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29 November 2020 544 12 View

What properties (all possible properties) can we obtain by analyzing a thin film transmittance spectrum?

I know that we can find the thickness, n, k, rms, porosity ( n is calculated from the spectrum and porosity is calculated from n). I would like to know all possible properties either deduced...

08 July 2014 4,716 6 View

Is there anybody who has applied theoretical methods to find optical constants of thin films from transmittance?

I need the result of the calculations (thickness of the film, n, k, etc.) and the excel file of transmittance data to recalculate the optical properties and cross-check my method ( I want to...

10 June 2014 3,644 8 View

SDS page software for analysis?

I did sds page to determine the difference in protein expression between 3 types of vaccine , but i don't have scanner or densitometer available. . so i wonder if there is a software to analyze...

02 March 2021 6,270 3 View

Zno nano particles colour changed from white to grey in process of calcination any suggestions?

In the formation of Zno nano particles process, after drying at 120 degree C, my zno nano particles are completely white but when i calcine it for 450 degree C it converts into grey colour. i...

26 February 2021 2,435 4 View

Do I need to ask permission to use pictures for my questionnaire?

I would like to use some photo from a government website for my questionnaire. But, different photo is from the different owner. So, should I just get permission from that government body or still...

23 February 2021 1,631 3 View

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The regenerated cellulose film was prepared by zinc chloride/H2O system. The zinc chloride had been washed away in the regeneration process, and the wet film which was not dried had uniform...

18 February 2021 9,538 1 View

Onset of Photo Oxidation in Polymers?

Hi! I am looking for some specific information in regards to the minimum amount of UV intensity required to begin the photo degradation process in polymers. I understand each polymer is...

15 February 2021 7,703 4 View

Has someone used TTC agar overlay method and can help me?

I have tried to use TTC agar overlay method for a few times to identify respiratory-deficient yeast which were affected by EthBr. The problem is that cells which should have stayed white also have...

22 January 2021 585 10 View

Why isoelectric point (IEP) of alumina (Al2O3) dispersion decreases with the increasing of calcination temperatures?

We have prepared different alumina powders (fine/submicron-sized) from waste sources at different calcination temperatures (C.T.). From zeta potential-pH graph, we saw that IEP values decreased...

09 January 2021 9,404 3 View

What form of data analysis should I use for my pilot study?

I am currently conducting my final year dissertation which is looking at the efficacy of common police lineup practices. However, before I launch my study, I have put out a pilot study which is...

08 January 2021 4,376 4 View

Any suggestion on the methodology for Soil depth and ph mapping using machine learning ?

Hello, Please, I need your opinion. I want to map the depth of 20,000 hectares of land. I have sampling points of 20,000 with their respective depth attributes and photos of the topsoil(less than...

31 December 2020 4,325 3 View

How to calculate enzyme's energy of activation without rate constant (+excel)?

I want to calculate an enzyme's energy of activation, but I don't have the enzyme's molecular weight to calculate the rate constant or the pre-exponential factor A. This is part of an assignement...

25 December 2020 8,738 3 View