\chapter*{abbreviations \markboth{abbreviations}{abbreviations}}
\label{chap}
\addcontentsline{toc}{chapter}{List of Abbreviations}

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\begin{abbreviations}
%\item[ADC] Analog to Digital Converters
%\item[AIMMS] Advanced Interactive Multidimensional Modeling System
%\item[AMPL] A Mathematical Programming Language
\item[] 

%\item[WSNL] Wireless Sensor Node Leader

\end{abbreviations}

   
