Abstract: An example energy storage system includes an enclosure. The enclosure includes at least one door. The enclosure stores a plurality of battery racks. Each battery rack holds a respective plurality of battery modules. The enclosure further stores a plurality of plenums. The plurality of plenums includes a left plenum and a right plenum coupled together to form an enclosed channel around the plurality of battery racks to direct air to the plurality of battery racks. The enclosure further stores a plurality of heating, ventilation, and air conditioning (HVAC) systems mounted on the at least one door to supply air to the left plenum and the right plenum. Each HVAC system includes a respective supply vent and a respective return vent. The left plenum and the right plenum each include a plenum interface for coupling to the respective supply vent or the respective return vent.

Abstract: Kit of parts comprising a synthetic diamond (17), which is accompanied by a slice (9) that was cut off the same original synthetic diamond (7), whereby both the slice (9) and the synthetic diamond 17) are engraved with an identical identification or with an identification which shows that the synthetic diamond (17) and the slice (9) belong together. The kit also comprises an accompanying numbered certificate (12) of authenticity, which refers to the identical identification engraved on the synthetic diamond (17) and the slice (9). The identical identification engraved on the synthetic diamond (17) and the slice (9) comprises the number of the accompanying certificate (12) of authenticity or refers to it.

Abstract: Systems and methods for predicting a user's learning level or an Area Of Concern (“AOC”). The methods comprise: presenting multimedia content to a user of a computing device; collecting, by at least one learning level indicator device, observed sense data specifying the user's behavior while the user views the multimedia content; analyzing the observed sense data to determine a plurality of metric values for each of a plurality of word categories, a plurality of graphical element categories and/or a plurality of concept categories; and using the metric values for predicting the learning level or AOC based on results of the comparing.