| 1. | Meselson and Stahl introduced a heavy isotope into some DNA and traced its distribution.
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| 2. | Harris worked in the Heavy Isotopes Production Group.
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| 3. | Highly sophisticated cascades of centrifuges are used to separate heavy isotopes of uranium hexafluoride gas from lighter isotopes.
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| 4. | Centrifuge technology spins uranium in a gas form at high speeds to separate the lighter and heavy isotopes.
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| 5. | Therefore, the only information needed is the abundance of bonds between rare, heavy isotopes within the carbonate mineral.
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| 6. | The specific nuclear reaction may be the fission of heavy isotopes ( e . g ., 235 U ).
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| 7. | Centrifuge technology takes uranium in a gas form and then spins it to separate the lighter and heavy isotopes.
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| 8. | In nuclear physics, the "'island of stability "'is the prediction that a set of heavy isotopes with a near Ubn.
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| 9. | Jahren and Sternberg's analysis of the oxygen content of the redwoods revealed " a bizarre absence of oxygen-18, the heavy isotope,"
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| 10. | The best fuel from an energy perspective is a one-to-one mix of deuterium and tritium; both are heavy isotopes of hydrogen.
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