--- a
+++ b/Sequential/sys_ndRad.asv
@@ -0,0 +1,49 @@
+% In this code we include logistic growth of normal cells and PM cells
+% along with radiation effect from Gibins work.
+
+function xprime = sys_ndRad(t,x,D)
+
+xprime = zeros(2,1);
+
+% Parameters that are fixed
+
+N = 10^9; % Sachs
+lambda = 0.40; % Sachs
+r = 0.75; % Fitting , sachs
+
+K = 30; % Sachs       
+d = D/K; 
+
+tau = 0.02;   % radiation time- 30 minutes = 0.02 days
+
+alpha = 0.18*(d/tau); % Fitting , sachs
+gamma = 10^(-10)*(d/tau); % Fitting , sachs
+
+    if(t<=K+tau)
+        t-floor(t);
+        if (t-floor(t)<=tau)
+            t;
+            
+            xprime(1) = lambda*x(1)*(1-x(1)) - alpha*x(1) - gamma*x(1);
+            xprime(2) = r*lambda*x(2)*(1-x(1)) - alpha*x(2) + gamma*N*x(1);
+        else
+
+            xprime(1) = lambda*x(1)*(1-x(1));
+            xprime(2) = r*lambda*x(2)*(1-x(1));
+        end
+    else
+        
+        xprime(1) = lambda*x(1)*(1-x(1));
+        xprime(2) = r*lambda*x(2)*(1-x(1));
+        
+    end
+
+
+
+
+
+
+
+
+
+