Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Aleksandr A. Nikolaev"'
Autor:
Ivan I. Kirilenko, Ekaterina A. Kosareva, Aleksandr A. Nikolaev, Artemii M. Zenkin, Iana M. Selezneva, Nikolay A. Nikolaev
Publikováno v:
Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki, Vol 22, Iss 2, Pp 385-391 (2022)
The paper presents a study of options for detecting a failure or defect in the propeller of an unmanned aircraft system (quadcopter) using machine learning methods. An original accuracy evaluation of the known algorithms using in practice the data ob
Externí odkaz:
https://doaj.org/article/0dfa19667daf4b92a5f98c9d3440448b
Publikováno v:
Designs, Vol 7, Iss 3, p 62 (2023)
The authors propose a technique for reactive power compensation using a powerful regenerative controlled-speed synchronous motor drive (SMD) based on a three-level (3L) neutral point clamped (NPC) active front-end rectifier (AFE) and a voltage source
Externí odkaz:
https://doaj.org/article/f7cb37c764b04b7fa516ca753a6c30ee
Publikováno v:
CASPIANJOURNALOF MEDICINE AND PHARMACY. 4:52-57
Under the influence of natural gas containing hydrogen sulfate, it has been found that the level of malondialdehyde was increased in testicular tissue in experimental animals as well as in ejaculate in men employed in gas and oil industry. It has bee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e78f9501b467c4016ce68cf36420f4e
https://doi.org/10.29039/2712-8164-2023-1-52-57
https://doi.org/10.29039/2712-8164-2023-1-52-57
Publikováno v:
ASTRAKHAN MEDICAL JOURNAL. :66-71
The paper presents the results of a study of iron metabolism in full-term infants conceived naturally and using in vitro fertilization (IVF) technology. The data obtained allowed us to conclude that there were no statistically significant differences
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1616af58424c9bc75660ba6e97345767
https://doi.org/10.29039/1992-6499-2023-1-66-71
https://doi.org/10.29039/1992-6499-2023-1-66-71
Autor:
Aleksandr E. Nikolaev, Viktor A. Gombolevskiy, Anna P. Gonchar, Arsen N. Shapiev, Albina Sh. Laypan, Sergey P. Morozov
Publikováno v:
Туберкулез и болезни лёгких, Vol 96, Iss 11, Pp 60-67 (2018)
In Moscow in 2017, the project named Moscow Screening for Lung Cancer was started using low-dose computed tomography (LDCT) for selective screening for lung malignant tumors in the out-patient facilities and polyclinics.The main goal of the project:
Externí odkaz:
https://doaj.org/article/daff5147206d43e4a6dbe94ed7e4c2d6
Autor:
Aleksandr V. Nikolaev, Nikolaj I. Alymenko, Mikhail Chekhlar, Yurai Janocko, Daniil N. Alymenko, Viktor A. Nikolaev
Publikováno v:
Perm Journal of Petroleum and Mining Engineering, Vol 16, Iss 4, Pp 370-377 (2017)
The paper describes the possible failures in the automation ventilation system with partial return use of upcast air from a shaft or mine (during recirculation). Existing ventilation systems use recirculation in the main ventilation mining, through w
Externí odkaz:
https://doaj.org/article/a95cefe351134973ac21ded13c6a434b
Autor:
Aleksandr V. Nikolaev, Nikolay I. Alymenko, Anton A. Kamenskikh, Shtefan K. Fet, Viktor A. Nikolaev
Publikováno v:
Perm Journal of Petroleum and Mining Engineering, Vol 16, Iss 3, Pp 291-300 (2017)
Existing mine air heaters (MAH) that heat the air supplied into downcast shafts during the cold period are equipped with a heat channel. A part of the air from a MAH goes through a heat channel. Another part is sucked through a pit head by general de
Externí odkaz:
https://doaj.org/article/e0e9339caa2748d59df88099aaec7a14
Publikováno v:
Russian Journal of Dentistry. 25:435-443
BACKGROUND: Increasing the efficiency of the restoration of the contact surfaces of the posterior teeth by considering age-related characteristics in performing direct aesthetic restoration with composite materials remains an urgent task of modern de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d10606b2d50ab6f52605343225ccf14
https://doi.org/10.17816/1728-2802-2021-25-5-435-443
https://doi.org/10.17816/1728-2802-2021-25-5-435-443
Autor:
Aleksandr V. Nikolaev
Publikováno v:
Perm Journal of Petroleum and Mining Engineering, Vol 15, Iss 20, Pp 293-300 (2016)
On the Yarega field (LUKOIL-Komi LLC) a thermal mining oil development is applied. With such method, there is a considerable heat release in oil mines’ working areas (in drilling galleries of the gradient excavations). Increasing temperature causes
Externí odkaz:
https://doaj.org/article/0b7de001056143e099e7637935519ca8
Publikováno v:
Perm Journal of Petroleum and Mining Engineering, Vol 15, Iss 18, Pp 91-98 (2016)
In the existing shaft air heaters that heat the air for air suppliers in the cold season heater channel is used. Part of the air from heater goes to the channel, another one is sucked through pithead by general shaft pressure drawdown formed by main
Externí odkaz:
https://doaj.org/article/d194ef2eed0f43dcb89293446bc39082