A behavior disorder originating in childhood in which the essential features are signs of developmentally inappropriate inattention, impulsivity, and hyperactivity. Although most individuals have symptoms of both inattention and hyperactivity-impulsivity, one or the other pattern may be predominant. The disorder is more frequent in males than females. Onset is in childhood. Symptoms often attenuate during late adolescence although a minority experience the full complement of symptoms into mid-adulthood. (From DSM-V)
Attention -- Juvenile literature : Six super skills for executive functioning : tools to help teens improve focus, stay organized, and reach their goals / Lara Honos-Webb, Neil D Brown
Attention -- Pictorial works -- Juvenile fiction. : I am really, really concentrating / characters created by Lauren Child ; [text based on the script written by Samantha Hill ; illustrations from the TV animation produced by Tiger Aspect]
Live vaccines prepared from microorganisms which have undergone physical adaptation (e.g., by radiation or temperature conditioning) or serial passage in laboratory animal hosts or infected tissue/cell cultures, in order to produce avirulent mutant strains capable of inducing protective immunity
Radio waves -- Attenuation. : Advancements in antenna measurement : a novel approach to high-frequency attenuation / Martin Krchňák, Marek Češkovič, Pavol Kurdel, Anton Panda