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

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

How to define and get results (stresses) for certain points of a model in abaqus, using python? When the size of the model changes?

I want to do a parameter study of a aixsymmetric cylinder in Abaqus. I want to create several jobs where I get the stresses for 3 different points in my model. These points are defined. I wrote a...

01 March 2021 10,078 1 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

How relevant is Mini slump cone?

for all the rheology researchers, my question is, how relevant is a mini slump cone (smaller than a standard 50 cent rheometer). currently based on testing, the thickness of slumped material is...

26 February 2021 3,668 1 View

Stress/strain tensors decomposition ???

25 February 2021 6,760 1 View

Modeling viscosity using model of Chung?

Hello, As part of simulation of gases mixture and water, I need to calculate viscosity of the fluid components and I am using relationships proposed by Chung et al. (1988). The irony is while I...

25 February 2021 8,053 5 View

How to reduce residual stresses in MD simulation?

I am working on a preparation of representative polymeric structures of some popular polymers, such as polyimide or PTFE for MD simulation, during which a single nitrogen or oxygen atom will be...

24 February 2021 8,105 3 View

What is the suitable range of Sulfur content and Viscosity of Heavy fluid Oil that used in Kiln?

What is the disadvantages of high sulfur content to the ceramic burning process? and what is the effect of outranged viscosity?

24 February 2021 8,219 2 View

Suggestions for occupational stress surveys?

I am currently writing a masters thesis on reasons for occupational stress in the early childhood classroom, and want to include a short survey assessing participants work-related stress levels. I...

24 February 2021 8,678 2 View

How to determine solutionizing time for cast Al alloys?

For wrought alloys soaking time at solutionizing temperature is determined by thickness .Do we have such standards for cast Al alloys

23 February 2021 8,839 3 View