Thinking at plant architecture as emerging from a simple set of construction rules is a very appealing feature of L-Systems. In the context of crop modeling, it opens new ways to model the effects of environmental stresses on crop architecture, by pointing to regulation loops that are ignored in usual models (Fournier et al., 2007). As such, the triggering of leaf development by emergence event...

Fournier's gangrene is a usually polymicrobial, necrotizing, life-threatening fasciitis of the perineal, genital and perianal region. It is a fulminant disease which can rapidly spread to the abdominal wall and cause a high mortality. It is important to diagnose the disease process as early as possible as when the tyreatment is delayed mortality rate is directly increased.

introduction: fournier's gangrene or necrotizing fasciitis of external genitalia is a medical emergency. it was reported in cases of acute promyelocytic leukemia (apl) before and during induction therapy with all- trans retinoic acid (atra).we present a case of apl that developed fournier's gangrene   during atra therapy.