A procedure mask is used for performing patient procedures, or when patients are in isolation to protect them from potential contaminants. They are used for 'respiratory etiquette' to prevent people from spreading germs via talking, coughing, or sneezing.
Rolling-wave planning is the process of project planning in waves as the project proceeds and later details become clearer; similar to the techniques used in agile software development approaches like Scrum.. Work to be done in the near term is based on high-level assumptions; also, high-level milestones are set.
For example, if a plan has a run-out period that ends on March 31 of the following plan year, the amount rolled over for a plan year is equal to the amount from that plan year remaining in the participantâs health FSA after March 31 (up to the rollover amount elected by the employer, but no more than $500).