Subphthalocyanine basicity: reversible protonation at the azomethine bridge

The low basicity of phosphabenzenes: first examples of protonation, alkylation, and silylation reactions.

Crossing the Bridge at Night

We solve the general case of the bridge-crossing puzzle. 1 The Puzzle Four people begin on the same side of a bridge. You must help them across to the other side. It is night. There is one flashlight. A maximum of two people can cross at a time. Any party who crosses, either one or two people, must have the flashlight to see. The flashlight must be walked back and forth, it cannot be thrown, et...

Local Scour at Single Column Arrangement of Bridge Piles Group

In regard to wide piers, the pile group rather than single pile is used frequently to bear the loading of the structure in a particular arrangement; piles group composed of only one column of piles in the flow direction has a great effect on supporting the bridge deck. In this study, local scour at a single column arrangement of the piles group made up of four rows of piles characterized by dif...

Influence of membrane potentials upon reversible protonation of acidic residues from the OmpF eyelet.

In this research we employed single-molecule electric recording techniques to investigate effects of the transmembrane and dipole potential on the reversible protonation of acidic residues from the constriction zone of the OmpF porin. Our results support the paradigm according to which the protonation state of aspartate 113 and glutamate 117 residues from the constriction region of OmpF is infl...

Dynamics of molecular motors in reversible burnt-bridge models

Dynamic properties of molecular motors whose motion is powered by interactions with specific lattice bonds are studied theoretically with the help of discrete-state stochastic “burnt-bridge” models. Molecular motors are depicted as random walkers that can destroy or rebuild periodically distributed weak connections (“bridges”) when crossing them, with probabilities p1 and p2 correspondingly. Dy...