The synthetic glues used are stronger than the wood, and members with cross sections up to 30 × 180 centimetres (12 × 72 inches) are made; these may be tapered or otherwise shaped along their length.
Due to the expanded π system, both pyrenly substituted porphyrin (1) and phenanthrenly substituted porphyrin (2) exhibit large two-photon absorption cross sections up to 4.26 × 104 GM for 1 and 1.36 × 104 GM for 2 at the wavelength of 800 nm.
Beam cross-section up to 104 cm2 and current up to 10 A lead to industrial-scale beam-assisted deposition at 3×10−4 6×10−3 mbar.
Therefore, the neutral axis in the concave side moves from the centroid of the cross-section up to the top flange.
Compound LT1 shows good two-photon absorption cross-section up to ∼1200 GM at 810 nm in tetrahydrofuran, which is attributed to intramolecular charge transfer effect, as supported by density functional theory theoretical calculations.
The influence of the concrete compressive strength, CFRP stiffness, geometric confinement arrangement and loading type on the compressive behaviour of reinforced concrete column elements of circular cross-section up to their failure was assessed.
The burrow systems are cylindrical to sub-cylindrical in cross-section, up to 25 cm in diameter, and characterized by long, multiple branching tunnels, several metres long, that meander horizontally or are slightly inclined (<30°), forming a complex network that is a result of passive fill of a previously open burrow.
As a result, quadrupolar molecules showing very large TPA cross-sections (up to 1.3×10−47 cm4 s photon−1) in the visible red and/or NIR region have been obtained.
The room temperature (RT) ultimate tensile strength (UTS) at the level of 900 1100 MPa and conductivity 50 60% IACS for Cu/SS conductors with cross-sections up to 40 mm2 have been attained.
Finally, the dyes exhibit high two-photon absorption cross-sections (up to 540 GM in glycerol) and allow a fine and bright staining of nuclear DNA with low background fluorescence as shown by one and two-photon confocal microscopy imaging of fixed cells.
