Search results for: V. V. Zvereva

Items from 1 to 19 out of 19 results

article

Crystal Structures of [Dy(dpm)₃]₂ and Dy(dpm)₃, Luminescent and X-Ray Fluorescent Study of Lanthanide(III) Tris-Dipivaloylmethanates

Huang Shen, A. S. Berezin, O. V. Antonova, V. V. Zvereva, more

Journal of Structural Chemistry > 2018 > 59 > 3 > 676-683

Crystal structures of [Dy(dpm)₃]₂ (1) at 155(2) K (space group P2₁/n, a = 12.2191(3) Å, b = 27.6044(6) Å, с = 21.8615(5) Å, β = 105.172(1)°, V = 7116.9(3) Å³, Z = 4) and Dy(dpm)₃ (2) at 200(2) K (space group Pmn2₁, a = 17.8741(7) Å, b = 10.5639(4) Å, с = 9.8336(4) Å, V = 1856.78(13) Å³, Z = 2) are determined. The structure of complex 1 is similar to the previously known dimeric packings [Ln(dpm)₃]...

article

Microstructure of multilayer heterosystems containing molecules of Ge quantum dots in Si on the stages of nucleation and growth as revealed by EXAFS spectroscopy

S. B. Erenburg, S. V. Trubina, V. V. Zvereva, V. A. Zinov’ev, more

Journal of Structural Chemistry > 2016 > 57 > 7 > 1407-1416

GeK edge EXAFS (Extended X-Ray Absorption Fine Structure) spectra have been measured for multilayer semiconducting heterosystems containing interacted groups of quantum dots (“molecules from quantum dots”) ordered in rings on different stages of their growth depending on topologic parameters and growth conditions. In accordance with our results obtained previously for the quantum dots of SiGe, for...

article

X-ray fluorescent analysis using synchrotron radiation: Subjects of research

V. A. Trunova, V. V. Zvereva

Journal of Structural Chemistry > 2016 > 57 > 7 > 1327-1333

The brief review has been presented about the application of X-ray fluorescent analysis using synchrotron radiation (storage ring VEPP-3, BINP SB RAS) for determination of elemental composition of the samples of different nature–biological and geological samples, objects of environment, archeological objects, and new materials. The feature of the presented research is the employment of the unique...

article

Recombination of Correlations between Bioelements in the Liver and Lungs during Modeling of Diet-Induced Obesity

B. V. Churin, V. A. Trunova, A. V. Sidorina, V. V. Zvereva, more

Bulletin of Experimental Biology and Medicine > 2016 > 160 > 3 > 308-312

In rats with obesity induced by high fat ration, the concentrations of K, Ca, Mn, Fe, Cu, Zn, Se, Br, Rb, and Sr were measured in the liver and lungs using synchrotron X-ray fluorescence analysis. Recombinations of inter-element correlations in the liver and lungs of rats receiving or not receiving additional Zn were observed under fasting conditions and after eating lard. Sr and Ca made the most...

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Tracing recent glacial events in bottom sediments of a glacial lake (East Sayan Ridge, Russia) from high‐resolution SR‐XRF, ICP‐MS, and FTIR records

V. A. Trunova, O. G. Stepanova, V. V. Zvereva, A. V. Sidorina, more

X‐Ray Spectrometry > 44 > 4 > 255 - 262

The paper presents a study of bottom sediments of proglacial Lake Ehoy, which intakes the meltwater of Peretolchin glacier, the East Sayan Ridge. A bottom sediment sequence that formed in the period of 1885–2013 was investigated with a year/season time resolution using X‐ray fluorescence with synchrotron radiation and conventional analysis. A depth‐age model of the core was based on counting of the...

article

Investigating bottom sediments from proglacial Lake Ehoy (Eastern Sayan Ridge) by means of SR-XRF

O. G. Stepanova, V. A. Trunova, A. V. Sidorina, V. V. Zvereva, more

Bulletin of the Russian Academy of Sciences: Physics > 2015 > 79 > 1 > 118-121

Results from studying the bottom sediments of proglacial Lake Ehoy, deposited by meltwaters of the Peretolchin Glacier in the Eastern Sayan Ridge, are presented. The bottom sediments formed between 1885 and 2013 are investigated with a time resolution of years and seasons by means of X-ray fluorescence with synchrotron radiation in the scanning and traditional modes (SR-XRF scanning, SR-XRF), infrared...

