Why the CHi^2 is close to zero with a bad fitting but the Rp and Rwp are still high?

I am refining my XRD data using in FullProf program. The intensity of the modulated X-ray peaks is almost flat. I tried to adjust the peak intensities but unsuccessful. What is the reason? I guess...

23 February 2021 2,304 4 View

Are there any remarkable processes in practice to valorise both solid and liquid contents of city waste to fine chemicals?

Could anyone please suggest me a good texts/methods about city waste management towards the fine chemical ends? I am interested to develop methods to process both solid and liquid parts to...

01 January 2021 6,201 5 View

Hello Researchers, can organizational socialization effects on organizational ambidexterity? what's your opinion?

organizational ambidexterity simply talks about explosive and explorative innovation and how can this variable used with different variables i.e. leadership, resources, organization antecedent....

28 December 2020 4,022 3 View

Why peaks are shifted in XRD anlysis ?

I have synthesized zinc oxide nanoparticles by physical method (sputtering) direct interaction of plasma with zinc target and it is done in atmosphere. The sample were prepared at different...

18 December 2020 10,010 6 View

How to determine Friction coefficient in orthgonal milling?

I have used a Pin-on-disc tribometer to find the friction coefficient. However, now I am getting feedback from some seniors that I need to get a friction coefficient from orthogonal milling. There...

15 November 2020 8,151 9 View

What is your opinion about this UV-Visible spectra of Graphene oxide?

? As I have synthesized graphene oxide following the Modified Hummers method.One thing I understand that the absorption is too high but what is the reason behind this distortion and how I can fix...

05 November 2020 7,540 4 View

How to write result and discussion regarding 16S and ITS2 soil microbiome?

Hi everyone, I have a problem about how to write a result and discussion for my research project. It is about bioinformatics result from rhizosphere soil and bulk soil. I am lost and not sure...

07 July 2020 7,434 6 View

How to calculate kinetics using TGA data in excel?

I have tried to calculate kinetics in spreadsheet by Method of Coats Redfern but i did'n get the correct result of Ea. I got negative value instead of positive. I think my formula is'n correct....

23 June 2020 1,781 7 View

What is the expected time in which COVID-19 (Novel Corona Virus) would vanish from the surface of the Earth?

Dear Fellows With the developing stories of the spread of COVID-19 all around the world, which has been declared as a pandemic by WHO recently, I am wondering, in how much time this virus would...

11 March 2020 3,381 41 View

What is the recommended tool to assess the quality of case-control studies included in a meta-anlysis?

I am working on a meta-analysis of case-control studies. I used Newcastle-Ottawa scale (NOS) to assess the quality of the studies. I couldn't find a good reference to interpret the results...

08 March 2020 7,961 4 View

How to increase solubility of Poly acrylic acid in Dioxane solvent?

I am working with Polyacrylic acid (100.000Da) and instead of water, I need to use another solvent (dioxane) to dissolve PAA. However, because of the high molecular weight, it's quite hard to...

25 February 2021 2,225 5 View

How to perform Kaplan-meier survival analysis in SPSS?

Hi everyone, This is my first time of attempting to run survival analysis. I have a data on patients with End-stage Kidney Diseases (ESKD). I would want to run survival probability by treatment...

16 February 2021 2,647 3 View

Charmm/GROMACS Residue 'ZN' not found in residue topology database?

I am trying to do some MD simulations of a protein with zinc ions. I am trying to use a charmm forcefield (I have tried 2017 and 2021) and Gromacs. I get an error when doing pdb2gmx Residue 'ZN'...

12 February 2021 9,367 2 View

Are there any technical and safety tips or details for hot salt baths?

29 January 2021 6,036 2 View

How can you attach polyurethane devices on glass slides?

I am making microfluidic devices made of polyurethane. The problem I am facing is that I am unable to attach these devices to glass slide even after plasma treatment (air plasma). Some of the...

28 January 2021 5,194 2 View

Is it possible to prepare clay minerals by mixing pure oxides of required elements? What would be theoretical difficulties with it?

Practically this is not at all necessary. But theoretically, would hydrous/hydrothermal synthesis be enough (like mix 1 mole alumina gel and 4 mole silica gel and gently heat) or would it require...

26 January 2021 6,403 3 View

Can I simulate Ferrite in HFSS?

I have a design with 2 dipoles working at different frequencies joined in one system and separated by Ferrite. I think, Ferrite was used to minimize the interference between 2 antennas as much as...

25 January 2021 5,918 3 View

How do I know the parameters for calculating the dislocation (edge and screw) density from XRD?

Especially the C12, C44, and Ai values for ferrite pearlite microstructure. Thanks

19 January 2021 9,035 5 View

What solvent is suitable for ferric oxide nanoparticles?

Please help me suggest the appropriate solvent for the ferric oxide nanoparticles for the possibility of exploring their use in cancer treatment .. Your suggestions are very important to me.

11 January 2021 5,321 4 View

How to get mesoporous cobalt ferrite thin film on Pt/Si substrate by electrodeposition method?

We want to deposit a thin film of mesoporous cobalt ferrite using a surfactant on Pt coated Si substrate by electrodeposition. What is the procedure for it? Does KLE polymer useful for this procedure?

10 January 2021 467 10 View