A method for removing sulfur-containing species from a liquid hydrocarbon fuel and capturing a portion of vaporized sulfur-free fuel to be processed into hydrogen for use in a fuel cell engine. A negative supply voltage begins at first potential and decreases to the first negative regulation voltage level. The processor may further be configured to generate a respective container within a hierarchy of one or more containers based at least in part on the hashed identifier and store the content item in one of the one or more containers based at least in part on the hashed identifier. The rotatable grate includes at least one upwardly projecting finger or disturbing formation to disturb the ash bed formed in use above and around the grate. Each individual label includes an attachment end with active adhesive and a freeunattached end with inactive adhesive. A task defined within a project plan of a software system under development is selected, and the task specifies a development tool and a user.