As both 4-nitrobiphenyl and 4-nitrobromobenzene has same polarity and both has a same Rf value in hexane and any other solvent, how can i separate? kindly help.
En suivant toutes les étapes mentionnées sur (ajouter une recherche) il me signale erreur, ressayer, j'ai essayé plusieurs fois, sans succès, toujours il me signal erreur, ressayer
02 August 2024 9,719 1 View
As one can read in numerous papers on this matter, the dislocation density is derived from the dependence of peak broadening on the diffraction angle, that is, on considered reflections. Thus, to...
28 July 2024 6,496 5 View
Hi everyone, I am working on a curved domain in which a ship is situated in the middle (geometry is given below). In my understanding the general fluid flow is parallel to the x axis from inlet to...
25 July 2024 9,058 4 View
I have been looking for the principle of Cysteine-carbazole-sulfuric acid reaction in research papers and books, but couldn't find it. This reaction is mainly used for the quantification of...
23 July 2024 3,891 0 View
with secondary data collected from central bank to know the impact of digitalization in banks profitability, how can its impact be more precisely measured through econometric tools.
21 July 2024 7,295 10 View
Hi everyone, I am working on a simulation involving restricted canal with ship using DFBI. I am facing reversed flow in my outlet boundaries as the DFBI is released (In 1.25s). Is there any...
17 July 2024 7,032 1 View
I try to understand the ESP mechanism working. What kind of sensors it has, Is it necessary to modify or boost its mechanical ?
15 July 2024 4,772 1 View
Mangroves were reported to eat into limestone atolls like so much cake - but could it have been diatom partnerships at mangrove roots that ate into the rock? If gypsum formation is a clue, how...
12 July 2024 159 2 View
As flaviviruses genome is very frequently prone to mutation hence it is very difficult to clone whole genome inside vector what kind of vector and cells can sustain such amount of cloning...
11 July 2024 4,284 0 View
I am working on cloning of a gene fragment inside my vector everything we tried to do correctly like making insert and vector with utmost care but after ligation the morphology of colonies seems...
11 July 2024 9,010 3 View
I need to do some experiment with it in liquid form.
07 August 2024 613 3 View
I work on MCF7 cell cell for anticaner purpose and I wa to do drug preperation the drug ( secondary metabolites extracted from Aspergillus) My question which solvent is better with these secodary...
03 August 2024 4,725 2 View
If you think of electrons with spin as bar magnets, you know bar magnets of opposite polarity as long as they're not occupying the same spatial location don't cancel out each other's magnetic...
03 August 2024 3,927 2 View
Hello everyone, I need to dissolve stigmasterol for an animal experiment, but it hasn't dissolved in either DMSO or vegetable oil. Can anyone recommend the best solvent for stigmasterol?
01 August 2024 7,504 2 View
Why methanol and sulphuric acid, used in the analysis of polyhydroxyalkanoates (PHA) methyl esters by GC-MS? Additionally, why do we typically use non-polar solvents in GC-MS?
22 July 2024 1,210 2 View
Is it the best optimization ratio based on experiments?
22 July 2024 8,170 0 View
If you don't understand my question let me know
21 July 2024 563 1 View
I used several solvents and measured the absorbency and determined the total phenolic content, but the results were similar after dropping them on the titration curve; What is the reason, please help
17 July 2024 5,151 5 View
Hello everyone, I am facing a consistent issue in my NMR spectra with an unwanted peak appearing at 1.25 ppm. This peak seems to vary with the amount of sample: it becomes more pronounced with...
15 July 2024 9,065 4 View
I synthesised a nanocarrier by conjugation MOF (MIL-100) with folic acid for use in chemotherapy but the samples didn't dissolve completely in aqueous solution or DMSO. Instead, they only...
15 July 2024 2,414 1 View