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Marwan .
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Mathematics Physics

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MAXIMAL TEMPORAL AMPLITUDE (MTA) OF TRI-CHROMATIC SIGNALS Marwan .
Proceedings of ICMSA Vol 1, No 1 (2005): ICMSA 2005
Publisher : Proceedings of ICMSA

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Abstract

Previous numerical and experimental results about surface waves whichare originally bi-chromatic signal on the wave maker, showphenomenon about peaking and splitting dwing their propagation in thewave tank. To investigate this phenomenon, especially in peaking, aquantity called Maximal Temporal Amplitude (MTA) is introduced.This quantity can be used to predict the position of the occurrence ofmaximal peaking. ln this paper, we present the MTA form of tricluomaticsignal, especially to predict the position of maximal peakingof the signal. Here, the tri-chromatic signal is a superposition of threemono-chromatic signals with different of amplitudes, frequencies andinitial phases. We use KdV equation with exact dispersion relation(linear) as a model. We get some approximated solution by expandingthe equation in the power series of amplitude and wave number of trichromaticsignal up to third order.Keywords : Phase tri-chromatic signal, Maximal Temporal Amplitude
River Water Quality Spatial Analysis Based On Physical Parameter Throughout Krueng Daroy In Banda Aceh Mulyani .; Marwan .; Nazli Ismail
Journal of Aceh Physics Society Volume 1 Number 1 March 2012
Publisher : PSI-Aceh

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Abstract

Water quality research has been done along Krueng Daroy in Banda Aceh. The research is aimed to observe water quality based on physical parameters and to identify the sources of pollutant spatially. We measured temperature, turbidity, color, pH, odor, TDS and electrical conductivity, where the data were collected using thermometer, turbidity meter, spectrophotometer, pH meter, TDS meter and conductivity meter, respectively. The physical parameters of water in the upstream area fulfilled the standard of the Health Minister of Republic Indonesia according to law Number 907/ MENKES/ SK/VII/2002 and it is suitable for household needs. However, the water at the downstream area are mostly polluted
Co-Authors Mulyani . Nazli Ismail