Results 321 to 330 of about 1,304,888 (335)
Some of the next articles are maybe not open access.
Short-Lived Radioactivities and the Birth of the Sun
2000Now extinct short-lived radioactive isotopes were apparently extant in the early solar system. Their abundances can be inferred from isotopic effects in their daughter nuclei in primitive meteorites, and the deviation of these abundances from expectations from continuous galactic nucleosynthesis yields important information on the last nucleosynthetic ...
Donald D. Clayton, Bradley S. Meyer
openaire +2 more sources
Respiration and the Proof of Live-Birth [PDF]
openaire +1 more source
The denominator for maternal mortality—total births or live births?
BJOG: An International Journal of Obstetrics & Gynaecology, 2002openaire +3 more sources
Live-Birth in Theory and Practice
Transactions of the Medico-Legal Society for the yearÖ, 1903openaire +2 more sources