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On 11/28/11 9:34 AM, <a class="moz-txt-link-abbreviated" href="mailto:anna_gromacs@libero.it">anna_gromacs@libero.it</a> wrote:
<blockquote
cite="mid:29295478.5113411322469274060.JavaMail.root@wmail67"
type="cite">
<p style="margin: 0px; padding: 0px;">Dear all,<br>
<br>
I've got a question: </p>
<p style="margin: 0px; padding: 0px;">in the equation of g(r), is
<ρ<span mce_style="font-size: x-small;" style="font-size:
x-small;">B</span>><span mce_style="font-size: x-small;"
style="font-size: x-small;">local</span> a surface density or
a volume density</p>
</blockquote>
It seems to be a surface density. (check the dimensions of the
different quantities involved)<br>
<br>
<blockquote
cite="mid:29295478.5113411322469274060.JavaMail.root@wmail67"
type="cite">
<p style="margin: 0px; padding: 0px;">I think there is a mistake
in gromacs' manual (gromacs_manual_4.5pdf page 201): "...<ρ<span
mce_style="font-size: x-small;" style="font-size: x-small;">B</span>><span
mce_style="font-size: x-small;" style="font-size: x-small;">local</span>
the particle density of type B averaged over all <span
mce_style="color: #ff0000;" style="color: rgb(255, 0, 0);">sphere</span><span
mce_style="color: #ff0000;" style="color: rgb(255, 0, 0);">s</span>
around particle A with radius r<span mce_style="font-size:
x-small;" style="font-size: x-small;">max </span>..."</p>
<p style="margin: 0px; padding: 0px;">because if we consider <ρ<span
mce_style="font-size: x-small;" style="font-size: x-small;">B</span>><span
mce_style="font-size: x-small;" style="font-size: x-small;">local</span>
as a volume density in (8.3) equation, in my opinion there
isn't the possibility to have g(r) --> 1 at r<span
mce_style="font-size: x-small;" style="font-size: x-small;">max.</span></p>
<p style="margin: 0px; padding: 0px;"><br>
</p>
<p style="margin: 0px; padding: 0px;">You can help me? I am in
error? </p>
<p style="margin: 0px; padding: 0px;">Thanks</p>
<p style="margin: 0px; padding: 0px;"><br>
</p>
<p style="margin: 0px; padding: 0px;">Anna<br>
</p>
<p style="margin: 0px; padding: 0px;"><br>
</p>
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<pre class="moz-signature" cols="72">--
Gianluca Santoni,
Institut de Biologie Structurale
41 rue Horowitz
Grenoble
_________________________________________________________
Please avoid sending me Word or PowerPoint attachments.
See <a class="moz-txt-link-freetext" href="http://www.gnu.org/philosophy/no-word-attachments.html">http://www.gnu.org/philosophy/no-word-attachments.html</a></pre>
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