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 optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 2 View

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01 March 2021 3,905 5 View

What test should I use to compare two or three means, if data is not normally distributed but sample size is > 30 in each group?

I personally feel this as a most confusing question. As per my understanding, if sample size is > 30, and sample is skewed, we can still use paramteric approach, as it will follow Z...

01 March 2021 1,587 6 View

Is it necessary to report effect size (ES) in statistics of biomedical research given that we already report p values routinely?

Pls share your thoughts

01 March 2021 7,330 4 View

Why there are two peaks while using the mie plot of Silver nanoparticle?

Hi, I am trying to learn the theoretical modelling of silver nanoparticle using the Mie scattering theory. After that, I discovered a software named Mieplot developed by Philip Laven, where it...

25 February 2021 7,493 6 View

How to calculate Z (the number of molecules in a unit cell) for calculating theoretical density?

I am trying to calculate the theoretical density of my ceramics materials. I use the formula below to calculate the theoretical density: Theoretical density = (Molecular weight x No. of molecules...

24 February 2021 3,823 2 View

How to handle studies which report perfect effect sizes in a meta-analysis using Pearson's r?

I'm in the process of updating a meta-analysis and in one of the new studies, effect sizes are reported as Tau-U. Two of the effect sizes are reported as Tau-U = 1.00. I am using Andy Field's...

24 February 2021 2,265 3 View

Sample size determination for non-parametric tests?

How do I run a a priori sample size determination for non-parametric tests, like the Mann-Whitney U-test and the Kruskall-Wallis or other non-parametric tests that accord with the unpaired t-test...

24 February 2021 166 6 View

How to determine a priori sample size for t-test with unequal means?

I need to conduct a a priori sample size determinations for t-test with unequal means, but I don't know the sizes of the groups nor the ratio of both groups... Can I do a sample size determination...

24 February 2021 8,289 3 View

Can the problems of overfitting be solved without cross validation?

For an overfit data set the cross validation error will be much bigger than the training error. Is it true or false?

23 February 2021 3,616 2 View