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Questions related from Amr Mahmoud
Could please anyone explains to me how to apply Diffey equation to get SPF value?
08 April 2021 5,784 1 View
I prepared Zinc Oxide following a protocol to get size larger than 100 nm , using 1M zinc acetate and 1M sodium hydroxide at 30 degree, but I got 5 nm particles , why ?
26 January 2021 6,095 5 View
I could not synthesize Selenium nanoparticles by PEG 200 at up-scale ( more than 100 ml) as it got aggregated while at small amounts it works fine , I work with 850 PPM using selenium powder in...
09 January 2021 10,420 1 View
If I'm trying to coat ZnO nanoparticles with Silica, how to know how much of ZnO is coated? (coating efficiency)
30 July 2020 2,288 13 View
If I want a certain antioxidant in a formulation to be penetrated into the skin , Is it ok to load it into ethosomes or the loading means that the whole package will be delivered ?
13 November 2019 8,300 1 View
I'm a Research associate at 57357 hospital , Egypt , I would like to ask about two cell lines : RD , RH30 ( Rahbdomyosarcoma ) we couldn't find them in Egypt and we are committed to certain...
27 March 2019 1,252 4 View
what is the best protocol to culture lymph node from fresh tissue sample ? best media , best serum concentration , any other additives to be added ?
26 March 2019 1,979 4 View
Does FBS free exosome inactivate trypsin as same as the standard FBS or inactivation is not related to exosomes ?
30 January 2019 9,502 3 View
green silver NP can be more toxic than chemical NP in certain cell line ? (HEK293 )
05 May 2018 4,595 3 View
is there a protocol that can be repeated with same result ? as i used these two protocols, with no hopeful results , aspect ratio 3.7 ,...
03 December 2017 1,265 0 View
