Zobrazeno 1 - 10
of 236
pro vyhledávání: '"E. A. Alekseev"'
Publikováno v:
Radio Physics and Radio Astronomy, Vol 28, Iss 3, Pp 257-270 (2023)
Subject and Purpose. Results are presented of the recent considerable upgrade implemented at the Kharkiv microwave spectrometer. The upgrade has been aimed at extending the operating frequency range and increasing the utmost accessible spectral resol
Externí odkaz:
https://doaj.org/article/ab822345ddbb48b8a65bb6c98c4d35cc
Publikováno v:
Radio Physics and Radio Astronomy, Vol 27, Iss 4, Pp 299-311 (2022)
Subject and Purpose. The frequency modulation (FM)combined with lock-in detection, the technique which is used in microwave spectroscopy for enhancing the sensitivity of measurements, as well as the effects due to standing wavesinthe measuring absorp
Externí odkaz:
https://doaj.org/article/2428e1a946394e1fbe1d3fe351889184
Autor:
O. M. Ulyanov, V. V. Zakharenko, E. A. Alekseev, O. M. Reznichenko, I. O. Kulahin, V. V. Budnikov, V. I. Prisiazhnii, A. V. Poikhalo, V. V. Voytyuk, V. N. Mamarev, V. V. Ozhinskyi, V. P. Vlasenko, V. M. Chmil, I. K. Sunduchkov, M. M. Berdar, V. I. Lebed, M. I. Palamar, A. V. Chaikovskii, Yu. V. Pasternak, M. A. Strembitskii, M. P. Natarov, S. O. Steshenko, V. V. Glamazdin, O. I. Shubnyi, A. O. Kyrylenko, D. Yu. Kulyk
Publikováno v:
Radio Physics and Radio Astronomy, Vol 25, Iss 3, Pp 175-192 (2020)
Purpose: High resolution investigation of spectral lines of space sources requires low intrinsic noise of the radio telescope receiving system. It is provided with both input cryogenic amplifiers and low phase noise of local oscillators. To make spec
Externí odkaz:
https://doaj.org/article/3127bd6b79a64d8d86100de181f643ac
Autor:
V.N. Derkach, E. A. Alekseev, R.V. Golovashchenko, Ye.M. Ostryzhnyi, A.A. Meshcheryakov, S.I. Tarapov
Publikováno v:
Радиофизика и электроника, Vol 25, Iss 3, Pp 42-53 (2020)
Subject and Purpose. The subject of the study is spectral and energy characteristics of whispering-gallery disk resonators made up of low-loss microwave dielectric and semiconductor materials, namely, gold-doped silicon Si:Au, Chemical Vapor Depositi
Externí odkaz:
https://doaj.org/article/e6f97dcedac34243aa51e34d92aa3420
Autor:
N. L. Pogrebnyak, S. F. Dyubko, E. A. Alekseev, M. P. Perepechai, A. I. Tkachev, S. A. Vlasenko
Publikováno v:
Radio Physics and Radio Astronomy, Vol 24, Iss 4, Pp 272-284 (2019)
Purpose: Zinc atom in the triplet Rydberg states is the investigation subject. Purposes of the work are the following: design of a laser-microwave spectrometer intended for measuring the transition energies between the Zn I atom triplet Rydberg state
Externí odkaz:
https://doaj.org/article/b50b09a2448c4a6dba0c780d71e8cb9e
Autor:
I. A. Armieieva, V. V. Ilyushin, E. A. Alekseev, O. A. Dorovskaya, L. Margulès, R. A. Motiyenko
Publikováno v:
Radio Physics and Radio Astronomy, Vol 21, Iss 1, Pp 37-47 (2016)
Purpose: spectrum investigation of the lowest three torsional states of acetone (CH3COCH3 ) within the frequency ranges 34–150 and 480–620 GHz. Design/methodology/approach: New measurements were carried out using the automated millimeter wave spe
Externí odkaz:
https://doaj.org/article/9efa49ef119b4fe7b77db3915deda3d1
Publikováno v:
Radio Physics and Radio Astronomy, Vol 19, Iss 4, Pp 364-374 (2014)
Results of improvement of the automated millimeter-wave spectrometer of the Institute of Radio Astronomy NAS–Ukraine aimed at reaching a sub-Doppler resolution on the basis of the Lamb-dip observation are presented. Some hardware solutions of the
Externí odkaz:
https://doaj.org/article/2191a8d3da4e4012b6cf3dbb5524f218
Autor:
E. Yu. Alekseev, T. D. Chermenskaya
Publikováno v:
Journal of Analytical Chemistry. 78:507-513
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f663c1efd12ce0515fb4ba4c321f25a5
https://doi.org/10.1134/s1061934823030024
https://doi.org/10.1134/s1061934823030024
Publikováno v:
South Russian Journal of Therapeutic Practice. 4:40-45
The article presents a review of the literature related to the problems of the gastrointestinal tract in gynecological practice.Complaints from the digestive organs are interrelated with vaginal dysbiosis, a violation of the formation of the menstrua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b9f91923bb96d57a3bf4a908009eaea
https://doi.org/10.21886/2712-8156-2023-4-1-40-45
https://doi.org/10.21886/2712-8156-2023-4-1-40-45
Autor:
E. Yu. Alekseev, V. I. Dolzhenko
Publikováno v:
Russian Agricultural Sciences. 48:S159-S163
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::051d209d0eac1c1bc380ab2d30d21311
https://doi.org/10.3103/s1068367422070023
https://doi.org/10.3103/s1068367422070023