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1.
V I Kocherga N V Nesterenko Z D Vorobets L K Kurchenko M D Kurski? 《Ukrainski? biokhimicheski? zhurnal》1987,59(1):61-66
The effect of membrane potential on the passive 45Ca2+ uptake by cardial sarcolemmal vesicles was investigated. Membrane potentials were generated by the K+ gradient in the presence of valinomycin and were measured using fluorescent dye diS-C3-(5). It was shown that the 45Ca2+ influx into vesicles increased twice after membrane depolarization. Evaluation of the 45Ca2+ influx over a wide range of membrane potentials produced a profile similar to that of current-voltage relationships for single calcium channels in isolated cardiomyocytes. Passive 45Ca2+ transport was inhibited by 1 mM Cd2+ and Co2+. It is suggested that the voltage-dependent Ca2+ influx into vesicles occurs through Ca2+-channels. 相似文献
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V. A. Nesterenko E. Yu. Loktionova O. A. Burkovsky 《Contemporary Problems of Ecology》2016,9(3):282-289
The complete cycle of the structure transformation of shrew model taxocene in southern Sakhalin was revealed by investigations of 2008–2014. It was shown that in the communities of these animals facultative and obligate dominants are absent and a dominant group is formed every year of common species. There are two main patterns of the taxocene structure: the monodominant type, predominating by the long-clawed shrew at low number of other species, and the polydominant type, in which one of the background species plays a role of codominant at a lower number of long-clawed shrews. It is found out that the dominance structure in shrew taxocene is not closely related to the phase of its quantitative dynamics. 相似文献
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V S Zueva O A Dmitrenko E A Krupina N G Belikov L N Nesterenko 《Zhurnal mikrobiologii, epidemiologii, i immunobiologii》1990,(10):11-15
The resistance of methicillin-resistant staphylococci to phage 85 is due to the presence of a certain system restriction modification in microbial cells. The loss of the capacity for restricting phage DNA by the cell as the consequence of the loss of the mec determinant is not accompanied by the loss of its capacity for modifying phage DNA. 相似文献
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Figures of merit are introduced for estimation of achievable resolution of surface plasmon (SP) sensors by modulation type. The resolution of SP sensors in the Kretschmann’s geometry is estimated by numerical simulation for combinations of silver (Ag), copper (Cu), aluminum (Al), chromium, and titanium layers with a gold (Au) layer in the ultraviolet (UV), visible, and infrared (IR) regions in cases of detecting the change of the refractive index of water and the presence of an adsorption layer in water. SP biosensors with angular modulation based on Al exhibit low resolution in the UV region; Ag, Au, and Cu biosensors show best resolution in the visible region. Biosensors with intensity modulation demonstrate high performance in the near IR by Ag, Au, and Cu metals, and in the UV by Al. 相似文献
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The features of transformation of the structure of two model shrew taxocenes in Sakhalin have been discussed, and the general parameters in the dominance hierarchy have been revealed. It has been established that the long-clawed shrew is the basic element that maintains the taxocene symmetry on the southern part of Sakhalin, while on the northern part of the island, this role is played by Laxmann’s shrew. However, the quantitative dynamics of different taxocenes is subject to similar patterns and integrally varies on the basis of the synchronization of fluctuation of the abundance of all species. It is shown that the leading position of the organizing species within the framework of the two structural schemes revealed (the mono- and bidominant schemes) is annually determined according to the phases of the population dynamics of common species. 相似文献
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Nefedova VV Korenberg EI Nesterenko LN Gintsburg AL Kovalevskiĭ IuV Gorelova NB 《Parazitologiia》2001,35(1):3-8
Indication of Borrelia (B. burgdorferi sensu lato) in 205 adult unfed I. persulcatus ticks from a natural focus was carried out simultaneously by methods of PCR and dark-field microscopy of vital preparations. PCR method revealed Borrelia prevalence in considerable number of ticks, in which Borrelia were not found by microscopy of 250 microscopic fields in a preparation from each individual tick. At the same time, PCR method didn't give positive results for approximately 8% of ticks, which contained rather high concentration of Borrelia (more than 10 per 100 microscopic fields). In general, PCR method doesn't have advantages in comparison with a microscopy of vital preparations for study the Borrelia prevalence in ticks. 相似文献
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Nesterenko VS Iatsenko EM Savina NP Khakaiu IL 《Radiatsionnaia biologiia, radioecologiia / Rossi?skaia akademiia nauk》2004,44(5):560-562
In experiments with Wistar rats exposed to 7.5 Gy, polycationic sorbent ICHANT with gel structure and pores of various size exhibited stronger antitoxic properties as compared to carbon sorbents. 相似文献
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