How can I generate random samples from Bingham distribution in R? How can I construct those symmetric matrices?

in the function rbingham(n,A) in R software how can I construct that A (symmetric) matrix?

24 February 2021 3,528 3 View

How can i increase biomass of my E. coli culture to better plasmid yield?

Hi everyone, I want to increase the biomass of my E. coli culture for better plasmid yield. Use of different strains of cells and media or any other suggestions are welcome. Thanks!

11 October 2020 6,400 3 View

Do you have the following alloys?

Dear colleagues, It will be a great help if someone can provide me small pieces (1.5 cm * 1.5 cm * 1.5 cm) of cast Al 5024 alloy and Al 7068 alloy (with and/or without T6 heat treatment. Happy to...

31 July 2020 3,593 1 View

What to do when there is no main or interaction effect but multivariate tests and pairwise comparision tables show significance?

I run repeated measures ANOVA for an intervention study. I have 3 intervention groups and 3-time points. The output in SPSS showed that there is no significant main effect of time and no...

02 April 2020 2,328 7 View

Nonparametric equivalent of ANCOVA?

For testing the effectiveness of group intervention, I would like to conduct ANCOVA. I have one experimental and two comparison interventions. However, my data is not normally distributed. Also, I...

20 November 2019 432 9 View

Would you recommend using SYBR green based real time PCR kit for disease diagnostics?

It is seen that most diagnostics kits are Taqman based, now as PCR is quite sensitive, can we settle ourselves with SYBR based kits in a resource-crunch set up?

17 August 2019 3,051 3 View

How to solve problems arising from choosebank() command in R?

I am using seqinr package in R. But when I am giving the command choosebank() to find out the existing databases or commands like choosebank('swissport") to open any specific database, R is...

15 April 2019 1,541 3 View

Is the amount of RNA extracted from normal human serum too little, to give amplification of a marker gene by RT PCR?

I have isolated RNA from 50ul serum and eluted the RNA in 30ul of DEPC- treated water. But when i am preparing 10ul of cDNA from 1ul of the RNA and using it for amplification of a 115bp...

22 January 2019 6,813 3 View

How to draw collinearity of a gene?

I want to study collinearity of a set of genes. However, while going through a few related papers, I found out that the most used software is MCscanX. I did download it, but since I am not a...

07 November 2018 2,285 3 View

How do you decide which housekeeping/reference gene is the most suitable for your samples?

I used UBC, GAPDH and Beta actin as housekeeping genes in my proximal colon samples. Bu my each Cq calculation shows difference according to housekeeping gene that I analyzed. For instance the Cq...

29 June 2018 4,479 2 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

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 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

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 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