A film coverage that allows for transmittance of wavelengths on the infrared scale?

I've landed on needing some type of highly optically transparent film or cover material that prevents evaporation of culture media; I am not sure which subfield of materials science would be able...

08 February 2021 5,760 1 View

What reliable assessment methodologies can teachers employ to evaluate student's individual learning performance?

With Covid-19 pandemic, schools are compelled to carry out online teaching. However, the teaching-learning process is incomplete without assessing the individual learning performance of the...

16 August 2020 413 5 View

Best frailty assesment tool for busy surgical practice?

We currently are trying to implement edmonton scale. However, this does reuqire some time and designated resources. Any other suggestions for a good validated instrument with ease of use and not...

18 May 2020 6,359 1 View

How to order a packaged lentiviral particle with gene of interest?

This question feels too stupid to ask but ... I have a plasmid that is available commercially but I would like to add a selection marker. I've constucted the plasmid but I am in a time crunch and...

12 March 2020 631 2 View

AGGLOMERATIVE clustering interpretation?

Have a hierarchical agglomerative clustering analysis for samples from different years. Samples from different years are rather clustering together instead of with samples from same year. This is...

28 December 2019 1,942 1 View

In percentage wise, how efficacious are sulfadoxine-pyrimethamine (SP, used as IPTp) and ITNs, as interventions against malaria?

Dear All, Kindly, share with me any resources and/or knowledge and experiences regarding studies measuring the efficacy of SP and insecticide treated net, either as independent or combined as...

11 July 2019 3,564 3 View

Qualitative Research Methodology - recommend best practice per scenario below?

Dear All, kindly spare some few minutes of your time to share your technical expertise with me to clarify a research methodological challenge (see below) Preamble: You intend to conduct a...

11 March 2019 1,624 7 View

Which big theme strikes you as the most defining issue of 2018 ?

Dear colleagues, We are soon wrapping up year 2018. In 2018 we witnessed several novel issues, but also a lot of the same old problems (climate change, inequality, political instability,...

18 December 2018 692 7 View

Can one conduct a data normality check via SmartPLS 3.0?

10 April 2017 4,991 6 View

What is the secret to good immunofluorescent S100B labelling?

We have got very good DAB labelling using Sigma monoclonal directed towards S100B in the rat but our immunofluorescence is rubbish. We've run to serial dilutions using the antibody ranging from...

18 September 2013 3,133 1 View

What solvent can I used for Paal Knorr reaction between 6-amino hexanoic acid and 2.5 hexanedione?

I am try to make the Paal Knorr reaction between 2.5 hexnedione and 6-amino hexanoic acid, my problem is type of solvent to use, because 6-hexaminohexanoic acid is soluble in water but I am not...

02 March 2021 4,443 2 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

How to replicate the well conditions of a crystal hit with 20%(w/v) isopropanol?

I had a crystal hit in a well with 0.1M HEPEs pH 7.5, 10%(w/v) PEG 4000, and 20%(w/v) isopropanol. Why is isopropanol in w/v here if it's just solvent? How do I recreate this well condition?

25 February 2021 9,761 1 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