Zobrazeno 1 - 10
of 1 191
pro vyhledávání: '"Velocity factor"'
Publikováno v:
Polyolefins Journal, Vol 8, Iss 1, Pp 41-48 (2021)
Polyolefins have been widely used in the electrical insulation and cable industry in recent years. One of the main usages of these materials is dielectric insulation in coaxial cables. Low attenuation and high signal transmission speed are among the
Externí odkaz:
https://doaj.org/article/62f0ecb45ccf4a339140fa7ce62cb12c
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Publikováno v:
World Journal of Engineering, 2018, Vol. 15, Issue 4, pp. 478-488.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/WJE-06-2017-0134
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Publikováno v:
Journal de Mathématiques Pures et Appliquées. 158:183-215
We build up a decomposition for the flow generated by the heat equation with a real analytic memory kernel. It consists of three components: The first one is of parabolic nature; the second one gathers the hyperbolic component of the dynamics, with n
Autor:
Pâmela da Silva Ferreira, Thiago de Paula Protásio, F. Ramalho, Thiago Campos Monteiro, A. M. Couto, Paulo Ricardo Gherardi Hein
Publikováno v:
Wood Material Science & Engineering. 18:151-160
Publikováno v:
Industrial laboratory. Diagnostics of materials. 87:23-28
Creeping ultrasonic waves are used in echo flaw detection of near-surface and near-bottom zones of metal products of plane-parallel or cylindrical shape. The creeping (lateral) waves are also used in testing products by the time-of-flight diffraction
Publikováno v:
Ukrainian Metrological Journal. :25-29
The principles of operation and design of immersion ultrasonic transducers developed by the authors for excitation and reception of elastic vibrations in moving filament-like and plane-parallel materials, in particular, polymer fibbers and films, wit
Autor:
William Berger, Cynthia Furse
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 28:1028-1033
Spread spectrum time domain reflectometry (SSTDR) is used to test dielectric aging of a cable type used in the nuclear power plant industry. A 16 AWG twisted pair shielded cable is thermally aged to the equivalence of 50 years in service, and SSTDR d
Autor:
H. Hamidou, M. Sh. Israilov
Publikováno v:
Mechanics of Solids. 56:376-391
An exact analytical solution to the problem of dynamic expansion of a spherical cavity in an elastic medium (soil) with an arbitrary constant speed is obtained. It is assumed that this speed can be large, up to the velocity of propagation of bulk wav