In this study the Taguchi method, has been applied to optimize the heat treatment parameters for the corrosion resistance of AA6061 aluminum alloy. The experimental design consisted of four parameters (aging temperature, aging time, quenching environment and NaCl concentration), each containing three levels. Tafel polarization measurements were carried out to determine the corrosion resistance ...

Premature aging diseases or progerias are rare genetical disorders displaying symptoms of the aging body early in life or even in childhood. They are called segmental because they show some, but not all features of aging. There is the progeria of the adult, Werner syndrome and, more severe because limiting lifespan to the first or second decade, the progerias of the childhood, Cockayne syndrome...

Life expectancy has been increasing in the last few decades in the Western world and is accompanied by higher occurrence of age-related diseases like metabolic, cardiovascular, and renal diseases and also with a decline in immune functions. In HIV-infected people, due to the use of combination antiretroviral therapy (cART), life expectancy has increased. As a result, non-AIDS conditions which a...

BACKGROUND We evaluated the influence of chemical disinfection and accelerated aging on the dimensional stability and detail reproduction of a silicone elastomer containing one of two opacifiers. METHODS A total of 90 samples were fabricated from Silastic MDX 4-4210 silicone and divided into groups (n = 10) according to opacifier content (barium sulfate or titanium dioxide) and disinfectant s...

Background and Aim: Changing the color of resin luting cements could affect the aesthetic appearance of thin porcelain veneer. The aim of this in vitro study was to evaluate the effect of artificially accelerated aging on color stability of light-cured resin cement and flowable composite as a luting agent through the porcelain veneer. Materials and Methods: This experimental study was carried ...

Reliable accelerated simulation of asphalt aging is significant interest to researchers and pavement practitioners alike. However, current laboratory protocols are either based on binder rather than mixture or use dry ovens heat mixtures, omitting the important effects UV radiation. Binder cannot take into account interactions between aggregate phases during aging, while omission radiation igno...