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- 저자 : Zhukova, Natalia V. (검색결과 18 건)
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Zhukova, V.,Pakhlova, G.,Pakhlov, P.,Adachi, I.,Aihara, H.,Al Said, S.,Asner, D. M.,Aulchenko, V.,Aushev, T.,Ayad, R.,Babu, V.,Badhrees, I.,Behera, P.,Bhuyan, B.,Biswal, J.,Bobrov, A.,Bonvicini, G.,Bo American Physical Society 2018 Physical Review D Vol.97 No.1
<P>We report a new measurement of the exclusive e(+) e(-) -> D-(*()+/-)*D--/+ cross sections as a function of the center-of-mass energy from the D-(*D-)+/-*(-/+) threshold through root s = 6.0 GeV, using the initial-state radiation technique. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of 951 fb(-1). The accuracy of the cross section measurement is increased by a factor of 2 over the first Belle study. We perform the first angular analysis of the e(+) e(-) -> D*D-+/-*(-/+) process and decompose this exclusive cross section into three components corresponding to the D * helicities.</P>
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Zhukova, Valentina,Bondar, A.,Eidelman, S. EDP Sciences 2019 The European Physical Journal Conferences Vol.202 No.-
<P>We report new measurement of the exclusive <I>e</I><SUP>+</SUP><I>e</I><SUP>-</SUP> → <I>D</I><SUP>(*)±</SUP><I>D</I><SUP>*∓</SUP> cross sections as a function of center-of-mass energy from the <I>D</I><SUP>(∗)±</SUP><I>D</I><SUP>∗∓</SUP> threshold up to $ \sqrt s $ = 6.0 GeV with initial state radiation. The analysis is based on a data sample collected by the Belle detector with an integrated luminosity of 951 fb<SUP>−1</SUP>. The accuracy of the cross section measurement is increased by a factor of 2 in comparison with the first Belle study. We have performed the first angular analysis of the <I>e</I><SUP>+</SUP><I>e</I><SUP>-</SUP> → <I>D</I><SUP>∗±</SUP><I>D</I><SUP>∗∓</SUP> process and decomposed this exclusive cross section into three components corresponding to the different <I>D</I><SUP>∗</SUP> helicities.</P>
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Zhukova Natalia V. The Korean Society of Oceanography 2005 Ocean science journal Vol.40 No.3
Variation in the microbial biomass and community structure found in sediment of heavily polluted bays and the adjacent unpolluted areas were examined using phospholipid fatty acid analysis. Total microbial biomass and microbial community structure were responding to environmental determinants, sediment grain size, depth of sediment, and pollution due to petroleum hydrocarbons. The marker fatty acids of microeukaryotes and prokaryotes - aerobic, anaerobic, and sulfate-reducing bacteria - were detected in sediments of the areas studied. Analysis of the fatty acid profiles revealed wide variations in the community structure in sediments, depending on the extent of pollution, sediment depth, and sediment grain size. The abundance of specific bacterial fatty acids points to the dominance of prokaryotic organisms, whose composition differed among the stations. Fatty acid distributions in sediments suggest the high contribution of aerobic bacteria. Sediments of polluted sites were significantly enriched with anaerobic bacteria in comparison with clean areas. The contribution of this bacterial group increased with the depth of sediments. Anaerobic bacteria were predominantly present in muddy sediments, as evidenced from the fatty acid profiles. Relatively high concentrations of marker fatty acids of sulfate-reducing bacteria were associated with organic pollution in this site. Specific fatty acids of microeukaryotes were more abundant in surface sediments than in deeper sediment layers. Among the microeukaryotes, diatoms were an important component. Significant amounts of bacterial biomass, the predominance of bacterial biomarker fatty acids with abundance of anaerobic and sulfate-reducing bacteria are indicative of a prokaryotic consortium responsive to organic pollution.
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The Main Problems of Forming Soft Skills in the Future Career of a Student in a Pandemic
Zhukova, Oksana,Mandragelia, Volodymyr,Veselska, Liudmila,Yermolenko, Andrii,Dotsenko, Svitlana International Journal of Computer ScienceNetwork S 2022 International journal of computer science and netw Vol.22 No.3
The purpose of the article is to analyze students' self-assessment of the level of soft skills development and the prospects for its improvement in a pandemic. For an adequate and objective study of the stated issues, comparative analysis was most often used. For this purpose, theoretical studies of national and foreign experts were analyzed, which included specific sociological surveys. Prospects for further work are assumed in a detailed study of the factors, conditions and mechanisms for the formation and development of soft skills in students of natural, engineering and technological, medical, social and humanitarian specialties.
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Olga Zhukova,Sergey Dydykin,Eliska Kubíková,Natalia Markova,Yuriy Vasil’ev,Marina Kapitonova 대한성형외과학회 2022 Archives of Plastic Surgery Vol.49 No.3
Background In recent years thread lift has become widespread; however, existing methods need to improve their long-term outcome, which requires considering topographic anatomy of face and neck, especially the ligamentous apparatus. This study aims to assess the effectiveness and safety of an innovative method of one-time three-step thread facelift, which provides an additional support to the ligamentous structures of the upper, middle, and lower thirds of the face and neck. Methods The study included 357 patients aged 32 to 67 years with various morphotypes of aging. The original method of thread lift was applied, and its effectiveness was followed up for to 2 years. The Wrinkle Severity Rating Score (WSRS) and Global Aesthetic Improvement Scale (GAIS) scores were used for assessment by investigators, independent observers, and patients. Statistical significance was determined using paired t-test and chi-square test. Results The meanWSRS score was 3.880.88 before the thread lift, 1.930.81 one month after the procedure, and 2.360.85 after 2 years of follow-up. The mean GAIS was 4.800.04 one month after thread lift, and 4.010.04 after 2 years, while in the patients’ assessment Global Satisfaction Scale was 4.860.02 and 4.100.02, respectively. There were no clinically significant complications throughout the observation period. Conclusion The new method of one-time three-step thread fixation of the soft tissues of the face and neck demonstrated a high degree of satisfaction by both experts and patients after 2 years of follow-up. It showed high efficacy and safety, including in the group of patients with pronounced age-related changes of the skin of face and neck.
