What is the general cyclic energy degradation factor for plain concrete at material level in stress strain curve?

Plain Concrete subjected to cyclic loading get reduction in its stiffness and strength with the every cycle of loading. What is ratio of energy enclosed in one hysteresis loop to adjacent...

10 February 2021 1,051 1 View

The Akaike information criterion of the random forest model ?

Please, how to calculate the number of model parameters of the random forest model to determine the Akaike Information Criterion (AIC) using this following expression: AIC = n * log(MSE) + 2 *...

27 January 2021 816 6 View

Suggest me some satellite image datasets used for crop yield estimation?

I have my synopsis presentation and i have to provide details about 2-3 datasets that I can use in my research. Topic is crops Yield estimation using satellite images. suggest me what I can write?...

13 January 2021 1,675 3 View

What is the reason of suddenly increasing the concentration while evaluating the photocatalytic performance by RhB dye degradation?

I am doing a photocatalytic performance evaluation by RhB dye degradation. I am facing a problem which is: After achieving the absorption -desorption equilibrium, I checked the concentration and...

04 December 2020 3,922 20 View

Edu assay by spectrophotometry means?

Dear all, Have any one performed edu assay by spectrophotometric means ? I'm looking for a kit for that purpose. I have Chinese kit for this purpose, I followed their protocol but the result is...

24 November 2020 1,766 3 View

Either SEM analysis are enough to justify the morphology and micro structure of activated carbons? or I should go for TEM analysis as well?

While I was discussing my nitrogen adsorption isotherms in the context of micropore, mesopores, total pore volume for activated carbon samples prepared from waste materials, I received a review...

13 November 2020 1,971 3 View

How can we measure dissimilarities between two images layout? Like alignment of button, text box, text overlapping?

I want to extract dissimilarity information of two images layout. Wanna check text, button, and text box alignment, text overlapping, and more other layouts difference. how we do that? any tool,...

25 October 2020 7,190 7 View

Any suggestions of bioinformatic tools to identify/predict the effect of mutations observed on the function of proteins?

04 October 2020 1,552 4 View

How to Determine LD50 of a test compound by Lorke's Method if your mice (mus musculus) dies at the lowest concetration i.e. 10mg/kg?

I have used Lorke's method of determining LD50 of my test drug. The lowest dose according to this method is 10mg/kg and my mice died at this dose within the 30 minutes of IP injection. Does that...

22 September 2020 9,959 3 View

How to do MTT for non-confluent cells?

Hi everyone, I'm doing MTT assay to test the cytotoxicity of 4 candidates on the BT-474 breast cancer cell line which rarely becomes confluent. started with 3K/well, 5K/well, 6.5K/well left the...

12 September 2020 3,034 8 View

How to calculate the crystallinity of cellulose film?

27 February 2021 2,753 4 View

What could be the reason for not having further low chi square value (better agreement) in my refinement result?

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

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

Why CHi^2 is reducing if I divide the intensity by a constant factor?

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

What is the optimal method to prepare a controlled porosity osmotic pump (CPOP) tablet for scanning electron microscopy?

In order to assess the shape and size of pores formed by dissolving the pore former in the semipermeable membrane structure, SEM images are needed. Cellulose acetate was used in the coating...

15 February 2021 6,135 3 View

How do I refine a specific region of my protein model so that it perfectly superposes with a template peptide PDB with the same sequence?

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

Is carboxymethyl cellulose a better electrolyte host polymer than methyl cellulose and cellulose acetate?

I want to prepare a cellulose-based biopolymer solid electrolyte by solution casting technique. However, choosing the right cellulose derivative has been my major challenge. Among the many factors...

30 January 2021 5,355 3 View

Is it possible to do Reitveld Refinement on single crystal XRD data?

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

How to take into account the high resolution of the x-ray difractometer?

At small angles or in case high collimation, the peaks become anisotropic and with a Lorentz addition. The resolution describes correctly only with adding Lorentz and anisatropy parameters. It...

26 January 2021 5,829 4 View

What is the mechanism or interaction between Fe3O4 magnetic nanoparticles and biochar?

Lately there are many studies on biochar incorporated/loaded/coated with Fe3O4 magnetic nanoparticles. But I havent found any paper that describes the interaction or bonding between the two. How...

20 January 2021 3,162 4 View