How to find Lyapunov Exponent for a non-linear time series in R/Python?

I am working on a project where I am using chaos theory to check if chaos is there in non-linear time series and use it for a neural network model. We need two parameters for finding chaos (using...

29 October 2020 3,289 3 View

Is there any other fluorescence dyes which can be used to stain bacterial cells like SYTO9?

Fluorescent staining and further microscopy is a powerful tool in studying microscopic strictures. Are there any other dye systems available that can stain bacterial cells as SYTO9 does?

08 April 2020 9,038 7 View

Can PFM phase image be useful to extract multi-state polarization level of ferroelectric thin films?

I want to polarize my ferroelectric PVDF-TrFE thin films in different directions and probe it using PFM. I know that PFM phase can read either 0o or 180o. Can it read any other orientation in...

05 March 2020 4,883 3 View

Why do some researchers consider "damage parameters" in concrete while others do not?

I have been reading a few papers related with the non-linear finite element analysis of RC beam under static loading, in Abaqus using CDP model. So far, I have found that some researchers use...

20 May 2019 469 4 View

Can anyone suggest an apparatus for measuring vibration of washing machine drum experimentally ?

Washing machine drum vibration - rotating drum - equipment for measurement

06 September 2018 7,671 3 View

Are there any ways to provide constraint between a 3D-Solid node(or Surface) and a 2-node (truss or beam element) in ABAQUS?

Consider a rebar welded on a base plate and load is applied on the lateral direction. Can you suggest some ideas to constraint the end of the rebar with the base plate in ABAQUS ? The attached...

22 April 2018 2,843 3 View

Additives for decreasing the thermal conductivity of polyetylene foams?

I am looking for additives/filler to decrease thermal conductivity of cross linked closed cell polyethylene foams? please advise me what kind of fillers I can use for my research purpose.

13 December 2017 1,489 3 View

What information can we get from the Exchange stiffness constant of ferromagnets?

12 April 2017 6,738 5 View

XRD phi scan of thin film substrate shows split peaks?

When I do a phi scan about the substrate peak, the phi scan peaks seems to be split or shows multiple peaks at the same value of Phi. And also omega scan about the substrate peak give multiple...

28 March 2017 9,580 3 View

Isolation of endophytic bacteria

What is the best method for isolation of endophytic bacteria from tuber (underground) portion of plant and hard plant part?

04 January 2017 3,596 7 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 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

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View