Zobrazeno 1 - 10
of 290
pro vyhledávání: '"V. P. Mamaev"'
Publikováno v:
RUDN Journal of Engineering Research, Vol 18, Iss 3, Pp 299-307 (2017)
The paper presents the results of designing a turbine profile type A3K7 NACA using CAD, which realizes the method of nonlinear transformation. Girst transformation was used by the authors. All calculations and graphical representations were made in t
Externí odkaz:
https://doaj.org/article/bf7cc8b04b654bb19880ec1d52bf834c
Publikováno v:
RUDN Journal of Engineering Research, Vol 0, Iss 3, Pp 21-25 (2013)
The questions on how to reduce noise centrifugal compressors and pipelines piping at compressor stations.
Externí odkaz:
https://doaj.org/article/65549e4243654f8c963c9323fd64a77f
Publikováno v:
RUDN Journal of Engineering Research, Vol 0, Iss 2, Pp 57-67 (2012)
Theoretical and experimental studies of tonal noise centrifugal blowers for variousgeometric parameters of elements of the flow path. Recommendations on the choice of optimal parameter values.
Externí odkaz:
https://doaj.org/article/c2b6251c83a947b4b6d4cb1e57ef78cd
Publikováno v:
RUDN Journal of Engineering Research, Vol 0, Iss 4, Pp 41-51 (2011)
In clause (article) the basic directions of perfection of soaking up and exhaust pathes gas pumping over units at compressor stations are considered. Results of experimental researches are analyzed; the appropriate conclusions and recommendations are
Externí odkaz:
https://doaj.org/article/a0590825c7014248b480c9df5fa845a6
Autor:
V K Mamaev, E N Vlasov
Publikováno v:
RUDN Journal of Engineering Research, Vol 0, Iss 2, Pp 106-113 (2009)
The analysis of dependences of an estimation of a level of the sound power, offered by various authors, with reference to two inlet radial fans and to one-stage radial compressors with blade's diffuser is given. The new formula for an estimation of a
Externí odkaz:
https://doaj.org/article/94e4c85ee239406497748400fa3995d2
Autor:
A. I. Martynov, O. D. Ostorumova, T. S. Pustovitova, V. I. Mamaev, S. Y. Gedgafova, N. E. Sharkova, T. E. Rybkina
Publikováno v:
Российский кардиологический журнал, Vol 0, Iss 5, Pp 26-27 (2001)
Systolic blood pressure as one of the factors decreasing aorta tensility in elderly patients with essential hypertension.
Externí odkaz:
https://doaj.org/article/0e1c79332566483dbedf7c0fea439e51
Publikováno v:
Chemistry of Heterocyclic Compounds. 29:432-436
5-Amino-2,5′bipyrimidines and bis-(5-aminopyrimidinyl-2)-p-phenylenes have been synthesized as well as isomeric bis-(p-aminophenyl)pyrimidines. From these, substituted benzylidenamino derivatives have been prepared and their liquid crystalline prop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee60c39611ea25954ba5984b64f67f05
https://doi.org/10.1007/bf00529883
https://doi.org/10.1007/bf00529883
Publikováno v:
Chemistry of Heterocyclic Compounds. 29:181-185
Substituted 5-arylazopyrimidines and 2-arylazopyrimidines have been synthesized and investigated as dichroic dyes with positive dichroism, for liquid crystals. A promising series of 2-aryl-5-arylazopyrimidine dyes has been found, and a method is prop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::339e048d06c5f1673d1be05fdd2edd94
https://doi.org/10.1007/bf00531662
https://doi.org/10.1007/bf00531662
Publikováno v:
Chemistry of Heterocyclic Compounds. 29:174-177
Carbon magnetic resonance spectra are reported for isomeric acetyldiazines, and an analysis is made of the changes in chemical shifts of the acetyl-group and ring carbon atoms due to the aza-effect in the isomers. In the α-acetylazine series, specia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::005ad02833f07decb8087f10dd4bb8bd
https://doi.org/10.1007/bf00531660
https://doi.org/10.1007/bf00531660
Publikováno v:
ChemInform. 22
Reaction of 5-substituted-2-methylpyrimidines with the Vilsmeyer complex followed by condensation of the resulting immonium salts and acroleins with aromatic amidines has given liquid crystalline 2′,5-bipyrimidines.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc567eb8efd4a4142aace13bc227e88d
https://doi.org/10.1002/chin.199113187
https://doi.org/10.1002/chin.199113187