What the best column HPLC, C18, C8, or silica for analysis cholesterol?

More Naser Jawad Kadhum's questions See All

Can anyone support me and discussion the agilent HPLC operation ?

I would like to exchange the information and skill about Agilent HPLC apparatus

06 July 2019 8,129 7 View

What the suitable protocol to analysis the solvent like methanol of acetic acid (organic acid)?

What the suitable protocol to analysis the solvent like methanol of acetic acid (organic acid)? Can I detect the concentration of residue methanol by HPLC?

06 July 2019 1,496 3 View

Cytochrome P450 evaluation?

what the best procedure to detect the activity of p450 of mice?

08 September 2018 2,211 0 View

What the best and easily method to prepare liposome nanoparticles?

what?

02 March 2018 9,676 0 View

Why does cytochrome remove the effect or modulate drugs by oxidation of free radicals that also have effects?

Why does cytochrome remove the effect or modulate drugs by oxidation of free radicals that also have effects? glotathione then performs an antioxidant process by reducing drugs ACTION glotathione...

01 January 1970 8,788 5 View

What the modren stem cell application

The key properties of a stem cell were first defined by Ernest McCulloch and James Till in the early 1960s. They discovered the blood-forming stem cell, the hematopoietic stem cell (HSC), through...

01 January 1970 3,445 24 View

What the best solvent to remove the oil from herbs extract after extraction?

sometime we see an oil with the extrac Although polarity solvents are used.

01 January 1970 5,650 8 View

Which type of compound does lamda max of 218 indicate in a uv-vis spectrum of a partially purified compound through column and TLC?

A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...

11 August 2024 9,801 2 View

Can you connect an HPLC to a Mass Spec only at a certain time point?

Can anyone explain this method? Especially the last statement where it says only at 1.5 to 2.5mins was the MS/MS connected to the UPLC. How is that possible, is it a feature in this specific...

11 August 2024 8,141 3 View

GC-MS retention index prediticon?

Hello experts, Does anyone know any free software about retention index prediction ?

08 August 2024 7,403 2 View

RNA Extraction Using Hot Borate Method No Longer Working?

I've been performing RNA extraction on cotton petiole tissue for a few months now using the method described in the following paper, a derivative of the typical hot borate method...

08 August 2024 9,882 2 View

Can I use a HisTRAP column for affinity chromatography?

I'm working on selecting antibodies against a recombinant protein that has a His-tag. My idea is to first bind the recombinant protein to a HisTRAP column and then use this column for an affinity...

07 August 2024 505 3 View

Separation of organic acids-HPLC?

Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.

07 August 2024 8,782 3 View

Why is electronic energy 0.000 for liquid crystal compounds and is invariable with temperature in Guassian 09 software?

Are there any suggestions or insights you can provide to help address this problem

06 August 2024 1,443 2 View

Hi, please what is the best tool on Aspen plus that can help me get the best inlet temperature and pressure for cryogenic distillation?

I am trying to recover liquid CO2 from a mixture of 0.6 CO2, 0.3 N2, and 0.1 O2. My aim is to recover about 99% liquid CO2 at the bottom of the column and make sure the amount of gaseous CO2...

06 August 2024 4,611 0 View

RNA later for the preservation of RNA in fecal samples at room temperature for one day (37°C)?

I am planning to collect human fecal samples for metatranscriptomic analysis using MGI. These samples are from indigenous people living in a region with high temperatures. I will have access to a...

06 August 2024 1,367 3 View

How can we use mobile apps for improving students' academic performance?

Mobile apps can be a powerful tool for enhancing academic performance, how can we use mobile apps for improving academic performance

04 August 2024 9,492 0 View