How could I purify PEG conjugated Products?

More Mohammed A. A. Abdullah's questions See All

How I could make a scattered graph for single cell analysis like this?

I want to know which software that could make a scattered graph like that?

07 August 2018 6,813 2 View

What is the cell tracker dye with the highest fluorescence?

We culture cells on a microchip with a membrane that has autofluorescence and after few hours the stained cells start fading I am searching for a cell tracker dye with strong intensity to make it...

09 October 2017 9,236 3 View

How could I measure the permeability of a membrane or the pore size?

I synthesized a membrane using a tri-acrylate and PEG and want to measure the pore size and to if this membrane will be permeable for different molecular weight dyes or not?

08 September 2017 7,722 1 View

What is the best condition for MD MB231 to migrate?

I am doing cell migration assay for MD MB231 on a microchip using collagen to coat the surface, cells look healthy and attached to the collagen but they don't show migration after 12 hrs. How...

08 September 2017 5,656 1 View

What is the effect of the base on tetrazine?

I want to make coupling reaction between a compound with carboxylic group and the aminethat have tetrazine. I used HATU and DIPEA for the coupling for overnight. I get three spots may be the...

05 June 2017 9,535 2 View

What is the stability of tetrazine in basic medium and acidic medium?

I want to know if the tetrazine is table or not in acidic or basic medium.

04 May 2017 977 0 View

How to make a chain of magnetic microbeads?

I want to make a chain from magnetic microbeads

11 December 2016 875 3 View

What is the mechanism of action of Carboplatin as anticancer?

I want to know the detailed mechanism of cis platin and carboplatin with references please

08 September 2016 2,098 2 View

What is the proximity effct in organic chemistry?

Proximity effect definition and example

08 September 2016 3,167 0 View

What is the difference between hydroxamic acid derivatives and carboxylic acid derivatives in metal chelation and chelation with metalloenzymes ?

I need references

01 February 2016 6,463 4 View

• What the possible Persistent Organic Pollutants and Heavy metals present in fluorspar, sediments, and water bodies around its mining area?

Approximate concentrations are require in compared with the WHO permissible limts

11 August 2024 2,723 1 View

Basis set and input instruction to calculate HOMO and LUMO using Orca for Imidazolium based organic salts?

Hey there, As a synthetic chemist delving into theoretical calculations for my imidazolium-based organic molecules, I would greatly appreciate any guidance on the appropriate input instructions...

09 August 2024 5,444 7 View

How to calculate CCS for Sodiated adduct ions and Multiply Charged Ions?

I'm currently working on calculating the collision cross section (CCS) for various ions, and I'm facing challenges when dealing with sodiated and multiply charged ions. Most of the resources I’ve...

08 August 2024 8,329 0 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

Determining the worth of a point improvement in Hamilton Depression Scale?

Dear readers, Thanks for your attention. I am wondering about the health economic problem of quantifying the value of interventions which a) prevent, b) improve symptom profile and c) ultimately...

05 August 2024 3,246 1 View

How to convert g/kg Humic acid dose to kg/ha?

I used humic acid at 0.044 g/kg soil in my pot experiment. But finally, I have to recommend kg/ha. Each pot's soil weight was 11 kg. What is the solution?

02 August 2024 7,186 6 View

Should I remove an item from a scale to raise Cronbach's alpha and McDonald's omega or is it better to leave it if they are both over .7 already?

Hello! I have this scale which had 10 items initially. I had to remove items 8 and 10 because they correlated negatively with the scale, and then I removed item 9 because Cronbach's alpha and...

01 August 2024 4,606 7 View

Why 3 replicates for most biological assays? Is it enough to examine the data fits normal distribution?

Just bounced on me. Before statistically analysing significant difference, shouldn't we see if data fits normal distribution first? Is 3 replicates enough to testify the hypothesis of normal...

31 July 2024 8,141 13 View

Posthoc test lettering in JAMOVI?

Does anyone know of a module for the JAMOVI software that is capable of generating mean separations using the classic letters based on post hoc results (e.g., Tukey test)? If, as I believe, such...

31 July 2024 3,333 4 View

Conjugation of PEG-Amine to an Amino Acid Using EDC?

I am attempting to conjugate PEG to an amino acid at the C-terminus, for the purposes of producing nanoparticles. I have been told that PEG modified with amine groups can be used for this purpose,...

31 July 2024 2,033 1 View