Re: [gmx-users] Enthalpy of Vaporization

2015-10-05 Thread Rasoul Nasiri
On Mon, Oct 5, 2015 at 7:03 PM, Justin Lemkul <jalem...@vt.edu> wrote: > > > On 10/5/15 2:01 PM, Rasoul Nasiri wrote: > >> On Mon, Oct 5, 2015 at 6:52 PM, Justin Lemkul <jalem...@vt.edu> wrote: >> >> >>> >>> On 10/5/15 1:50 PM, Pall

Re: [gmx-users] Enthalpy of Vaporization

2015-10-05 Thread Rasoul Nasiri
This non-zero value becomes quite significant if you are dealing with highly flexible molecules - Internal molecular dynamics effects are different in the gas and liquid phases. Rasoul On Mon, Oct 5, 2015 at 3:53 PM, Pallavi Banerjee < pallavis...@students.iiserpune.ac.in> wrote: > Hello

Re: [gmx-users] the growth of the molecule

2014-09-22 Thread Rasoul Nasiri
On Mon, Sep 22, 2014 at 7:33 PM, Justin Lemkul jalem...@vt.edu wrote: On 9/22/14 10:45 AM, Александр Селютин wrote: Thanks to everyone I have idea that I can stop simulation, change topology(move end of molecule, add new atoms) and start again. It should be repeated every 2 ps. But it

Re: [gmx-users] inconsistency in obtained temperature values by traj and g_energy tools

2014-07-16 Thread Rasoul Nasiri
On Mon, Jul 14, 2014 at 12:51 PM, Justin Lemkul jalem...@vt.edu wrote: On 7/13/14, 8:41 PM, Rasoul Nasiri wrote: On Mon, Jul 14, 2014 at 1:02 AM, Justin Lemkul jalem...@vt.edu wrote: On 7/13/14, 7:11 PM, Rasoul Nasiri wrote: On Sun, Jul 13, 2014 at 2:27 AM, Justin Lemkul jalem

Re: [gmx-users] inconsistency in obtained temperature values by traj and g_energy tools

2014-07-13 Thread Rasoul Nasiri
On Sun, Jul 13, 2014 at 2:27 AM, Justin Lemkul jalem...@vt.edu wrote: On 7/12/14, 7:25 AM, Rasoul Nasiri wrote: On Sat, Jul 12, 2014 at 12:17 PM, Tsjerk Wassenaar tsje...@gmail.com wrote: Note that two constrained atoms correspond to one constraint. C12H26 26 constrained atoms due

Re: [gmx-users] inconsistency in obtained temperature values by traj and g_energy tools

2014-07-13 Thread Rasoul Nasiri
On Mon, Jul 14, 2014 at 1:02 AM, Justin Lemkul jalem...@vt.edu wrote: On 7/13/14, 7:11 PM, Rasoul Nasiri wrote: On Sun, Jul 13, 2014 at 2:27 AM, Justin Lemkul jalem...@vt.edu wrote: On 7/12/14, 7:25 AM, Rasoul Nasiri wrote: On Sat, Jul 12, 2014 at 12:17 PM, Tsjerk Wassenaar tsje

Re: [gmx-users] inconsistency in obtained temperature values by traj and g_energy tools

2014-07-12 Thread Rasoul Nasiri
On Sat, Jul 12, 2014 at 8:03 AM, Tsjerk Wassenaar tsje...@gmail.com wrote: Please just tell me how values of obtained T by g_traj can be corrected when I use trajectory and tpr files of constrain MD simulations (OPLS) as an input? T(corrected) = T(g_traj)*natoms/(natoms-nconstraints)

Re: [gmx-users] inconsistency in obtained temperature values by traj and g_energy tools

2014-07-12 Thread Rasoul Nasiri
constrained atoms in cell. Cheers, T. Rasoul On Jul 12, 2014 12:01 PM, Rasoul Nasiri nasiri1...@gmail.com wrote: On Sat, Jul 12, 2014 at 8:03 AM, Tsjerk Wassenaar tsje...@gmail.com wrote: Please just tell me how values of obtained T by g_traj can be corrected when I use trajectory

Re: [gmx-users] inconsistency in obtained temperature values by traj and g_energy tools

2014-07-11 Thread Rasoul Nasiri
On Fri, Jul 11, 2014 at 10:27 PM, Justin Lemkul jalem...@vt.edu wrote: On 7/10/14, 9:30 PM, Rasoul Nasiri wrote: On Fri, Jul 11, 2014 at 12:58 AM, Justin Lemkul jalem...@vt.edu wrote: On 7/10/14, 7:09 PM, Rasoul Nasiri wrote: Because 1- Estimation of T for different sub-systems say

[gmx-users] inconsistency in obtained temperature values by traj and g_energy tools

2014-07-10 Thread Rasoul Nasiri
Hi, Can anybody tell me why these two tools give different temperature values based on same trajectory and input files? 1- g_energy_d -f md_shor.edr -s topol_shor.tpr -o T.xvg 0.00 508.066786 1.00 496.066137 2.00 501.665712 3.00 498.809896 4.00

Re: [gmx-users] inconsistency in obtained temperature values by traj and g_energy tools

2014-07-10 Thread Rasoul Nasiri
Is there any other (not g_energy) tools in GROMACS to estimate T properly? Rasoul On Thu, Jul 10, 2014 at 5:51 PM, Justin Lemkul jalem...@vt.edu wrote: On 7/10/14, 12:49 PM, Rasoul Nasiri wrote: Hi, Can anybody tell me why these two tools give different temperature values based on same

Re: [gmx-users] inconsistency in obtained temperature values by traj and g_energy tools

2014-07-10 Thread Rasoul Nasiri
On Fri, Jul 11, 2014 at 12:58 AM, Justin Lemkul jalem...@vt.edu wrote: On 7/10/14, 7:09 PM, Rasoul Nasiri wrote: Because 1- Estimation of T for different sub-systems say phases of gas, interface and liquid. Can be obtained with g_energy? No, not unless they are assigned as separate tc

Re: [gmx-users] Positive energy .

2014-05-13 Thread Rasoul Nasiri
Why do you think positive values are doubtful? What matters are energy differences between different snapshots The absolute energy is meaningless in the FF framework. Rasoul On Tue, May 13, 2014 at 3:59 PM, Bryan Roessler roess...@uab.edu wrote: Did you hit your nsteps limit? 2 probably

Re: [gmx-users] glycated insulin (GROMACS)

2014-04-06 Thread Rasoul Nasiri
See following paper for modelling of initial steps of glycation process protein: http://www.tandfonline.com/doi/abs/10.1080/07391102.2010.10507354#preview For study of advanced glycation end processes, there is nothing to do with emperical FF, you need to use QC approches; see following papers

Re: [gmx-users] conversion of X,Y,Z + velocities to *.trr

2013-12-23 Thread Rasoul Nasiri
On Mon, Dec 23, 2013 at 9:40 AM, Rasoul Nasiri nasiri1...@gmail.com wrote: Many thanks Tsjerk, Let me ask another question. As you know in most cases of analysis, one needs to have tpr file along with the trajectory. How can I construct it? The potential that I'm using in my MD