Described herein are compositions and methods for the treatment of Parkinson’s disease andor to protect dopaminergic nigrostriatal neuronal cell bodies from 6-OHDA-induced neurotoxicity in a mammal. According to one embodiment, a memory manager is to perform a first lookup operation in a memory allocation table to identify an allocation entry based on a handle representing a memory address of a memory block allocated to a client and to retrieve a trace entry pointer from the allocation entry. To read the servo information, the readwrite head is configured to read, from a first track, a first servo signal including first servo bursts of a predetermined frequency, and read, from a second track adjacent to the first track, a second servo signal including second servo bursts of the predetermined frequency. Further, the user interfaces provide unique process of transitioning between the content. The fluids in the channels are segmented into two or more fluid segments by a segmenting section. In some embodiments, a second heater may be added to the system for production of potable water.