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Excitotoxins, such as kainic acid (KA), have been shown to produce both immediate and delayed neuronal degeneration in adult rat brain. While preweanling rats have been shown to be resistant to the immediate neurotoxicity of KA, the presence of delayed neuronal loss has not been investigated in such animals. To determine whether intracerebroventricular… (More)
BACKGROUND Intracerebroventricular (ICV) administration of kainic acid to rats produces limbic-cortical neuronal damage that has been compared to the neuropathology of schizophrenia. METHODS Groups of adult rats were administered ICV kainic acid and then assessed for neuronal loss and the expression of proteins relevant to mechanisms of neuronal damage… (More)
Flexible Manufacturing Systems (FMS) produce products with different specifications through the automactic program change of machines as well as changing equipments and tasks sequences used to process the parts. So, the FMS model must include all the possibilities of produced parts and tasks to be carried through. The use of High Level Petri Nets allows to… (More)
We introduce a time-varying automaton to model discrete event systems. The structure of this time-varying automaton is very similar structure to (max,+) automaton, but allowing variable event lifetimes. Based on this time-varying automaton the design of timed supervisors is obtained by using the dioid algebra, where the languages used to describe the… (More)
Primary leiomyosarcoma of the renal vein has not been previously reported in the urologic literature. A case report with long-term survival is described and the literature reviewed.
Excitotoxins, such as kainic acid (KA), have been shown to produce neuronal degeneration in the adult rat brain. While preweanling rats have been shown to be relatively resistant to the neurotoxicity of lower doses of KA, the presence of neuronal loss at higher doses (of KA) has only begun to be investigated in such animals. A reliable method of producing… (More)
An iliac fossa abscess is a clinical entity that has not been described in the urologic literature. Three patients presenting with urologic symptoms were evaluated and found to have iliac fossa abscesses. It is important for the urologist to be aware of the existence, diagnosis and treatment of this entity.
Egg pigmentation is proposed to serve numerous ecological, physiological, and adaptive functions in egg-laying animals. Despite the predominance and taxonomic diversity of egg layers, syntheses reviewing the putative functions and drivers of egg pigmentation have been relatively narrow in scope, centring almost exclusively on birds. Nonvertebrate and… (More)