Is there any tutorial for comsol general projections?

Hi, im trying to make a projection in a 3d comsol model. I have a non uniforme chanel and my intention is to get the average tempreture in the y-z cross section and se the average tempreture...

02 March 2021 4,624 4 View

Where can I find public datasets with Covid-19 patient information?

Hi, I'm looking for public datasets that have CT, X-ray information, or medical records for patients with Covid-19. Does anyone have suggestions?

28 February 2021 4,760 3 View

How to locate and collect the pineal gland in the amphibian brain?

Our team has been trying to locate and collect the pineal gland in the American bullfrog's brain (Lithobates catesbeianus) for some time now. However, we don't have a standardized protocol for...

18 February 2021 3,453 4 View

I am trying to run a simulation on LS-Dyna and I am facing the error below with Nodal rigid constraints. Can anyone tell how to fix it?

*** Error 20393 (STR+393) Nodal rigid body ID 85000010 contains node ID 83500180 already used in a rigid body/nodal rigid body definition.

20 January 2021 2,019 1 View

DFT Optical calculation and plotting of Real and imaginary Permittivity.??

Dear DFT Community, i have calculated Frequency dependent optical permittivity of Au using (VASP) my INCAR tag includes LOPTICS=.TURE., my OUTCAR has expected frequency dependent IMAGINARY...

30 December 2020 9,543 9 View

Can comsol probes be used for stationary studies?

I'm trying to plot while solving comsol probes vs iterations, but the only option i see for x axis is row index from the probes table. And all i can get is a graph with just a point with the value...

22 October 2020 4,618 1 View

How to draw a operating window to demonstrate the bioreactor performance?

I would like to make a operating window for a bioreactor process where I want to incorporate data such as impeller speed, gas flow rate, hydrodynamic shear, mass transfer efficiency, power...

01 September 2020 2,501 3 View

How can I be sure that my bone marrow cells are differentiated into bone marrow derived macrophages (day 7) at a gene expression level?

Hi everyone, I'm trying to establish a standard protocol to cultivate BMDMs. I'm culturing BM cells for 7 days in 100mm petri dishes, addition of M-CSF(20ng/mL) on day 0 and day 3. I would like...

09 July 2020 1,742 3 View

RTD Step analysis with matlab?

Hello to all my dear colleagues. I need to get my E(T) curve for my reactor. I already have the measures but I ignore how to procede with the data analysis. I have got Matlab but i am not sure if...

21 June 2020 2,675 5 View

Help about chemical sludge characterization?

Hello. I did run some coagulation / flocculation experiments[FS1] and I have been requested to characterize the sludge. I am ignorant on how to so. I was only requested to do SEM, XRD and Zata...

16 June 2020 8,715 7 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

Multi effect distillation modeling in EES?

Dear colleagues If anyone has a model of multi-effect distillation in EES or MATLAB software, please send it to me.

24 February 2021 7,282 1 View

What is the best etching method for Mg-Ca alloy?

I have used Picral etchant (4.2 g Picric acid, 10 mL Acetic acid, 70 mL Ethanol, 10 mL distilled water) but it didn't work. Is there any alternative?

21 February 2021 2,558 5 View

How to dilute Toxin-DMSO solution?

I have a concentrated solution of a toxin(50 micromolar) in DMSO 100%. I need to dilute it inorder to dilute both the toxin and DMSO wich can be toxic to cells. Which would you guys recommend to...

19 February 2021 7,447 2 View

How to dissolve lyophilized silk fibroin?

Dear members of the community, I am trying to concentrate silk fibroin to 25 % (w/v). Nevertheless, i am struggling with the concentration step. I successfully achieve concentrations of 5-6 % of...

16 February 2021 1,808 1 View

I have some problems with the mass transfer part of the CFD simulation of membrane distillation.Can anyone help me?

I am working on modeling of Direct Contact Membrane Distillation system with COMSOL Multiphysics software. I have some problems with the mass transfer part of the simulation because I don't know...

14 February 2021 379 2 View

Aspen Plus Error: Unknown or undefined bead number?

Hello, in my Aspen Plus Simulation (see attachment) there are two heat exchangers. One HEX1 (oil+gas) ist fed by hot gas which ist coming out of a burner. The other HEX2 (gas+gas) shall work as a...

14 February 2021 8,096 2 View

What are effective methods for removal of iron from organic acids?

I am seeking methods to remove trace iron from organic acids, including acetic acid, propionic acid, and formic acid. Distillation works, but is expensive. I'm looking for alternatives to...

31 January 2021 984 3 View

Why do the absorbance values of different concentrations of ascorbic acid solutions mixed with DPPH free radicals stay constant?

26 January 2021 458 14 View

Why degradation of pesticides is maximum at specific pH by using nanoparticles and nanocomposite?

actually, I am degrading pesticides by using inorganic composites the pH of the pesticide in distilled water is neutral the pH of nanocomposite is also neutral then why maximum degradation takes...

23 January 2021 8,775 3 View