Abstract Objective To critically appraise the evidence for and against premonitory symptoms in migraine being due to hypothalamic dysfunction.Discussion Some premonitory symptoms (e.g.fatigue, mood changes, yawning, and food craving) are associated with the physiologic effects of neurotransmitters such as orexins, neuropeptide Y, and dopamine; all
Colliders use final focus systems to reduce the transverse beam sizes at the interaction point in order to increase collision event rates.The maximum focal strength (gradient) of the quadrupoles, lolasalinas.com and the maximum beam size in them, together limit the beam size reduction that is possible.The goal of a final focus system design is to f
Helicopter blades are currently constructed with composite materials enveloping honeycomb cores with only the leading and trailing edges made of metal lolasalinas.com alloys.In some cases, the erosive wear of the bound between the composite skin and metallic leading edge leads to full blade failure.It is therefore the goal of this paper to provide