What are R factors in Rietveld analysis?

What are R factors in Rietveld analysis?

The most straightforward discrepancy index, the weighted profile R-factor (Rwp), follows directly from the square root of the quantity minimized, scaled by the weighted intensities: R wp 2=Σ iw i(yC,i−yO,i) 2∕Σ iw i(yO,i) 2 (Young, Reference Young and Young1993).

What is Bragg R factor?

Definition. The R factor measuring the agreement between the reflection intensities calculated from a crystallographic model and those measured experimentally.

What is RWP in Rietveld?

The point of doing a Rietveld refinement is not to get an excellent fit but to get the correct solution. For the later, Rp and Rwp values are of little use. You can easily get a smaller Rp or Rwp for an incorrect solution, although it will still be an excellent fit. Cite.

How many types of R factors are found in human?

R-factors have been known to contain up to ten resistance genes.

What does the factor function do in R?

The factor function is used to create a factor. The only required argument to factor is a vector of values which will be returned as a vector of factor values. Both numeric and character variables can be made into factors, but a factor’s levels will always be character values.

Which software is best for Rietveld refinement?

FullProf Programs is the most popular and below link is about structural refinement using FullProf. You can try refining your data using FullProf.

What is FullProf suite?

The FullProf Suite (for Windows, Linux and macOS) is formed by a set of crystallographic programs (FullProf, WinPLOTR, EdPCR, GFourier, etc…) The different programs can be run either in stand alone form (from a console window or clicking directly in a shortcut) or from the interfaces WinPLOTR and/or EdPCR.

How can R Factors be transferred?

Also, R-factors can be taken up by “DNA pumps” in their membranes via transformation, or less commonly through viral mediated transduction, or via bacteriophage, although conjugation is the most common means of antibiotic resistance spread. They contain the gene called RTF (Resistance transfer factor).