Elena Gorokhova

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Questions related from Elena Gorokhova

Multiple entries in meta-analysis: when they can be acceptable?

We are conducting a meta-analysis to scrutinize the toxicity of a compound across a set of published studies. In some studies, toxicity is reported for a single test species, in others - in...

18 November 2019 9,750 8 View

Software for estimating uncertainty of population growth rate?

I am looking for a software (preferably freeware) that can be used for estimating uncertainty of population growth rate calculated from life table data for small invertebrates. Has to be something...

18 March 2018 8,779 4 View

DNA clean-up after Chelex extraction - any suggestions?

I wonder if anyone has a positive experience for improving DNA quality following extraction with Chelex? This method is great for improving the yield, particularly for samples low in DNA or...

11 September 2017 8,309 9 View

Why some samples generate virtually no clones whereas others make plenty?

This is likely to be a very basic question - I am sorry for asking it but will do that anyway:) We are trying to clone and sequence bacterial communities coming from different samples by using the...

15 November 2015 1,872 7 View

How to create a variable calculating rate in STELLA model?

For example, a growth rate using a standard exponential form r = Ln(Nt/No)/t. This would require using a value for population size from a previous time step and I am not sure how to do that.

11 February 2015 9,209 1 View

Can logistic regression be used for identifying significant effects of an experimental treatment (using treatment as a response variable)?

Let's say, we have treatments A and B (decided by experimenter) that we use as response variable and factors 1, 2, 3...n that we use as predictors (measured variables). Intuitively, this is not...

29 October 2014 9,015 15 View

How to optimize mixed model for GLM with incomplete dataset for "before and after" analysis?

We have a dataset that is difficult to squeeze in the mixed model (glm). The dataset consists of 3 field stations where 4 species of benthic animals were sampled before and after an event over 2...

23 November 2013 2,403 12 View

How to pellet an algal suspension?

What may sound like a very simple question is driving crazy 2 experienced lab technicians. We run growth inhibition tests with green algae using 5 ml incubation volume and low algal density. At...

04 September 2013 6,368 32 View

Using a kit for qPCR assay with non-specified primers and no references to the original study.

For the identification of pathogenic bacteria in environmental samples, we used a kit from Qiagen. However, the kit manual does not contain any information about the primer/probe or the sequence...

01 January 1970 7,397 3 View