Is a multivariate linear mixed model appropriate to analyse differences over time?

Say I have a data set of 32 study participants. The dependent variables are two different physiological reactions to stimuli. These are repeated measures, recorded over 16 trials. There are two...

13 December 2020 7,218 3 View

Calculating effect sizes without knowing the sample size by subgroups?

Hello! I am calculating effect sizes for a research synthesis of the literature (e.g. Hedges' g), but many of the original publications do not provide the sample size (N) by subgroups. I see...

13 September 2020 7,587 3 View

Does anyone have a user manual for the Cahn DCA-322 Dynamic Contact Angle Analyser?

Our instrument is from about 1998 and we no longer have the manual. The Help function in the program needs to connect to the internet, but we have to keep the computer offline, therefore the help...

29 May 2019 6,109 3 View

Does anyone know of a dataset for seismic activity for Europe?

29 March 2019 4,501 3 View

How can I change my entry regarding my book?

I mistakenly wrote that my book would be open access. This is not the case and needs to be changed. Presumably this means that I cannot have reviews of it either?

07 March 2019 1,442 1 View

A problem with generation of lentiviral particles of a large gene (4kb)?

I am trying to generate lentiviral particles from a insert (4Kb) cloned into a lentiviral vector (pWPI, 11Kb) and I am having some issues. I transfected HEK 293T cells with the pMD2G, pPAX and our...

02 August 2018 5,170 3 View

Does anyone know how to calculate DNA bending angle with curves+ program?

I am working with DNA-Protein complexes and I tried to determinate it with x3dna but i had some problems with the vectors, so i read that other used program is curves+. Has anyone worked with this...

27 March 2018 277 1 View

What is the future of labor law in a future world without work?

Labor law is predominantly carried out from the domestic perspective of the countries through their legislation, accepting only some international (often disregarded) legislative...

23 March 2018 473 6 View

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13 June 2017 7,057 4 View

Which broth medium would be the equivalent to solid Standard Plate Count PCA??

I wish to analyze the bacterial composition in a food sample and I wanna use a liquid enrichment medium prior to agar media. I have been looking for but I am not sure which broth medium would...

12 June 2017 2,807 4 View

Sutter electrode holder leaking after applying positive pressure. How to fix?

I am using a Sutter electrode holder for my patch clamp experiments, but I'm having trouble keeping positive pressure inside my electrode due to a leak out of the back of the holder. I have added...

02 March 2021 5,829 1 View

What thickness need for ITO to use as conductive layer?

I want to do RF sputtering of ITO on glass substrate using magnetron sputtering. what thickness do i need to make it good conductive layer to use it for PSC. Moreover, whats about thickness of...

01 March 2021 395 3 View

Why is my platinum counter electrode getting dirty during electrodeposition?

I am conducting anodic electrodeposition of MnO2 onto a stainless steel substrate, using a platinum strip as a counter electrode. This is done galvanostatically, with the current held between 5...

27 February 2021 1,829 3 View

How does charge on working electrode changes with rising potential?

During performing CV of a GCE or modified GCE, we rise the potential in the first half of the cycle and reduce it in reverse half. During the first half, what is the nature of charge on GCE or...

25 February 2021 7,994 3 View

How to troubleshoot Electrochromic Films and Electrochromic Devices?

I am trying to characterize an electrochromic system. The system uses ITO electrodes on glass, WO3 as the electrochromic film, and NiO as the ion storage layer. When I deposit NiO and WO3 and...

23 February 2021 9,592 2 View

How does elongation affect the resistance of an electrode?

What are the testing rate for electrodes recommended by ASTM for cochlear implants. I am currently doing the 15mm/min elongatio testing.

22 February 2021 1,515 1 View

Is that possible to do an impedance measurement without FRA module?

One of my colleagues said, "the impedance you can measure with the three electrodes and with the specific sequence varying the frequency" Is it possible to configure the potenciostat without the...

21 February 2021 418 2 View

Do you know this error? The experiment was stopped by a potential overload on Vs (auxiliary electrode)?

Hello everyone Do you have any information about this error 'The experiment was stopped by a potential overload on Vs (auxiliary electrode)' in Origamaster software? I tried everything possible,...

19 February 2021 3,152 7 View

Which compound is getting oxidized during bulk electrolysis with TFAA?

The experiment is really simple. When I do a bulk electrolysis with 1% TFAA (ACN solution) to get dihydrogen, what is going to be oxidized? (working electrode graphit, counter electrode platinum,...

18 February 2021 4,430 1 View

Not able to charge-discharge Li-ion coin cell at higher C rate ?

I am working on cathode material. I have made different Li-ion coin cell against Li metal using commercial available cathode materials such as LCO,LMO, LFP and NMC and also with the lab...

18 February 2021 1,450 3 View