Have you used Cyrene (dihydrolevoglucosenone) to dissolve PVDF?

I noticed in C&EN that a bio-derived solvent called Cyrene has been developed in hopes of it replacing DMF or NMP. Has anyone tried to dissolve PVDF in Cyrene? If so, what were your results?...

23 February 2020 8,032 2 View

R: How to cut off / drop rows of a column after reaching a specific value the first time?

I have the following problem: In a table with multiple coulumns I want to cut off / drop / disable all rows of one column before and after reaching specific values. The tricky part is, that "="...

16 February 2020 2,288 4 View

What are typical safety values for electrical current and field strengths in active implantable devices?

08 August 2017 9,441 2 View

What are typical safety values for electrical current and field strengths in active implantable devices?

07 August 2017 8,887 2 View

Contact dermatitis to ECG electrodes during long-term wear

What is the percentage number of people (in a clincial sub-population) developing irritant or allergic contact dermatitis to wet ECG electrodes? Are there gender differences or differences between...

06 July 2017 3,523 3 View

Does anybody know the light absorption coefficient of sebum and sweat?

20 March 2017 2,530 1 View

Does anybody know the light absorption coefficient of sebum and sweat?

02 March 2017 1,454 1 View

Can someone identify these symptoms in lemon leaves??

Plants are young (tree nursery). Apical leaves are affected.

30 September 2016 9,256 13 View

Is there a method for background subtraction or a way to compensate differences between two electrodes due to production in EIS measurements ?

We would like to develop a EIS based protocol for detection of an antibody. For this test we will need to measure two electrodes. One was incubated with the sample and the other with a...

05 June 2016 7,828 6 View

Is anybody interested in a collaboration to test the first medical avatar of the human arterial tree?

16 April 2016 9,172 4 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

What can be use to mop up heavy metals from vegetables or soils in quarry mining site?

It has been established that quarry mining site polluted and contaminated it's environment with heavy metals, these affects the crops and vegetables planted in the area. The possible solutions to...

12 February 2021 1,155 5 View

How can I transform 50 kb plasmid into ecoli?

I must put 50 kb plasmid into ecoli strain. I think 50 kb is too big for heat shock with ecoli. Is that correct? Will electroporation work? Or do I need to use cos sites and lambda phage...

22 January 2021 8,612 3 View

Disposing Congo Red Agar?

Hi all, Hope you are well. My lab is planning to use some Congo red agar (0.01%) for Shigella flexneri, and we are wondering how do you dispose of the used agar plates. The Shigella contaminated...

13 January 2021 9,823 2 View

Oil Red staining AML-12, How much time did you wait?

Hi, Was wondering if any of you conducted an Oil Red on AML-12 cells, if so, after how much time did you executed this? Some studies call for 24hr and some for 18hr. For fat content analysis....

03 January 2021 8,613 1 View

Why below-ground ecology is still unexplored (majority of it) in our country ?

Below ground ecology or below ground ecological functions and ecosystems roles are very crucial and highly significant for any ecosystem especially for the forest ecosystems. The interaction among...

02 January 2021 6,912 3 View

Why is my blot transfer bad now?

I had been having beautiful blot transfers, but in the last few days I have ran into issues where there is high background staining and poor band resolution. The background staining is very...

23 December 2020 670 3 View

Under what conditions absorption and excitation spectra of a same species can be different?

I took absorption and excitation spectra of a same species in the same solvent. Ideally I should get the excitation spectra almost similar to the absorbance spectra. But I got the excitation...

13 December 2020 8,965 2 View

Did anyone do microglia Oil Red O staining?

I need to stain adiposome in microglia, but I don't know how to confirm that are really success? method : Removed media and washed cells with PBS, then added 4 % paraformaldehyde for 20 minutes at...

24 November 2020 2,359 2 View

Is PBS a suitable vehicle for testing the hemolytic activity of drugs in Ex vivo red blood cell hemolysis assay?

I am working with small molecules with antiplasmodial activity. I want to evaluate the hemolytic activity using a regular assay assessing hemolysis by measuring the absorbance at 414 nm.

19 November 2020 7,573 3 View