the steps taken in designing a loop reactor for bulk propylene polymerization are discussed. the roles played by several parameters like particle growth factor, catalyst activity and solid fraction on reactor volume at different operating conditions are investigated. at first, based on a fixed production capacity and specific rate of catalyst, reactor volume is determined. next, the length and ...

In this paper, an Ultra High Frequency (UHF) base band processor for a passive tag is presented. It proposes a Radio Frequency Identification (RFID) tag digital base band architecture which is compatible with the EPC C C2/ISO18000-6B protocol. Several design approaches such as clock gating technique, clock strobe design and clock management are used. In order to reduce the area Decimal Matrix C...

Patch near-field acoustical holography methods like statistically optimized near-field acoustical holography and equivalent source method are limited to relatively low frequencies, where the average array-element spacing is less than half of the acoustic wavelength, while beamforming provides useful resolution only at medium-to-high frequencies. With adequate array design, both methods can be u...

Guillaume Barbier, Pascal Perrier, Lucie Ménard, Mark Tiede, Joseph Perkell. Token-to-token variability and anticipatory coarticulation as indicators of maturity of speech motor control in 4-year-old children. 21st International Congress on Acoustics (ICA 2013) 165th Meeting of the Acoustical Society of America, Jun 2013, Montréal, Canada. Acoustical Society of America, Vol. 19, Paper 2aSC22, 2...

Computer simulations can be used to generate the spatial and temporal data describing the acoustical behavior of performance halls, but typically the analytical results are difficult to assimilate and compare. By using c o m p u t e r graphics to display the multi-dimensional data, substantially greater amounts of information than that conveyed by standard techniques can he communicated to the ...

Patch Near-field Acoustical Holography (NAH) methods like SONAH and ESM are limited to relatively low frequencies where the average array inter-element spacing is less than half a wavelength, while beamforming provides useful resolution only at medium-to-high frequencies. With adequate array design, both methods can be used with the same array. But for holography to provide good low-frequency r...