Abstract: Methods and systems for generating electricity from a fuel are generally described. In some embodiments, a first container is used to house a fluid that is capable of reacting to form a fuel, and a second container is used to house a reactant capable of reacting with the fluid to form the fuel. In some embodiments, valves are used to control the flow of fluid between the first container and the second container. In some embodiments, the valve(s) can be configured such that fluid is only transported between the first container and the second container when the pressure within the second container is below a threshold level.

Abstract: An emergency alert system that facilitates communication with groups and/or individuals (e.g., residents, tenants, inmates, passengers, students, teachers, employees, public officials, service members, hospitality guests, patients, and event spectators) in a pre-definable area such as a geographic area, a contained structure, and a geo-fence area via each individual's mobile communication device while in communication with a communication network, the system including a non-transitory, machine-readable medium storing information that includes machine-readable, processor-executable instructions and a data processor that executes the instructions stored in the non-transitory, machine-readable medium. In some implementations, the data processor is adapted to account for each individual within the pre-definable area during a period of time, identify any individual not within the pre-definable area during the period of time, and aggregate and compile individual location and accountability data.

Abstract: An emergency alert system that facilitates communication with groups and/or individuals (e.g., residents, tenants, inmates, passengers, students, teachers, employees, public officials, service members, hospitality guests, patients, and event spectators) in a pre-definable area such as a geographic area, a contained structure, and a geo-fence area via each individual's mobile communication device while in communication with a communication network, the system including a non-transitory, machine-readable medium storing information that includes machine-readable, processor-executable instructions and a data processor that executes the instructions stored in the non-transitory, machine-readable medium. In some implementations, the data processor is adapted to account for each individual within the pre-definable area during a period of time, identify any individual not within the pre-definable area during the period of time, and aggregate and compile individual location and accountability data.