article

Investigating archaeological material from burials of the aristocracy of the Xiongnu people (Noin-Ula, Mongolia) by means of SRXRF, XAFS, and micro-SRXRF

V. A. Trunova, V. V. Zvereva, N. V. Polosmak, D. I. Kochubey, more

Bulletin of the Russian Academy of Sciences: Physics > 2015 > 79 > 1 > 109-117

A study of unique archaeological organic material from the burials of the aristocracy of the Xiongnu people (Noin-Ula, Nothern Mongolia) is performed by means of X-ray fluorescent analysis with synchrotron radiation (SRXRF), micro-SRXRF, X-ray absorption (XAFS), scanning electron microscopy, and high-resolution X-ray computed tomography.

article

Effect of Zinc on the Content of Chemical Elements in the Lung Tissue during Obesity in the Experiment

B. V. Churin, V. A. Trunova, A. V. Sidorina, V. V. Zvereva, more

Bulletin of Experimental Biology and Medicine > 2015 > 158 > 4 > 425-430

We found no deviations from normalcy in the content of chemical elements (K, Ca, Mn, Fe, Cu, Zn, Se, Br, Rb, and Sr) in the lungs of rats with mild alimentary obesity, but revealed redistribution of correlations between the elements indicating impaired metabolism in this organ. Zinc supplementation had no effect on the body weight and content of chemical elements (including zinc) in the lung tissue...

article

Reconstruction of glacier fluctuations in the East Sayan, Baikalsky and Kodar Ridges (East Siberia, Russia) during the last 210 years based on high-resolution geochemical proxies from proglacial lake bottom sediments

O. G. Stepanova, V. A. Trunova, V. V. Zvereva, M. S. Melgunov, more

Environmental Earth Sciences > 2015 > 74 > 3 > 2029-2040

We have presented results of study of bottom sediments of the proglacial lakes enriched with meltwater of Peretolchin Glacier (the East Sayan Ridge), Chersky Glacier (the Baikalsky Ridge) and glaciers of the Kodar Ridge. Bottom sediments formed from the end of the Little Ice Age to 2013 were investigated with time resolution in year-season, using X-ray fluorescence with synchrotron radiation and inductively...

article

Impact of glacier changes on ecosystem of proglacial lakes in high mountain regions of East Siberia (Russia)

S. S. Vorobyeva, V. A. Trunova, O. G. Stepanova, V. V. Zvereva, more

Environmental Earth Sciences > 2015 > 74 > 3 > 2055-2063

Mountain lakes in East Siberia have been studied for recent changes in water chemistry, turbidity and diatom assemblages preserved in bottom sediments. We performed a regional analysis of the relative effect of climate and glacier changes on change in diatom diversity and supply of meltware in proglacial lakes. We analysed sediment records from East Siberian glacier lakes using geochemical and diatoms...

article

A 850-year record climate and vegetation changes in East Siberia (Russia), inferred from geochemical and biological proxies of lake sediments

A. P. Fedotov, V. A. Trunova, I. V. Enushchenko, S. S. Vorobyeva, more

Environmental Earth Sciences > 2015 > 73 > 11 > 7297-7314

East Siberia is very sensitive to moisture regimes because it is located in a margin area, where moisture from the North Atlantic is strongly depleted, and the penetration of the East Asian monsoon is weak and rare. In winter months, the Siberian anticyclone strongly blocks and reduces the external influences on the region. The high latitude of the study area at 52°N is probably sensitive to variation...

article

Biodistribution of Rhenium Cluster Complex K₄[Re₆S₈(CN)₆] in the Body of Laboratory Rats

K. A. Brylev, M. A. Shestopalov, O. P. Khripko, V. A. Trunova, more

Bulletin of Experimental Biology and Medicine > 2013 > 155 > 6 > 741-744

We studied the biodistribution of luminescent octahedral rhenium cluster complex K₄[Re₆S₈(CN)₆], a promising agent for photodynamic therapy. It was shown that rhenium complex [Re₆S₈(CN)₆]₄- is mainly accumulated in the liver, the central organ of metabolism, and can be excreted by the kidneys. The cluster complex was also accumulated in the spleen in significant amount, which makes it a promising...

