This article considers lter banks for sub-band coding of discrete time electrocardiogram (ECG) signals. Two parallel FIR lter banks are optimized and compared with a classic tree-structured lter bank. The new lter banks give a decrease in signal distortion from 0.6 to 0.8 % PRD compared to the reference lter bank.

background: phosphorus is an indispensable element for the growth of animals and plants. there are several environmental problems related to phosphate; therefore, the technical and economic methods of removing phosphate are of great importance. this study evaluated the efficiency of polyaniline/ni0.5zn0.5fe2o4 magnetic nanocomposite in removing phosphate from aqueous environments. methods: the ...

A new derivative of Cyclotriphosphazene with xanthydrol as the oxygen-containing ligand was synthesized. Firstly Hexaclorocyclotriphosphazene was obtained Hexaclorocyclotriphosphazene from ammonium chloride and phosphorus pentachloride reaction and then the deprotonated xanthydrol was reacted with Hexaclorocyclotriphosphazene in the ratio of 6:1 in dry toluene as the solve...

A structural-magnetic models of the orthorhombic and triclinic modifications arsenates Cu4O(AsO4)2 isotypic phosphates Cu4O(PO4)2 has been built analyzed. Their base elements are complicated ribbons composed antiferromagnetic Cu4 tetrahedra. Structurally, these tetrahedra have no shared copper atoms; however, there strong (AFM) ferromagnetic (FM) couplings between them, both within them. It est...

Summary We demonstrate a new approach to chemosensors suited for analysis of phosphate mixtures. Here, combination cross-reactive receptor and an environmentally sensitive fluorophore allows binding various phosphates obtaining analyte-specific fluorescence response. have investigated flexible imine-pyrrole macrocycle comprising both hydrogen-bond donors acceptors, one that is capable ...

Waxy maize starch phosphates were tested as flocculants in order to determine if they have the potential to replace petroleum-based polymer flocculants currently used commercially. Phosphorylation was carried out by dry heating of starches and sodium orthophosphates at 140 C for 4 h. Native and phosphorylated waxy maize starches were ineffective as flocculants for kaolin in deionized water. How...