BEHAVIOUR OF ELECTRONIC BLOCKS AND DEVICES UNDER ACTION OF IMPACT LOADS AT ROAD ACCIDENTS

The process of impact loads action on vehicle’s design elements that contain electronic devices intended for maintenance of its passive safety is considered. The action time is compared to the speed of shock wave propagation

Model studies toward trivalent cation binding by appropriately functionalized calix[4]arenes

Molecular modeling and molecular dynamics of a series of calix[4]arene tetracarboxylic acids and tricarboxylic acid monoamides revealed that in an aqueous environment the phenolic oxygen atoms do not participate in the complexation of Ac3+. This observation led to the design and synthesis of new calix[4]arene based ionophores, containing multiple glycine units, having an increased number of potential donor sites. Potentiometric titrations in methanol with La3+ as a non-radioactive model for Ac3+ indicated that, although the level of complexation is high for all ligands, a new calix[4]arene derivative 5 is superior at pH < 4. \u