How do I use a 50%H2-50%Ar gas mixture safely?

More Mirosław Stygar's questions See All

Is the definition of reaction rate necessary to describe the course of chemical reactions in the reactor?

There are several different definitions of the rate of a chemical reaction in the scintific literature. However, in the case of a quantitative description of the chemical process in the reactor,...

13 August 2018 4,527 15 View

Is the equation in form: r = k(Xe-X)2, often used to describe the kinetic data of sorption processes, is only an empirical equation?

In the description of the kinetic data of sorption processes, equation in the form: r = k(Xe - X)2, (#) and the equation obtained on the basis of mass balance of the batch process: dX/dt = r, X(0)...

18 April 2018 4,999 0 View

I am working on skin cancer detector and need to train my algorithm. Where to find a database/images with examples of normal moles?

It is quite easy to find databases with images of skin cancerous, non-typical moles. It is however, quite difficult to find images with normal moles.Obviously you need both types to train your...

08 June 2017 908 3 View

The catastrophe theory in analysis of real estate market dynamics? What do you think?

The catastrophe theory, also known as the morphogenesis theory, was first introduced in 1971 by the French mathematician Rene Thom. The theory considers dynamical systems described by...

14 April 2015 7,529 6 View

Do you know if postdiapause copepodits of freshwater Cyclopoids may feed on newborn cladocerans (eg. Daphnia, Bosmina etc.)?

I am trying to hatch cladocerans from lake sediment samples but I am afraid they may be eaten by postdiapause Cyclopoids (most likely copepodits in the fourth stage) that I can not get rid off....

14 January 2015 2,456 4 View

Where can I get ITM-26 alloy?

I'm looking for some metallic powder of ITM-26 alloy (from Plansee). Does anyone know where I can get this material (as a final product or semi-manufactured product for further process)? It can...

16 May 2014 2,044 2 View

Does anyone know where I can get Fe-Cr (approx. 30% Cr) alloys (with only these two elements)?

Where is possible to get such materials? I need a plate big enough to prepare using EDM technique 2 or 3 circular samples; 2 cm diameter, 1-1,5 mm thickness.

27 February 2014 10,054 3 View

What are the applications for using Micro-EDM technique and Micro-EDM cutting/drilling device?

Are there any companies that use components produced using this technique?

08 December 2013 4,028 6 View

What are the applications of CFD in cardiology?

There is a lot of research showing that CFD is beneficial to diagnose cardiovascular diseases. For example low wall shear stress in human aorta indicate the potential risk of aneurysms or rupture....

14 November 2013 7,286 3 View

Do you think your OpenFOAM cases (or runs) can benefit from GPU acceleration?

My group is working on GPU-based acceleration of OpenFOAM (see http://goo.gl/LECn5o).

14 October 2013 8,888 3 View

What precautions should be taken while handling S. aureus enterotoxin Type B in the lab?

I would like to understand potential safety concerns while handling SEB in the lab. Especially while working in animal house facility. Would like to know precautions for handling. Sigma MSDS...

07 August 2024 6,034 3 View

Research Methodology - Impact of Corporate Reputation on Stakeholders Behaviors?

Please can anyone support with the survey questions based on RQ measures and propose how to do it in FMCG industry and include as well the role of brand equity Thanks

06 August 2024 949 0 View

Anyone having idea about VN primer for miRNA primer design ?

How to design VN primer to attach with universal reverse primer

05 August 2024 2,116 3 View

Project/Experimental assistance ？?

Do experiments on behalf of Our Business: Laboratory animal rearing Animal modeling Experimental animal behavior detection, image ultrasonic detection, electrophysiology platform Organoid...

05 August 2024 5,829 1 View

Why results of ROS flurescence are negative as there was no bacteria within?

Hello. I am working on ROS production of two systems: system A is cerium oxide and hydrogen peroxide, system B is cerium oxide nanoparticle, hydrogen peroxide and potassium bromide. I did some...

04 August 2024 5,974 3 View

Does long-term culture of murine Monocytes result in macrophage differentiation?

Hi, I am isolating monocytes from the bone marrow using the Mouse Monocyte EasySep kit. I want to treat these cells and monitor expression of specific markers over the course of 10 days. I will...

04 August 2024 7,282 2 View

How to Transform my handy-wavy explanation of why group I/II metals oxides in aqueous solution are basic into a rigorous argument?

I heard an explanation about something being a better proton acceptor or lone pair donor but that doesn't make sense. I couldn't explain in in terms of acid-base theory. The hand-waving way I saw...

03 August 2024 9,918 0 View

Short Synthesis of Graphene Oxide from Natural Graphite Flakes?

I am in search of a modified Hummer's method, which can be used to synthesis graphene oxide within 6-8 hours. As I am a student it is not allowed for us to work after 5 in the laboratory. So I am...

01 August 2024 8,368 2 View

Should I remove an item from a scale to raise Cronbach's alpha and McDonald's omega or is it better to leave it if they are both over .7 already?

Hello! I have this scale which had 10 items initially. I had to remove items 8 and 10 because they correlated negatively with the scale, and then I removed item 9 because Cronbach's alpha and...

01 August 2024 4,606 7 View

What is the ionic radius of Hydrogen anion? And how to know the exact ionic radii of the elements?

I'm trying to calculate the tolerance factors of the hydride perovskite and the value calculated by me and the reported values are contradictory. Need more clarity in using the correct ionic radii...

01 August 2024 2,614 1 View

Mushtaq Ahmad

Attached document may be helpful. Well ventilated laboratory shall be used to get rid of unused gas.

ARGON/HYDROGEN GAS MIXTURE

MATERIAL SAFETY DATA SHEET

Prepared to U.S. OSHA, CMA, ANSI and Canadian WHMIS Standards

Amir Madsoud Dayaghi

Also, consider blubber in downstream to ensure gas doesn't leak.

Please flow Ar (inert gas) before flowing H2.

Mirosław Stygar

Of course I have one, but I don't know how to deal with unreacted hydrogen.