The ability of the human cognitive system to distinguish between multiple, simultaneously active sources of sound is a remarkable quality that is often taken for granted. This capability has been studied extensively within the speech processing community andmany an endeavor at imitation has beenmade. However, automatic speech processing systems are yet to perform at a level akin to human profic...

Blind source separation (BSS) of audio signals in echoic environments such as an office room is still a very challenging problem. Here we approach the problem from a practical perspective and shed light on how robust a two channel echoic parametric demixing can get. We assume that an oracle (i.e. a perfect estimator) provides a truncated estimate of the mixing FIR filters for a given source con...

Size and geometric control of nanomaterials are important to the discovery of intrinsic size/shape dependent properties and bottom up approaches for the fabrication of functional nanodevices. Two general strategies have been employed to create size-uniform nanocrystals. One method is direct particle size control during synthesis by adjusting growth parameters; 7–9] the other is post-synthesis s...

When two solutes have dissimilar structures, they move through an electrophoretic medium with different mobilities and, therefore, different speeds. This phenomenon is used to separate the charged components of a mixture. In a conventional electrophoretic separation, the velocities and diffusion coefficients of all solutes are constant because the transport properties of the medium are static, ...

Histochemical analysis of balloon-injured rat carotid arteries revealed a coordinated expression of nonmuscle myosin heavy chain-A and -B (NM-A and NM-B) in response to injury. Expression of these nonmuscle myosin forms shifts from the media to the adventitia and intima. In contrast, expression of smooth muscle myosin heavy chain-1 (SM-1) within the media is not altered, whereas smooth muscle m...

The effect of heavy metal ions (Cd, Cr 3+ , Cu 2 , Ni, Pb 2+ and Zn) on the growth and germination of conidia of the aphid pathogenic fungus Pandora neoaphidis was studied. The metal ions were added into the culture medium in three concentrations: A – concentration corresponding to the mean content of that metal in Polish soils, B – concentration 10-times higher and C – 100-times higher than th...

Cultured arterial smooth muscle cells (SMCs) with distinct phenotypic features have been described by several laboratories; however, it is not presently known whether this phenotypic heterogeneity can be maintained within an in vivo environment. To answer this question, we have seeded into the intima of denuded rat carotid artery 2 SMC populations with well-established distinct biological featu...

This thesis studies the theory and application of co-channel digital signal separation techniques. We set up a test-bed with the GNU Software Defined Radio (SDR) platform where we implement and experiment with single-antenna signal separation algorithms. We mainly investigate linearly-modulated digital signals. To do this, we design a multiple RFID card reader capable of decoding multiple commo...

this study was conducted in assaluyeh region, southwest of iran to show utilization and efficiency of sequential extraction analysis in environmental impact studies using soil and related regolith materials as sample media. in order to investigate distribution of heavy metals, optimized bcr (community bureau of reference) sequential extraction analysis method was used. in this caseeight repres...