Is there any graph to determine the membrane pore size based on its BSA rejection percent?

Dear researchers, It is clear that BSA protein is the most common solute for membrane performance examination. However, there is no reference to check the MWCO of the membranes based on BSA...

29 April 2020 6,148 3 View

Can DMAc, NMP, DMF, TEP, DMSO, Formamide, Acetone, as organic solvents, dissolve a few drops of an oil?

Dear researchers, The mentioned solvents are organic solvents and it is thought that they can dissolve the oils. If they are not capable to do this, what is the reason? Regards DMAc:...

25 February 2020 140 2 View

EEG connectivity calculation via HERMES toolbox ?

Hello everyone I am currently trying to calculate phase lock value for my EEG data with the help of the HERMES toolbox in Matlab. I have a total of 48 subjects with different channel location...

04 January 2020 5,220 1 View

How can we calculate the amount of residual non-solvent (pore-former) additives in the membranes?

Dear researcher, We all use the non-solvent additives to improve the structure and performance of the polymeric membranes. However, the non-solvent additives can be easily washed out quickly with...

29 December 2019 5,366 1 View

What is the software that is used for adjusting and labeling the images for journal articles?

Dear researchers, I want to put my SEM photos together to have a picture like the attached photos for my article. Could you please guide me what is the software that I can use? Regards

16 December 2019 4,165 12 View

Which laboratories or institutes in Iran are able to determine estrogen hormone concentrations?

Dear researchers, I want to determine the estrogen hormone concentration in water. Where is the special laboratory to do this in Iran? Could you please guide me? Best regards

11 December 2019 2,829 2 View

What are these white bubbles on the surface of the SEM micrographs?

Dear researchers, There are some white bubbles on the surface of the SEM micrographs. What are these particles? Kind regards Foroogh

25 November 2019 5,365 3 View

How to make the brittle polymeric membranes more flexible and soft?

It is reported that PES/DMSO membranes are too brittle. Is there any method or additive to make them more flexible? Regards

18 October 2019 1,576 6 View

Can you introduce an accessible and inexpensive natural surfactant?

Dear researchers, The surfactants are extracted from the nature are more useful. Can any one introduce an available cheap (herbal) surfactant to produce water/oil emulsion? Thank you so much....

08 March 2019 4,539 7 View

Has anyone installed the Amira Avizo software?

Dear Researchers, I need a 3D photo of a porous material such as attached one only to show the porosity, not for analyzing porous materials. Can any one help me? Regards Foroogh

19 October 2018 7,403 6 View

Necessary tube lenght to cool Natural gas in a dry-ice cooling bath?

I have a tank which contains natural gas at 250 Bar and 293 Kelvin. I want to cool the gas in a dry-ice cooling bath to about 195 Kelvin. The gas will flow in a copper-tube through the bath with a...

27 February 2021 8,128 1 View

Is there a way to grow biofilm in lab to mimic biofilms in showers and baths? Also, how can I measure it?

Hello, I am new to biofilm research and have a question about growing and measuring biofilms. We want to research the effect of a type of enzymes in breaking down biofilms in showers, baths, hot...

14 February 2021 3,522 3 View

Are there any technical and safety tips or details for hot salt baths?

29 January 2021 6,036 2 View

What should be the current and voltage for nickel coating of around 15 micron for steel specimen and also the bath composition?

I need the complete setup information.

21 January 2021 6,455 4 View

How to dissolve ferrostatin-1?

17 January 2021 1,906 4 View

Are most sol-gel adhesion issues because of surface impurities?

We are trying to get a sol-gel film coating on diecast aluminum/silica (87%/13%) parts, and it is flaking off quite rapidly. This same flaking isn't happening with prototype milled aluminum...

13 January 2021 1,110 4 View

Why am I getting inconsistent results from my ChIP PCR?

One of the times I performed this ChIP I got strong binding at the locus I amplified, but I have not been able to reproduce this result after many many tries. However, I did get the protein I am...

10 December 2020 7,279 1 View

For those in natural products, what rotovap bath temperature do you use to concentrate your extracts?

I'm a graduate student in a marine natural products lab doing isolation and structure elucidation. We currently rotovap our extracts to concentrate them with a water bath temperature of 25 C,...

09 December 2020 6,199 4 View

Why I see no changes in hardness of AlCu alloy after 2 months natural aging?

08 December 2020 2,929 4 View

How to thaw whole blood for ELISA?

Hi all, I have frozen (-20C) samples of whole blood from mice from a recent experiment. I need to find a way to thaw them so as to extract sera for an ELISA, while minimizing hemolysis and...

08 December 2020 1,004 3 View