Use of Sine voltage source in Electrical circuit with frequency domain study in COMSOL?

Dear Sir/Madam I want to use Sine voltage as a source in an RLC circuit. I want to study the driving point impedance with frequency sweep. But when I use sine voltage, I get an error like The DAE...

13 January 2021 9,826 5 View

How to find Inverse Laplace of a large matrix in MATLAB?

I am trying to find out the inverse Laplace transform of the state transition matrix obtained using inv(S*I-A). Where I is the identity matrix, and A is a state-space matrix(24x24 matrix). I have...

21 December 2020 7,041 3 View

Why does not graphene exist as a proper 2D sheet?

We know that graphene is the strongest material as it has high tensile strength. Then why does it exist as flakes? Why we cannot make a complete sheet out of graphene?

18 May 2020 8,820 4 View

What are the initial values of different ion concentrations?

What are the initial values of different ion concentrations(Electron,+ve and -ve) should be taken while simulating the partial discharges between different electrodes(point-plane, point-...

11 March 2020 6,325 4 View

How to separate r and s isomers of tetrahydrofuroic acid by normal phase chromatography?

I want to separate the r and s isomers of the tetrahydrofuroic acid by normal phase chromatography.i have taken many trials on many columns such as chiralpakADH CHIRALCEL OJ-H many chiralpak...

20 December 2019 2,093 1 View

What are the main and advanced equipments required for setting an antenna (microstrip) design, manufacturing and testing lab at 2-15 GHz range?

for setting a lab to design, manufacture and test ultra wide band microstrip antennas at 2-15 GHz range.

02 December 2019 2,990 8 View

How to separate the diastereomer peak from main peak?

My diastereomer peak is coming just after my main peak and also the main peak has tailing in it and the diastereomer peak is comin with the tailing in reverse phase HPLC system.I have attached the...

18 June 2019 2,456 10 View

Has anyone seen any pellet after isolating exosomes by ultracentrifugation?

I have isolated exosomes from conditioned cell culture supernatants, but have not witnessed any pellet after two steps of ultracentrifugation. Is it normal or should I must see some pellets? Any...

21 April 2019 5,102 5 View

How to add/create antenna block in simulink(Matlab)?

please site 1-2 examples

14 March 2019 2,711 2 View

How graphene can be coated uniformly on the substrates?

Which technique is preferred in this case? Spin coating technique or spray technique.

18 March 2018 1,625 3 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

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02 March 2021 3,060 3 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Can we distinguish the type of free fluid inside the pelvic and abdominal cavities whether blood or serous fluid using the ultrasound?

during ultrasound examination of acute abdomen, sometimes we see free fluid , can we know the type of fluid ,whether blood or not , using ultrasound only? if yes , what are the sonographic...

01 March 2021 7,476 4 View

Issues with Permeabilization during Flow Cytometry?

Hello Everyone. Currently I am working to characterize macrophages in the myocardium after ischemia-reperfusion injury in rats. Due to the low total cell number isolated from rat hearts I can...

01 March 2021 3,867 3 View

Which cell line should we use to perform biological dosimetry experiments?

We are preparing some experiments based on irradiating cells under different conditions in order to evaluate the effects in terms of DNA damage, genetic expression, etc. As our project is...

01 March 2021 3,355 3 View

Is it possible for two human neuronal cell lines to have different gene sequence for the same protein?

I am looking at the ATP1A2 (Sodium/Potassium ATPase alpha subunit 2) in two human neuronal cell lines. Expression levels of this protein seems to be almost equal when detected by one antibody....

01 March 2021 3,607 3 View

Is CD44 degraded in lysosome together with hyaluronan after CD44 mediated endocytosis of hyaluronic acid?

Also when RHAMM binds hyaluronic acid, they get internalized, will RHAMM also be degraded? Or both CD44 and RHAMM will be transferred back to the cell membrane? Asking for breast cancer cell line...

01 March 2021 8,169 2 View

Do you need the CMV enhancer before the CMV promotor for a proper function of CMV on the gene that follows?

I'm a student and I have to produce a cell line with a knockin for the NRF2 gene with GFP. I have to put a promotor in front of the GFP because the gene will be too far away from the promotor of...

28 February 2021 7,127 2 View

Anyone that can help with details in phosphopeptides enrichment?

Anyone know the amount of protein before enzymatic digestion for phosphopeptides enrichment of serume sample in Ti-IMAC? Has anyone ever use Ti-IMAC(the material is from Chinese company named...

28 February 2021 7,310 3 View