proposed life
7.Structural modifications focus on increasing the minimum life of the wing main spar (originally set at 800 hours) have carried through several proposed progressive stages of modification with the intention of reducing fatigue problems and providing a life extension of up to 1,250 hours for a complete refurbishment with a newly manufactured main spar.
9.It was proposed by FDA that,the increase of survival rate and the improvement of quality of life must both be considered in cancer treatment. Based on the questionnaire desgned by European Organization for Research and Treatment of Cancer (EORTC), the author studied the quality of life in 102 cases of prostate cancer and in 102 controls.

