This propulsion and control system using surface-cutting double propellers, designed for shallow-draft ships, can improve efficiency by as much as 40% compared to conventional propulsion systems.
Three different designs of CSTR with Napier grass as substance were evaluated for mixing efficiency, vorticity, and flow behavior, Model 1: one propeller no baffle tank, Model 2: one propeller with baffles tank, and Model 3: double propellers with baffles tank.
(142) These substrate recruiters directly bind to the DDB1 double-propeller fold, revealing a novel mechanism underlying the substrate recruitment by this important E3 complex.
Though structural information is available for the N-terminal RRM domain (ElAntak et al., 2007; Khoshnevis et al., 2010) and a segment of the C-terminal tail (Herrmannová et al., 2012), great uncertainty remained about the central region of the protein, predicted to form either a single or a double β-propeller structure.
The structures were solved and refined to 2.10- and 2.20-Å resolution, respectively, revealing that the quadruplex topology in both structures is unchanged by the addition of the ligands, retaining a parallel-stranded arrangement with external double-chain-reversal propeller loops.
A low pressure steam turbine drove the ship's single screw propeller through double reduction gearing and a hydraulic coupling.
This hypothesis was further supported by examining the other folds of the human telomere sequence: propeller (all double-chain reversal loops) and basket (no double-chain reversal loops).
This hypothesis was further explored by examining the basket fold that does not have a double-chain reversal, and the propeller fold that has only double-chain reversal loops.
The copter itself consists of a center control unit with battery and four powerful propellers that could double as leaf blowers.
which apparently double as helicopter-esque flight propellers.
The largest change was observed for the T=T-containing natural telomere sequence when the propeller fold (all double-chain reversal loops) was studied.
