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Distribution coefficient

Distribution coefficient

The ratio of concentrations of a substance in two immiscible phases at equilibrium; the basis of many chromatographic separation procedures.

Synonym: partition coefficient.


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Re: Why is 1 absorbance of proteins ~ 1 mg/ml?

... concentration than 1 mg/ml. Proteins tend toward average values for the distribution of amino acids so a rule of thumb like A=1 for 1 mg/ml might ... an accurate measurement, you would need to know the molar extinction coefficient for the particular protein of interest at 260 nm. The absorbance ...

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by jonmoulton
Thu Feb 17, 2011 4:43 pm
 
Forum: Molecular Biology
Topic: Why is 1 absorbance of proteins ~ 1 mg/ml?
Replies: 1
Views: 4922

when to carry out a t-test and when to use mann whitney U?

... Mann-Whitney while t-tests are strictly valid only when the underlying distribution is Normal. Both test the hypothesis that the medians (Mann-Whitney) ... (Spearman) method to test the significance of the correlation coefficient. The same considerations apply: the non-parametric Spearman method ...

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by blcr11
Sat Apr 28, 2007 10:40 pm
 
Forum: General Discussion
Topic: when to carry out a t-test and when to use mann whitney U?
Replies: 1
Views: 1383

The Fiber Disease

... Fickian diffusion process with an Na+-concentration-dependent diffusion coefficient. Blackband and Mansfield (1986) used MRI to study the diffusion ... cement ratio and of the cure conditions on the water migration and the distribution of the three phases during curing is discussed. a b c Fig. ...

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by Nadas Moksha
Sun Oct 22, 2006 4:05 pm
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5561663

New type of protein-protein interaction

... from the nAM gel into the dAM gel took place. The apparent diffusion coefficient for the TT-complex in the dAM gel is about (1-4)ยท10-4 cm2/sec, ... operation of the Ca2+-sensitivity system and can change the TT-complex distribution in the whole gel volume. Home page of the project and full text ...

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by Vladimir Matveev
Mon Dec 13, 2004 11:54 am
 
Forum: Molecular Biology
Topic: New type of protein-protein interaction
Replies: 0
Views: 4258


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