How a threshold pump intensity in Raman laser should be calculated, if pump radiation passes 2 times (total ovelapping) through a Raman crystal ?

More Aleksandr A. Tarasov's questions See All

Why SNLO program does not opens on my computer ?

I used during a long time the program SNLO (Qmix) using computers with Windows XP, 7 and 10. First time this program worked also under Windows 11. Now (probably after the last system update) Qmix...

09 July 2024 7,243 1 View

Who can share the data of carbon dioxide sorption isotherms on Zn-MOF?

I am a member of the Department of Analytical Chemistry at Voronezh State University, and the topic of my research is the study of CO2 sorption on MOFs using quantum chemistry methods. Now we...

15 March 2024 8,056 0 View

Where can I get a world map of Arctic shelf solid minerals?

Good afternoon! Can anyone tell me where I can find a map of a particular country (or a complete world map) bordering the Arctic zone, and where the solid minerals located on the Arctic shelf will...

03 March 2024 6,200 1 View

Convergence problem with NLGEOM in ABAQUS for rubber type materials . How to overcome this?

There is a sealing with a rubber core and a polymer shell. The sealing is positioned into a groove and then is subjected to pressure from a one side. I've built a 2D model with plain strain...

26 February 2024 4,673 9 View

What free programs can be used to use neural networks to study adsorption parameters on sorbents?

I want to start using artificial neural networks to generalize results on adsorption, but I'm stumbling across paid programs.

19 February 2024 9,881 0 View

How will the reaction between proline and a sorbent with a carboxylic acid group occur?

Advise a method for the addition of proline to a sorbent, the sorbent is functionalised with a COOH group

04 February 2024 3,354 0 View

Proline functionalisation of carboxylated nanotubes?

Can anyone help, is it possible to functionalise SWCNTs-COOH with proline(aqueous solution)?

31 January 2024 1,914 1 View

Where can i read about algorithms which allow to find similarities in musical compositions?

I'm currently working on my leaving qualification paper and its main purpose is to develop my own algorithm of finding similarities in musical compositions but firstly i need to learn more about...

04 December 2023 8,086 1 View

Could you please advise whether it is necessary to vortex my Trizol lysate containing brain tissue for the purpose of achieving homogenization?

So far I've got very mixed opinions on the matter. I cannot use liquid nitrogen or beads for homoginzation, thereby, would it be ok to use vortex to homogenize tissue? I duobt that it would damage...

03 December 2023 1,024 1 View

Someone has an experience to work with Genesis software for EDAX EDS detector?

Could anyone help me to realize how to get unnormalized EDS results in Genesis?

13 August 2023 8,506 2 View

Which type of compound does lamda max of 218 indicate in a uv-vis spectrum of a partially purified compound through column and TLC?

A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...

11 August 2024 9,801 2 View

Using OBD technique i am trying to measure laser induced shockwaves velocity i found that at start velocity increases and then decay?

i am unable to interpret why its increases in start as shown in figure

11 August 2024 2,179 1 View

Hello researchers Is this a random laser or just fluorescence?

I am using Rhodamine6G as gain medium and silver nanoparticles as scatterers on a microscope slide and laser input 532 nm comes from above.

09 August 2024 9,894 2 View

U you think We need a website software of Blackbody radiation law expert software?

A website software of Blackbody radiation law expert software can used through the following web site. http://39.105.188.151:3000/index

07 August 2024 1,706 0 View

How to understand this crystallographic phenomenon of low temperature crystals in zeolite?

During low-temperature testing, new diffraction peaks that appear could be indicative of several phenomena. In one of our tests, we observed notable new peaks around 40° and 45° in a specific...

06 August 2024 726 3 View

Could dyes amplify the spectrum of light to a specific wavelength?

I am interested to know the behavior of dyes toward light. Specifically, Blue dyes re-emit the spectrum, especially from the green zone (known as principal in LED lamps, and blue dyes are known...

05 August 2024 3,290 1 View

How can AI-driven personalized learning balance individual instruction with fostering social and collaborative skills?

This question tackles the complex issue of ensuring that while AI can tailor educational experiences to individual needs, it doesn't neglect the equally important aspect of fostering social...

02 August 2024 4,751 3 View

Can a Conventional 50W visible LED Lamp Emit UV Light?

I'm researching light sources and their UV emissions. I'm curious if a 50W, 7500K conventional LED lamp emits any UV light. I found that a 200W tungsten lamp can emit up to 1.5 mW/cm² at 350 nm....

31 July 2024 3,843 7 View

Why Powder XRD is performed after cruhsing a crystal if Single Crystal XRD analysis of the same crystal has been performed already ?

What information we can get from PXRD analysis other than from SCXRD analysis of a crystal ?

30 July 2024 6,261 4 View

How to know the b axis of a single crystal?

How to apply magnetic field parallel to b axis of any crystal

29 July 2024 4,083 2 View