Abstract: A mono-fin for swim training is disclosed. The mono-fin has two separated boot structures that from two separate foot cavities for holding feet with toes positioned in front regions of each of the boot structures and heels positioned at back regions of each of the boot structures. The mono-fin has a mono-fin structure connecting the boot structure through the front regions of each of the boot structures. In a middle region of the mono-fin structure and between the front regions of the boot structures, there is flex region. The flex region allows angles between the boot structures and distances between the back regions of the boot structures to be changed by a swimmer while swim training.

Abstract: Apparatus, systems and methods are disclosed for treating a biological fluid with light. A container for biological fluid is introduced into a fluid treatment chamber where it is contacted with light provided by one or more light sources in proximity to the fluid treatment chamber. A drawer for holding containers of biological fluid introduces the containers into the chamber. Containers for holding the biological fluid are marked by the apparatus to indicate the status of the treatment.

Abstract: In embodiments a beverage dispenser includes a beverage cabinet, a mechanically operable, gravity-fed piston valve that can be controllably opened and closed to dispense beverage in a generally downward direction, a valve actuator supported on the cabinet below the valve and coupled to the valve and a beverage flow path to direct beverage from the valve to a receptacle.