How to calculate Power and OR in genetic association studies?

In studying the effect of a SNP on susceptibility to a disease in a case-control design, How I can calculate the detectable OR for a given sample size with a power of 80%? which parameters I need...

01 February 2016 7,704 5 View

How can I analyse the data from a single SNP under additive mode?

I want to analyse my data to see if there is an association between a disease and an SNP, should I use an additive model? How can I perform the analysis using R or SPSS?

06 July 2014 5,789 23 View

How can I analyse the results in R, when I have the allele frequencies of case and control groups?

I have the allele frequencies of both case and control groups, and I want to see if the allele frequencies are significantly different or not, I want to do the analysis in R.

04 May 2014 7,843 6 View

No title

04 May 2014 1,447 2 View

Anyone have any insight as to why DNA doesn't dissolve in TE?

I use a salting out method to isolate DNA from blood. Sometimes when I add TE to the participated DNA, it doesn't dissolve in it, even after one day. does anyone know why?

01 February 2014 3,018 4 View

Is it possible to isolate buffy coat from frozen blood?

We have some frozen blood in -20 freezer. They are there for about 1-2 months. Now I need to isolate WBCs. Does anyone know of an experiment I can use? I need them for DNA extraction.

01 February 2014 8,514 23 View

Does DNA get any damage if left dried without adding water or TE for some days after DNA extraction?

Will it be okay for experiments like PCR after dissolve in TE?

09 October 2013 7,718 6 View

Brown color DNA in salting out DNA extraction method - what's the problem?

I use a simple salting out method to extract DNA from blood, it usually works well, but in some samples the extracted DNA has a brown color and surprisingly the DNA doesn't dissolve in TE. Does...

09 October 2013 889 3 View

I need to extract DNA from buccal swabs of babies, does anyone have an experience with some protocol, extraction kit or something?

If you have some experience or suggestion please let me know, any answer would be appreciated.

03 April 2013 8,427 3 View

I have to perform a PCR by a reverse primer which have a mismatch, one nucleotide before the 3' end. How could it affect my PCR?

Do I have a big problem?

11 December 2012 2,756 26 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

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

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View