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P. S. Stewart, J. Rayner, F. Roe, and W. M. Et-rees, Biofilm penetration and disinfection efficacy of alkaline hypochlorite and chlorosulfamates, J Appl Microbiol, vol.91, pp.525-532, 2001.

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P. Stoodley, I. Dodds, J. D. Boyle, and H. M. Et-lappin-scott, Influence of hydrodynamics and nutrients on biofilm structure, J Appl Microbiol, vol.85, pp.19-28, 1998.

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, Annexes INDEX_MATRIX=1:Grey_levels

, 1)) % to see the histogram threshold=50000; % any number bigger than Gry_levels for tc=1: Grey_levels %tc % Foreground calculations FG=double, % transform it % plot(INDEX_MATRIX,XH

%. , :tc,1); % foreground index FG_RESULT=FG.*IM_FG; % multiply index and histogram Sum_FG=sum(FG_RESULT)

. Sum_fg_index=sum, FG

, Grey_levels,1), issue.tc+1

%. Background and . Im_bg=index_matrix,

, ArealPorosity= 1-sum(sum(Y))/(d(1)*d(2)) % porosity = total_void pixels/total_pixels subplot

, % show original image % AverageRunlenghts for horz=1

, Y((d(1)+1),horz)=0

, % horz for, vol.1

, Y_perimeter=bwperim(Y)

, % it is a new image

, Perimeter=sum(sum(Y_perimeter)) % calculate perimeter xlswrite('report.xls',N1

, report.xls',ArealPorosity,'ArealPorosity','D1')

, report.xls',N1,'Homogeneity','A1')

, report.xls',H,'Homogeneity','D1')

, report.xls',N1

, report.xls',N1,'TexturalEntropy','A1')

, report.xls',TE,'TexturalEntropy','D1')

, report.xls',N1,'Runlenghts','A1')

, report.xls',AVRL,'Runlenghts','D1')

, report.xls',AHRL,'Runlenghts','E1')

, report.xls',N1,'Diffusiondistances','A1')

, report.xls',ADD,'Diffusiondistances','D1')

, report.xls',MDD,'Diffusiondistances','E1')

, report.xls',N1

, report.xls',Perimeter

, Annexe 4 : Corrélation entre la quantité de N. fowleri mesurée dans l'eau et dans le biofilm