Directed energy transfer due to orientational broadenning of energy levels in photosynthetic pigment solutions

The directed non-radiative energy transfer through monomeric molecules of chlorophyll “a” and pheophytin “a” at high concentrations (c ~ 10⁻²) in a rigid matrix of polyvinylbutyral has been found by using the nanosecond laser spectrofluorimeter. The phenomenon is caused by orientational broadening of pigment molecular spectra owing to its interaction with a solvent. The observed temporal shift of the luminescence spectrum to the red region in a nanosecond time scale as well as the red shift of the time integrated spectrum at a high concentration of pigment molecules and the monotonic growth of the luminescence lifetime with a shift to the red region of the spectrum served as indications of the directed energy transfer in the sample. The non-radiative energy transfer from monomeric molecules towards aggregates is also directly demonstrated by the deformation of instantaneous luminescence spectra in the long-wavelength range (λ > 700 nm). The role and the possibility of the directed energy transfer between molecules with orientationally broadened spectra in the biological systems are discussed

OPTIMIZATION OF METHOD OF OBTAINING HYDRATES BY CONDENSATION OF MOLECULAR BEAMS

Developed at the Institute of Thermal Physics, Ural Branch RAS method o f producing gas hydrates can be improved by cooling of molecular beam [1]. Trial experiments by cooling the beam in the Laval nozzle were conducted and showed the possibility o f using this method to improve the performance of the experimental arrangement.Работа выполнена при поддержке Российского фонда фундаментальных исследований (проекты № 15-08-02734-а, № 14-08-31007 мол а) и Программы фундаментальных исследований УрО РАН (проект № 15-1-2-7)

Заболеваемость раком предстательной железы, почки и мочевого пузыря в России и Омской области

Comparative analysis of morbidity of prostate cancer, kidney cancer, bladder cancer in Russia and Omsk region for period since 1998 up to 2005 showed, that prostate adenocarcinoma is dominating among all urological cancers. Morbidity increase of prostate cancer for this period amounted to 103,6%. Kidney cancer took a second place (16%). Morbidity of bladder cancer reduced and (-6,2%) — negative dynamics was revealed. As a whole year-on-year increase of morbidity of cancer in Omsk region constituted 2,5%.