This paper presents the comparison of two different methods in the system identification. The experimental modal analysis and operational modal analysis are applied to a local structure of a storage/retrieval machine (S/R machine). The different vibration measurement approach and different theoretic analysis approach give us more information than only one approach. Through the result, the consi...

Multiple frequencies constraints and analytical sensitivity methods were used in structural optimization design of the side plate of 4YK1860 vibrating screen to lower the damage of side plate caused by high dynamic stress. The mass of side plate of the vibrating screen was taken as object function, mode frequencies were regarded as state parameters, size of plate were used as constraint paramet...

Cobalt ferrite (CoFe2 O4 ) nanoparticles have attracted significantly attentions for spintronics, recording media and bioapplications due to their unique magnetic and chemical properties. In this work, single phase CoFe2 O4 nanoparticles were synthesized at various coprecipitation temperatures (60, 80 and 90 °C) without post calcination. The effects of oleic acid as surfactant on the microstruc...

The vibration originated from the rotor’s unbalance mass impacts on the current oscillation. When the rotor rotating at high speed, power amplifier circuit will be burned down by excessive vibration control current, and at the same time the excessive control force will be generated. The vibrating force transfers to frame, which causes the system vibration and influence the dynamic properties an...

A number of current problems of interest in active control involve the need to control the acoustic radiation from a vibrating structure. It has been demonstrated that the optimal solution for minimizing the radiation often does not correspond to minimizing the vibration of the structure. As a result, there has been considerable interest in exploiting the radiation mechanisms for a vibrating st...

Yokkaichi asthma was one of the most common environmental pollution diseases in Japan in the 1960s and 1970s. The problem of air pollution in Yokkaichi was solved in the 1970s. However, mortality and life expectancy were still affected by the late effects of air pollution in patients with Yokkaichi asthma even in the 2000s. In this case report, we described the experience of successful treatmen...

S. Anders,, M. F. Toney, T. Thomson, J.-U. Thiele, and B. D. Terris IBM Almaden Research Center, 650 Harry Road, San Jose, CA 95120 Shouheng Sun, and C. B. Murray IBM T. J. Watson Research Center, Yorktown Heights, NY 10598 a) Electronic mail: [email protected] Monodisperse FePt nanoparticles were prepared using high temperature solution phase synthesis. Polymer-mediated layer-by-layer gro...

Abstract Having a continuous mode of transportation, in the manufacturing and pharmaceutical industries, is desirable this facilitated by usage dual transducer-type ultrasonic levitation-based transportation systems. It well known that structural electrical parameters determine what can be transported continuously, but relationships between these important are still not clear. In study, vibrati...