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Nitrogen

nitrogen

(Science: chemistry) A colourless nonmetallic element, tasteless and odorless, comprising four fifths of the atmosphere by volume. It is chemically very inert in the free state, and as such is incapable of supporting life (hence the name azote still used by french chemists); but it forms many important compounds, as ammonia, nitric acid, the cyanides, etc, and is a constituent of all organised living tissues, animal or vegetable. Symbol N. Atomic weight 14. It was formerly regarded as a permanent noncondensible gas, but was liquefied in 1877 by Cailletet of paris, and Pictet of geneva.

Origin: L. Nitrum natron _ -gen: cf. F. Nitrogene. See Niter.


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Re: cryogenics?

... Trehalose synthesis and other metabolic changes take some time, though, so your water bear will not survive if you simply drop it into liquid nitrogen.

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by biohazard
Tue Aug 18, 2009 5:58 am
 
Forum: General Discussion
Topic: cryogenics?
Replies: 3
Views: 55

cryogenics?

... can be easily frozen and succesfully thawn after decades, and probably after a nearly limitless amount of time if storen properly (e.g. in liquid nitrogen or colder). However, currently there are no means to cryogenically store bigger animals, not to mention warm-blooded mammals such as humans. ...

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by biohazard
Mon Aug 17, 2009 6:02 am
 
Forum: General Discussion
Topic: cryogenics?
Replies: 3
Views: 55

Cryonic freezing

... but instead alter their cellular fluids in a way that prevents them from completely freezing over. That is, you cannot store a frog in a liquid nitrogen and bring it back to life. I'm not sure which creature is the largest thing that you can actually freeze to -200 or so Celsius (which would ...

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by biohazard
Mon Aug 03, 2009 3:21 pm
 
Forum: Human Biology
Topic: Cryonic freezing
Replies: 5
Views: 1394

Freezer Inventory Software – Selen Freezer

... sample) are viewed within one window • highly flexible freezer organization: from table type freezer with trays to disorganized shelves and radial nitrogen tanks! • flexible material types: customize your specific material types • automated control of expiry data: always reorder in time • no more ...

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by Selensys
Thu Jul 09, 2009 1:58 pm
 
Forum: General Discussion
Topic: Freezer Inventory Software – Selen Freezer
Replies: 0
Views: 119

Which algae is the best in absorbing carbon compunds?

Hi all I just want to know, among various algaes present, which one is more helpful in absorbing the various carbon and nitrogen compounds from atmosphere. Thanks in advance:)

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by krupala
Sat Jun 27, 2009 8:24 am
 
Forum: Botany Discussion
Topic: Which algae is the best in absorbing carbon compunds?
Replies: 0
Views: 146
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