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1.
I A Bochkov N A Semina A Kh Ka?tmazov A I Tse?tlina V I Minaev I G Timerin G S Barsukova S G Sargsian E E Donskikh 《Antibiotiki i khimioterapii͡a》1991,36(12):24-26
Formation of microflora in the large intestine of 5-day old infants was studied in one of the Moscow maternity homes. The up-to-date procedures for isolation and identification of aerobic and anaerobic organisms were used in the study and the findings were processed on a computer. In the newborns of the maternity home of the "mother-infant" type there was observed colonization of the large intestine with aerobic and anaerobic organisms. A wave-like dynamics in the formation of the symbiotic microflora was revealed. It reflected the phenomenon of the microbial succession in the infants. The attempts to detect microbial interference between the species colonizing the large intestine showed that it was extremely rare in the 5-day old infants. This was likely the reason of the low intestine resistance to the colonization in the newborns which in its turn defined the frequent colonization of the intestine mucosa with S. aureus and the organisms of the Klebsiella, Enterobacter and Citrobacter group. 相似文献
2.
Bulanin V. V. Gusakov E. Z. Gusev V. K. Zadvitskiy G. Lechte C. Heuraux S. Minaev V. B. Petrov A. V. Petrov Yu. V. Sakharov N. V. Teplova N. Yashin A. Yu. 《Plasma Physics Reports》2020,46(5):490-495
Plasma Physics Reports - It is recognized that the filaments have a significant effect on the anomalous energy and particle transport in the tokamak periphery. They are actively investigated using... 相似文献
3.
Gleb V. Baryshnikov Boris F. Minaev Michael Pittelkow Christian B. Nielsen Roberto Salcedo 《Journal of molecular modeling》2013,19(2):847-850
Recently synthesized π-extended symmetrical tetraoxa[8]circulenes that exhibit electroluminescent properties were calculated at the density functional theory (DFT) level using the quantum theory of atoms in molecules (QTAIM) approach to electron density distribution analysis. Nucleus-independent chemical shift (NICS) indices were used to characterize the aromaticity of the studied molecules. The tetraoxa[8]circulene molecules were found to consist of two antiaromatic perimeters (according to the Hückel “4n” antiaromaticity rule) that include 8 and 24 π-electrons. Conversely, NICS calculations demonstrated the existence of a common π-extended system (distributed like a flat ribbon) in the studied tetraoxa[8]circulene molecules. Thus, these symmetrical tetraoxa[8]circulene molecules provide examples of diatropic systems characterized by the presence of induced diatropic ring currents. Figure
Special aromaticity of the tetraoxa[8]circulenes 相似文献
4.
The electric dipole transitions between pure spin and mixed spin electronic states are calculated at the XMC-QDPT2 and MCSCF levels of theory, respectively, for different intermolecular distances of the C6H6 and O2 collisional complex. The magnetic dipole transition moment between the mixed-spin ground (“triplet”) and the first excited (“singlet”) states is calculated by quadratic response at MCSCF level of theory. The obtained results confirm the theory of intensity borrowing and increasing the intensity of electronic transitions in the C6H6?+?O2 collision. The calculation of magnetically induced current density is performed for benzene molecule being in contact with O2 at the distances from 3.5 to 4.5 Å. The calculation shows that the aromaticity of benzene is rising due to the conjugation of π-MOs of both molecules. The C6H6?+?O2 complex becomes nonaromatic at the short distances (r?<?3.5 Å). The computation of static polarizability in the excited electronic states of the C6H6?+?O2 collisional complex at various distances supports the theory of red solvatochromic shift of the a?→?X band. 相似文献
5.
Minaev BF 《Ukrainski? biokhimicheski? zhurnal》2002,74(3):11-19
Electronic mechanisms of reductive activation of O2 by oxidases coenzymes (K) are considered. Activation is induced by triplet-singlet (T-S)-transitions at the charge-transfer stage and K+...O2- radical pair (RP) formation. For flavoproteins the spin reversion is induced by spin-orbit coupling (SOC) in superoxide ion, for metal-oxidases--by exchange interaction with paramagnetic metal ion. Another type of spin activation is connected with the singlet peroxide ion O(2)2- formation in cytochromes (structures of the type Fe(3+)-O- -O-Cu2+). 相似文献
6.
The development of a high-voltage discharge above the water surface is considered. The peculiarity of the observed type of
discharge is explained by the process of water evaporation. 相似文献
7.
K. S. Volodin I. M. Minaev A. A. Rukhadze K. Z. Rukhadze K. F. Sergeichev 《Plasma Physics Reports》2009,35(1):50-53
The possibility of controlling the directional pattern of a multislot waveguide antenna with the help of a gas-discharge tube placed inside the waveguide was studied experimentally. Since the dielectric parameters of the waveguide depend on the plasma density in the discharge column, they can be controlled by varying the discharge current. The high efficiency of such plasma control was demonstrated experimentally: as the discharge current was varied from 0 to 200 mA, the antenna directional pattern turned by ~17°. 相似文献
8.
9.
A. D. Melnik N. N. Bakharev V. K. Gusev P. R. Goncharov G. S. Kurskiev V. B. Minaev Yu. V. Petrov N. V. Sakharov A. Yu. Telnova S. Yu. Tolstyakov F. V. Chernyshev P. B. Shchegolev 《Plasma Physics Reports》2017,43(8):805-817
Specific features of the energy distributions of fast ions during neutral beam injection at the Globus-М tokamak are considered. Different loss mechanisms that can lead to the formation of a specific shape of the energy spectrum of superthermal ions are analyzed. The effect of sawtooth oscillations on the loss of fast ions is discussed. 相似文献
10.