X-Message-Number: 25469
From: 
Date: Tue, 4 Jan 2005 12:40:06 EST

Subject: Re: CryoNet #25462 Nuclear Magnetic Resonance Freezing is not Adiabatic
Demagnet

From: leo


> In the last weeks people on Cryonet seems to mistaken MRF whit Adiabatic 
> Demagnetisation, I think its something else, its seems to work like this, 
> They use a normal freezer with a build in Nuclear Magnetic Resonance 
> equipment, something similar as a Magnetic Resonance Imaging system, its 
> seems to be that this nuclear resonance gets water to supercool to -40 
> Celsius, and prevents crystallisation or keeps the crystals small

So it would be something as heating the hydrogen atoms in the water 

molecule... When crystals start to form, it is so fast than and in so many place
that 
they can't get large before reaching the site of the next one? Is this correct?

Now, my question is this one : Cells are far from being pure water, what is 
the effect of the many electrolytes on the freezing point? Any data on that?

You know, nuclear resonance with hydrogen can polarize only one atom out of 
one million, if there is such a large effect with this minute fraction, what 
about dissolved hyperpolarized gas in the 70 percent polarization level? Xenon 
129 would be particularly interesting for that.

Yvan Bozzonetti.


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