Why Negative peak eluted in HPLC analysis?

I'facing problem while doing HPLC analysis due to negative peak was eluted which was corresponding to the principle peak RT. I tried to remove, with different solvents, but no use. i want to know...

26 November 2020 1,960 5 View

Can anyone please tell how to define link for Tuned mass Dampers using Sap2000/Etabs?

Dear Research scholars, I was doing my MTech thesis on pendulum based TMD and I was having trouble defining the link properties. I even followed the tutorials put on CSI website. still, I wasn't...

11 November 2020 8,309 11 View

How to solve "cz freeze python error in main script" Acp in Ansys probelm?

Greetings, I'm currently using the ANSYS 2020R1 crack version. I used this software for at least one month smoothly. But in the last few days, I'm facing this problem. I'm tired to solve this...

09 November 2020 6,431 2 View

What is the suitable optical filter for filtering 120MHz spacing combs from mode-locked laser for f-2f interferometry?

how to do f-2f interferometry from an octave spanning supercontinnum with frequency spacing 120MHz. Which would be the most suitable optical filter in this range for filtering f and 2f components...

12 October 2020 4,470 1 View

How we can design hybrid system between deep learning and swarm intelligence system or deep learning with fuzz?

Hybride intelligent system is good techniques used for solving diffrent optomization problems. Like classification, recognition ....etc Deep learning can be used with and hybrid with other machine...

08 October 2020 4,943 3 View

Why not there is common reference citation format for all journals?

Why not there is common reference citation format for all journals?

03 October 2020 8,137 3 View

Which force field should be used to simulate protein-protein complex in gromacs?

Hi, I have done a protein-protein docking. Now I want to perform MD in gromacs. I am confused with forcefields. When I tried to findout, everywhere it is written for protein-ligand but I couldn't...

29 September 2020 1,410 3 View

Anyone knows a reliable service who can run my data for me?

Please, if you know such a person or service, kindly email me the contact. I am looking for a reliable service to help me with my data set analyses. Thank you, Y. Essounga: [email protected]

23 September 2020 2,080 3 View

How authentic is this conference, https://www.scientificresearchers.org/icbe-8?fbclid=IwAR2_kI2DGxq7Hlc-Be6gIZKrwgXvjqg2Q5FT2SmIo2yiQecWAcMDpl7GZS0?

Good day, I just to want whether the above conference is a fake or not Regards

17 September 2020 3,912 7 View

Is it possible to run a doped system in CASTEP without creating supercell structure?

I was run a doped system in CASTEP without supercell and it was successfully optimized. But, I am not fully understood when I have to create a supercell. The unit cell I had used contain 28...

06 July 2020 7,657 2 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

Chlorinated organic formation in odor control scrubbers using hypochlorite?

I'm involved in a study of odor control technologies for municipal wastewater treatment plant. One of the control options involves a chemical 2-stage (acid/alkaline) packed bed scrubber. The...

03 March 2021 3,661 2 View

What solvent can I used for Paal Knorr reaction between 6-amino hexanoic acid and 2.5 hexanedione?

I am try to make the Paal Knorr reaction between 2.5 hexnedione and 6-amino hexanoic acid, my problem is type of solvent to use, because 6-hexaminohexanoic acid is soluble in water but I am not...

02 March 2021 4,443 2 View

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

How can extract ciprofloxacin hydrochloride disolve in water er to organic solvent such as dichloromethan or any other solvent?

I need a procedure to extract the ciprofloxacin hydrochloride from aqueous solution by using dichloromethane in detail,. I thank you very much.

01 March 2021 4,306 1 View

Can chitosan alone can act as a reducing agent for Cu(0) nanoparticle sythesis?

[Synthesizing Cu nanoparticles without using chemical reductants]

01 March 2021 8,359 1 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

How to make fractions of chloroform extract of plant, using seperating funnel?

28 February 2021 8,466 2 View

Why am i not getting solid after reacting APTES with salicylaldehyde?

The reaction of APTES with salicylaldehyde in ethanol leads to the formation of imine compound yellow solid which is mention in literature, but I am not getting yellow solid I don't know why? when...

28 February 2021 2,955 2 View