предыдущая . ... На рисунке представлена схема ядерных реакция по превращению водорода в гелий, которые могут происходить при весьма высоких темпеартурах - более 60 млн. град. Роль катализаторов в этом случае играют ядра неона, натрия, магния и алюминия...
... Abundances of hydrogen and helium cannot be determined reliably from observations ... as numeric relative abundances assuming number of hydrogen atoms equals 10^12 ... C] = 8.56 means that 10^8.56 atoms of oxygen are related to 10^12 atoms of hydrogen ...
... Introduction Given the chemical composition (hydrogen abundance mainly), the mass ... used method for the choice of the hydrogen abundance profile in the model of the ... and mass, but with an arbitrary profiles of hydrogen abundance in the core ...
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... hydrogen is built into helium At a temperature of millions of degrees Yo ho, it's hot, the sun is not A place where we could live But here on Earth there'd be no life Without the light it gives We need its light We need its heat We need its energy Without ...
... ELEMENTS There's antimony, arsenic, aluminum, selenium And hydrogen and oxygen and nitrogen and rhenium And nickel, neodymium, neptunium, germanium And iron, americium, ruthenium, uranium Europium zirconium, lutetium, vanadium And lanthanum and osmium and ...
... The hydrogen profile in the star's interior is usually determined by course of the evolution, but we also consider models with arbitrary hydrogen profiles or diffusion profiles also. ...
... change S while modifications of opacities and hydrogen profile X(m/M) are limited in ... can be obtained with decrease of the opacity or/and the hydrogen content in the core ...
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