How reliable are degrees of freedom for lme mixed models in nmle package?

I am running mixed models analyses because I have participants nested in groups. Across the different analyses, I have very different degrees of freedom in the lme output with nlme package (and...

09 February 2021 6,767 3 View

Power based on past research in multilevel model?

Hi I want to replicate a published article that uses a multilevel model (participants nested into groups). I want to see the sample size I need to achieve an 80% power. I saw the simr r package...

06 January 2021 2,984 6 View

Failure of protein expression ?

Dear all, is there any possibility that C-myc epitope tags at recombinant protein can cause the protein degradation/failure in protein expression ? I can't find any previous literature that can...

11 August 2020 7,376 4 View

Why is Legionella spp. from environmental samples cultured in a CO2 enriched atmosphere?

I've recently started working in an environmental analysis laboratory and wondered why is it that, in order to detect Legionella spp. from water samples, the incubation is done in a closed bag...

23 July 2020 503 4 View

Unable to express Recombinant Protein in Pichia Pastoris?

07 July 2019 3,109 6 View

Which of the journal article publication has a more academic weight between the empirical and review article?

Lecturers in a college of education argued on which article has the higher points between the empirical and the review article. Some think it is better to engage in empirical writing rather than...

29 November 2018 8,689 8 View

Is there an increase in protein synthesis by stress (p70-s6k)?

Hi, we are testing an antitumor drug and we have seen that the first hour increases the activation of p70-s6k but then blocks its activation. we have also found that both AKT and ERK activation...

25 October 2018 5,290 1 View

Mixed model: Level 2 IV and outcome?

Hi, I asked a related question before but I am asking a slightly different advice.. If I have a mixed model, can I do an ANOVA when both my independent variable and my dependent variable are at...

27 May 2018 6,189 9 View

Problems with flow cytometry. Cell cycle arrest by confluence?

Hello, I am testing a drug in order to see if it can stop the cell cycle. We sow 100,000 cells in a 100mm plate and treat it for 24 and 48 hours. The cells (tumoral and not tumoral) are not...

21 May 2018 6,041 2 View

SPSS factor analysis error degrees of freedom?

Hi, I'm running an exploratory factor analysis on SPSS and I have a message error: the number of degrees of freedom (0) is not positive, Factor analysis may not be appropriate. What does this mean?

10 April 2018 8,098 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

How can the use of Jolly Phonics improves the quality of reading, speaking and writing in rural disadvantaged communities in Papua New Guinea?

Jolly Phonics reading program is an effective way to teach early reading to young learners. How can lectures at the university prepare early childhood student teachers to teach Jolly Phonics to...

03 March 2021 3,731 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

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View

Is there any rich, publicly available English literary corpus?

Hi everyone. I am looking for a rich corpus in English literature, a one which includes literary prose ( e.g., novels or short stories) . can anyone propose a good one? Best regards Fatemeh

01 March 2021 1,970 2 View