Multinomial probabilities and confidence intervals - obtaining the CI of the reference category?

Hi, Some background to my question: I have fitted 1st order multinomial Markov models with covariates. Since all probabiilties (for each row of the transition matrix) sum to 1, I estimate only...

22 February 2021 2,541 4 View

Can I use 500ng of DNA for restriction digestion?

The recommended amount of DNA for restriction digestion is 1ug in a 50ul rx I've got around 500-600ng of DNA in a total volume of 35ul. Would I get satisfactory results with this amount of DNA for...

31 January 2021 729 6 View

What is the right statistical test?

I have conducted a study in which the participants are divided in two separate groups according to the language of instruction. Also, they are divided in three different groups according to age....

04 January 2021 1,361 17 View

How can I get rid of non-specific PCR products?

I did a gradient PCR from 44C to 66C and got two different bands after gel electrophoresis. I used 10ng plasmid DNA as the template, 0.3mM primers, and the total reaction volume was 20ul. The...

13 December 2020 4,279 21 View

Can TEV protease cleave between glutamine and methionine efficiently?

Based on this paper The P1 ' specificity of tobacco etch virus protease ,TEV protease can cleave between the Gln and several amino-acids (besides Gly/Ser) with acceptable efficiency in its...

26 November 2020 5,987 4 View

How can I revive bacterial cells that have formed a pellet in the glycerol stock?

I've been trying to recover some bacterial cells by streaking them on agar plates, without success. The stock has been kept in good conditions. But, there is a white pellet at the end of the...

24 November 2020 5,494 8 View

Why does acidifying a water sample shift the peak potential for lead?

A tap water sample was being analyzed by DME. With the first standard addition of lead (in HNO3) the lead peak is a little more positiove than usual. On the second and third standard addition the...

31 July 2019 3,293 3 View

How do I normalize on three reference genes with Pfaffl Method in RT qPCR?

Hi, I have a question on RT qPCR: until now I used Livak method to analyze my qPCR data. I normally use 8 different reference genes and determine the three most stable ones. Then I use the...

10 October 2018 3,719 2 View

How can I avoid microorganism contamination in the isolation of stem cells from voided urine?

We want to isolate urine derived stem cells from voided urine as it has been described by many researchers. Unfortunately, all our cultures are contaminated. We use the standard 1% Pen Strep, but...

09 October 2018 3,926 3 View

When changing the medium for my cell culture with LPS activation, do I need to include LPS in the new medium as well?

I am using the RAW 264.7 cell line to do a drug release study. They are activated with 10 ug/mL LPS. When changing the medium after two or three days, do I need to add LPS to the new medium as...

29 November 2017 4,201 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

How climate change will influences human and animal behavioral change?

The role of climate change influencing the human behavior as well as economics interest

01 June 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 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

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 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