Why is the sum of the elements in a row in a Q matrix equal to zero?

When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?

28 February 2021 3,864 3 View

How to interpret different leached phases of metapelites?

Extraction of three different phases of metapelites, mostly phyllites as the Carbonate phase, Fe-Mn Phase, and Silicate phase has been obtained. After doing ICPMS, different results have evolved....

11 February 2021 5,198 10 View

Is anyone working on measurement of globalization?

I am in need of the help of anyone who is working on measurement of globalization? Please inform me at the earliest.

23 January 2021 1,259 1 View

Whether new variant will affect the diagnostic method of detection or not?

can it be diagnosied by the same tool or different tool

04 January 2021 2,964 2 View

What is holding back the computing power of modern computers..?

The last decade witnessed a tremendous use of computational power for various applications such as deep learning, MD simulations, and astrophysics. Is quantum computers really going to take the...

31 December 2020 1,396 2 View

Can some body help me to figure out which General Climatic Model is suitable in case of Asia particularly Bhutan?

There are total of nine GCM from CIMP 6, and I am confused which model suits best for my study . I want to determine change in land suitibility with respect to 3 SSP, RCP 2.6, 4.5 And 8.5 for...

25 December 2020 8,606 2 View

Python modules for old Spectrum-Analyzers?

Hi All, Are there any python modules available for old HP-Agilent spectrum analyzers around? I know PyMeasure has a library of some commonly used and new electronics but I am looking for old ones...

21 December 2020 3,460 3 View

How to simulate a new protocol in VANET Toolbox in MATLAB?

I've downloaded the VANET Toolbox in MATLAB, but there aren't any detailed documentation on how to use it. Can anyone please explain the step by step process in designing the simulation...

01 November 2020 7,262 2 View

Which simulator other than NetSim is easy to build VANET sims? How to implement a MAC protocol and analyse the throughput,transmissions?

I have an assignment where I have to implement a latest protocol in VANET and analyse the results. I have chosen the OCA-MAC a TDMA based MAC protocol. Which simulator is easiest to implement...

01 November 2020 518 3 View

How can I get started learning response surface methodology, and what are the pre-requisite knowledge needed?

How do I get started learning RSM? If you could provide text book names on the subject or links to free resources that will be greatly helpful. I also wanted to know what pre-requisite knowledge...

29 October 2020 4,241 3 View

Charmm/GROMACS Residue 'ZN' not found in residue topology database?

I am trying to do some MD simulations of a protein with zinc ions. I am trying to use a charmm forcefield (I have tried 2017 and 2021) and Gromacs. I get an error when doing pdb2gmx Residue 'ZN'...

12 February 2021 9,367 2 View

Can I simulate Ferrite in HFSS?

I have a design with 2 dipoles working at different frequencies joined in one system and separated by Ferrite. I think, Ferrite was used to minimize the interference between 2 antennas as much as...

25 January 2021 5,918 3 View

How do I know the parameters for calculating the dislocation (edge and screw) density from XRD?

Especially the C12, C44, and Ai values for ferrite pearlite microstructure. Thanks

19 January 2021 9,035 5 View

How to get mesoporous cobalt ferrite thin film on Pt/Si substrate by electrodeposition method?

We want to deposit a thin film of mesoporous cobalt ferrite using a surfactant on Pt coated Si substrate by electrodeposition. What is the procedure for it? Does KLE polymer useful for this procedure?

10 January 2021 467 10 View

How we can isolated MnO2 from solid organic product ?

The compound 1,4-dihydro pyridine oxidized in the presence of potassium permanganate and microwave. After oxidation, the organic product and manganese dioxide are formed, and the two substances...

09 January 2021 5,358 4 View

Please share some research papers on the synthesis of Mn3O4 nanoparticles via Hydrothermal method by using Manganese(II) nitrate hydrate?

05 January 2021 9,040 4 View

Which is the best gene editing tool among TALENs, ZFNs, CRISPR and HENs?

Since two decades we came across many tools to edit the desired gene and genome viz., clustered regularly interspaced short palindromic repeats (CRISPR)-CRISPR-associated protein 9 (Cas9), (2)...

27 December 2020 7,667 10 View

Why peaks are shifted in XRD anlysis ?

I have synthesized zinc oxide nanoparticles by physical method (sputtering) direct interaction of plasma with zinc target and it is done in atmosphere. The sample were prepared at different...

18 December 2020 10,010 6 View

How to know if Zinc Oxide is coated on the glass substrates?

Hello all I have prepared Zinc Oxide nanoparticles using sol gel synthesis. I tried to coat the ITO and glass substrates with the ZnO nanoparticles ( dispersed in ethanol). But I am not sure if...

08 December 2020 3,692 8 View

Why band gap energy of cobalt ferrites is increased with increased in zinc(dopinng element) concentration?

In most of cases band gap energy of cobalt ferrites is decreased with increase in Zinc concentration that is hold to brass model. But when energy band gape is increases with increased...

03 December 2020 2,439 3 View