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#1
posted to rec.boats.cruising
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Batteries, again, sorry
Mark Borgerson wrote: In article , says... Thanks for the explanations. It's been decades since my last biology course. I'm not familiar with the kda term, Its kilo-dalton. One dalton is the mass of one Hydrogen atom. When you start talking about very minute masses - as in tangential flow (TFF) and diafiltration systems (like RO as an example)- daltons are a common unit, especially in the biotech world where TFF is commonly used for protein purification/extraction for example. Keith Hughes |
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#3
posted to rec.boats.cruising
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Batteries, again, sorry
Mark Borgerson wrote: In article , says... Mark Borgerson wrote: In article , says... Thanks for the explanations. It's been decades since my last biology course. I'm not familiar with the kda term, Its kilo-dalton. One dalton is the mass of one Hydrogen atom. When you start talking about very minute masses - as in tangential flow (TFF) and diafiltration systems (like RO as an example)- daltons are a common unit, especially in the biotech world where TFF is commonly used for protein purification/extraction for example. Must be more of a biochemical thing. In chemical oceanography, we generally used either AMUs or micro-moles. 1 Dalton = 1 AMU. Since there are historically a couple different definitions for AMU (physical and chemical), a Unified Atomic Mass Unit was identified, and that equals 1 Dalton. Neither is an official SI unit, but both are recognized by SI. In biochemistry (esp. proteins) the dalton is the unit that's used, and since UF/DF is really geared to the biochem industry, that's what they use as well. What good are units if you can't use them to confuse everyone? :-) Keith Hughes |
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#4
posted to rec.boats.cruising
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Batteries, again, sorry
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#5
posted to rec.boats.cruising
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Batteries, again, sorry
In article ,
says... wrote in : What good are units if you can't use them to confuse everyone? :-) Keith Hughes "If we knew what we were doing, we couldn't call it research!" Albert Einstein Maybe that works for mathematics. For the physical sciences, I would probably change it a bit: "If we knew the results of this experiement beforehand, we wouldn't call it research." You can know how to set up the experiment without knowing the results ahead of time. Mark Borgerson |
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