by a change in peroxidase activity of the protein. Thus under the hypericin influence hemoglobin properties as a hydrogen peroxide detector could be improved and an effective determination of peroxide formation could be achieved. This makes hemoglobin an attractive 'recognition' element for construction of third-generation biosensors.