Abstract: Systems and methods that integrate fluid-based powder conveyance for cleaning articles, including lumens and medical devices are presented. For example, a method of cleaning an article comprises a step of flowing a first fluid comprising a cleaning agent to a chamber. Flowing the first fluid comprising the cleaning agent to the chamber creates a pressure differential across a filter fluidly coupled to the chamber. When a pressure differential reaches a threshold, indicating that the cleaning agent has been accurately metered, flow of the first fluid comprising the cleaning agent is stopped. Next, flowing a second fluid through the chamber conveys the cleaning agent to an article, e.g., through a lumen of a medical or culinary device, thereby cleaning the article.

Abstract: A building system that includes a modular panel with side members, at least one of the side members having an associated coupling for hooked connection with a corresponding shaped fixture of an adjacent structure, the coupling and fixture being adapted to be held together by a locking device that, when engaged, acts to lock the structure and the side member together and, when disengaged, allows for play between the panel and structure in order to free the panel from the structure.

Abstract: A building system that includes a modular panel with side members, at least one of the side members having an associated coupling for hooked connection with a corresponding shaped fixture of an adjacent structure, the coupling and fixture being adapted to be held together by a locking device that, when engaged, acts to lock the structure and the side member together and, when disengaged, allows for play between the panel and structure in order to free the panel from the structure.