Can anyone help me to separate my phenolic compound in TLC with any new solvent system ?

My Compound is Leaf powdered Methanolic extract which is showing good phenolic compounds upon dipping in FeCl3. -My problem is phenolic compounds are not eluting with any common solvent system.

22 January 2021 4,693 7 View

G-mmpbsa- file error during one step calculation?

Hello, I am using the one-step approach from https://rashmikumari.github.io/g_mmpbsa/single_protein_ligand_binding_energy.html to calculate binding energy between protein and ligand. However, I...

09 December 2020 7,302 1 View

How should I design electrodes for electrical stimulation on hydrogel ?

I would like to design custom setup for delivering electrical stimulation to cells cultured on electroconductive hydrogels. I am thinking to use standard tissue culture well plates (12 or 6 well...

26 October 2020 1,099 2 View

Can any one help in finding exact focus area for conducting research on data analysis for smart grid applications?

What can be the area of focus? I request eminent researchers in the field to recommend the algorithms on data analysis for Smart Grid for better understanding. I request to consider open source...

02 September 2020 7,625 8 View

Is there any platform where one can complain if a reviewer of a journal makes an insult in his review?

If a reviewer of your article submitted to a journal makes an insult in his review, can the person formally complain about it anywhere?

19 May 2020 1,516 3 View

Can NMP solvent be used for the polymerization of acrylonitrile?

NMP: N-methyl-2-pyrrolidone Usually DMF (Dimethyl Formamide), DMSO (Dimethyl Sulfoxide) and ethylene carbonate have been used for polyacrylonitrile production. Is there any literature on the...

25 April 2020 5,305 15 View

Why Tetrafluoroboric acid diethyl ether complex (HBF4.Et2O) would be used over HCl for protonation in a 9:1 MeOH:H2O mixture?

Hi, I recently came across a paper where the authors protonated their molecule in ACN using HBF4.Et2O. My question is, if I had a solvent mixture of 90:10 MeOH:H2O, would the HBF4.Et2O acid work...

31 March 2020 7,752 3 View

What are the lastest testing facilities available for surface and sub surface analysis of a machined alloy component?

After machining an alloy using WEDM or any other non traditional machining processes, what kind of analysis can be performed for testing surface and sub surface conditions?

18 November 2019 8,470 4 View

Is ther any ready xls format to record the bibliometrics details?

I want to do content analysis of journals article for the same required to enter bibliometric details of articles and also references used in articles with bibliometric details ..is there any...

17 October 2019 5,606 2 View

How to conduct the accelerated storage study of foods?

We are working on the indigenous traditional foods and optimizing their shelf life. We need to know about the process of conducting the accelerated storage study of the foods.

08 September 2019 4,775 2 View

How to Eliminate cosine error and abbe error in LASER measurement system(for example Rhenishaw XL80)?

I like to do project in laser measurement system. My objective is to eliminate or reduce the cosine error, abbe error in Laser measurement system. I have Rhenishaw XL80 system. Please tell the...

28 February 2021 4,890 3 View

How can we limit artifacts caused by rotation in fiber photometry?

We are trying to run fiber photometry experiments for long time scales, but we get these sinusoidal artifacts that come up. We think they may be caused by twisting of the fiber optic subject...

25 February 2021 568 1 View

How to measure angle between laser travel path and machine axis in Laser Measurement system?

25 February 2021 1,987 3 View

How can I simulate the optical absorption spectrum of a biomaterial (like DNA or protein) in COMSOL?

I need to simulate the optical properties of a biomaterial, namely DNA, in COMSOL. Basically I need to simulate the IR absorption spectrum of a cylinder filled with a 'concentration' of DNA. I am...

21 February 2021 3,043 3 View

What is the reason of the received optical signal to be slimmed down in multi-mode fiber?

What is the reason of the received optical signal to be slimmed down in multi-mode fiber? I have 4 km multi-mode fiber

03 February 2021 1,105 10 View

Why it is not permissible to correct all 5 classical optical aberration (spherical, chromatic, coma, astigmatism, curvature of field) simultaneously?

When first order paraxial optics is expanded to third order optics (i.e. sin x~ x-x3/3! instead of sin x~x) , these 5 optical aberrations result in. What is the rigorous mathematical proof that,...

26 January 2021 8,666 4 View

Difference between Second-harmonic generation and Two-photon absorption?

Hello Dear Researchers, I am confused about the Difference between Second-harmonic generation and Two-photon absorption? Can anyone describe the two phenomena briefly in the physical picture? What...

24 January 2021 9,912 5 View

Is it possible that the single-pass absorption exceeds 50%?

Dear researchers It's well-known that the maximum light absorption of any structure can not be greater than 50%. Is it possible that the single-pass absorption exceeds 50%? How?

17 January 2021 2,335 7 View

What can cause laser beam polarisation fluctuations?

Dear colleagues, We have observed large fluctuations in laser power in our setup and traced them down to fluctuations in laser beam polarisation. Attached is a schematic of the relevant part of...

14 January 2021 7,505 4 View

How an unusual visual effect at the Monte Carlo casino can be obtained?

At the Monte Carlo casino, I saw an unusual advertising image. It rotated around a vertical axis and seemed suspended in the air; there was no screen behind it. The image was bright and colorful....

03 January 2021 9,119 5 View