Zobrazeno 1 - 10
of 143
pro vyhledávání: '"A. S. Ershov"'
Autor:
M. S. Ershov, E. S. Efimov
Publikováno v:
Горные науки и технологии, Vol 9, Iss 3, Pp 292-303 (2024)
The use of a variable frequency drive (VFD) for sucker-rod pump units (SRPUs), widely employed in oil extraction, enhances the energy and technological efficiency of oil production and reduces equipment wear. However, its application is hindered by u
Externí odkaz:
https://doaj.org/article/1d93c5b05f7442f681979ef684315a62
Autor:
Karen A. Egiazaryan, Gaik K. Parsadanyan, Dmitry S. Ershov, Mariya A. Skvortsova, Andrey P. Ratiev, Aleksei V. Afanasiev
Publikováno v:
Travmatologiâ i Ortopediâ Rossii, Vol 29, Iss 4, Pp 69-77 (2023)
Background. Rhizarthrosis is most commonly observed in individuals whose work and activities involve heavy use of the wrist. Conservative treatment methods are effective in the early stages of the disease, but in advanced stages, surgical interventio
Externí odkaz:
https://doaj.org/article/75f5de4186ca4777803db2b8fb00f31b
Autor:
Karen A. Egiazaryan, Dmitry S. Ershov
Publikováno v:
Travmatologiâ i Ortopediâ Rossii, Vol 29, Iss 4, Pp 156-159 (2023)
Georgii S. Bom was the founder of the Department of Traumatology, Orthopedics and Military Surgery of Pirogov Russian National Research Medical University. In 2023 the Department celebrated its 90th anniversary. Prof. S. Bom was also one of the found
Externí odkaz:
https://doaj.org/article/bbdd9d74fad441118731ee5c192778fd
Autor:
Aleksander V. Klimov, Baurzhan K. Ospanbekov, Akop V. Antonyan, Viktor R. Anisimov, Egor A. Dvoeglazov, Danila A. Novogorodov, Andrey V. Keller, Sergey S. Shadrin, Daria A. Makarova, Vladimir S. Ershov, Yury M. Furletov
Publikováno v:
World Electric Vehicle Journal, Vol 15, Iss 8, p 340 (2024)
The wheels of decelerating vehicles in braking mode roll with increased slip, up to complete lock-up, which is a negative phenomenon. This is effectively managed by the anti-lock braking system (ABS). However, in the course of braking, especially bef
Externí odkaz:
https://doaj.org/article/72a8538fdbd44ff7b1594e4fdde7edb5
Publikováno v:
Записки Горного института, Vol 261, Pp 339-348 (2023)
A modified mathematical model of an asynchronous electric drive of the rotor – a drill string – a bit – a rock is considered and implemented, which develops and generalizes the results of previously performed studies. The model includes the fol
Externí odkaz:
https://doaj.org/article/50ac2e1c413a49a0ad53fe7fcdf1141d
Publikováno v:
Экономика региона, Vol 20, Iss 1 (2024)
Роль внешнеэкономических связей для экономики России в досанкционный период имела очевидную тенденцию к усилению — при увеличении ВВП
Externí odkaz:
https://doaj.org/article/a27c094e27df414c961436c37d02f6a9
Publikováno v:
Біологія тварин, Vol 24, Iss 4, Pp 8-11 (2022)
The influence of temperature conditions on the level of damage of rabbit erythrocytes under posthypertonic shock and the level of their protection by amphiphilic compounds was investigated. We observed the maximum cell damage at 0°C. When the temper
Externí odkaz:
https://doaj.org/article/3586d53cdf4a4eeb826437eef9a81d34
Autor:
Sergey V. Valiulin, Andrei A. Onischuk, Alexandra P. Pyryaeva, Sergey V. An’kov, Anatoly M. Baklanov, Nikolay N. Shkil, Ekaterina V. Nefedova, Kirill S. Ershov, Tatyana G. Tolstikova, Galina G. Dultseva
Publikováno v:
Antibiotics, Vol 12, Iss 10, p 1534 (2023)
The aerosol inhalation delivery of composite particles consisting of Ag nanoparticles enveloped by polyvinylpyrrolidone was investigated in experiments with mice. An ultrasonic nebulizing system was created for the generation of aerosols with a mean
Externí odkaz:
https://doaj.org/article/f7f22af3ff6f4222b7ab8e14c893c7ab
Publikováno v:
Известия Томского политехнического университета: Инжиниринг георесурсов, Vol 333, Iss 2, Pp 53-61 (2022)
The relevance of the study is determined by the fact that the thermal operating modes of asynchronous motors largely determine their reliability. Currently, the issues of calculating the steady-state thermal modes of engines are well developed. The i
Externí odkaz:
https://doaj.org/article/9bb19df705654a1fae9ed3da5977522d
Autor:
Ivan S. Ershov, Kirill A. Esikov, Olga M. Nesterova, Mariya A. Skryl’nikova, Andrey V. Khramchikhin, Nadezda T. Shmaneva, Ivan S. Chernov, Ekaterina N. Chernova, Aleksandra M. Puzyk, Eugene V. Sivtsov, Yuliya N. Pavlyukova, Rostislav E. Trifonov, Vladimir A. Ostrovskii
Publikováno v:
Molbank, Vol 2023, Iss 1, p M1598 (2023)
3-(5-Phenyl-2H-tetrazol-2-yl)pyridine was synthesized by treating 5-phenyl-1H-tetrazole with pyridin-3-ylboronic acid under Chan–Evans–Lam coupling conditions. The structure and identity were confirmed by 1H, 13C-NMR spectroscopy, IR spectroscopy
Externí odkaz:
https://doaj.org/article/0daa7f1d69ca48bdb6418d65c60a8357