I have an anomaly peak on the graph current against time for the vanadiume elektrolite, wath is it?

Hello. Help me please. We have done a first charge of the vanadium electrolyte, we has a vanadium 4+ in 2.5 M H2SO4 and 6M HCl as catholyte and anolite. We charged catholyte for the 5+ and anolyte...

14 April 2020 7,399 2 View

Simple sandy beach dynamics model?

Hello! Please help to find a simple cross-shore sandy beach evolution (erosion+accretion) model for using in day-week scale (i had initial and intermediate profiles (once at month), and 3 hr...

26 June 2019 4,903 2 View

How to choose post hoc test for between-subject factor in Mixed ANOVA?

I use Two-Way Mixed ANOVA with 3 levels of between-subjects factor. I have no significant interaction, so I won't testing pairwise comparisons for one factor within each level of other factor. I...

26 April 2019 8,057 6 View

How to extend half-life of peptide?

We have peptide with improved stability and resistance to peptidases, but we have problem with excretion.. our drug excreted from blood about several minutes after intravenous injection. What...

10 December 2018 6,671 3 View

What is the relationship between two techniques of symmetry group seeking?

What is the relationship between symmetry groups of differential equations like in works P. Olver, L. Ovsyannikov, P. Winternitz and kinematical invariance groups like in works U. Niederer, C....

28 December 2017 4,783 9 View

Could anyone recommend a software for schematic illustration of nanocomposite structure?

Could anyone recommend a software for the creation of such kind of illustration (see the attached figure)?

04 April 2017 6,013 2 View

Can someone provide advice on SEM?

I am a Ph.D. candidate (Information Systems) and a beginner in statistics and SEM. I have several questions in regard to my SEM model and analysis for my dissertation study and would appreciate...

05 January 2014 2,895 21 View

Is there anyone who works on a variety of lattices?

The structure of a lattice of varieties of lattices is considered. In particular lattice of subvarieties of variety of modular lattices.

02 January 2014 7,019 3 View

How to identify what type of fillers are in a polymer?

Hello everyone, I have some PHAs blended with fillers and nucleating agents, yet I don't know what kind of fillers or nucleating agents. The producer has shut down and there's no way to get in...

24 February 2021 1,356 8 View

Can you correct the wt%/at% of an incorrectly assigned peak in EDS?

For instance, I get a spectrum and the software incorrectly assigns a Si peak as W. If I don't catch it on the software and only have the report (which lists both wt% and at%), is there a way to...

10 February 2021 7,665 4 View

In your view, which current SEM is most recommended for EBSD/TKD and EDS analysis?

I know that this is a very difficult question, as the areas of application can vary greatly. However, if you want to operate low as well as high resolution (from a few millimeters to nanometers),...

02 February 2021 4,985 4 View

What kind of detector is used in the double slit experiment to determine through which slit the photon or electron passes?

Explain exactly what the detector does and if the choice of detector affects the outcome. Einstein and Bohr had some discussions on this. What's the current situation?

29 December 2020 1,984 5 View

Interpreting and troubleshooting anomalous HPLC results?

I am running a simple isocratic Shimadzu HPLC system coupled to a fluorescence detector to detect and quantify biogenic amines from in vivo samples. But my results are not as expected and I'm...

10 November 2020 7,027 5 View

What HPLC detector to choose to detect surfactants?

Colleagues We have a Waters e2695 HPLC instrument (with 2489 Uv-Vis detector). Recently we initiated the analysis of surfactants/lipids, which are unfortunately poorly visible to UV detector. We...

08 November 2020 4,645 18 View

Can SEM-EDS give a chemical formula?

I have attached an excel file with the quantification of a mineral I conducted EDS on. I have more excel files of minerals too as I know EDS spectra for only 1 sample will certainly not be...

03 November 2020 6,899 9 View

Can anyone suggest a cause for a lack of fluorescent signal from a Diorex UltiMate 3000 RS detector in an HPLC experiment?

I am trying to detect viral capsids using an UltiMate HPLC system. I have a strong peak at the expected retention time using a 260/280nm UV detector, however I am not receiving any signal from the...

27 October 2020 3,786 2 View

What detector/sensor would be the best to use in measuring size of plastic in bodies of water?

We plan to identify the sizes of plastic in bodies of water from the surface using a device, but we are not so sure what to use best in order for us to identify it. Should we use infrared sensors,...

07 October 2020 2,702 6 View

Can I use Ultrs AQ C18 column for aflatoxin ?

07 October 2020 9,811 2 View