Radiol Bras. 2016 Nov/Dez;49(6):406–413 408 http://dx.doi.org/10.1590/0100-3984.2015.0190 There is a broad spectrum of diagnoses of bilateral lesions in the basal ganglia in the pediatric population. The main causes cited are hypoxic-ischemic encephalopathy; hypoglycemia; encephalitis; inborn errors of metabolism; water and electrolyte disturbances; carbon monoxide poisoning; and demyelinating ...

Ethylene-norbornene copolymers were synthesized with a homogeneous catalyst system based on bis(imino) pyridine iron with the addition of diethyl zinc (DEZ) as alkyd transfer agent to promote immortal copolymerization. The addition of DEZ did not influence the catalytic activity in copolymerization with 7.5 mmol of norbornene (NB), but in the reactions with 70 mmol, the comonomer promoted an in...