This paper discusses the oscillations of a spring (slinky) under its own weight. A discrete model, describing slinky by $N$ springs and masses, is introduced compared to continuous treatment. One interesting result that upper part performs triangular oscillation whereas bottom an almost harmonic if starts with "natural" initial conditions, where just pulled further down from rest position gravi...

[H] Arachidonic acid is released after stimulation of suspended and attached neutrophils. The arachidonic acid release in attached cells is more than in suspended cells. This release is rapid with the increase of incubation time and dose depended. The Fmet-Leu-Phe (FMLP) potentiates [H] arachidonic acid release in attached cells pretreated with LPS and serum. [H] arachidonic acid release was le...