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

How to analyze a particular region of my simulation box in GROMACS?

Hi, I am using GROMACS 5.1.4 to simulate water in contact with a surface. I am only interested to calculate some properties of water near the surface. Let's say at a distance of x nm from the...

03 March 2021 9,989 2 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

Do anyone here can help us in the field of molecular docking?

We have synthesized various metal complexes with different environment around the metals. Now to see the application of synthesized complexes we need this study also. we are also interested in...

01 March 2021 1,899 2 View

Distribution of particles in metal matrix?

How would define the "good" and "poor" distribution of particles within the matrix. Is there a quantitative solution to assess the distribution of the particles, which then having denotation of...

28 February 2021 7,397 8 View

Can water be extracted from Olivine?

I have always been interested in geology and wondered about how unique structures of materials behave in different circumstances. I stumbled upon Olivine, the magnesium iron silicate, and heard...

28 February 2021 7,330 4 View

Can anyone help me with the administration of the "Mind the Gap" Scale for satisfaction with transition to adult care?

We are working on a study focused on adolescents' transition to adult care and are looking for a validated measure for satisfaction with the transition. So far the only measure that we have came...

28 February 2021 2,338 1 View

Which transition metal salt precursor is best for doping? Why?

I would like to synthesize a transition metal doped TiO2 via solgel method. Hence, I would like to know which metal salt precursor to choose among Chloride, Nitrate, and Sulphate. A clear...

27 February 2021 4,285 3 View

How does charge on working electrode changes with rising potential?

During performing CV of a GCE or modified GCE, we rise the potential in the first half of the cycle and reduce it in reverse half. During the first half, what is the nature of charge on GCE or...

25 February 2021 7,994 3 View

What software programs can directly simulate Additive Manufacturing Directed Energy Deposition (DED)?

I understand there are a lot of software programs that can simulate DED by going through specific modeling, simulation, and commands. For me, that was time consuming and results were not accurate....

24 February 2021 4,428 3 View