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

How can I make stacked bar graph with scatter plot?

I want to make a stacked bar graph with showing each data value as dots. I tried with graph pad prism, version 6, but could not succeed. Does anyone have tried before making such graphs?

01 March 2021 9,383 1 View

Can anyone name this graph type?

I've attached a recreation of this graph type that I need to make for study reports. The clients have sent them to us in the past, but I am trying to make the reporting process more streamlined,...

15 February 2021 9,795 3 View

Is there any effective FEM solver to perform simulation of balloon inflation with large deformation (e.g. 300% strain)?

Hi! Thank you for your time, attention, and support. I am currently using FEM solver Abaqus to perform a set of balloon inflation simulations, trying to understand the deformation shape, stress,...

14 February 2021 2,524 4 View

Are there any differences between setting automatic or manual number of measurements in DLS?

When doing measurements in DLS (either size or zeta potential), I have the option to input an automatic number of measurements or to set it manually. My question is: is there a drawback in...

08 February 2021 9,423 6 View

Can anyone tell me how can I reduce the particle size of a polymer micelle ?

Currently, I am working on the PLA-PEG polymer micelle for the drug delivery system. The micelle I have synthesized I got avg 900nm particle size on DLS. I want to reduce the particle size below...

31 January 2021 2,684 5 View

Coupled hydric and mechanical equation COMSOL?

hello i am trying to study the mechanical deformation due to the humidity on a 3d volume formed of 2 phases. my equation are dw/dt =grad(Dm*div(w)) and the mecanical is sigma=E*beta*nabla(w)....

27 January 2021 5,201 1 View

What dilution do I use for my GNP solution UV-Vis and DLS characterization?

I have prepared gold nanoparticles using the citrate reduction method in the lab. I need to characterize them using UV-Vis and DLS, by how much should I dilute my sample for using it in the...

26 January 2021 530 5 View

Just face a Comsol issue dealing with magnetically hyperelastic material?

Hello all, I am just newly doing a simulation to test the deformation status of a magnetized rubber-like material, which is in-compressible, under a shifting magnetic field. Try to find the...

22 January 2021 7,427 2 View

Why is Abaqus showing me the deformed and undeformed shape at the same time?

17 January 2021 8,952 3 View

Experiment or Quasi Experiment Design?

What kind of study design are we talking about? Subjects are randomly assigned to one of three groups. In addition, a moderator and a mediator are collected as continuous variables. Is this an...

15 January 2021 1,809 4 View