Abstract: A gel tray for a bacterial transformation lab exercise has a plastic body with four parallel gel channels and four filling ports, one for each channel into which unmodified bacteria and heat-shocked bacteria can be injected by students along with appropriate reaction constituents to demonstrate transformation of the bacteria under visualization. A seal may be provided to seal the tops of the gel channels and a lid can cover the gel tray during incubation.

Abstract: An adjustable mattress is described herein. The adjustable mattress is comprised of one or more adjustable elements. The adjustable elements may, in some examples, be filled with air or other fluid in order to adjust the height and firmness of the adjustable mattress. The adjustable mattress may provide a user with assistance in rolling over or repositioning while using the adjustable mattress.

Abstract: An automotive battery module with numerous battery cells and a series-based cooling fin arrangement placed in thermal communication with at least two of the battery cells. Heat generated within the battery cells by, among other things, electric current that can be used to provide motive power for the automobile, may be removed by the cooling fin that includes different portions tailored to remove relatively lesser or greater amounts of heat, depending on a potential temperature difference among the cells. The construction of the cooling fin is such that multiple heat transfer paths are established, each configured to convey heat away from the battery cells, as well as to keep temperature differences between adjacent series-cooled battery cells to a minimum. In one form, the multiple heat transfer paths may include a relatively laminar portion and a relatively turbulent portion, where in one form the increased turbulence may be obtained through numerous turbulators.