How to make a time series imputation benchmark ?

Hello ! In a work, I have to benchmark different algorithms to fill in missing values in time series. I insist on the fact that this is imputation and not forecasting. In my case, I have access...

24 February 2021 7,470 7 View

How to make PEDOT:PSS fluorescent?

Hello, I am spin coating thin films of PEDOT:PSS (Ossila, PH1000, ~50nm thick) on Si wafers and would like to make this thin films fluorescent. I have tried to dissolve fluorescent dyes in the...

05 January 2021 6,563 6 View

INEXT in R: Problems with processing data. Who can tell me, what I'm doing wrong?

Hello, I'm trying to compare two small datasets of Elasmobranchs landed by artisanal fisheries in Brazil via rarefaction curves that are based on sampling units, not abundances. Therefore, I...

02 April 2020 3,727 9 View

Small sample size in master thesis: What suggestions do you have how to statistically treat the data?

Dear everyone who might be able to help: Hello! I'm currently a student in marine science and I am writing my master thesis about Elasmobranchs and the big numbers that are being caught by...

19 February 2020 2,741 12 View

Can a SV40 polyA signal be inverted ?

Hi all. It may sound a bit silly but I was wondering whether a SV40 polyA signal could be inverted. For reasons, I have to introduce one in a plasmid of mine but I have only one unique...

13 November 2018 774 5 View

In CxG, where are collostructional preferences stored? Are they formal, functional or external properties of constructions?

Trying to apply key concepts from CxG to modality in English, I came across research by Boogaart (2009). He particularly looks at the modal verb 'kunnen' in Dutch and raises an interesting...

12 September 2018 3,687 9 View

Is there a method to calculate the spill over effect of a terrestrial protected area on wildlife?

This would be to quantify the value of some Canadian national parks for the communities living around them. A case study would be fine.

07 February 2017 1,509 8 View

What is the consequences of phosphatase activity alteration un human physiology?

Or do you know a drug (or a drug candidate in clinical trial) which impacts (directly or indirectly) phosphatase activity? Thank you!

12 October 2016 5,040 3 View

Has anyone encountered poorly efficient smartpooled siRNA?

05 May 2016 7,743 4 View

What glucose concentration should the C6 cell line be cultured at?

There are some descripencies in the literature on whether differentiated C6 astrocytes should be cultured under normal conditions at 6.9mM (ATCC) or 18 mM (some literature). Which one is it?

10 January 2016 1,982 1 View

Is there a classification scheme for rock cavities or caverns with respect to their size and shape?

The range of forms and sizes of cavities in rock is very big. Is there a classification scheme for rock cavities regarding their size and shape?

02 March 2021 4,511 3 View

How the wettability of rock sample can be changed by ageing in pure hydrocarbon oils only?

I want to do wettability analysis of hydrocarbon oil (octane)/rock/surfactant solution system. but to do the analysis first I have to make rock surface oil-wet. Since hydrocarbon oil does not have...

27 February 2021 5,383 3 View

Any references about insects or animals that can damage or weathering of rock or fossil material?

Are there any references to insects or animals that can cause damage or weathering to the rock or fossil material? books or paper that would be nice. Thank you very much!

24 February 2021 6,805 3 View

Physical-chemical formation of stalactites/stalagmites. what promotes the formation/growth of these structures?

I know, or think I do, the basic idea behind these natural structures, as from what I know they form due to water dripping from the top leaving a salt deposit behind. But started to wonder about...

22 February 2021 1,400 4 View

Wave velocity and rock density paradox?

Practically it is known that seismic velocity increases as rock density increases, why then does the wave velocity equation involving elastic moduli and density indicate that velocity is inversely...

09 February 2021 1,843 3 View

Conversion of Vs to Vp in geophysical surveys of rock masses?

Dear colleagues I would like to have your kind opinions on the issue that concerns rock mechanics and geophysics in relation to it, for a very specific problem I have. I have attempted to find a...

03 February 2021 3,605 3 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 could be the reason for XRD pattern starting from very high counts/intensity at 3 degree 2 theta?

I am working on XRD analysis of the clay minerals from the sea sediments. My XRD pattern shows very high counts at the start of the XRD pattern (3 degree 2 theta) which is very unusual. The counts...

31 January 2021 4,493 9 View

Is Handheld XRF analyzer useable? and accurate in geochemical test?

What is the different between Lab XRF and Hanheld XRF, is it accurate and useable to analyze sedimentary rocks?

23 January 2021 9,941 6 View

What are possible factors influencing the isotope-based hydrograph separation in river confluences?

When performing hydrograph separation (EMMA method) with isotope tracers in river confluences (natural large basin), we found that the contribution of each end member sometimes exceeds the...

20 January 2021 8,403 5 View