Dear all colleagues, Could you please tell me a reference for electron spin resonance (ESR) tubes which are used for performing ESR with high dielectric constant solvents? Thank you.
Dear all, Does there anyone know how to configure the HPLC system? Our Waters HPLC instruments (Waters pump 1525 and PDA 2998) don't occur in the list of Waters DHCP server configuration even we...
31 December 2019 4,613 2 View
Dear all, Does anyone can tell me why as using a capillary or a flat glass cell, we could perform electron spin resonance (ESR) experiment with polar solvents of high dielectric constant, even a...
03 April 2018 5,994 0 View
Hello, can anyone tell me that the 1,6-Hexanediol Di-(endo, exo-norborn-2-ene-5-carboxylate) which was synthesized from 1,6-hexanediol diacrylate and cyclopentadiene via Diels-Alder reaction is...
31 December 2016 4,221 6 View
I need to do some experiment with it in liquid form.
07 August 2024 613 3 View
I am not able to get good literature and the physics behind how first these grains and grain boundaries arises out of no where when we make a pellet to study its dielectric properties and then how...
07 August 2024 5,177 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
Hello everyone, I am new to this characterization but watching videos on youtube I have already plotted a Nyquist plot (Z' and -Z'') and already fitted models on my material using Zsim. But now I...
29 July 2024 1,376 0 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