Aeroelastic qualification requirements are typically met by sizing aircraft to achieve adequate stability margins and keep peak gust responses below specified thresholds. A possible alternative approach is delaying flutter alleviating response embedding dissipative materials into structural components. This requires accurate damping models applicable the analysis of complex configurations. In t...

background and objective: based on the effect of chronic metabolic diseases including diabetes mellitus on the learning and memory, this study was designed to assess the usefulness of administration of salvialonic acid b on lessening of learning and memory deficits in streptozotocin (stz)-diabetic rats. materials and methods: male wistar rats were allocated into control, salvialonic acid b-trea...

A kind of noise is dominated by broadband noise with low frequency tonal components. To achieve noise control on whole frequency band, it is necessary to implement hybrid control technique combining passive control and active control. There are three methods to combine passive control and active control, including active control in passive enclosures, active control outside passive enclosure an...