Fereshteh Amini

5 Questions 8 Answers 0 Followers

Questions related from Fereshteh Amini

How to perform electrophoresis at low concentrations?

Could you please guide me about the protocol for conducting electrophoresis at very low concentrations of DNA (below 1 ng/ul)? I did electrophoresis with two percent agarose gel (+1ul safe stain)...

02 November 2024 2,551 3 View

Why a new peak has appeared in the spectrum after dye adsorption?

Why after the adsorption of methyl orange dye by my adsorbent, in addition to the color peak in 464 nm, another peak has appeared in 372nm n in theuv-vis spectrum. It should be noted that this...

11 March 2024 4,283 2 View

How to dry polyethyleneimine coated Fe3O4 nanoparticles?

Hi all, I have synthesized polyethyleneimine coated Fe3O4 nanoparticles, before drying, the nanoparticles showed positive zeta potential, but after drying in the oven at 40 C , the measured zeta...

15 July 2023 7,097 3 View

Why electrospraying happens along with electrospinning of polycaprolactone?

Why along with polycaprolactone electrospinning, I also see electrospraying in the optical microscope images of nanofibers mat. The feeding rate, voltage and tip-to-collector distance have been...

17 June 2023 8,261 6 View

What is your advise for electrospinning PA66 with molecular weight 30000 g/mol for obtaining the uniform fiber diameter?

I electrospinned PA66 with acid formic as a solvent, but I could not reach to uniform fiber diameter. I've changed a voltage, a feeding rate and a distance many times. Do you know about the...

26 September 2014 8,910 6 View