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<DIV>Dear all:</DIV> <DIV> I'm a newbie to x-ray crystallography.I have some difficulties applying bulk solvent correction using Xplor.</DIV> <DIV> I used the standard procedure implemented in xplor3.851 but the result was unsatisfactory.</DIV> <DIV>The low-resolution R-factors dropped but the high-resolution R-values increased about 7% percent.(Ksolv=0.22 and B-factor=39.29</DIV> <DIV> Here is the R-values before and after corretion:</DIV> <DIV> { 4.74,100.00, 4503, 0.2765, 0.2765 }, <BR> { 3.76, 4.74, 4432, 0.2300, 0.2551 }, <BR> { 3.29, 3.76, 4350, 0.2725, 0.2593 }, <BR>
{ 2.99, 3.29, 4234, 0.3035, 0.2654 }, <BR> { 2.77, 2.99, 4018, 0.3357, 0.2717 }, <BR> { 2.61, 2.77, 3727, 0.3664, 0.2777 }, <BR> { 2.48, 2.61, 3340, 0.3851, 0.2826 }, <BR> { 2.37, 2.48, 2673, 0.3803, 0.2859 }},<BR> {{ (* resol.-range #reflections R-value Accum.*)<BR> { 4.74,100.00,
4503, 0.2453, 0.2453 }, <BR> { 3.76, 4.74, 4432, 0.2080, 0.2282 }, <BR> { 3.29, 3.76, 4350, 0.2622, 0.2363 }, <BR> { 2.99, 3.29, 4234, 0.3176, 0.2476 }, <BR> { 2.77, 2.99, 4018, 0.3751, 0.2590 }, <BR> { 2.61, 2.77, 3727, 0.4267, 0.2696 }, <BR> { 2.48, 2.61,
3340, 0.4511, 0.2780 }, <BR> { 2.37, 2.48, 2673, 0.4488, 0.2837 }},</DIV> <DIV> </DIV> <DIV>Your precious suggestions are highly appreciated.</DIV> <DIV> </DIV> <DIV>Mike</DIV><p> 
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