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Создание ручных систем самостоятельного информационного поиска и их применение

Лазарев, В. С. (1982)
Рассматриваются необходимость создания и совершенствования ручных систем самостоятельного информационного поиска (РССП) как эффективного дополнения к системам информационного обеспечения ученых и условия, которым должны отвечать РССП. Анализируются возможности использования в качестве РССП ряда информационных изданий....

Radiationless intermolecular energy transfer with participation of acceptor excited triplet states

Gurinovich, G. P.; Zenkevich, E. I.; Sagun, E. I. (1982)
Radiationless energy transfer between like and unlike molecules has been experimentally studied under conditions where acceptor molecules have been excited to the triplet state. Homogeneous singlet—triplet—triplet migration has been discovered in higbly concentrated chlorophyll “a” and pheophytin “a” solutions in castor oil at 183 K by measuring the variation of pigment relative quantum yields of fluorescence and triplet state formation as a function of exciting pulse intensity. Heterogeneous...

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

Rubinov, A. N.; Zenkevich, E. I.; Nemkovich, N. A.; Tomin, V. I. (1982)
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 shif...