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

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

Could someone help me to identify these Freshwater Sponges?

Hello Everyone........

07 November 2016 6,509 7 View

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

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

Which is the most convenient manufacturing software for Additive Manufacturing?

Which tools can be used to generate machine codes for additive manufacturing?

02 March 2021 7,220 2 View

No title

Does anyone have the experience of using Taq Man probes in the QIAGEN Rotar- Gene qPCR machine?

01 March 2021 5,311 1 View

Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 3 View

How can we limit artifacts caused by rotation in fiber photometry?

We are trying to run fiber photometry experiments for long time scales, but we get these sinusoidal artifacts that come up. We think they may be caused by twisting of the fiber optic subject...

25 February 2021 568 1 View

How to measure angle between laser travel path and machine axis in Laser Measurement system?

25 February 2021 1,987 3 View

How can we add reinforced thermoplastics with granules in injection molding machine?

I need to make an injection molding machine in which short fibers are to be introduced. Short fiber length and material properties are to be determined and also the material strength are to be...

22 February 2021 4,290 1 View

Why is my qPCR suddently not working?

I've been working with qPCR for some months now. I amplify 2 genes (PSEN2 and HN1), and the protocols are optimized for both and have been working fine. The other day I amplified HN1 for some...

21 February 2021 3,437 3 View

What are the LAB methodologies (procedures, equipment etc) for CO2 enrichment experiments to study crop responses?

I am doing a proposal for a research entitled 'GRAIN YIELD AND QUALITY RESPONSES OF WHEAT GENOTYPES UNDER CO2 ENRICHMENT AND EXTREME EVENTS' I will be using climate chamber and I would like to...

18 February 2021 6,494 4 View

Small displacement measurement in vacuum?

Hello, I have a question. there is a circular thin foil which vibrates in vacuum, the foil restricted and moves up and down. it is like a diaphragm between two pipes . both sides are in vacuum but...

18 February 2021 8,075 3 View