Composite yarns with elastane have become more and more used to take advantage of the filament properties. Indeed, the elastane filament improves the yarn's elasticity. However, the elastane ratio is an important factor influencing the yarn's strength. Thus, we study the effect of elastane ratio on the mechanical properties of cotton covered elastane-core spun yarns with the same twist factor and various elastane ratios. This study indicates that the elastane ratio is an important factor influencing the tenacity and elongation at break of yarns.
In Tunisia, traumatic brain injury due to RTAs is a frequent cause of ICU admission, especially among young adults, and is associated with high mortality and morbidity rates. The majority of the victims were motorcycle riders and/or passengers and pedestrians. The factors associated with a poor outcome were: age > 38 years, Glasgow Coma Scale score < 8, subdural hematoma, and development of secondary systemic insults (respiratory, circulatory, and metabolic). As a consequence, prevention is highly warranted.
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