springs are the  mechanical parts which have many application in industries. static and dynamic forces cause relaxation in these parts so that they lose some of their free length and reaction force. springs constant are very important in airplane and vailway industry since constant and variable forces are applied to them in period time, therefore it is necessary to avoid decreasing in spring co...

after springs production, different residual stresses are created in the inner and outer surfaces of spring wires. some of these stresses for example compressive residual stresses are useful and some are harmful. the effects of vareation of these stresses are caused spring relaxation and decrising in their free length when they are loaded intermittently. for review this phenomena in this resear...

We report on the first direct measurement of the change of the surface stress in the reconstruction of the Au(111) and the Au(100) surfaces. For both surfaces the reconstruction relaxes the intrinsic tensile stress, by 22% and 5%, respectively. A discussion of the data on the Au(111) surface in the FrenkelKontorova model shows that the energy gain due to the surface stress is not quite large en...

stress is a physiological reaction to the ever-increasing demands of life. after each stressful event, the body should be returned to a normal relaxed state. however, continuous stress of modern life sometimes put the subjects at risk of developing a range of diseases; from psychosomatic to anxiety disorders. stress management program gives a range of tools to reduce the impact of stress and pr...

People have different ways of coping with stress, and some turn to cigarettes. It sounds as though you already know that smoking may not be the best way for you to deal with stress. However, as you also pointed out, quitting may continue to be a challenge. Keep in mind though, quitting doesn?t necessarily mean a one-time event; it may be a gradual process that involves a lot of commitment throu...

People have different ways of coping with stress, and some turn to cigarettes. It sounds as though you already know that smoking may not be the best way for you to deal with stress. However, as you also pointed out, quitting may continue to be a challenge. Keep in mind though, quitting doesn?t necessarily mean a one-time event; it may be a gradual process that involves a lot of commitment throu...