Ayman S ELmezayyen

9 Questions 14 Answers 0 Followers

Questions related from Ayman S ELmezayyen

Which is the best solvent for DNA (Deoxyribonucleic acid-Cellulose double-stranded from Calf Thymus)?

one more question, at what condition DNA can be denatured? Thanks in advance

06 June 2019 1,749 4 View

How can I separate polymer nanoparticles from the ethylene glycol?

i have prepared polymer nanoparticles in ethylene glycol soln. but i have a problem i can't separate it. i used centrifuge and vacuum filtration, but no way to separation.

01 January 1970 2,870 8 View

How can I exactly determine the type of Cu2O semiconductor through the mott-shottcky?

What is the instrument and the conditions required to to this measurement? Thank you.

01 January 1970 9,454 1 View

How to eliminate the thickness effect ?

how to eliminate the effect of the samples thickness on the intensity of XRD versus 2 theta to have the ability to compare between the samples that have different weight of metal oxide nanoparticle ?

01 January 1970 6,399 3 View

What are the dispersion medium and solvents of PMMA?

I prepared a PMMA nano-sphere and I want to disperse it in polymer matrix. I found that it disperses in water, but it gives a clear solution in DMSO. Does this mean that it dissolves in DMSO? I...

01 January 1970 1,379 11 View

Does the electrical resistance of the substrate have an effect on the morphology of the deposited film?

What happen if I use two substrates with different resistances for vapor deposit on metal. Is there a relation to growth or seeding density ?

01 January 1970 435 12 View

Do DMF, NMP, and DMSO dissolve in PMMA Nanosphere?

I mean, if I add PMMA nansphere to DMSO and get a clear solution, 1: Does this mean that it dissolved? 2: If yes, does this mean that it did not become a nanosphere?

01 January 1970 4,901 1 View

What is the dispersion medium and the solvents of PMMA ?

i prepare PMMA nano-sphere and i want to disperse it in polymer matrix, i find it dispersed in water, but it give clear solution in DMSO. this mean that it dissolve in DMSO ? add to your...

01 January 1970 2,485 0 View

How can I determine the mott-schottky using potentiostat work station?

I prepared n type semiconductor using electrochemical method and I need to determine the photochemical properties.

01 January 1970 6,289 1 View