This paper is devoted to the hydroforming performances of toroidal pressure hulls with octagonal cross-sections, together buckling hydroformed hulls. The cross-sections preforms are inscribed from circular perfect shells a 150 mm major radius, 75 section and 1.058 wall thickness. nonlinear finite-element method was employed study under various pressures. To verify numerical findings, three nomi...

The Effect of Static Stretching and Order of Warm-Up on the Isokinetic Peak Torque of the Knee Extensors

This study examined lower extremity power performance, using the Margaria-Kalamen Power Test, after a dynamic warm-up with (resisted) and without (nonresisted) a weighted vest. Sixteen (n = 16) high school male football players, ages 14-18 years, participated in 2 randomly ordered testing sessions. One session involved performing the team's standard dynamic warm-up while wearing a vest weighted...

Research in the last 15 years has led to die-less incremental forming processes that are close to realization in an industrial setup. Whereas many studies have been carried out with the intention of investigating technical abilities and economic consequences, the ecological impact of incremental sheet forming (ISF) has not been studied so far. Using the concept of exergy analysis, two ISF techn...

IRDI – An Overview IRDI (Industrial Research + Development Institute) is located in Midland, Ontario, Canada. IRDI was founded in 1992 by two local business entrepreneurs as an industry-driven research institute. IRDI moved to its current location in 1995, and is still housed within this industrial-scale 55,000 square foot facility that was acquired by Georgian College of Applied Arts and Techn...

where the first inequality is an application of the triangle inequality, the second follows from (1) and (2), and the third from the choice of m. Therefore, since our choice of > 0 was arbitrary, we conclude that the subsequence (xnm)→ b. A similar argument using the sequence (zm) given by zm = inf{xm, xm+1, . . .} and the version of Lemma 1.3.7 suitable for infima (see Exercise 1.3.2, which yo...

The aim of this research was to study the effect of warm up with two different type intensity on plasma antioxidant enzymes and damage indices of lipid, protein and DNA after intensive activity in non-athlete males. 12 non athlete students of kharazmi University participated in this study. Firist, subjects VO2peak were measured by Gas analyzer (Meta Max 3B) on the ergometer cycle with increment...