Dictionary » S » Subtraction

Subtraction

subtraction

1. The act or operation of subtracting or taking away a part.

2. (Science: mathematics) The taking of a lesser number or quantity from a greater of the same kind or denomination; an operation for finding the difference between two numbers or quantities.

3. The withdrawing or withholding from a person of some right to which he is entitled by law.

thus the subtraction of conjugal rights is when either the husband or wife withdraws from the other and lives separate without sufficient reason. The subtraction of a legacy is the withholding or detailing of it from the legatee by the executor. In like manner, the withholding of any service, rent, duty, or custom, is a subtraction, for which the law gives a remedy.

Origin: L. Subtractio a drawing back. See Subtract, and cf. Substraction.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


fluoroscopy

... on differential penetration of X-rays into different tissues. b)Blood vessels can be highlighted without the need of a contrast medium. c)Requires subtraction techniques to produce a clear image of blood vessels. d)It does not allow constant imaging of blood vessels as interventional techniques ...

See entire post
by zak
Sat Dec 28, 2013 4:43 pm
 
Forum: Human Biology
Topic: fluoroscopy
Replies: 1
Views: 582

biology Fluroscopy

... on differential penetration of X-rays into different tissues. b)Blood vessels can be highlighted without the need of a contrast medium. c)Requires subtraction techniques to produce a clear image of blood vessels. d)It does not allow constant imaging of blood vessels as interventional techniques ...

See entire post
by zak
Tue Dec 17, 2013 10:26 am
 
Forum: General Discussion
Topic: biology Fluroscopy
Replies: 0
Views: 410

Problem with the normalization of PCR Ct values

Hi!! Thanks a lot for your replies! Probably I misunderstood the term "ratio". When dealing with exponents, division corresponds to subtraction... So, I will subtract the Ct values to get the ΔCt. These values are inserted to the statistical package. After the statistical analysis is ...

See entire post
by Tzia
Wed May 01, 2013 8:48 pm
 
Forum: Molecular Biology
Topic: Problem with the normalization of PCR Ct values
Replies: 5
Views: 2546

Quick Question !

... formation. If you mean, find a yeast cell which has defects in it's filiment formation, that's something else i guess. I've never heard of a subtraction library before - which is great as i now have a new search term to do more research on :) Thank you! Extract RNA from both regular and filiment-forming ...

See entire post
by Jonesy
Wed Dec 31, 2008 2:53 pm
 
Forum: Genetics
Topic: Quick Question !
Replies: 7
Views: 2966

Quick Question !

I think you got it right. Compare RNA from wild type yeast with yeast with defects in filament formation. You can do a "subtraction library"; extract RNA from both populations, create cDNA, and RT the driver, add adaptors marked with different colors to the two kinds of cDNA. ...

See entire post
by GreenDog
Wed Dec 31, 2008 8:45 am
 
Forum: Genetics
Topic: Quick Question !
Replies: 7
Views: 2966


This page was last modified 21:16, 3 October 2005. This page has been accessed 1,673 times. 
What links here | Related changes | Permanent link