How to calculate stress at the cross section of spherical particles within a matrix?

Hi all, I am currently working on some background calculations before I start a new project related to metal matrix particulate composites. I am trying to find a way to calculate the stress at...

19 February 2021 8,503 3 View

Posthoc test after two-way ANOVA (two factors with two levels)?

Hi everyone, I was wondering if runnig a posthoc test regardeless of a significant interaction might make sense. I have prepared a dataset with obviously invented data but which can help to the...

02 February 2021 8,061 1 View

How can I use amylase enzyme to digest molluscan tissue before DNA extration?

Hi, I have a problem with a hight contet of mucopolysaccharides in some molluscan samples. I tried different DNA extration procolols but I can't already remove all the molecules that inhibit PCR...

01 January 2021 8,900 3 View

Will the spread of the new SARS-Cov-2 strain affect the efficacy of mRNA-based vaccines?

Recent studies have highlighted the isolation of a new strain of SARS-Cov-2. Could the new discovery compromise the effectiveness of the vaccination campaign ???

21 December 2020 7,516 4 View

Metasurface S parameter measure setup. How to do that?

Hi. I want to simulate the S mesurament setup of a metasurface. I took an horn antenna and simulated it's gain at my frequency. The I placed one on a side and the second on the opposite side....

16 October 2020 2,714 3 View

Is temperature measurement really useful as a screening measure for COVID-19?

The measurement of the temperature at the entrance to some structures or hospitals is a universally adopted measure in prevention strategies. There are two questions: considering the high number...

31 August 2020 5,843 12 View

Which could be a good DL technique for tracking an object and check for his integrity?

Hello everyone, I'm working on a computer vision project in which I need to detect in real time a moving object and check whether is still integer or not. Images will be supplied from a 4K...

05 August 2020 2,460 2 View

After the shocking case of George Floyd, should the physical restraint techniques used in the police and psychiatric settings be recoded?

George Floyd's case shocked the world. Physical restraint is a method used by the police but also in the management of psychiatric patients who pose a danger to themselves or others. In your...

10 June 2020 1,331 9 View

Can the political orientation of a medical / scientific journal editor influence scientific choices?If so, it'is morally and ethically acceptable?

Donald Trump's statements and the political opinion that publishers, especially American publishers, had of him profoundly indicated the editorial lines of the main scientific newspapers. Most...

10 June 2020 8,913 15 View

How to model in Arena Rockwell that all entities must clear their tails at the end of the simulation?

I am modeling the flow of visitors during a working day in a museum. The main problem is that I don't know how to model in Arena Rockwell the fact that all entities must clear the queue at the end...

20 February 2020 9,457 1 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

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 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

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 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

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View