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GMR Effect in Co-Cu Microwires
V. Zhukova,J. J. del Val,M. Ilyn,M. Ipatov,R. Varga,C. Garcia,A. Zhukov 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.12
We studied magnetic properties and GMR effect of Cox − Cu100−x (10 ≤ x30 at%) microwires. We observed considerable magnetoresistance (MR), ΔR/R, in Co-Cu glass coated microwires withx = 10-30%. For low x content (x = 10), ΔR/R we observed negative MR, tending to saturate inhigh magnetic fields, H. On the other hand, for the samples x = 30 ΔR/R(H) dependences showednon-monotonic behavior, exhibiting R/R increase with H at low H-values (up to 5 kOe) and alsoconsiderable GMR effect. Temperature dependence of magnetization measured in samples cooled without magnetic field(zero field cooling, ZFC) and cooled under magnetic field (field cooled, FC) exhibit significantdifference for Cox Cu100−x (x = 30). For Cox Cu100−x (x = 10) microwires we observed a maximumat quite low temperature, indicating possibility of existence of some amount of small Co-grains. X-ray diffraction (XRD) results reveal that the structure of the metallic core is granular withtwo phases: the main one, fcc Cu (lattice parameter 3.61 °A), found in all samples and fcc -Co(lattice parameter 3.54 °A) which is present in microwires with higher Co content. In the case oflow Co content, XRD indicates that Co atoms are distributed within the Cu crystals. The quantityand the crystallite size of the formed phases strongly depend on the geometry of the microwire.
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Natalia V. Zhukova 한국해양과학기술원 2005 Ocean science journal Vol.40 No.3
in the microbial biomass and community structure found in sediment of heavily polluted bays and the adjacent unpolluted areas were examined using phospholipid fatty acid analysis. Total microbial biomass and microbial community structure were responding to environmental determinants, sediment grain size, depth of sediment, and pollution due to petroleum hydrocarbons. The marker fatty acids of microeukaryotes and prokaryotes-aerobic, anaerobic, and sulfate-reducing bacteria- were detected in sediments of the areas studied. Analysis of the fatty acid profiles revealed wide variations in the community structure in sediments, depending on the extent of pollution, sediment depth, and sediment grain size. The abundance of specific bacterial fatty acids points to the dominance of prokaryotic organisms, whose composition differed among the stations. Fatty acid distributions in sediments suggest the high contribution of aerobic bacteria. Sediments of polluted sites were significantly enriched with anaerobic bacteria in comparison with clean areas. The contribution of this bacterial group increased with the depth of sediments. Anaerobic bacteria were predominantly present in muddy sediments, as evidenced from the fatty acid profiles. Relatively high concentrations of marker fatty acids of sulfate-reducing bacteria were associated with organic pollution in this site. Specific fatty acids of microeukaryotes were more abundant in surface sediments than in deeper sediment layers. Among the microeukaryotes, diatoms were an important component. Significant amounts of bacterial biomass, the predominance of bacterial biomarker fatty acids with abundance of anaerobic and sulfate-reducing bacteria are indicative of a prokaryotic consortium responsive to organic pollution.
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Distribution and genetic diversity of Feline calicivirus in Moscow metropolitan area
Alina Komina,Nikita Krasnikov,Oksana Kucheruk,Elena Zhukova,Anton Yuzhakov,Alexey Gulyukin 대한수의학회 2022 Journal of Veterinary Science Vol.23 No.6
Background: Feline calicivirus (FCV) is widespread throughout the world. An FCV infection is associated with conjunctivitis, rhinitis, and mouth ulcers that can lead to the animal’s death. Because vaccination is not always effective, it is necessary to monitor the infection regularly. Objectives: This study examined the FCV epizootic situation in the Moscow metropolitan area by conducting a molecular phylogenetic analysis of the virus isolates. Methods: Samples from 6213 animals were examined by a reverse transcription polymerase chain reaction. For phylogenetic analysis, 12 nucleotide sequences obtained from animal samples were selected. Sequencing was performed using the Sanger method. Phylogenetic analysis was conducted using the Maximum Likelihood method. Results: The FCV genome was detected in 1,596 (25.7%) samples out of 6,213. In 2018, calicivirus was detected in 18.9% of samples, 27.8% in 2019, 21.4% in 2020, and 32.6% in 2021. Phylogenetic analysis of the F ORF2 region and the ORF3 start region led to division into two FCV genogroups. Most of the isolates (8 out of 12) were close to the Chinese strains. On the other hand, there were isolates closely related to European and American strains. The isolates circulating in Moscow were not included in clusters with vaccine strains; their nucleotide similarity varied from 77% to 83%. Conclusions: This study revealed a high prevalence and genetic diversity of the FCV in Moscow. The epizootic situation remains stably tense because 24 viruses were detected in 25% of animals annually.
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