md_dt = models.FloatField(default=0.20)
md_lang = models.CharField(max_length=10,choices=MD_LANG,default='langevin')
md_tau = models.FloatField(default=1.0)
md_dt = models.FloatField(default=0.20)
md_lang = models.CharField(max_length=10,choices=MD_LANG,default='langevin')
md_tau = models.FloatField(default=1.0)