Ví dụ về việc sử dụng Isotopes trong Tiếng anh và bản dịch của chúng sang Tiếng việt
{-}
-
Colloquial
-
Ecclesiastic
-
Computer
The Earth and Moon have identical isotopes.
Students might also choose to attend a New Mexico Isotopes Baseball game or New Mexico Lobo's Football game.
Both research teams dated the zircon grains by analyzing their isotopes of uranium.
There are 29 isotopes of copper, 63Cu and 65Cu are stable, with 63Cu comprising approximately 69% of naturally occurring copper, both have a spin of 3⁄2.
In nature, chromium exists as three stable isotopes: 52Cr, 53Cr and 54Cr.
Mọi người cũng dịch
In 1902 Frederick Soddy(who later discovered isotopes) and Ernst Rutherford jointly discovered that uranium and thorium radioactively decayed at a constant rate.
Commercial units include Radio Carbon Dating, Stable Isotopes and DNA Sequencing.
To be perfectly accurate, different isotopes do behave slightly differently because the more massive atoms move more sluggishly and therefore react with a tiny bit less intensity.
The company has developed anew tracking system that doesn't rely on isotopes and satellites.
Data will hopefully be released later this year about the isotopes of methane, which can tell us how much might be produced by microbes," Dr Chopra said.
Antarctica is a great place to look for such dust, because it's one of the most unspoilt regions on Earth,making it easier to find isotopes that didn't originate on our own planet.
This centre will produce stable isotopes in various ways, and its operation will begin within the next two years", AEOI head Ali Akbar Salehi said as quoted by Iranian state television.
This tiny difference is used, for instance,to separate out the isotopes of uranium needed to build a nuclear bomb.
This long list of material- atypical isotopes like Helium-3 and potassium-40, and rare elements like iridium, thorium, and uranium- reveal again and again the same pattern.
For the study of technological processes and investigation of the conditions of service of various equipment find wide application of the so-called"tracers",i.e. radioactive isotopes of several elements, including cobalt.
With the development of AMS in the 1980s it became possible to measure these isotopes precisely enough for them to be the basis of useful dating techniques, which have been primarily applied to dating rocks.
Isotopes of carbon, oxygen, and nitrogen can be purified by chilling these gases or compounds nearly to their liquefaction temperature in very tall(200 to 700 feet(61 to 213 m)) columns.
The slight radioactivity of rubidium was discovered in 1908 butbefore the theory of isotopes was established in the 1910s and the low activity due to the long half-life of above 1010 years made interpretation complicated.
For the isotopes with odd numbers of nucleons, this immediately rules out a stable isotope of technetium, since there can be only one stable nuclide with a fixed odd number of nucleons.
Several geochemical proxy tools include long-chain organic molecules(e.g. alkenones),stable and radioactive isotopes, and trace metals.[1] Additionally, sediment cores can also be useful; the field of paleoceanography is closely related to sedimentology and paleontology.
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.
In 1966, after NUMEC had become a successful company, Shapiro formed a new business venture with the Israeli government,called Isotopes and Radiation Enterprises Limited(ISORAD), to build technology that could irradiate perishable fruits and vegetables and extend their shelf life.
Certain isotopes of oxygen and hydrogen in ice cores can determine the temperature in the past while pollen tells us which plant species were present and therefore gives us an indication of climatic conditions suitable for that species.
Naturally occurring gadolinium is composed of 6 stable isotopes, 154Gd, 155Gd, 156Gd, 157Gd and 158Gd, and 2 radioisotopes, 152Gd and 160Gd, with 158Gd being the most abundant(24.84% natural abundance).
This centre will produce stable isotopes in various ways, and its operation will begin within the next two years", AEOI head Ali Akbar Salehi said as quoted by Iranian state television.
To determine the ancient temperatures,the scientists measured the abundance of two rare isotopes bound to each other in fossil bivalve shells collected by co-author Linda Ivany of Syracuse University at Seymour Island, a small island off the northeast side of the Antarctic Peninsula.
The centrifugal separation of isotopes was first suggested by Aston and Lindemann[3] in 1919 and the first successful experiments were reported by Beams and Haynes[4] on isotopes of chlorine in 1936.
The remarkable consistency of the oxygen isotopes in the dinosaur's bones demonstrate that its body temperature never varied by more than about 7 degrees Fahrenheit, the North Carolina researchers wrote last week in Nature.
In biology, the ratio of carbon-13 and carbon-12 isotopes in plant tissues is different depending on the type of plant photosynthesis and this can be used, for example, to determine which types of plants were consumed by animals.
Due to the relatively long half-life of these Pu isotopes, these wastes from radioactive decay of bomb core material would be very small, and in any case, far less dangerous(even in terms of simple radioactivity) than the Pu-239 itself.