Zobrazeno 1 - 10
of 303
pro vyhledávání: '"Malkin Alexander"'
Publikováno v:
St. Petersburg Polytechnical University Journal: Physics and Mathematics, Vol 16, Iss 4 (2023)
This study presents the results of a complex physical modeling of a moderate power gyrotron operating at the 4-mm wavelength range. The characteristics of electrodes and magnetic coils in a four-stage recovery collector were optimized taking into acc
Externí odkaz:
https://doaj.org/article/03984e2cc7f748949050cabf75e44bdc
Publikováno v:
St. Petersburg Polytechnical University Journal: Physics and Mathematics, Vol 15, Iss 3 (2022)
In the paper, a 3D trajectory analysis taking into account the surface roughness of the thermionic cathode and thermal effects caused by its heating has been performed in the electron-optical system of a gyrotron with a frequency of 74,2 GHz and an o
Externí odkaz:
https://doaj.org/article/3e86e3d7da3d41b48e61e3ddae4ef7db
Publikováno v:
Applied Rheology, Vol 28, Iss 1 (2018)
The hydration kinetics of four CEM I 52.5 N cements in the presence of two different superplasticizers was studied. The kinetics was characterized by monitoring the evolution of the dynamic modulus at constant frequency on a rotational rheometer. The
Externí odkaz:
https://doaj.org/article/c1292e49999f45b2a5f53f2a252d6647
Publikováno v:
Applied Rheology, Vol 25, Iss 5, Pp 9-19 (2015)
Different rheological methods for yield stress estimation of cement pastes during initial hydration were used and results were compared. These methods include measuring of the hysteresis loop, flow curves (recalculated to the same time of hydration)
Externí odkaz:
https://doaj.org/article/174b5c23d8f745b4a6d722b5bb17f63e
Publikováno v:
Applied Rheology, Vol 25, Iss 3, Pp 40-53 (2015)
Measuring the rheological properties of multi-component (and multi-phase) systems meets with many special problems which are absent in flows of homogeneous materials. Such complex fluids have inherent structure and all the peculiarities of their beha
Externí odkaz:
https://doaj.org/article/6545a38f4b634bba9b2154e32febe11b
Publikováno v:
Applied Rheology, Vol 24, Iss 1, Pp 9-18 (2014)
Mechanical properties of various technological materials at large deformations are proposed to characterize by means of some generalized parameters obtained at large oscillation strains but not related to any definite rheological equations. The base
Externí odkaz:
https://doaj.org/article/2b6ceef5cbf6428ab73dc42508a3fc28
Publikováno v:
In Current Opinion in Colloid & Interface Science October 2024 73
Autor:
Masalova Irina, Malkin Alexander Ya.
Publikováno v:
Applied Rheology, Vol 17, Iss 4, Pp 42250-1-42250-9 (2007)
The concentration and size dependencies of elastic properties of highly concentrated w/o emulsions were studied. The range of weight concentration of the disperse phase was 90 - 96%, the range of the average droplet size was 16 - 20 mm, and the dropl
Externí odkaz:
https://doaj.org/article/b003d6a6a35741b4aa79e1a8224ee282