Descripción: “...In recent years, some research has directed towards the creation of an artificial pancreas that allows automatically the regulation of glucose levels in blood. However, one of the greatest difficulties in achieving this objective, is that not all internal variables of the mathematical model associated with the controller can be measured directly by physical sensors, either because there are no sensors for all variables, because existing sensors are not commercial, or because they are not viable from the economic point of view. ...”

Descripción: “...In recent years, some research has directed towards the creation of an artificial pancreas that allows automatically the regulation of glucose levels in blood. However, one of the greatest difficulties in achieving this objective, is that not all internal variables of the mathematical model associated with the controller can be measured directly by physical sensors, either because there are no sensors for all variables, because existing sensors are not commercial, or because they are not viable from the economic point of view. ...”

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Descripción: “...Blood parameters presented an initial increase followed by later reduc- tion; however, there were no significant difference regarding control. The study showed that pacu presented a tendency to homeostasis for maximum sampling time.Key words: blood, fish, glucose, haematology, ion, stress. ...”