仇恨
发表于 2025-3-26 22:07:55
Die Reinigung des Koksofengases,s Li, Be, B are destroyed more than produced by thermonuclear reactions while the amount of He produced by stars is not sufficient to account for its observed abundance. The problem of their nucleosynthesis is analyzed in Chapter VII.
detach
发表于 2025-3-27 02:48:55
The Chemical Composition of the Observable Universe, proportion of the chemical elements classified a century ago by the Russian chemist Mendeleev. Before displaying the main trends of this chemical composition, let us briefly recall the main techniques which are used by the astrophysicists to determine this composition.
男学院
发表于 2025-3-27 08:17:49
Thermonuclear Reactions and Nuclear Reactions in Stellar Interiors,this book we assume that the target nucleus is the heavier nucleus. The effects we are discussing here are symmetrical and remain the same if the target is the lighter one. When the final products of the nuclear interaction are identical to the initial ones, it is called ‘scattering’. The scattering
browbeat
发表于 2025-3-27 09:48:51
Formation of the Heavy Elements: ,, ,, and , Processes,ons and quasi-equilibrium processes occurring during either the quiet phases of the stellar evolution (Chapter IV) or the explosive phases (Chapter V). However, light elements (A < 12) and elements with an atomic mass A > 65 are not significantly synthetized by these processes. Light elements such a
凶猛
发表于 2025-3-27 13:39:24
Nucleosynthesis of the Light Elements,γ) or (p, α) reactions occurring at temperatures higher than ~10. K. For instance, in the H burning cycle the D(p, γ). He reaction is so rapid compared to the other chains of the cycle that the D/H equilibrium ratio is ~10. i. e., 10. times the observed abundances of D. In the normal course of the n
modish
发表于 2025-3-27 17:52:04
http://reply.papertrans.cn/16/1554/155398/155398_36.png
anagen
发表于 2025-3-28 00:43:13
Chemical Evolution of Galaxies,s as well as the location of these nucleosynthetic events. At the beginning of this monograph, the evolution of the matter which constitutes the celestial bodies such as planets, stars and galaxies was briefly recalled. During this evolution, which lasted about 10. yr, the nucleosynthesis has modifi
规范要多
发表于 2025-3-28 05:05:30
http://reply.papertrans.cn/16/1554/155398/155398_38.png
愤怒事实
发表于 2025-3-28 09:50:49
Reliability in Regional Drought Studieshodology that is very general and flexible, consisting by two different but complementary approaches. The first one takes into account the hydrometeorological features of droughts and makes their characterization through a number of random variables. The second approach gives a means of applying the
intellect
发表于 2025-3-28 11:20:15
https://doi.org/10.1007/978-981-99-7765-9 to focus rare sources. Collaboration enables a holistic approach to production and can be seen as a new paradigm for production research. An example for the new paradigm of process chain development is given: the decreased process chain for the production of gears for the automotive industry. Mater