<DIV>
<DIV>Dear Sir,</DIV>
<DIV>&nbsp;&nbsp;&nbsp;&nbsp; 
<P class=MsoBodyText style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%"><SPAN lang=EN-US style="FONT-SIZE: 12pt"><STRONG><FONT face="Times New Roman"><SPAN style="mso-spacerun: yes">&nbsp;If</SPAN> I constraint some </FONT></STRONG></SPAN><SPAN lang=EN-US style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">atoms(DELTA(i)=0.0),&nbsp;does &nbsp;the speed of geometry optimization&nbsp; become significantly faster than before?</SPAN></P></DIV></DIV><p>__________________________________________________<br>赶快注册雅虎超大容量免费邮箱?<br>http://cn.mail.yahoo.com