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Accelerated aging effects on carbon fiber PEKK composites manufactured by hot compression molding
(2016-10-01)
The accelerated aging effects on mechanical properties of carbon fiber-reinforced polyetherketoneketone (PEKK) thermoplastic composites are reported. Ultraviolet (UV) radiation and moisture absorption may induce property ...
Alfven waves as a driving mechanism in stellar winds
(ELSEVIER SCI LTD, 2010)
Alfven waves have been invoked as an important mechanism of particle acceleration in stellar winds of cool stars. After their identification in the solar wind they started to be studied in winds of stars located in different ...
Resin composite characterizations following a simplified protocol of accelerated aging as a function of the expiration date
(Elsevier B.V., 2014-07-01)
This study evaluated the mechanical, thermal, and morphological characteristics of different classifications of dental composites as a function of the material condition (new, aged and expired). Specimens were obtained ...
Particle acceleration in the superwinds of starburst galaxies
(EDP Sciences, 2018-08)
Context. Starbursts are galaxies undergoing massive episodes of star formation. The combined effect of stellar winds from hot stars and supernova explosions creates a high-temperature cavity in the nuclear region of these ...
A magnetic reconnection model for explaining the multi-wavelength emission of the microquasars Cyg X-1 and Cyg X-3
(Oxford University Press, 2015-02)
Recent studies have indicated that cosmic ray acceleration by a first-order Fermi process in magnetic reconnection current sheets can be efficient enough in the surrounds of compact sources. In this work, we discuss this ...
Effect of accelerated carbonation on cementitious roofing tiles reinforced with lignocellulosic fibre
(ELSEVIER SCI LTD, 2010)
The present work evaluated the effects of accelerated carbonation on mechanical and physical characteristics of cementitious roofing tiles reinforced with vegetable fibre. The maximum load and toughness of the tiles have ...
Evaluation of accelerated carbonation curing in cement-bonded balsa particleboard
(Springer, 2018-04-01)
This study aimed to assess the potential usage of balsa wood to produce cement-bonded particleboards as well as to study the effects of accelerated carbonation on the cement-bonded balsa particleboard. Particleboards were ...
Wolf-Rayet optically thick winds with Alfven waves
(ELSEVIER SCI LTD, 2010)
The Wolf-Rayet (WR) stars are hot luminous objects which are suffering an extreme mass loss via a continuous stellar wind. The high values of mass loss rates and high terminal velocities of the WR stellar winds constitute ...