Výsledky vyhledávání - "Igor Nekrasov"

Vibroseis acquisition with fully controllable sweep signals based on borehole VSP data analysis

Autor: Ilya Korotkov, Alexander Zhukov, Igor Nekrasov

This paper presents a method that allows designing a seismic signal with any signature with particular frequency and phase characteristics and then emits it into the geological environment as a sweep using a seismic vibrator equipped with the improve

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::108dfdd3b2bdd713dddb8ac240b6f9d8
https://doi.org/10.22541/essoar.167252711.17141218/v1

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Microwave Electromagnetic and Absorbing Properties of Iron/Polymer Nanocomposites

Autor: Nokolay Knyazev, Aleksey Bagazeev, Igor Nekrasov, Igor Beketov, Alexandr Malkin, Anna Khismatullina

Publikováno v: 2019 Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology (USBEREIT).

Here we present microwave electromagnetic and absorbing properties of epoxy resin nanocomposites filled with Fe nanoparticles. Average diameter of nanoparticles obtained by electric explosion of iron wire is about 100 nm. Frequency dependent S-parame

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::161d4c161fdaf917b93d7b688b3815a6
https://doi.org/10.1109/usbereit.2019.8736664

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Simultaneous pseudo-random shuffle-sweep generation and increased seismic data acquisition productivity

Autor: Tagir Galikeev, Igor Nekrasov, A.P. Zhukov, Ilya Korotkov, Evgeny Sidenko, Pavel Gridin

Publikováno v: SEG Technical Program Expanded Abstracts 2017.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7158e7274e2a5cabbe620f8f9e54c007
https://doi.org/10.1190/segam2017-17643246.1

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Real-time Adaptive Broadband Land Seismic Acquisition

Autor: A.P. Zhukov, Ilya Korotkov, Igor Nekrasov, Tagir Galikeev, E. Sidenko

Publikováno v: 78th EAGE Conference and Exhibition 2016.

Newly developed vibrator electronic control system opens up full potential of Vibroseis as a source. The GDS-II System allows for real-time broadband sweep calculation and generation. Generated sweep signals can be flexibly adjusted both in high and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a43f4eeda6019eef65c42e7fd6a7488d
https://doi.org/10.3997/2214-4609.201600977

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Application of the Adaptive Vibroseis for Spectral Broadening during Acquisition

Autor: Igor Nekrasov, A.P. Zhukov, A. Tischenko

Publikováno v: Proceedings.

In this work we present principles and results of the vibroseis technology, which is based on complex non-linear frequency modulated signals.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::25135166d92a2ff082205ab22909ef35
https://doi.org/10.3997/2214-4609.20140386

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10.1007/s11449-008-3008-3

Autor: Alexey Lukoyanov, Igor Nekrasov

Publikováno v: CrossRef Listing of Deleted DOIs.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e6008b0c532b1f0af52c179b44d8b905
https://doi.org/10.1007/s11449-008-3008-3

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Interplay of electron-phonon interaction and strong correlations: DMFT+\Sigma study

Autor: Michael Sadovskii, Igor Nekrasov, Eduard Kuchinskii

We perform investigation of Hubbard model with interaction between strongly correlated conducting electrons on a lattice with Debye phonons. To solve the problem generalized dynamical mean-field DMFT+\Sigma method is employed with "external" self-ene

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc2c93b4728d5258c234215feaee4973
http://arxiv.org/abs/0906.3865

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Photoelectron Spectroscopy of LiV2O4with Photons from 8.4 to 8100 eV: Bulk Sensitivity, Hybridization, and Recoil Effects

Autor: Akira Sekiyama, Kenji Tamasaku, Masato Kimura, Keita Murakami, Igor Nekrasov, J. Yamaguchi, Yasutaka Nakatsu, Hidenori Takagi, Atsushi Higashiya, Makina Yabashi, Hidenori Fujiwara, Seiji Niitaka, Tetsuya Ishikawa, Shigemasa Suga

Publikováno v: Journal of the Physical Society of Japan. 79:044711

Hard- and soft-X-ray photoelectron spectroscopies (HAXPES and SXPES) are very powerful for studying the bulk electronic structures of strongly correlated electron systems. The presence of an intrinsic surface layer on clean fractured surfaces is demo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::362125af03cb5a5d95c93936786df74c
https://doi.org/10.1143/jpsj.79.044711

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Influence of rare-earth ion radii on the low-spin to intermediate-spin state transition in lanthanide cobaltite perovskites: LaCoO3 versus HoCoO3

Autor: Igor Nekrasov, Streltsov, S. V., Korotin, M. A., Anisimov, V. I.

Publikováno v: Scopus-Elsevier
Phys. Rev. B Condens. Matter Mater. Phys.
Physical Review B-Condensed Matter and Materials Physics

We present first-principles (local-density approximation) LDA+U calculations of electronic structure and magnetic state for LaCoO3 and HoCoO3. Low-spin to intermediate-spin state transition was found in our calculations using experimental crystallogr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::01ee46e6680bc3f867d9a3e4e2476839
http://www.scopus.com/inward/record.url?eid=2-s2.0-0442279231&partnerID=MN8TOARS

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