Sandip Pal

14 Questions 14 Answers 0 Followers

Questions related from Sandip Pal

What's the difference between sp. accumulation and rarefaction curve?

I've searched and got few info about these but those info unable to clear my concept! Can anyone help me to provide crystal clear concept?

12 December 2019 10,126 3 View

How can we calculate UV light intensity or its dose?

We use simple UV lamp (UV-C) to irradiate an insect. Is there any other source we can use? How to control the radiation dose? Please mention the source of UV-B.

02 February 2018 6,788 4 View

Seek your suggestion.

Can anyone suggest me some research work/idea in interdisciplinary area including Ecology and Biophysical Chemistry?

07 July 2017 4,012 3 View

Can anyone help with a problem regarding the preparation of polymer nanoparticles?

I'm preparing a drug loaded polymeric nanoparticle. Can anyone tell me how to add a solution of hydrophobic drug+PLGA+acetone into a 2% solution of PVA with a syringe? What measure should I take...

05 May 2014 4,829 2 View

Is measuring diameter in DLS concentration dependent of the sample?

A number of times I observed that the diameter varies with the concentration of the sample while measuring hydrodynamic diameter of a sample by DLS technique. Could someone explain the phenomenon?

12 December 2013 4,866 3 View

How to save our home: our Planet?

Today we need to think about our planet earth. As we know "Charity begins at home". So, being an individual how can we locally participate and act effectively to save our planet? This is an open...

08 August 2013 6,498 10 View

In which medium/solvent it is better to dissolve Epigallocatechin gallate (EGCG)?

Please suggest me a solvent in which I can dissolve EGCG? Is it soluble in water?

08 August 2013 4,935 10 View

Does anyone have experience with excitation wavelength of EGCG?

I want to observe the emission spectra of the flavonoid, EGCG in flurimeter.

07 July 2013 934 1 View

Can anyone help me to identify these nanoparticles?

I'm working on polymer based nanoparticles. They are generally round in shape as evident from SEM results. Last week I got few perfectly 'triangular shaped' particles along with so called polymer...

07 July 2013 2,821 27 View

How to get polymer nanoparticles in pure powdered form after lyophilization?

I'm currently engaged in preparing a drug loaded polymeric nanoparticle. Is it difficult to get final lyophilized polymer nanoparticles in "powdered" form? If yes, what would be the possible...

07 July 2013 1,065 4 View

How to prepare samples for TEM?

I would like to do TEM for my polymeric nanoparticles. How can I prepare samples for TEM analysis? All types of suggestions welcome.

07 July 2013 8,464 1 View

EDC-NHS Coupling?

Can anyone explain me the EDC-NHS coupling mechanism?

06 June 2013 4,105 37 View

What is the difference between polymer nanoparticles 'before dialysis' and same 'after dialysis'?

I've synthesized a drug loaded polymer nanoparticle, dialyzed it, and compared it with non-dialyzed one. I found non-dialyzed one is more sticky than dialyzed one after lyophilization. Is it true?...

06 June 2013 5,799 5 View

Catechin (polyphenol) loaded polymeric nanoparticle preparation.

Can anyone suggest me a good way to prepare catechin (e.g. EGCG) loaded polymeric (e.g. PLGA) nanoparticle? Also please tell me about the problems that may arise during nanoparticle preparation.

05 May 2013 2,171 0 View