What is the background idea, logic and understanding, while solving second order ODE using ode45 in Simulink-Matlab?

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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

What are the new 2D nanomaterials were used for Silver nanoparticles stabilization?

In the stabilization of AgNPs are vital in current research interest. However, some of the 2D nano-materials like graphene oxide, MoS2, etc... previously used to stabilize it. But still they shown...

01 March 2021 2,207 3 View

What information can be had from raman at higher wavenumber?

i have recorded raman spectra of strontium oxide thin film. the spectra were recorded in the range 400 to 4000 cm-1. i have reference to peaks upto 1000cm-1. but i couldn't find literature for...

26 February 2021 2,499 1 View

What are the methods used for CNT..?

Respected Professor's i hope you are doing well and happy. i need some information about carbon Nanotubes. before blending the CNT with the matrix the CNT has been introducing in some treatments....

24 February 2021 5,383 5 View

Langevin Dynamics in shear flow?

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23 February 2021 1,761 1 View

How we can measure Kemp % in wool without using of benzene?

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21 February 2021 7,260 4 View

Which is the best software or programming language (user friendly) for analysing data?

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20 February 2021 3,950 15 View

What is difference between In-line transmission (%) and Total transmission (%) value of optically transparent Ceramics?

I am working on transparent/translucent zirconia-based ceramics. In many papers, I have seen that they are reporting both In-line transmission (%) & Total transmission (%) value of...

20 February 2021 9,405 6 View

Hi..how to isolate crude HDL (all subfractions) from human serum by size exclusion chromatography?

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19 February 2021 5,576 2 View

What is the reason film thickness increased?

what is the reason film thickness increased when increased doping concentrations give some reasons The measured film thickness is 156, 282, 394, 548 and 681 nm for 0, 1.5, 2.5, 3.5, and 4.5 wt....

17 February 2021 8,987 5 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

16 June 2021 0 0 View

fatal error

16 June 2021 0 0 View

fatal error

16 June 2021 0 0 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

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02 March 2021 2,431 3 View

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

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02 March 2021 4,910 3 View

Why the results when using wall thickness and when using shell conduction are different in ansys fluent?

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01 March 2021 9,537 2 View

Joint behaviour in Abaqus is not captured well?

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In Molecular Dynamics Simulation, how do I make changes to the force field according to my protein?

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How can you bring two structures together to create an adhesive bond in LAMMPS?

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01 March 2021 3,325 2 View

Alfonso Bueno-Orovio

Solvers for first order ODEs, including ode45, can be easily accommodated to solve systems of ODEs. When solving a second order ODE, the equation is first transformed to a system of two first order ODEs, which is then numerically approximated by the ODE solver (ode45 in this case).

Pisupati Sadasiva Subramanyam

It is based on State variable Technique, based on the Principle that an n-th order differential equation can be represented by means of n first order differential equations in Matrix Form as used in control system.

P.S.