Shohag Chandra Das

6 Questions 1 Answers 0 Followers

Questions related from Shohag Chandra Das

Why do I get minor electric shock in my laboratory when touch something metallic?

Sometimes when I touch my colleague or metal bodies. i fell shock with some minor electric sound.

28 February 2024 1,166 3 View

Why does the transmittance % in FTIR become more than 100% (Opposite direction)?

I did FTIR of a reactive dye's powder. But I see that the transmittance of 3 peaks went opposite direction of normal peaks and eventually the transmittance percentage became more than 100%. What...

18 December 2023 7,064 2 View

How would I apply band aid to mice for vivo analysis?

We have made an telcel composite bandage for wound healing and planned for histology analysis on mice. But the treated fabric does not attach on the mice body even with micropore tape. Can...

09 August 2023 1,711 1 View

Should a substance be antimicrobial sensitive to both gram positive and gram negative bacteria to be antimicrobial? Or it is ok with only one?

A sample showed positive result for gram positive bacteria but negative result for gram negative bacteria. Should I take it as antimicrobial agent??

24 January 2023 285 7 View

How can the unknown concentration of sodium sulfide (Na2S) be measured by titration? Which one is the appropriate indicator for that?

As sodium sulfide is a reducing agent so we need an oxiding agent for redox titration. But which oxidizing agent is the most appropriate for that?

20 June 2022 2,676 1 View

Can a substance be cytotoxic and mutagenic at a time as cytotoxic means cell death where mutagenic means cell increase?

let me know details of the mechanism also

15 February 2022 8,148 3 View