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<DIV><FONT face=ΣΧΤ² color=#008000>Hi e</FONT><FONT face=ΣΧΤ²
color=#008000>veryone:</FONT></DIV>
<DIV><FONT face=ΣΧΤ² color=#008000> From manual 3.2 chapter 4, i found there
are many function for non-bonded or bonded interaction. The function used in my
computation can be choosen by modify *.top.</FONT><FONT face=ΣΧΤ²
color=#008000>But the function has already been set if we choose the force
field. </FONT></DIV>
<DIV><FONT face=ΣΧΤ² color=#008000> For example, the Bond stretch function
have Harmonic potential and Fourth power potential. I choose gromos96 force
field when i used pdb2gmx to build molecule then it will choose Fourth power
potential. Then i modify the *.top to set function to 1 that is Harmonic
potential.<FONT color=#ff0000>Which is the real function used in
computation?</FONT></FONT></DIV>
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