We present a brief summary of new technical developments of passive and active vibration controls which we have performed for the last several years partly as an international collaborative R&D project on Smart Materials and Structural Systems sponsored by the Japanese Ministry of Economy, Trade and Industry. In connection with the passive damping control, shape memory alloys (SMAs) were used as damping elements. To examine the effect of damping enhancement, beams with SMA films bonded onto them or SMA wires embedded into them were made, and free damped oscillations were measured. The damping coefficient increased by more than 100% compared with the beams without SMAs. Thermodynamic behaviors of an SMA wire and film were also investigated experimentally and numerically. In active vibration control, a new concept of smart material systems was proposed. That is a partially magnetized alloy, which is stiff and strong enough as a structural element and responds sufficiently quickly as an actuator due to an electromagnetic force. A simplified experiment and numerical simulation were performed and the results showed the feasibility of the proposed smart material system using the electromagnetic force.

Organic chemistry Z 0200 HIV-1 Integrase Inhibitors as New Components of Antiviral Therapy -[80 refs.]. -(PRIKAZCHIKOVA, T. A.; SYCHEVA, A. M.; AGAPKINA, Y. Y.; ALEKSANDROV, D. A.; GOTTIKH, M. B.; Russ. Chem. Rev. (Engl. Transl.) 77 (2008) 5, 421-434; Belozersky Inst. Phys. Chem. Biol., Lomonosov Moscow State Univ., Moscow 119899, Russia; Eng.) -Lindner 45-248