CryoNet #32272 - #32274

CryoNet - Thu 31 Dec 2009

    #32272: (REPUTATION TOO LOW) [Mathew Sullivan]
    #32273: open cell foam? [ettinger]
    #32274: Concord grape juice supplementation improves memory function [oberon]

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Message #32272
From: [email protected]
Subject: (REPUTATION TOO LOW)

<<< POSTER'S REPUTATION TOO LOW >>>

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Message #32273
From: [email protected]
Date: Wed, 30 Dec 2009 15:47:14 EST
Subject: open cell foam?

Yvan writes:
 
>What I was writing about is far simpler:
>It is a LN2 cryostat  lined with a kind of mineral "sponge".
>To use it, you fill it up with  LN2, a large part of it cool the "sponge" 
and
>get absorbed by  it.
>After some hours, the equilibrium temperature is reached.
>You  then drain the excess LN2 or let it evaporate.
>You have a dry cryostat  with a capability to remain LN2 cool for at least
>two week.
>I have  experimented with such a system, it work well.
>You can put it in any  position, there is no liquid spill, an important
>feature for  transportation.
>The system I have seen is loaded with near 8 gallons of  LN2 and has a free
>volume of 6 gal.
>I don't know if there are  larger systems on the market.
Yet, even if there is no one, they could be  built simply with open cell 
foam
>in an ordinary LN2 cryostat.
 
I'm afraid I don't understand this. Is the foam itself (please describe) 
a heat sink? Is the nitrogen in the cells liquid or gaseous? In any  case,
could you please describe the details?
 
Thanks--
 
Robert Ettinger



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Message #32274
Date: Wed, 30 Dec 2009 16:38:32 -0800 (PST)
From: [email protected]
Subject: Concord grape juice supplementation improves memory function

[Goodbye to cognitive decline.]

Br J Nutr. 2009 Dec 23:1-5. [Epub ahead of print]
Concord grape juice supplementation improves memory function in older adults with mild cognitive impairment.
Krikorian R, Nash TA, Shidler MD, Shukitt-Hale B, Joseph JA. Department of Psychiatry, University of Cincinnati Academic Health Center, Cincinnati, OH, USA.
    Concord grape juice contains polyphenol compounds, which have antioxidant and anti-inflammatory properties and influence neuronal signalling. Concord grape juice supplementation has been shown to reduce inflammation, blood pressure and vascular pathology in individuals with CVD, and consumption of such flavonoid-containing foods is associated with a reduced risk for dementia. In addition, preliminary animal data have indicated improvement in memory and motor function with grape juice supplementation, suggesting potential for cognitive benefit in ageing humans. In this initial investigation of neurocognitive effects, we enrolled twelve older adults with memory decline but not dementia in a randomised, placebo-controlled, double-blind trial with Concord grape juice supplementation for 12
  weeks. We observed significant improvement in a measure of verbal learning and non-significant enhancement of verbal and spatial recall. There was no appreciable effect of the intervention on depressive symptoms and no effect on weight or waist circumference. A small increase in fasting insulin was observed for those consuming grape juice. These preliminary findings suggest that supplementation with Concord grape juice may enhance cognitive function for older adults with early memory decline and establish a basis for more comprehensive investigations to evaluate potential benefit and assess mechanisms of action.
PMID: 20028599

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