Results 181 to 190 of about 147,293 (357)
Abstract Plutonium was discovered and first synthesized in the early 1940's. Several isotopes of plutonium are used in nuclear technologies, 238Pu for heat generation and 239Pu for energy production and weapons. Both isotopes emit alpha particles, which pose a significant radiation hazard when incorporated into the body.
Scott C. Miller
wiley +1 more source
Aquifer Characterization and Groundwater Potential Evaluation in Sedimentary Rock Formation [PDF]
Muhammad. Ajaz Ashraf+3 more
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Abstract Hybodontiformes was a diverse, successful, and important group of shark‐like chondrichthyans known from a variety of ecosystems. Some representatives of the order had a wide palaeogeographic distribution, as is the case with Priohybodus arambourgi. With a multicuspidate crown, P. arambourgi was the first hybodontiform to develop fully serrated
Estevan Eltink+5 more
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Application of the modified Q-slope classification system for sedimentary rock slope stability assessment in Iran [PDF]
Mohammad Azarafza+6 more
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Abstract Most carnivorans and all modern felids have ossified bacula; however, no machairodont baculum has ever been identified. This is true despite the many fairly complete skeletons found around the world of several sabertooth taxa. Although the bacula of modern felids are much smaller than those of canoids (even the least weasel's baculum is longer
Adam Hartstone‐Rose
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Carbonate formation and fluctuating habitability on Mars. [PDF]
Kite ES+9 more
europepmc +1 more source
Manifestation features of near-surface sedimentary rock electric and acoustic responses on seismic waves from earthquakes [PDF]
Pavel Muratov+2 more
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China shares fossil treasures with the world
Abstract China has been a rich source of fossils for nearly a century, beginning with the discovery of so‐called Peking man (Sinanthropus pekinensis), known today as Homo erectus pekinensis in the mid 1920s. The first Chinese dinosaurs were described in 1929, the sauropod Helopus (now Euhelopus) and the ornithopod Tanius, described by the Swedish ...
Peter Dodson
wiley +1 more source
Paleoenvironmental reconstruction of the Middle Ordovician Majiagou Formation in the northeastern Ordos Basin and its effect on organic matter enrichment. [PDF]
Wang Y, Wang X, Liu W, Zhang T, Zhang D.
europepmc +1 more source