Fatigue life, morphological studies, and thermal aging properties of rattan powder-filled natural rubber (NR) composites were investigated as a function of filler loading and a silane coupling agent. NR composites were prepared by the incorporation of rattan powder in the range of 0 to 30 phr into a NR matrix with a laboratory size two roll mill. Thermal aging was carried out for 7 and 14 days ...

Abstract This study investigated the chemical–physical and volatile profile of sherry-like white wines with different aging time from three areas Sardinia. Proximate chemical composition, CIELab color coordinates absorbances at 280 420 nm were determined. Volatile compounds determined by solid-phase microextraction (SPME) followed gas chromatography coupled a mass spectrometer (GC/MS) using tar...

Multilayered polymer films with biomimicking, layered structures have unique microstructures and many potential applications. However, a major limitation of polymer films is the deterioration of mechanical properties in working environments. To facilitate the design and development of multilayered polymer films, the impact of thermal aging on the mechanical behavior of microand nano-layered pol...

An accurate and real-time knowledge of temperatures in insulated-gate bipolar transistor modules is crucial for reliability analysis thermal management power electronic converters. For this purpose, paper establishes an integrated equivalent circuit model comprising self-heating impedances cross-heating to provide a temperature profile the junction solder joints during various operations case a...

Electricity demand has surged over the last several years and will persist in future. Increased transmission loads cause lines to operate much closer their security limits, leading thermal mechanical stress thus affecting reliability aging. Accordingly, monitoring conductor temperature time is critical identifying power networks that may need extra attention perhaps maintenance. This paper pres...

aging coefficient (ac) or aged-child ratio or age composition; takes into account the numbers and areas at both ends of the age distribution simultaneously. ac is the total number of individuals aged 65 years and more, divided by the total number of individuals aged 14 years, multiplied by 100. herein, age composition in iranian popu1ations, according to different provinces, place of residence ...

original article   the objectives of this research were to study the correlations of heat strain score index (hssi) and values of wet-bulb globe temperature (wbgt) index with physiological parameters such as core body temperature, heart rate, and blood pressure of workers exposed to heat stress in a glass manufacturing plant in order to determine the reliability of hssi. this cross sectional st...