To facilitate transport of marble from the quarries for the building of the Milan cathedral, the canal was linked with an old moat, and in Italy the first pound lock with mitre instead of the earlier portcullis gates was constructed to overcome differences in water level.
A concrete weir incorporating two sluice gates was constructed at a waterfall in a rock gorge.
A set of NOT gates is constructed from the new repressors and their response function quantified.
Furthermore, based on the distinct colorimetric signals induced by PPi and ALP, an IMPLICATION logic gate was constructed.
The wall above the gate is constructed to form a relieving triangle over the lintel, and this space is blocked with the famous relief panel of two heraldic lions, which gives the gate its name.
By using H+ and Cu2+ ions as chemical inputs and fluorescence or absorbance as outputs, a novel dual-mode molecular logic gate was constructed with RBQ1.
Finally, by using F− and H+ as chemical inputs and the absorbance as output, a INHIBIT logic gate was constructed, which exhibits "Multi-write" ability without obvious degradation in its optical output.
The gate is constructed in sandstone and consists of a central round-arched entrance and two flat-headed pedestrian entrances.
Cambrian Gate or Cambrian Road Gate was constructed during World War I for access to the newly built South Africa Military Hospital.
Earlier scholars favored the former, but the current majority view tends to the latter, meaning that the gate was constructed as an integral part of the Theodosian Walls.
