In the figures, there are spectra, which I refined in MAUD, but they show two different peaks. Why is it MAUD that isn't good for XRD refinement?
I am planning to conduct a cage study to determine a critical density of an univoltine casebearer moth in red clover seed crop. This requires to release first instar larvae in the cages with the...
02 November 2020 6,577 3 View
Do we have any laboratory tests to determine the undrained residual strength parameters ? We use reversal direct shear test or ring shear test to determine residual strength, but in general both...
25 October 2020 8,062 3 View
I work with very less volume of sample 10-20 ul, as that is the amount of tears we can collect. Increasing sample volume requires multiple visits by the participants for just one assay. So, is...
22 March 2016 4,608 5 View
Hi I am working to develop the water poverty in a river basin in Nepal, and it need river discharge data but the problem is we do not have enough coverage of the stations. Do you have any...
15 March 2015 3,804 13 View
Tunnel excavation exposes joint systems and ground water may be leaked through the exposed joint systems to the tunnel leading to the drawdown of groundwater table. What is the best way to...
02 February 2014 403 4 View
I have tried every combination of parameter changes and after that i have a poor chi square value. I can't get it lower any further. I know there have been a lot of discussion about Rietveld...
26 February 2021 8,480 3 View
I was refining my XRD data in FullProf. Highest intensity was 400000. The fitting was good but still the Chi^2 value is very high (0.174E+04) I divided the intensity by some constant factor (say...
17 February 2021 3,383 5 View
I have a protein model and want to replace a 12-amino acids-long region within the center of the model with those of a PDB file containing a 12-amino acids long peptide of the same sequence. This...
02 February 2021 779 2 View
I tried to do single-crystal Rietveld Refinement on my single-crystal XRD data using the option "refinement on single-crystal data/ integrated intensity data" in Fullprof but it is giving error...
30 January 2021 7,813 3 View
To have the desired grain size in 6061 and 6063 Al alloy, what should be the minimum % of Ti and B pick up and what is the chemistry/metallurgy behind that?
07 January 2021 9,305 2 View
Hello everyone, I am aiming to write a PHD proposal of 1000 words. The research is described by the supervisor. That means, research questions, aim, and instruments are well defined by the...
01 January 2021 6,291 7 View
I am trying to refine my XRD data with Fullprof software. Although I got low values for R Bragg and Chi 2 factors, when I insert new cell parameters as phase, they don't fit all peaks. In fact,...
18 December 2020 9,322 7 View
Hi Is it possible to model a proton disorder from the single crystal X-ray diffraction data? We don't have access to neutron diffraction. #crystallography #SCXRD #refinement of structures Thanks
12 December 2020 9,507 3 View
I have XRD data of a doped powder sample. How can I perform the Rietveld refinement using GSAS-2. When I use cif file of doped powder, symmetry is lost in the refining process. How to perform...
10 December 2020 9,717 4 View
Some of the metals used to build the battery pack for a hybrid car or electric vehicle can only be mined in certain areas of the world. Is this slowing down the acceptance of the vehicles? Thank...
08 November 2020 934 3 View