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Isotope

Isotope

(Science: radiobiology) One of several nuclides having the same number of protons in their nuclei and hence having the same atomic number, but differing in the number of neutrons and therefore, in the mass number. Almost identical chemical properties exist between isotopes of a particular element. The use of this term as a synonym for nuclide is to be discouraged.


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Re: Want to do NMR data analysis ....

... radiation. This energy is at a specific resonance frequency which depends on the strength of the magnetic field and the magnetic properties of the isotope of the atoms; in practical applications, the frequency is similar to VHF and UHF television broadcasts (60–1000 MHz). NMR allows the observation ...

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by danielhuerta
Fri Aug 30, 2013 11:14 am
 
Forum: Bioinformatics
Topic: Want to do NMR data analysis ....
Replies: 2
Views: 2058

Re: Molecular gene (genome) concept scientifically untenable

... one example of a chemical structure losing its properties when the structure is intact?” Since you’re a chemist, you surely know about the kinetic isotope effect. Nuclear decay will change the properties of a molecule, without changing chemical structure.” Dear AstraSequi, you are misleading people ...

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by PAWahid
Sat May 12, 2012 2:29 am
 
Forum: Molecular Biology
Topic: Molecular gene (genome) concept scientifically untenable
Replies: 12
Views: 20452

Re: Molecular gene (genome) concept scientifically untenable

... one example of a chemical structure losing its properties when the structure is intact? Since you’re a chemist, you surely know about the kinetic isotope effect. Nuclear decay will change the properties of a molecule, without changing chemical structure. But regardless, that is not what you said ...

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by AstraSequi
Fri May 11, 2012 9:31 am
 
Forum: Molecular Biology
Topic: Molecular gene (genome) concept scientifically untenable
Replies: 12
Views: 20452

Re:

... of most datation based on radioactive decay is already quite large due to other variable factor (including the exact proportion of the measured isotope at the time of formation of the experimental subject), and there is no way from what I read here to assess if that variation is going to change ...

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by Zenithar66
Thu Apr 07, 2011 1:11 am
 
Forum: Evolution
Topic: 5 best proofs of evolution
Replies: 170
Views: 220910

5 best proofs of evolution

... of most datation based on radioactive decay is already quite large due to other variable factor (including the exact proportion of the measured isotope at the time of formation of the experimental subject), and there is no way from what I read here to assess if that variation is going to change ...

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by canalon
Wed Apr 06, 2011 9:51 pm
 
Forum: Evolution
Topic: 5 best proofs of evolution
Replies: 170
Views: 220910
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