What statistical test should I use for the comparison of proportion between groups, one of the proportion being 0?

I would like to compare the proportion of mice with resistant bacteria in their faeces. I have three groups, and in one of them not a single mouse has resistant bacteria. I cannot perform Chi2...

25 August 2020 3,579 2 View

How do you deal with large ANSYS Workbench analyses?

Hello, I am trying to evaluate stresses on a model which is quite large and I have memory limitations. I've seen cases ( http://www.padtinc.com/blog/submodeling_ansys_mechanical/ ) where people...

10 July 2020 5,913 3 View

Lamp (bulb) for iCycler iA iQ5 bio-rad..?

Hello everyone, Has anyone ever change the bulb (lamp) in a iCycler iA iQ5 bio-rad? Bio-rad does not sell this lamp anymore, and I'm searching for an alternative solution. However a bulb with...

27 November 2019 2,467 1 View

I was wondering if there are qualitative articles about what leads to impulse buying?

07 October 2019 850 5 View

I'm looking for a PK software that can simulate time-concentration graphs via inputting various variables (ie. Vd, kel, F, etc.)?

Thanks in advance! Purpose is for teaching.

19 August 2019 6,293 1 View

Can any one help me with an analysis grid of school books including indicators on the development of logical reasoning ?

Can any one help me with an analysis grid of school books including indicators on the development of logical reasoning in mathematics, experimental sciences ?

11 June 2019 3,525 4 View

How to blast a fast file with multiple sequences in a genome?

Hello to all, I have a complete genome of a plant and a fast file with multiple sequences of a specific protein ( nucleotide sequence). I want to blast the file into the genome to see if these...

08 February 2019 3,473 5 View

Formvar-coated grids - grey colour, best method?

I need to prepare formvar-coated grids for TEM. I usually use an uncommon method of a drop of formvar on water, however the formvar film is usually uneven. Another and more common method is by...

03 December 2018 2,250 5 View

Long term storage of Cholera Toxin B ?

Hi, I am planning to use Cholera Toxin B for neuroanatomical tracing. The CTB conjugated with Alexa Fluor dyes can be obtained in the solid (500 ug or 100 ug powder) form from suppliers and,...

05 November 2017 8,721 1 View

Hippurate hydrolysis test for Campylobacter jejuni negative after long term storage at -70?

Hippurate hydrolysis test was positive for Campylobacter jejuni ATCC 33560 and for other C. jejuni isolated from stool and other human samples. After 6 month storage at -70 degree hippurrate...

16 May 2017 4,535 4 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

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

Why should we choose deep learning to machine learning? Why is CNN better for image classification? Can I get Typical Answer?

What Characteristics makes CNN work better?

03 March 2021 1,458 4 View

What are some of the research gaps in machine learning and artificial intelligence in africa?

i would to know some of the research gaps in the artificial intelligence field in most african countries.

03 March 2021 6,145 3 View

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View