Sandip Ghosh

Chang Gung University | CGU

I am here for specific answers or a list of investigation tools to determine the newly developed drugs/inhibitors/medicines.

Why does the response time of the photodetector change with the chopper frequency of incident illumination?

How does Doxycycline-an antibiotic, helps in the recovery process of Covid-19 positive patient?

What is the Electrical Conductance of Borophene (in e^2/h or Siemens)?

I am looking for a straight forwards application timeline (past 20 years) of major achievements in FRET applications.

This question is more based on technical insight of Plagiarism checker software. How could they detect a sentence that has the from another reported article? What are the criteria for sentences/statements are considered plagiarised? and how can plagiarism software know about it?

I am keen to explore, if there's any effect of Donor's Lifetime on its energy transfer ability to acceptor molecule, in FRET.

For example, if we have a donor of lifetime longer (I would say much longer) than the acceptor molecule, will this affect the energy transfer efficiency, making it low/high?

On the hand, if donor-acceptor conventionally have a similar magnitude of lifetime (say YFP/CFP, how high or low will be the energy transfer efficiency.

I am just a beginner in cell culture. I opt HeLa cells as the first.

As of now, I know, to culture any cells, we need media, antibiotics and many other reagents. However, depending on each cell type above mentioned reagent condition changes. For HeLa cells, what is the best reagent conditions is acceptable? I have found tons of document to learn from. Eventually, some are conflicting with each other. For example, some says DMEM (High Glucose, L-Glutamine)+10%FBS is suitable, Some says DMEM (High Glucose+Pyruvate) is suitable, and some says EMEM is suitable.

I would highly highly appreciate all your inputs, comes from your research experience and expertise.

N.B.: I will need HeLa cells for not to perform any core biological study but for Biomedical Imaging purpose.

I intend to start working on HeLa cells and I read online that, the doubling time of HeLa cells is ~20.67 hrs. But, meanwhile, I was told by a colleague of mine that when HeLa cells grows old (not sure if I am using the correct terminology- 'grow old' or old generation), need about 48 hrs to become double of its number. Why is it so?

I would appreciate all your answers.

Thank you!

We fabricated two Photoconductor type MoS2 based Photodetector device. In one we noticed Positive photoresponse and Negative photoresponse on the other. How to define and explain these two phenomena in terms of carrier movement or any other mechanism. Basically I would appreciate if anyone could explain the correct definition of positive and negative photoresponse in photodetector devices.

TIA.

Recently, I have investigated vibration modes in NaGdF4 nanocrystal, and I came across of some bands in the resulting spectrum , somewhere at ~250, 300, and 360 cm-1. Somehow, I could not able to find any references to quantify and back the analysis. I would be grateful, if anyone insight me with your great knowledge related to this situation.

Thanks in advance and hope to hear from someone soon.

Why the MoS2 single layer has the direct and larger band gap compare to its bulk counterparts, which has smaller but indirect band gap.

Oleic acid ligand on as prepared nanoparticles (dispersed in cyclohexane) has been exchanged by the citric acid ligand with -COOH terminated at its end and could be dispersed in water. I am just curious how these new ligands on the nanoparticles' surface will affect on lifetime (fluorescence), will it let the lifetime decrese or increase?

Hi everyone, 

I want to prepare following two different buffer with different pH stock (20 ml each). 

1. Citrate buffer (pH: 3, 4, 5, and 6)

2. Phosphate buffer (pH: 7, 8)

I would be grateful if someone provides me the direct protocol and chemical name to be used in order to prepare these mentioned buffers.

N.B: I am not expert in chemistry, the theory/equations behind the buffer chemistry would be much appreciated. 

Thank you in advance.