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61.
62.
I T Andrusenko I K Aleksandrova N I Givental' E A Ved'mina V I Ermolov 《Antibiotiki》1982,27(1):32-37
Antibiotic sensitivity and other biological properties of Aeromonas and NAD-vibrios isolated from water of open waterbodies were studied comparatively. It was found that the organisms of these genera had a definite similarity with respect to antibiotic sensitivity, morphological, cultural and some antigenic properties. The differences in the antibiotic sensitivity of these organisms were not sufficient for definition of the taxonomic features. 相似文献
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Triapitsyna GA Andreev SS Osipov DI Stukalov PM Ivanov IA Aleksandrova ON Kostiuchenko AV Priakhin EA Akleev AV 《Radiatsionnaia biologiia, radioecologiia / Rossi?skaia akademiia nauk》2012,52(2):207-214
Evaluation of the radionuclide content in the ecosystem components (water, sediments, aquatic organisms) of industrial reservoirs-storages of liquid radioactive waste of the "Mayak" PA (reservoirs R-4, R-10, R-11, R-17, R-9) and the estimation of the absorbed dose rate in aquatic organisms of these reservoirs using the software package ERICA Assessment Tool 1.0 May 2009 have been performed. Gradient of the absorbed dose rate for the detected taxonomic groups of hydrobionts in the series of the studied reservoirs R-11 --> R-10 --> R-4 --> R-17 --> R-9 was almost equal to one order of magnitude. The estimated absorbed dose rate for phytoplankton ranged from 5.4 x 10(0) mGy/day (R-11) to 4.0 x 10(4) mGy/day (R-9), for zooplankton--from 6.4 x 10(-1) mGy/day (R-11) to 3.8 x 10(3) mGy/day (R-9), for zoobenthos (chironomids)--from 5.6 x 10(0) mGy/day (R-11) to 1.1 x 10(3) mGy/day (R-17), for fish (roach)--from 8.0 x 10(-1) mGy/day (R-11) to 1.9 x 10(1) mGy/day (R-4). 相似文献
67.
Aleksandrova NP 《Uspekhi fiziologicheskikh nauk》2006,37(3):11-24
This article reviews experimental studies of pharyngeal muscles with emphasis on m. genioglossus as a major muscle dilating pharynx and discusses neuromuscular mechanisms that maintains patency of upper airway. Mechanisms of inspiratory activation of genioglossus muscle in comparative with diaphragm are also discussed. Experimental data suggesting that upper airway muscles have a significant role in compensation of added inspiratory load are presented. It allows to regard pharyngeal dilating muscles as accessory muscles of respiration. Activation of m. genioglossus (together with others muscles dilating the pharynx) decreases airway resistance and thereby facilitates the load compensation function of "pumping" muscles. Similar to diaphragm involvement of the pharynx dilating muscles in the load compensatory response is resulted from a complex integration of several influences originating from mechano- and chemoreceptors. 相似文献
68.
K. K. Sidorova V. K. Shumnyi M. N. Glyanenko E. Yu. Vlasova T. M. Mischenko I. A. Aleksandrova 《Russian Journal of Genetics》2009,45(7):794-798
Phenogenetic studies of four symbiotic hypernodulating mutants of pea (Pisum sativum L.) induced from seeds of cultivar Rodno by chemical mutagen EMS were conducted. All mutants have improved symbiotic traits, i.e., an increased number of root nitrogen fixating nodules and high activity of nitrogenase. Symbiotic traits were shown to be inherited dominantly. Mutants grown in the field or in a greenhouse showed superiority over the original cultivar in productivity. An important feature of hypernodulating mutants was found that is responsible for the appearance of high-height productive plants in F2 after crossing mutants and the original cultivar. Constant lines retaining the ability for high-level production up to the F5 generation were created based on individual plants. 相似文献
69.
Pryakhin E. A. Bogdanov G. O. Tryapitsyna G. A. Deryabina L. V. Stukalov P. M. Aleksandrova O. A. Akleev A. V. 《Biophysics》2010,55(6):1094-1101
The ecotoxicological properties of sediments from reservoir R-11 of the Techa River cascade are studied in comparison to the
Shershni reservoir. Radiochemical analysis of sediment and water samples from R-11 show that the radioactivity of the sediments
ranges from 240 to 360 kBq/dm3 dry weight for 90Sr and from 10 to 161 kBq/dm3 dry weight for 137Cs. The absorbed doses for Oligochaeta from R-11 are calculated on the basis of radiochemical data. The hydrobiological studies
include (1) study of the population density and diversity of Oligochaeta species in the reservoirs and (2) laboratory bioassay
of sediments with Tubifex tubifex as a biomonitor species. The results indicate that the Oligochaeta population density in R-11 is less than in the Shershni
reservoir. No significant effects of the absorbed dose rate on population density, survival rate, or fertility are found in
a laboratory Tubificidae bioassay of R-11 sediments. However, a decrease in fertility is noted in experiments at a higher
absorbed dose. 相似文献
70.
Increased Level of β-Amyloid in the Brain of Bulbectomized Mice 总被引:1,自引:0,他引:1
Aleksandrova IY Kuvichkin VV Kashparov IA Medvinskaya NI Nesterova IV Lunin SM Samokhin AN Bobkova NV 《Biochemistry. Biokhimii?a》2004,69(2):176-180
Six weeks after bilateral olfactory bulbectomy, a peptide with molecular weight of 4 kD was revealed in extracts of the neocortex and hippocampus from mice. Using monoclonal antibodies 4G8, this peptide was identified as beta-amyloid. Its level was significantly higher in the bulbectomized animals than in sham-operated mice. The bulbectomized mice displayed sharp impairment in spatial memory when tested in the Morris water maze. The results suggest that bulbectomy initiates in the brain a pathological process similar to human Alzheimer's disease in location, biochemistry, and behavioral manifestations. 相似文献