How to validate and test reliability of a new questionnaire for medical research?

I wanted to do a questionnaire based study and would like to learn how to test validity and reliability of the newly prepared questionnnaire. Kindly provide your valuable inputs.

11 June 2020 2,538 11 View

Is it possible to migrate the instances running on one virtual machine to another virtual machine?

My Research topic is on virtual machine migration and consolidation in cloud data centers. now i am thinking is it possible to migrate only the instances running on Virtual machine instead of the...

13 February 2020 9,561 1 View

Which is the most suitable cell lines to study TGFb induced Epithelial to mesenchymal transition(EMT)?

I am planning to find the Hub protein using protien-protein interaction through in-sillico apporach. For that which is the most suitable cell lines(tumor).

24 August 2016 9,482 10 View

What is the extraction and analysis method for Florasulam in soil?

The extraction solvent and chromatographic conditions will be very helpful.

29 October 2015 2,729 1 View

Can anyone suggest an optimum power and deposition time for sputtering Gd2O3 thin films of about 100nm thickness?

We are using 63 watts (2 inch cathode), 30 mins deposition gives 10 nm film.

18 August 2012 7,546 6 View

Dr I worked with radio isotpes with mass spectroscopy but I could not able to continue. I have some QPC samples. Is it possible to help to analise?

Dr I worked with radio isotpes with mass spectroscopy but I could not able to continue. I have some QPC samples. Is it possible to help to analise few samples?

01 January 1970 7,323 3 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

No title

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

Do you need the CMV enhancer before the CMV promotor for a proper function of CMV on the gene that follows?

I'm a student and I have to produce a cell line with a knockin for the NRF2 gene with GFP. I have to put a promotor in front of the GFP because the gene will be too far away from the promotor of...

28 February 2021 7,127 2 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