Ví dụ về việc sử dụng Isotope trong Tiếng anh và bản dịch của chúng sang Tiếng việt
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The number of neutrons determines the isotope of an element.
The most common isotope of hydrogen, protium, consists of a lone proton.
A gallium scan is a type of radionuclide or isotope scan.
Police will microchip and isotope ray people on highways.
The atomic weight of alumninum's only stable isotope is 27.
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One unusual property of Indium is that its most common isotope is very slightly radioactive;
The newly found isotope of neptunium was created by absorption of neutron into the uranium-239 and a subsequent beta decay.
Seaborgium is a synthetic element whose most stable isotope 271Sg has a half-life of 1.9 minutes.
Mass spectrographic and isotope studies have shown that potassium, rubidium, and especially cesium are most efficiently taken up by cancer cells.
The question thus becomes would afull meltdown turn lose this deadly isotope, as well as others, on the surrounding environment?
The most useful uranium isotope for nuclear power is uranium-235, which today accounts for just 0.7202% of any given natural sample of uranium.
To make matters more difficult,Tri Alpha is aiming to use a fuel made up of the isotope boron-11 and a proton, rather than the more basic deuterium-tritium blend.
It is thought that this isotope could provide safer nuclear energy in a fusion reactor, since it is not radioactive and would not produce dangerous waste products.
Now, this sounds more heroic than it actually is,because the technology to use radio isotope thermal generators wasn't available in Europe at that time, so there was no choice.
In particular, 99Tc(half-life 211,000 years) is used in corrosion research, because it is the decayproduct of the easily obtained commercial 99mTc isotope,[1] which is its nuclear isomer.
A radionuclide(sometimes called a radioisotope or isotope) is a chemical that emits a type of radioactivity called gamma rays.
Since it was known that the atomic weight of oxygen was almost exactly 16 times as heavy as hydrogen, Raymond Birge,and Donald Menzel hypothesized that hydrogen had more than one isotope as well.
This process of changing the isotope of one element(designated as the parent) into the isotope of another element(referred to as the daughter) is called radioactive decay.
Led by a research team from the Egyptian Museum and the University of California, Santa Cruz,the scientists used oxygen isotope analysis to examine hairs from two baboon mummies that had been preserved in the British Museum.
No odd-neutron-number isotope is the most naturally abundant isotope in its element, except for beryllium-9 which is the only stable beryllium isotope, nitrogen-14, and platinum-195.
John Arnold Cranston(working with Frederick Soddy and Ada Hitchins)is also credited with discovering the most stable isotope in 1915, but delayed his announcement due to being called up for service in the First World War.
Isotope labeling of the CO2 molecules revealed that the bacteria were indeed using CO2 to create a significant portion of their body mass, including all the sugars needed to make the cell.
Prior to 1959 both the IUPAP and IUPAC tended to use oxygen to define the mole, the chemists defining the mole as the number of atoms of oxygen which had mass 16 g,the physicists using a similar definition but with the oxygen-16 isotope only.
For isotopes with atomic mass unit values less than that of the most abundant stable isotope, 106Pd, the primary decay mode is electron capture with the primary decay product being rhodium.
Most relevant to chemostratigraphy in general was the discovery by Harold Urey andCesare Emiliani in the early 1950s that the oxygen isotope variability in the calcite shells of foraminifera could be used as a proxy for past ocean temperatures.
Kipp and his colleagues measured selenium isotope ratios in Lomagundi rocks formed at various places around the world, and then worked back to estimate the dissolved oxygen level in the shallow seas of this time.
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