What simple batch process can you advise on testing different catalysts in a liquid phase?

More Valentin Romanovski's questions See All

Can you recommend an equation to predict the maximum slide thickness in function of the propagation distance, slope angle and slide properties?

We would like to predict the maximum slide thickness at a particular location along a laboratory slope from an initially triangular-shaped dry granular slide released as a dam break. Can you...

13 May 2024 6,316 0 View

Which is your experience with immersive virtual reality in medical education?

I would like to know what is your experience with immersive virtual reality in training programmes for nurses or doctors. If you have tried any immersive virtual reality simulator please send me...

03 March 2024 5,056 10 View

Seeking Suggestions for Finance Thesis Topic,do you have any ideas?

I am currently in the process of selecting a topic for my finance thesis, and I am seeking your valuable insights and suggestions. My area of interest lies in value investing strategis,corporate...

15 January 2024 5,576 7 View

Can you recommend an analytic model for the runouts of dry granular slides in function of the internal and basal friction angles?

We are running lab tests of dry granular slides at different scales and want to quantify the effect of the internal and basal friction angle on the maximum runout.

03 November 2023 9,097 1 View

Upper Cretaceous planktonic and benthic foraminifer from Costa Rica, a good recognition?

Hi everyone. As I am not a foraminifera specialist, and quite new in studying upper Cretaceous deposits, I have a question for you. I "recognized" in these 4 pictures: - Rugoglobigerina rugosa -...

15 August 2023 3,994 1 View

Any idea of what this Upper Cretaceous foraminifera form could be ?

This foraminifera is the only specimen found in a Maastrichtian small isolated carbonate platform in Costa Rica, Central America.

02 August 2023 2,012 6 View

How to prepare highly concentrated emulsion of magnetic fluid in water?

Dear colleagues Recently, I decided to reproduce the approach for the synthesis of magnetite/polystyrene microparticles via emulsion polymerization developed by dr. Gu lab. I used this...

12 June 2023 3,409 2 View

Could you please the two profiles, since I am the same scientis Christian Valentin, IRD?

/profile/Christian-Valentin contains 7 publications /profile/Christian-Valentin-4 contains 334 publications

06 May 2023 5,487 1 View

Does anyone know if A549 cancer cell line express cGAS-STING?

I was wondering if A549 cell line express cGAS and STING or if these genes are mutated in this cell line Thank you

26 April 2023 9,807 1 View

RAW ultrasound data in PWD (pulse wave doppler) mode?

Can anyone provide a recommendation as to which medical ultrasound device allows to RAW RF data in PWD mode? The most common example I see give access to RAW data in B-mode. But I'm are...

21 February 2023 6,937 6 View

What is the solvent for 8YSZ nano material?

I need to do some experiment with it in liquid form.

07 August 2024 613 3 View

Hi, please what is the best tool on Aspen plus that can help me get the best inlet temperature and pressure for cryogenic distillation?

I am trying to recover liquid CO2 from a mixture of 0.6 CO2, 0.3 N2, and 0.1 O2. My aim is to recover about 99% liquid CO2 at the bottom of the column and make sure the amount of gaseous CO2...

06 August 2024 4,611 0 View

How much Yeast should we add to fermentation media?

I have prepared a liquid broth containing Yeast (S. Cerevisiae) that i need to add from it to fermentation media of lignocellulosic hydrolysate. I need to know based on what parameters do we add...

06 August 2024 662 1 View

Need heterogeneous catalysts calcined before reduction?

Metal-containing heterogeneous catalysts often need to be calcined before reduction, so what are some examples of catalysts that perform better without calcination? What is the reason and how many...

05 August 2024 909 2 View

What is the best protocol for freezing the rat brain in preparation for protein detection by Elisa ?

What is the best way to freeze the rat brain - liquid nitrogen, Dry ice , isopentane - after isolation for later protein investigation by Elisa?

01 August 2024 1,722 1 View

I have calcined my catalysts without flowing air from the compressed air cylinder will there be any problem with my reaction if i use that catalysts?

FYI Catalyst is MFI zeolite Si/Al = 140,25.40.11.5,15 I am using this catalyst to study methanol to DME conversion

25 July 2024 2,486 2 View

How can we conduct DFT for solutions or mixtures ?

Can we conduct DFT studies for Ionic Liquids with Amines at various concentrations? If so, how can we proceed with these studies? Additionally, what parameters, besides IR, NMR, and HOMO-LUMO, can...

18 July 2024 319 1 View

Has anyone tried freeze flow samples in -80C freezer or liquid nitrogen before processing?

Our lab has some radioactive cell samples that need to be kept frozen for at least 30 days before flow analysis. For some reason, the samples stored in liquid nitrogen did not perform as well as...

15 July 2024 9,975 1 View

Alternative binders other than Nafion solution?

Hi Everyone, I plan to deposit a catalyst (TS-1@Co-PDA, in the core: TS-1 zeolite with a shell of Polydopamine designed with Cobalt) on a rotating ring-disk electrode (RRDE) to evaluate the...

29 June 2024 8,203 3 View

What are these round particles in cell culture flask?

I'm working with HEI-OC1 cells of the inner ear. Recently I'm seeing these round particles in the flask (picture attached), but cells' morphology and growth seems normal. However, there are...

26 June 2024 8,717 7 View

Patrick Killoran

I say this recently. it might be useful.

10.1021/acsmedchemlett.7b00165

Mirosław Grzesik

Catalyst in suspension? And what chemical reaction/reactions? Regards,

Valentin Romanovski

Catalyst in suspension or in inert loads. And any kind of chemical reactions. We are looking for a simplest to test our catalysts. Thank you