Why?
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...
06 July 2019 2,070 4 View
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...
09 October 2017 2,668 3 View
There are some diacetylenes which undergo polymerization reaction upon exposure to UV radiation. What property of the material is responsible for their UV sensitivity?
05 June 2017 3,097 4 View
The shift in Raman peaks implies increase or decrease of conjugation length of polydiacetylenes?
03 April 2017 1,814 3 View
If we use 10,12 pentacosadiynoic acid for a reaction, is it mandatory to purify it before use? How can it be purified, without loosing its color sensitivity?
02 March 2017 1,810 1 View
During radiation induced polymerization of diacetylenes will it be useful to prepare monomers in nano range to increase the chain length.
11 December 2016 6,857 4 View
Diacetylenes are a conjugated system consisting of two triple bonds. The solid state polymerization of diacetylenes proceeds as 1,4-addition to the conjugated triple bonds and gives rise to...
06 July 2016 8,754 1 View
Approximate concentrations are require in compared with the WHO permissible limts
11 August 2024 2,723 1 View
I am developing a predictive model for a water supply network that involves 20 influencing points. However, I only have historical data for 10 out of these 20 points. I would like to know how to...
10 August 2024 4,005 2 View
How do interactions between the biosphere, the carbon cycle, and the water cycle impact global warming and interaction between the atmosphere and the hydrosphere?
09 August 2024 3,291 2 View
One can try to generalize the Vandermonde determinant in the following direction: Let $A$ be any symmetric $n$-order square matrix. Consider its powers' diagonal elements $(A^k)_{ii}$ and...
08 August 2024 6,690 1 View
I have protein-membrane simulations (PDB, PSF, DCD) and have noticed that water molecules near the protein are not visible in the simulations. How can I fix this issue? Is there a way to place the...
04 August 2024 1,200 2 View
Why is nonpoint source pollution potentially more harmful and difference between point and nonpoint sources of water pollution?
01 August 2024 1,180 2 View
How do living organisms play a role in the water cycle and why is nonpoint source pollution potentially more harmful than point source pollution?
01 August 2024 7,061 2 View
Hi, I'm curious to know if data on chemical compounds from PubChem, such as water solubility properties, can be used to train a machine learning model for commercial purposes. Will this infringe...
30 July 2024 8,707 1 View
Water scarcity is a significant issue in arid and semi-arid regions due to limited rainfall and high evaporation rates. To address this challenge, various strategies and practices have been...
28 July 2024 7,611 2 View
Water scarcity in arid and semi-arid regions necessitates the development of innovative solutions for water harvesting. Researchers and engineers have been exploring various advanced materials...
28 July 2024 594 6 View
