04 November 2023 1 9K Report

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.

More Valentin Heller'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

Best rice cooker for antigen retrieval?

Hi, I have never really done any antigen retrieval before. I tried boiling brain sections in a microwave but that was just plain awful. I checked the questions here and generally online and rice...

18 November 2023 5,863 0 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

Similar questions and discussions
Is the black sediment consider as sand? If not, how can I filter it out?

Hi researchers! I'm working on soil texture analysis, and the end result for sand is doubtful because there is black sediment appearing after drying, as shown in the figure. Is it considered sand?...

30 July 2024 557 2 View

Where to start the Analytical model for Dry sliding wear of metal surface ?

I am doing research on wear mechanism of the additive manufactured metal parts under dry condition. Please share the reference to start the analytical modelling of the wear prediction.

29 July 2024 6,115 0 View

Masonry Interaction Module ABAQUS?

I am simulating interlocking / dry stacked masonry in Abaqus. I am using a friction coefficient of 0.6 for my model as it is stated in the previous research as well as in the base paper. The...

16 July 2024 5,047 0 View

Issues with Malaria Coated Nitrocellulose Membrane Releasing Moisture?

Hello, I am currently working with Malaria Pf/Pan nitrocellulose membranes coated for malaria detection. After drying the coated membranes in an Incubator (overnight at 37°C), I've noticed that...

16 July 2024 7,937 1 View

Why does total carboydrate content decrease when increasing the vacuum degree?

I have conducted a survey on the "effect of vacuum drying conditions on carbohydrate content of angelica.S". The result show that, when increasing the vacuum degree, the carbohydrate content first...

13 July 2024 592 1 View

How to convert ppm to μmoles/g?

Hello, I am trying to convert to convert ppm of a solution to μmoles/g of dry sample.

09 July 2024 7,081 1 View

What is the protocol for enzyme freeze drying?

what is the protocol for enzyme freeze drying?

09 July 2024 6,464 6 View

Collecting/storing plant stable isotope samples?

Hello! I am planning to collect plant leaf samples for stable isotope analysis. I will be collecting them from the field and storing fresh tissue on ice. I have heard that bringing along a food...

01 July 2024 9,125 1 View

Chemical composition of curing agent for PDMS (Sylgard 184 Kit) and solid percentage?

1- Please provide information about the chemical composition of curing agent for PDMS(Sylgard 184 Kit)? 2- what dry solid percentage is obtained for a ratio of 10 to 1(PDMS to hardener)?

30 June 2024 6,814 2 View

Do body proportions of sharks change after drying?

Dear colleagues, I would be grateful to anyone who can answer my two questions: 1. Do the proportions of the shark's body change after drying? In other words, is it possible to discriminate two...

30 June 2024 6,101 3 View

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