A household refrigerator having three compartments: a freezer compartment, a refrigerator compartment, and a condiment compartment. Synthesis and antifungal activity of bile acid derived new steroidal dimers N1,N3-Diethylenetriamine bis cholic acid amide and N1,N3-Diethylenetriamine bis deoxycholic acid amide having novel amphiphile topology is described. A central channel is a gas inlet channel. A treating member is provided proximate a first substrate, and an initial layer of frozen material is formed over a surface of the treating member. A set of set-reset latches is configured such that an edge detector latch is associated with a corresponding SR latch.