Multigene analyses are currently thought to give more reliable results for tracing deep branching events in Metazoa but 18S still is extensively used in phylogenetic analyses.
Samples were analysed for traces of a substance called TCPY, a breakdown product of chlorpyrifos.
The water samples were analysed for trace elements such as Pb, Zn, Cu, Cr, Fe and Mn.
The solutions resulting from a mixture of the soil and the acids were then analysed for trace metals with an aid of the Inductively Coupled Plasma Mass Spectrometry (ICP MS) for the determinations of the trace metals concentrations in the soil samples.
After excluding from the datasets the likely pseudogenes, all Rip genes with more than 3 orthologs (75 out of 93 Rip genes) were analysed for traces of recurrent diversifying positive selection.
For high resolution analyses, including axon tracing, BBBA-cleared skins were flattened between two glass gel-electrophoresis plates and isolated arbors were imaged at 10× magnification on a Zeiss apotome system.
A glass reference sample is applicable to the quantitative analyses of trace elements for different types of materials with acceptable uncertainties.
Both ambient and concentrated PM2.5 was assessed for mass, size fractionation, and major component analyses, and trace element content.
Taking into account the key construction constraints, several cavity configurations, which differ for components or optical properties, are analysed by ray tracing simulations.
In total, 24 rock samples for major element analyses, 9 rock samples for trace element analyses, and 46 rock samples for U-Pb zircon dating were collected from the four locations, the Seoseok-dae, Ipseok-dae, Gwangseok-dae, and Chotdae-bong colonnades (Tables 1 and 2 and Additional file 1: Table S1).
