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Questions related from Elena Gorokhova
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 9,763 8 View
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 8,787 4 View
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 8,320 9 View
I need to run two models with different time step. The output from cyclic model A (with shorter time step) is used as input in model B (longer time step). Intuitively, it feels that there must be...
04 June 2016 7,568 7 View
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 1,885 7 View
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 9,218 1 View
I need a suggestion from those who are familiar with STELLA or iThink (isee) modeling. How to run a model multiple times (>1000) and collect the output in a usable format?
08 February 2015 1,973 1 View
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 9,027 15 View
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 2,413 12 View
When running a classical SOD (superoxide dismutase) assay, samples with xanthine (X) and xanthine oxidase (XOD) produce consistently low absorbance compared to the standards (X+XOD+SOD at...
06 October 2013 4,075 9 View
Stable isotope discrimination factor is commonly determined by doing a diet-switch experiment, when a consumer is receiving an isotopically new diet and samples of the consumer tissue(s) or a...
09 September 2013 7,263 9 View
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 6,375 32 View
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 7,407 3 View
