-\includegraphics[width=0.49\textwidth]{polyvinylalkoholslim/brenner.eps}
-\includegraphics[width=0.49\textwidth]{polyvinylalkoholslim/rorer.eps}
+\includegraphics[width=0.49\textwidth]{images/polyvinylalkoholslim/brenner}
+\includegraphics[width=0.49\textwidth]{images/polyvinylalkoholslim/rorer}