Zobrazeno 1 - 10
of 34
pro vyhledávání: '"K B, Tolpygo"'
Autor:
K. B. Tolpygo, Helen A. Grebneva
Publikováno v:
International Journal of Quantum Chemistry. 62:115-124
Some types of atomic vibrations in a chain of the DNA type constructed of G-C pairs were studied. These are the atomic vibrations of the lateral groups of guanine and N(3)H(1)H(2) of cytosine connected by the hydrogen bond h-b-1 and the vibrations of
Publikováno v:
physica status solidi (b). 183:497-504
Shallow acceptor states in crystals with diamond and sphalerite type structures are investigated by analytical and numerical methods, proposed by the authors for an exciton problem previously. The complicated valence band structure and the chemical n
Autor:
S V, Bespalova, K B, Tolpygo
Publikováno v:
Biofizika. 43(3)
The model of muscle contraction suggested in [1] is based on the hypothesis that the first step of the conversion of chemical energy delta E (which is stored in adenosine-5'-triphosphate) is the excitation of the hydrogen bond in the actin-myosin sys
Autor:
S V, Bespalova, K B, Tolpygo
Publikováno v:
Biofizika. 41(1)
The process of sarcomere membranes approaching under the action of actin and myosin filament stretching is studied theoretically. In elaboration of previous studies it is supposed that this stretching is due to the formation of hydrogen bonds excited
Autor:
S V, Bespalov, K B, Tolpygo
Publikováno v:
Biofizika. 38(1)
Statistics of the hydrogen bond formation and break in a bundle of actin and myosin filaments realizing the attractive force in the sarcomere of a muscle is studied. Purely mechanical problem of the attractive-force formation and motion of myosin hea
Autor:
E A, Grebneva, K B, Tolpygo
Publikováno v:
Biofizika. 35(3)
A theory of radiationless transitions of protons of the hydrogen bonds between the paired DNA bases is constructed. The lifetime of excited h-b-1 bond in guanine-cytosine pair is found to be 4.6 x 10(-9) sec. The dependence of frequencies, amplitudes
Autor:
K. B. Tolpygo, I. M. Reznik
Publikováno v:
Journal of Structural Chemistry. 24:501-517
Autor:
K. B. Tolpygo, S. M. Zubkova
Publikováno v:
Physica Status Solidi (b). 95:341-348
The theory of direct excitons in crystals of diamond and sphalerite type is generalized to the indirect exciton case. The problem is solved by the variational method taking into account the anisotropy and the nonparabolicity of the electron band. The
Autor:
K. B. Tolpygo
Publikováno v:
Journal of Structural Chemistry. 27:998-1003
Sharp peaks deep in the intrinsic absorption band of variable-valence semiconductors can be interpreted as the result of the formation of metastable excitons of the Frenkel type, i.e., excitations of separate sigma bonds between nearest-neighbor atom
Autor:
V. M. Shatalov, K. B. Tolpygo
Publikováno v:
physica status solidi (b). 72:K43-K47