Abstract: A spinel sorbent for adsorbing lithium ions from a liquid is provided. The sorbent has the general formula Li1 +xMn2?yM1m1M2m2 . . . MkmkO4+z, where M1, M2, . . . , Mk are cations different than lithium or manganese; m1, m2, . . . mk are each greater than or equal to 0; x can vary in the range of 0 and 1; y can vary in the range of ?0.1 and 0.9; z can vary in the range of ?2 and 1; where +m1+m2+ . . . +mk; and k is zero or a positive integer. The sorbent has a cubic close packed (CPP) lattice defining a interplanar distance y=x configured to allow passage of lithium ions through the interplanar distance and prevent passage of manganese through the interplanar distance; and has ion exchange sites configured to reversibly ion-exchange a lithium ion.

Abstract: Sorbent compounds useful in the extraction of lithium from liquid sources such as brines (naturally occurring and synthesized), leachate solutions from the leaching of minerals or recycled materials, and others are described. The sorbent compounds are characterized by a larger median particle size and coarser particle size distribution that improves commercial synthesis and performance of the sorbent compounds.

Abstract: A computing equipment box assembly can include a chassis base and a tray. The chassis base can include a bottom panel, an opening through the bottom panel, and a rim defined around the opening. The tray can include a body configured for supporting computing components, a frame section of the body sized to be supported atop the rim of the chassis base; and a downwardly embossed portion of the body extending downwardly from the rim and sized to fit within the opening of the chassis base when the frame section is supported atop the rim of the chassis base.

Abstract: A method for determining a range of a target includes receiving a first time based radar return signal, converting the first time based radar return signal into a first frequency domain signal, detecting a peak of the first frequency domain signal, the peak corresponding to a coarse target range, receiving a second time based radar return signal, using the detected peak of the first frequency domain signal and the second time based radar return signal, converting the second time based radar return signal into a second frequency domain signal, and detecting a peak of the second frequency domain signal, the peak corresponding to a fine target range.

Abstract: A method for determining a range of a target includes receiving a first time based radar return signal, converting the first time based radar return signal into a first frequency domain signal, detecting a peak of the first frequency domain signal, the peak corresponding to a coarse target range, receiving a second time based radar return signal, using the detected peak of the first frequency domain signal and the second time based radar return signal, converting the second time based radar return signal into a second frequency domain signal, and detecting a peak of the second frequency domain signal, the peak corresponding to a fine target range.