Abstract: Bio-electro reactors with real-time adjustable electric parameters and sequencing programmable power supplies are disclosed. According to an aspect, a bio-electro reactor for control of electrolysis gases bubbles within a biologically-active substance includes a vessel defining an interior for holding a biologically-active substance. The bio-electro reactor also includes electrodes positioned to be electrically coupled with at least a portion of the biologically-active substance. Further, the bio-electro reactor includes an electric source configured to apply voltage across the electrodes. The bio-electro reactor also includes an electrical controller configured to determine an electrical impedance at one or more of the electrodes for use in controlling electrolysis gases bubbles within the biologically active substance.

Abstract: A reversible connection device to attach a cover to a tablet computer in two opposite configurations has a channel pivotally coupled to the cover to receive an edge of the tablet computer. The channel has a first magnet array to magnetically attach to a magnet array of the edge of the tablet computer in a first orientation of the tablet computer with respect to the cover and the channel. A tab is movably coupled in and carried by the channel and movable into the channel. The tab has a second reversed magnet array to magnetically attach to the magnet array of the edge of the tablet computer in a second reversed orientation of the tablet computer with respect to the cover and the channel. The second reversed magnet array has a reversed orientation with respect to the first magnet array of the channel.