Apoorva Mittal

12 Questions 15 Answers 0 Followers

Questions related from Apoorva Mittal

In colorimetric analysis, can we compare absorbance measurement from spectrometer and optical density measurements from image analysis using scanner?

There are two most popular methods for colorimetric analysis i.e. spectrometer data and image analysis using a scanner. For example, in order to study the color intensity of films, I have measured...

02 June 2020 5,122 1 View

Can we expect a reduction in the population of particles in SEM images in the form of particles and after making their films?

I took scanning electron microscope images of my samples in powder form and after coating their films. In powder form, a large number of particles can be seen however, in the films only a few...

22 July 2019 8,647 3 View

Why is it difficult to perform acid amine coupling using EDC, DMAP and HOBt?

I had been trying acid amine coupling of a long carbon chain carboxylic acid with urea, I couldn't get the desired product by using EDC, DMAP and HOBt. TLC shows 2 spots, I had been isolating the...

24 November 2018 8,950 3 View

Which solvent is suitable for analysing the UV Vis spectra of a polydiacetylene compound?

I want to study UV Vis spectra of a polydiacetylene based compound. It is a polymer and is not soluble in most of the solvents. i tried dissolving it in ethanol, butanol, chloroform, DCM, THF, DMS...

26 October 2017 6,753 3 View

Is it possible for a compound to be highly UV sensitive but not x-ray or gamma ray sensitive? What can be the possible reason for this?

Is it true that the compounds which are UV sensitive should be sensitive to x-rays or gamma rays as well because the energy of x-rays or gamma rays is much higher than ultraviolet rays? If it is...

01 August 2017 5,022 12 View

What can be the possible reason of not getting any peak in XRD analysis of a sample?

The sample is not amorphous, it is crystalline. The literature reports distinct peaks. But in my sample, I am not getting a single peak. What can be the possible reason for this?

08 July 2017 3,381 14 View

What makes some of the diacetylene compounds highly UV sensitive?

There are some diacetylenes which undergo polymerization reaction upon exposure to UV radiation. What property of the material is responsible for their UV sensitivity?

17 June 2017 9,899 3 View

Can I use high temperature tube furnace only for vacuum drying?

I want to dry off the solvent from the sample by vacuum drying. Can I use tube furnace with no temperature setting only for vacuum drying?

13 April 2017 5,604 4 View

What precautions must be taken while handling a light sensitive polydiacetylene material in lab?

Some polydiacetylenes are extremely light sensitive and change color on exposure to light (room light, UV). What is the best possible way to handle them so that the rapid change in their color can...

17 March 2017 2,701 0 View

What are some good freely available softwares which can be used to analyse HU values of CT images?

I want to analyse CT images in my personal computer. I have the images in CD.

04 October 2016 344 6 View

Why do radiochromic films have high resolution?

In the literature it is said that the grainless nature of radiochromic films is responsible for their high resolution. What exactly does this mean?

27 September 2016 4,487 4 View

What is the dependence of sensitivity of a radiochromic film on its area, mass and thickness?

Is there any mathematical relation between the absorbed dose in a RCF and its area, thickness and mass? Are there any other factors as well which affect the amount of dose absorbed?

27 September 2016 7,468 3 View