Perhaps most intriguingly, the presence of a ring could explain the onset of the Ordovician ice age. By partially blocking sunlight, especially at the equator, the ring may have triggered global cooling. As the ring dissipated over time and fewer impacts occurred, temperatures gradually recovered. ...
For most of human history, the Sun appeared stable. It was a stoic stellar presence, going about its business fusing hydrogen into helium beyond our awareness and helping Earth remain habitable. But in our modern technological age, that facade fell away. We now know that the Sun is governed...
However, in the presence of Ca2+, the concentration of F− in the fluids is very low due to the formation of fluorite and the presence of Ba2+, and the formation of highly insoluble barite may limit transport of REEs in sulfate complexes. Therefore, in their summary article on the ...
First, we identify ‘safe’ boundaries at subglobal and global scales for “maintain[ing] and enhanc[ing] the stability and resilience of the Earth system over time, thereby safeguarding its functions and ability to support humans and all other living organisms”4. To determine safe boundaries, ...
et al. Waste SMD LEDs from End-of-Life Residential LED Lamps: Presence and Characterisation of Rare Earth Elements and Precious Metals as a Function of Correlated Colour Temperature. Recycling, 2024, 9(6): 128. 必应学术 49. Biandolino, F., Prato, E., Grattagliano, A. et al. ...
Previous investigations /1/ of hypervelocity craters on Skylab IV windows have suggested the presence in near-Earth orbit of a significant population of man-made debris in the form of aluminium oxide spheres from rocket thruster firings. Cosmic dust investigators on the first LDEF mission (...
(FAP) less than 5[Math Processing Error]×10−6, corroborating the signal found by the other methods. Given the lack of signals at this period in the activity indicators, the most plausible explanation for these RV variations is the presence of an additional, non-transiting planet, K2-360...
On 28 September and 1 October, Toulouse VAAC and PEVOLCA did report the presence of volcanic ash at altitudes above the −10 °C isotherm, respectively, but the BTD had not yet been deployed at this time. Between 18:00 and 03:00 UTC on the night of 13-14 December, volcanic ash ...
Furthermore, while two velocities explain different patterns in our study, the presence of oblique patterns is heavily influenced by the noise term , as Figure 6c shows. Consequently, velocities ranging from 0.45 to 0.5 will likely result in oblique patterns, with the inclined angle pattern ...
"Finding remnants of this ancient crust has proven difficult, but a new approach offers the ability to detect the presence of truly ancient crust that has been reworked into 'merely' really old rocks," Carlson said. The approach employed in this study examined variations in the abundance of an...