Nick J Walters

6 Questions 39 Answers 0 Followers

Questions related from Nick J Walters

What is the best way to merge multiple replicates of rheological data into a single curve?

I am looking for a way to create average curves for plotting rheological data in a log/log graph, similar to the way in which spectroscopy software averages multiple spectra (e.g. from mapping)...

10 March 2015 9,032 13 View

Any tips for prolonging gelation time of polysaccharide hydrogel?

I am currently working with hydrogels formed from gellan gum, a plant-derived polysaccharide which can be gelated using divalent cations such as Ca2+. An alternative method of gelation, which I am...

18 February 2015 9,292 4 View

Any advice concerning immunohistochemical, gene expression and other assays on 3D encapsulated cells?

I am planning to encapsulate cells within hydrogels and characterise their response to various matrix properties. There are obvious complications when working in 3D, which I am aware of, e.g. the...

30 January 2015 4,490 11 View

Can you recommend a method to time hydrogels gelation in small volumes?

I am looking for a reliable method for measuring hydrogel gelation time – one that gives more accurate results than tilting a gel until it appears to have finished gelling, or pipetting up and...

05 December 2014 5,159 11 View

What is the glass transition temperature of poly(proylene glycol-400) dimethacrylate?

I am struggling to find the glass transition temperature of poly(proylene glycol-400) dimethacrylate, PPG(400)DMA. If anyone knows where I could find this, or knows of a method to accurately...

05 December 2014 1,882 6 View

Biaxial flexural fatigue testing (cyclic loading) of dental composites

I am interested in measuring the fatigue of resin-based dental composites via cyclic loading, using a biaxial flexural test with a ball-on-ring jig. From the literature, there does not appear to...

26 March 2013 1,591 13 View