User: Ali Mohammadian

gravatar for Ali Mohammadian
Reputation:
290
Status:
Trusted
Location:
Last seen:
6 years, 1 month ago
Joined:
7 years, 3 months ago
Email:
n*****@gmail.com

Posts by Ali Mohammadian

<prev • 29 results • page 1 of 3 • next >
0
votes
0
answers
337
views
0
answers
Differentially regulated genes
... Dear all, I have collected some 50 samples of brain tumor. These samples contatin both normal and tumor cells. I have measured the exporession of 2 genes in both normal and tumor area of my 50 samples. What statistical test is correct to deide whether there is an up- or down- regulation in genes? ...
brain written 6.1 years ago by Ali Mohammadian290
0
votes
0
answers
408
views
0
answers
elementary question about statistical comparing of standard deviations, pls help
... Dear all, Is there a statistical test to compare standard deviations (within replicate samples) in expression values of raw data and normalized data? Thanks in advance ...
written 6.6 years ago by Ali Mohammadian290
0
votes
1
answer
498
views
1
answers
Answer: A: Plausibilty of application of "modified LOESS normalization" to single channel ar
... Dear all, I wondered whether it is possible to apply modified loess normalization: "A modi?ed LOESS normalization applied to microRNA arrays: a comparative evaluation" , BIOINFORMATICS 2009. to single color miRNA arrays as well. Thank you indeed very much. ...
written 6.6 years ago by Ali Mohammadian290
0
votes
1
answer
498
views
1
answer
0
votes
1
answer
1.5k
views
1
answer
HT qPCR; Creating qPCRset from expression matrix
... Hi all! How is it possible to create a qPCRset object from an expression matrix (in new veersions of HTqCR?) Thank you indeed very much. ...
written 6.6 years ago by Ali Mohammadian290 • updated 6.6 years ago by Heidi Dvinge2.0k
0
votes
0
answers
324
views
0
answers
Linearity of "Scale rank invariant set" and "geometric mean" of normalizeCtData {HTqPCR}
... Hi all! I was wondering whether scaling algorithms that multiply whole dataset by a fixed number are considered linear. Thanks indeed ...
written 6.6 years ago by Ali Mohammadian290
0
votes
0
answers
443
views
0
answers
Help with choice of normalization
... Hi all! I have a set of data, and I have normalized them using a couple of normalizations. I modelled MSE and calculated F-ratio (signal-to-noise ratio) for each normalization method. Should I go for normalizations that lead to lower MSE or calculated F-ratio? (MSE is modelled just between replicat ...
microarray normalization go microrna written 6.7 years ago by Ali Mohammadian290
0
votes
1
answer
439
views
1
answer
Normalization of array leads to decrease in number of differentially expressed genes
... Hi all, I performed normalization on my array data (I use qPCR array of 384 wells), and if I normalize within replicates of all conditions(each condition normalized separately) , I get more differentially expressed genes that if I normalize all data together., How may I found that which result is m ...
qpcr normalization written 6.7 years ago by Ali Mohammadian290 • updated 6.7 years ago by Kevin Coombes430
0
votes
1
answer
305
views
1
answer
Newbie. quantile normalization should be done on all conditions or within replicates of each condition?
... Hi all! Newbie here. I wondered wh ether quantile normalization should be done on an array containing all conditions of 1 experiment (eg containing both patients and healthy people) or within replicates of each condition (eg on data from patients and on data from healthy people separately)? Thank ...
normalization written 6.8 years ago by Ali Mohammadian290 • updated 6.8 years ago by James W. MacDonald49k
0
votes
0
answers
341
views
0
answers
Pooling of samples for array
... Dear all, I wondered whether there is a formula to estimate the number of different biological samples that can be pooled in array studies with the least loss of information. Thank you in advance. ...
written 6.9 years ago by Ali Mohammadian290

Latest awards to Ali Mohammadian

No awards yet. Soon to come :-)

Help
Access

Use of this site constitutes acceptance of our User Agreement and Privacy Policy.
Powered by Biostar version 16.09
Traffic: 339 users visited in the last hour