Recent content by raymound

Hi, I am trying to calculate second virial coefficient from interaction potentias and I have to Integrate at Infinity level and it seems that Integrate doesn't converge. can you help me integrate this function. Integrate is attached as an image. Regards Raymond

hi I have a list which I want to drop some of it's rows and I have the id of the rows I want to drop in a list and there's no algorythem in the list how can I do that? I know the Command Drop[MC, {id}] whould drop the row number id but if I put this in a loop and try to drop them one by...

I almost did the whole thing and mathematica is perfect for this purpose I just can't find out how can I tell mathematica to search for a string backward from the current position if you guys can help I'll be grateful

hi, I have a big text file which includes lots of text and data (gaussian log file (it's a scan file)) and I need to extract some data from it. so I need mathematica to search along the textual data and find some strings and put the value in front of that string into a variable. can you...

thanks

yes, is that the only way isn't there any syntax like the ones in fortran or php?

hi I was going to ask if there's a way to command mathematica not to run a sentence or a part of a sentence as "//" works in php and "!" in fortran

yup I'll have to use charged molecules and of course ions will be on my list. consider this all my molecules will be charged + or - I mean they all will be unique

I just found some applications for molecular dynamics simulation but they are for bio stuff. I want to study lorentz force on their motion. and yup If I have to I'll code the program by myself and of course I don't want to study that motion on a super computer. so I'll choose the simplest...

please some one help me. at least name some of equations used to describe molecules motion.

what is important for me is that the simulation should show the effect of heating on molecules motion well at least at a moderate accuracy the rest doesn't really matter much in this simulation. I men for example if the hard sphere works better for liquid molecules motion on heating then that...

hi before anything don't blame me much cause I'm chemical Eng & don't know physics much! I'm about to run a computer simulation which is strongly related to physics so I need your help. I need to simulate the motion of molecules when I heat them up likely a heavy liquid perhaps some...