Abstract---In this paper we present a wavelet compression technique for power quality disturbance data. Power quality transient data are compressed and stored for analysis and classification purposes. Original data can be reconstructed and then analyzed using wavelet transform. Different power quality disturbances including voltage sag, swell, sag with harmonic and swell with harmonics are used...

This study is purposed with the preparation of polyacrylamide/Polypyrrole hydrogel composite, in which the hydrogel of crosslinked polyacrylamide is a matrix and Polypyrrole is an electro-conducting component. The effects of synthesis conditions on the structure of the composite systems, their ability to swell in water, and mechanical characteristics are studied. The proposed synthesis procedur...

Toluidine blue and toluidine blue-nanogold mixtures were incorporated into polyurethane and silicone polymers by a swell-encapsulation-shrink method using acetone-water mixtures. The surface and mechanical properties of the polymers were changed by the swell-shrink process especially the Young’s modulus, but not by the introduction of toluidine blue or nanogold. The antibacterial properties of ...

[1] Observations of velocity fluctuations with periods between about 4 and 30 min, thus longer than infragravity waves and referred to as very low frequency (VLF) surf zone motions, are described and compared with numerical simulations. The VLF motions discussed here exclude instabilities (generated by the wave‐driven alongshore current velocity shear) that occur in the same frequency range by ...

Abstract. The classic characterisation of swell as regular, almost monochromatic, wave trains does not necessarily accurately describe in water bodies shielded from the oceanic climate. In such enclosed areas locally generated waves still contribute to processes at air and seabed interfaces, their presence can be quantified by partitioning components based on speed relative wind. We present sta...

Considerable coastal infrastructure has been developed in Chile over the last two decades, and the impetus for this study was based on concerns with the lack of consistency utilized in the coastal engineering design process, beginning with, but not limited to, the definition of the wave conditions. The available wave records in Chile are of very limited duration, thus many designers rely on a v...

Introduction: Anatomic etiologies of nasal obstruction (NO) include septal deviation, turbinate hypertrophy, and nasal valve collapse. We have also noted that nasal septal swell bodies (NSB) are extremely common and can produce a significant effect on nasal resistance. The aim of our study was to explore changes in validated outcome metrics after surgical reduction of NSB. Methods: 60 consecuti...