Dictionary » T » Tantalum



(Science: chemistry) A rare nonmetallic element found in certain minerals, as tantalite, samarskite, and fergusonite, and isolated as a dark powder which becomes steel-gray by burnishing. Symbol ta. Atomic weight 182.0. Formerly called also tantalium.

Origin: NL. So named on account of the perplexity and difficulty encounterd by its discoverer (Ekeberg) in isolating it. See Tantalus.

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Please Help! Macromolecules

Hmm 180 MW is small, since that is the same as 1 mole of tantalum. My question is, at what MW would you consider macro?

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by MichaelXY
Thu Mar 13, 2008 11:27 pm
Forum: Molecular Biology
Topic: Please Help! Macromolecules
Replies: 9
Views: 4791

The Fiber Disease

... Plasmid DNA is extracted from the host bacteria purified and resuspended in distilled and deionised water. It is deposited on a chemically clean tantalum, lyophilised and placed in an UHV chamber for 24 hours before irradiation. After irradiation, plasmid DNA is retrieved from the UHV chamber ...

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by Nadas Moksha
Sun Dec 10, 2006 11:03 am
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6246367

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