How to estimate interrater-reliability of a variable with 3 columns of answer?

Hello everyone, In my study, I asked participants to write 3 different memories. After collecting data, 2 raters coded these memories. Now I have 3 columns for the first rater and 3 columns for...

06 February 2021 7,463 8 View

Ion exchange vs Size exclusion chromatography based on yield and purify?

What is differences between ion exchange and size exclusion chromatography based on yield and purify. Which one has higher purity/yield and reliable?

18 April 2020 3,893 5 View

Can anyone recomment a paper or explain the working principles of the multi-channel electrode assay (MEA, Multi Channel System) for neuronal activity?

I was unfortunate to find a paper where the working principle of the MEA technology is explained. How does it do the measurements? How the electrodes getting the signal and convert it to voltage?...

07 February 2020 984 1 View

What are the main criteria to evaluate an exploration project's success?

How should an exploration project be evaluated as successful or unsuccessful? What are the main criteria? Exploration of an unknown deposit based on recent protocols or standards (such as JORC or...

28 December 2019 460 19 View

How to perform a PCR reaction on PFA fixed tissue whole zebra fish embryo??

Dear Colleagues, I am currently having difficulties with my PCR reaction from pre- stained PFA fixed zebrafish embryos. I had to stained the embryos and then needed to perform a PCR reaction...

02 April 2018 1,835 3 View

Could anybody help me to find the best vector in order to get transient transfection into the human fibroblast?

17 September 2014 9,220 4 View

Is there any possibility that Oct4 can be detected in human skin fibroblast cells nuclei by immunostaining?

13 July 2014 5,716 8 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 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

Should we change media after1st 6hrs after plating HUVEC bought from INVITROGEN?it's not recomended by invitrogen.Will DMSO present in stock matter?

We have HUVEC bought from Invitrogen. Cat no -C-003-5c. while first plating the cells we have bought the protocol suggests not to centrifuge the cell with media to remove the DMSO. Should we...

02 March 2021 3,713 2 View

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

How can extract ciprofloxacin hydrochloride disolve in water er to organic solvent such as dichloromethan or any other solvent?

I need a procedure to extract the ciprofloxacin hydrochloride from aqueous solution by using dichloromethane in detail,. I thank you very much.

01 March 2021 4,306 1 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

How to make fractions of chloroform extract of plant, using seperating funnel?

28 February 2021 8,466 2 View

Bought HUVEC from Invitrgen.need to revive it.expected it is cryofreezed in DMSO.Do I need to remove the DMSO for plating the cell for the 1st time?

After I cryofreeze the cell do I need to remove the DMSO for culturing the cell for next passages .

28 February 2021 7,738 3 View

POlymer+DMSO solution and moisture??

What could be the reason of moisture at the sides of Vial when I am preparing my polmyer+DMSO solution for membrane fabrication? What etiquettes I am possibly missing here?

28 February 2021 6,516 5 View

Why am i not getting solid after reacting APTES with salicylaldehyde?

The reaction of APTES with salicylaldehyde in ethanol leads to the formation of imine compound yellow solid which is mention in literature, but I am not getting yellow solid I don't know why? when...

28 February 2021 2,955 2 View