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Whole-body counter

whole-body counter

Shielding and instrumentation, usually involving more than one detector, designed to evaluate the total-body burden of various gamma-emitting nuclides.

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How Does Natural Selection Create Ordered Variation?

as Cat wrote, the counter-conditions, even if they were opposite (highly unlikely), will only very rarely lead to removal of exactly the trait which was beneficial before. Rather, some counter-balancing new trait will evolve. And thus ...

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by JackBean
Wed Jan 22, 2014 9:12 am
Forum: Evolution
Topic: How Does Natural Selection Create Ordered Variation?
Replies: 7
Views: 3800

Home Work Question

Sue has heard that taking an over-the-counter ‘energy’ pill, which contains as much caffeine as a strong cup of coffee, makes people feel alert and ‘speedy’. She wonders if taking this pill will make a difference to the reaction times of people ...

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by zak
Tue Dec 10, 2013 12:08 pm
Forum: General Discussion
Topic: Home Work Question
Replies: 12
Views: 4630

which mechanism triggers the first cell differentiation?

... a hollow sphere of cells, called a blastocyst but do not explain why they begin to specialize. I could imagine ⋅ that a cell has a "counter" on the number of divisions which triggers differentiation after a given amount of divisions ⋅ or a chemical substance (either ...

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by WoJ
Mon Jul 22, 2013 6:18 pm
Forum: Cell Biology
Topic: which mechanism triggers the first cell differentiation?
Replies: 4
Views: 2924

mutations and dependencies

... I should have addressed it at appropriate thread. In any case, this user doesn't believe in evolution and I also wanted to see how he would counter the content of the paper.

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by RabbitPhilosopher
Sat Jun 22, 2013 8:31 pm
Forum: Evolution
Topic: mutations and dependencies
Replies: 29
Views: 21990

Why don't exercise make you stupid?

... permanently destroy your brain cell, as human brain cell does not regrow. So if exercise does make you smarter, does the increase in oxygen flow counter the effect of damaged brain cells or am I getting it all wrong. I have tried to find peer review journal that discuss this issue to no avail, ...

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by f24u7
Fri Jun 14, 2013 10:02 pm
Forum: Human Biology
Topic: Why don't exercise make you stupid?
Replies: 0
Views: 705
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