Why we do use reversed phase in HPLC?

09 October 2016 1,475 4 View

What is the function of saturated NH4Cl solution and brine in chalcone synthesis?

i'm synthesizing chalcone using condensation of 4-methylacetophenone and terepthaldialdehyde

07 August 2016 8,387 1 View

Why do we have to stirred acetophenone , ethanol and potassium hydroxide (KOH) under low temperature (0-3 degree celcius) in chalcone synthesis?

07 August 2016 336 2 View

Can we use fisher john to measure the melting point of compound that has it over 200 degree celcius?

04 May 2016 8,001 1 View

Does anybody know what plant has an oxadiazole compound in it?

if we have to isolate oxadiazole from plant

02 March 2016 7,205 1 View

Is it possible to get different fluorescent from same compound with different subtituent in TLC?

me and my friend synsthesizing 1,3,4-oxadiazole with different substituent (just the position actually, mine is ortho and my friend is para)

02 March 2016 9,577 1 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

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 to add missing citation?

Dear colleagues, I have found that many authors have a concern regarding their missing citation in RG because often citation in RG is lower than google scholars. I also missed some citation...

26 February 2021 928 6 View

Centrality measures computation in Biblioshiny/ Vosviewer?

26 February 2021 7,279 2 View

Can anyone share his experience regards Smoothing in origin?

I am working on TiO2 composite material and the results of XRD have a lot of small/junk peaks and while I apply a smooth filter in Origin then the other characteristics peaks disappear so anyone...

26 February 2021 8,183 3 View

How can we theoretically calculate Elemental analysis(percentage) of atoms in covalent organic framework?

For example in one research article the Elemental analysis values of COF-TpPa-1 ( Triformylphloroglucinol (Tp) (63 mg, 0.3 mmol), Paraphenylenediamine (Pa-1) (48 mg, 0.45 mmol) are as follows...

24 February 2021 1,265 6 View

How to Control Whiteflies in coconut leaves?

24 February 2021 1,005 1 View

Is it efficient to do liquid biopsy to investigate the gene expressions of the tumor?

To do liquid biopsy and look for specific gene expressions there are so many published papers. Thera are different protocols and procedures used to isolate circulating cell free RNA or mRNA from...

23 February 2021 7,326 5 View

What reaction will occur when adding hexamine into ammonium nitrate in an acidic medium?

Hello, I am investigating properties of water in oil emulsion explosives. And adding hexamine (hexamethylenetetramine) into one of the phases that are used to make the emulsion should increase the...

21 February 2021 8,680 1 View

How to get/count refractive index in gasses?

20 February 2021 8,202 6 View