Hi, I would like to know if there are any free tool available to build chemical structures (not proteins)?

More Angshuman Bagchi's questions See All

How to Calculating Radioisotope production yield in MCNP?

We have 1 gm SrSO4 of density 3.7 g/cc. It has 0.174 gm S32 in it. It is irradiated in 1.6E11 flux in KAMINI reactor. What will be the yield of P32 in Ci/g? Reaction: S32(n,p)P32. This is the...

28 December 2023 7,326 2 View

Can anyone suggest any database for the rail vertical acceleration when train is passing over the railway bridge transition region?

My question is especially concerned with the bridge transition zone portion where the train at certain speed crosses the bridge main section to enter into the end transition zone. Is there any...

07 August 2023 1,947 4 View

While designing an autoencoder using UNET, how should you set the training parameters so that you get as O/P an exact replica image as the I/p?

For e.g :- I am giving as i/p an image into an auto-encoder which I have designed using UNET, but after training, in the O/P i am only getting an image which is not an exact replica for the i/p,...

28 September 2022 1,827 0 View

Problems in setting up the melting/solidification model in Ansys Fluent?

Problem I am trying to simulate the flight of a molten metal droplet through a gas environment. After the flight, the droplet hits a solid metal surface, spreads on it and solidifies. I want to...

02 June 2022 1,275 0 View

How to shift 0.8 micron radiation to 1 - 1.5 micron range ?

Is there any nonlinear process through which a 0.8 micron femtosecond laser pulse can be used to efficiently produce radiations in the range of 1 - 1.5 microns.

25 October 2021 2,992 7 View

Which book or article is suitable for beginners to understand Topological Groups?

It will help me a lot.

19 October 2021 9,095 9 View

I need this book for designing adiabatic fixed bed reactor for methanation. Can anyone recommend any source to get this book from?

Heterogeneous Reactions: Analysis, Examples and Reactor Design: Gas-Solid and Solid-Solid Reactions L.K Doraiswamy and M.M Sharma

21 September 2020 6,744 3 View

Is there a relation between feed flow rate and bed height for adsorption towers in TSA systems?

I am designing a TSA system for dehydration of SNG or Natural Gas to reach specifications (

06 August 2020 8,466 3 View

Ulta high-strength steel (Usibor 1500)- Al welding challenge?

A look at the current literature suggets only a handful of work being done on Usibor 1500 to Al 5XXX/6XXX alloy welding. The results available also indicate poor mechanical properties. Why is...

05 February 2020 303 1 View

In bridge abutment, during pushover, what should we plot to get force-displacement relationship in OPENSEES?

Applying displacement in the top of the abutment, and record the reactions at that point and other points along with abutment height.

21 December 2019 5,713 3 View

Should I include H atom into C3N5 when i am doing DFT modelling?

Hi all, my experimental XPS results shown that my C3N5 sample consists of N-H bond, hence in this case I should incorporate the N-H bond into my DFT modelling. However, I do notice several papers...

07 August 2024 8,414 2 View

Why chloride turns into chlorine gas in a Downs cell?

I imagine the battery drives the graphite into a carbocation, then chloride is oxidized to donate the electron to the carbocation, but what pushes the lost electrons of chloride to be shared...

03 August 2024 5,384 0 View

How to select target material for X-Ray generation?

Generally, the target material is Mo, Co, Cu, Fe, Cr, etc, so on what basis should we choose this material?

31 July 2024 5,824 0 View

What is the solubility of Iron (+3) in Bismuth Oxide?

Dear all: I am modifying Bismuth Tungstate with Hematite (Fe2O3), so I would like to know about how much Iron(+3) can form a solid solution in a Bismuth Oxide matrix. Best wishes Marco

29 July 2024 2,161 1 View

What is the relationship between protein structure and N or C terminal tagging choosing?

I want to do 2,3-butanediol dehydrogenase(BDH) enzyme purification to confirm its activity for 2,3-butanediol. Before that, I need to confirm which N or C terminal tagging is better for enzyme...

28 July 2024 366 3 View

What is the best method to detect the chemical composition of pollen ?

I have multiple small samples of grass pollen with anthers. I want to find a method to identify concentrations of proteins, lipids, and other various elements for these samples. any suggestions?

28 July 2024 5,331 1 View

What is the principle/mechanism behind aging of carbon (graphite) containing refractory mix for isostatically pressed refractories?

The resin bonded carbon containing refractories are aged before use. How time of aging is determined? And mechanism behind aging.

23 July 2024 3,205 0 View

Is it true that there is a physico-statistical meaning to the constant π other than circular geometry but the iron guardians of the SE deny it?

We assume that there is a physico-statistical meaning to the constant π other than circular geometry, but the iron guardians of the Schrödinger equation deny this. The iron guardians of the...

22 July 2024 4,285 9 View

How to estimate a protien's size using Chimera or PyMol? how correct this estimated can be?

I need to know the approximate size of my target protein for Negative-stain EM. I have an alpha-fold predicted structure of the protein. I do not see any turtorial on internet for estimating the...

21 July 2024 5,732 3 View

Hi dear researchers, do you suggest the best and shortest path for chemical synthesis and green synthesis of magnetite(Fe3O4)?

Suggest the best and shortest route for the chemical synthesis and and green synthesis of magnetite(Fe3O4) The chemical synthesis should contain the least dangerous chemicals along with full...

21 July 2024 2,476 2 View

Sutanu Mukhopadhyay

Hi. You can use Avogadro, this is a free, open-source, cross-platform software.

https://avogadro.cc/

Hamed Sadaghian

Hi. Please refer to the following links:

https://www.acdlabs.com/resources/freeware/chemsketch/index.php

https://chemaxon.com/products/marvin

http://www.kingdraw.cn/en/index.html

https://www.chemdoodle.com/

Sujata Roy

ArgusLab

Angshuman Bagchi

Thank you all