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Questions related from Anastasios Varkoulis
I have observations of 4 species and want to see the similarities using clustering method. I get a dendrogram containing all observations showing species A in cluster 1,species B and C in cluster...
15 July 2022 544 3 View
Is there a way to reduce pH of seawater to assess the dissolution of exoskeletons of marine invertebrates of dead organisms(e.g. shell of mussels). In other words can I for instance use HCl to...
26 March 2019 739 1 View
I need to analyse multiple samples in the form of powder using X ray diffraction. Can I mix powder derived from shells of similar organisms from the same species for qualitative and quantitative...
20 March 2019 4,706 3 View
I am currently working on determining the elemental composition of shells of sea urchins. Most of the samples show relatively similar results but in some cases it is obvious that something is...
02 December 2018 3,759 3 View
I would like to perform an XRD analysis on ground samples of sea urchin test. Would it be more effective to search for CaCO3 or for MgCO3 and why? Thank you in advance.
27 November 2018 2,641 1 View
Is there a way to maintain pH of Saltwater or even better seawater constant without using CO2 while having inserted hard tissue of sea urchin in it?
04 May 2018 5,736 2 View