We read in our guidebook that each dome had a twin-layer frame, mostly hexagons on the outside and a mix of hexagons and triangles on the inside.
Twin-Layer photobioreactors (TL-PBRs), a type of porous substrate bioreactor (PSBR), have proven to be an efficient cultivation system for microalgal biofilms.
A prototype-scale Twin-Layer photobioreactor immobilizing the green alga Halochlorella rubescens on vertical sheet-like surfaces was constructed and operated using primary and secondary municipal wastewater.
With respect to an optimal Twin-Layer photobioreactor design, results suggest that the highest footprint productivities (~ 50 g m− 2 d− 1 without supplementary CO2) can be obtained at high light dilution rates.
The aim of this study was to obtain, through controlled deposition conditions, a group of TiN/AlN nano-multilayer films with various periods (TiN/AlN twin-layer thickness) first, and then to investigate the influence of periods on their fundamental properties and wear behavior.
A numerical scheme is proposed to solve singularly perturbed two-point boundary value problems with a turning point exhibiting twin boundary layers.
It is shown through a dislocation analysis that an elementary twin (three layers) is energetically favorable for a diameter below ∼7 nm, at which point a shear loop comprising a perfect dislocation is formed.
A variety of approaches have been used to broaden the spectral bandwidth by engineering the device active regions through including quantum dots [1], multiple quantum wells (MQWs) [2], stacked twin active layers [5], asymmetric dual quantum wells [6], and quantum-well intermixing [7].
High purity silver single crystals with an initial (1 1 2)[11¯1] orientation were channel die deformed to total reductions of 88% (logarithmic strains 2.1), first developing twin-matrix layers and then compact clusters of two families of shear bands.
It is shown that periodic arrangements of two layer twins produce modulated crystal structures, such as 14M.