article

Effects of Zinc on the Content of Chemical Elements in the Liver of Rats during Early Stages of Obesity

B. V. Churin, V. A. Trunova, A. V. Sidorina, V. V. Zvereva, more

Bulletin of Experimental Biology and Medicine > 2013 > 156 > 2 > 196-200

In rats with slight alimentary obesity, the content of chemical elements in the liver did not differ from normal, but the correlations between these elements were changed, which attested to metabolic disorders. Additional zinc dose administered to rats receiving lipid-rich rations did not affect animal body weights and content of chemical elements (including zinc) in the liver, but corrected correlations...

article

Inter‐elemental correlations in liver and lung tissue of rats with alimentary adiposity (SRXRF)

V. A. Trunova, V. V. Zvereva, B. V. Churin

X‐Ray Spectrometry > 41 > 2 > 55 - 63

The distribution of adiposity steadily grows all over the world. The reasons of the adiposity increase, especially in the developed countries, are not well understood. In particular, the role of lungs in the development of adiposity is not clear. There are many enzymes in the lungs (as well as in the liver), providing the metabolic processes on a high level. Additionally, lung is the first organ which...

article

Micronutrients and Macronutrients in the Liver in Experimental Alimentary Obesity

B. V. Churin, V. A. Trunova, V. V. Zvereva, A. V. Sidorina, more

Bulletin of Experimental Biology and Medicine > 2012 > 154 > 2 > 206-209

Strong and very strong positive correlations differing from those in the control were found between chemical elements in the liver of rats with experimental alimentary obesity under conditions of physiological hunger and soon after fatty food intake. These findings attest to sustained metabolism disturbances in obesity and formation of a pathological system. Considering the appearance of strong and...

article

Macro–micro elementary content of liver and lungs in rats with alimentary adiposity (SRXRF)

V. A. Trunova, V. V. Zvereva, B. V. Churin, V. V. Astashov, more

X‐Ray Spectrometry > 39 > 1 > 57 - 62

In alimentary adiposity, some microelements take active part in the metabolism change that proves to be true by an essential deviation from the norm of their concentration in liver and lung tissues during the physiological hunger and soon after fat consumption. The concentrations (in µg/g) of the following chemical elements P, S, Cl, K, Ca, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Br, Rb, and Sr were determined...

article

Anatomical variants of transposition of the main vessels and their relationship with the content of chemical elements in heart ventricles

E. E. Kliver, G. N. Okuneva, E. N. Levicheva, L. M. Nepomnyashchikh, more

Bulletin of Experimental Biology and Medicine > 2008 > 145 > 5 > 638-641

Cardiometrical characteristics of anatomical variants of the main vessels transposition are determined by different functional load of heart compartments and are associated with metabolic processes of different intensity, which is confirmed by the content of chemical elements in the right-and left-ventricular myocardium. It was shown that the content of chemicals was virtually the same in both cardiac...

article

XRFA-SR studies of the distribution of macro and microelements in myocardium and vessel samples from cardiosurgery patients

V. A. Trunova, V. V. Zvereva

Journal of Structural Chemistry > 2008 > 49 > 1 > 211-216

Studies of the disbalance of chemical elements in myocardium of patients with an ischemic heart disease and aortic aneurysm are very important in order to reveal the predictors of irreversible changes in damaged tissues. X-Ray fluorescence analysis using synchrotron radiation (XRFA-SR) allows us to perform direct nondestructive many-element analysis of samples with a small mass. Samples of this kind...

article

Photography of an Object for Synthesizing a Composite Hologram

V. V. Zvereva

Journal of Applied Spectroscopy > 2001 > 68 > 3 > 529-533

The quality of the image recorded on a synthesized hologram with different arrangements of the cameras forming the original images is analyzed. Optimum parameters of the positioning of cameras for forming images recorded on subholograms in order to construct composite holograms with minimum distortions have been obtained.

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