Zobrazeno 1 - 10
of 714
pro vyhledávání: '"Santos, Júlia"'
Multi-objective unconstrained combinatorial optimization problems (MUCO) are in general hard to solve, i.e., the corresponding decision problem is NP-hard and the outcome set is intractable. In this paper we explore special cases of MUCO problems tha
Externí odkaz:
http://arxiv.org/abs/2412.01465
Autor:
Slavicinska, Katerina, Boogert, Adwin, Tychoniec, Łukasz, van Dishoeck, Ewine F., van Gelder, Martijn L., Santos, Julia C., Klaassen, Pamela D., Kavanagh, Patrick J., Chuang, Ko-Ju
Sulfur is depleted with respect to its cosmic standard abundance in dense star-forming regions. It has been suggested that this depletion is caused by the freeze-out of sulfur on interstellar dust grains, but the observed abundances and upper limits
Externí odkaz:
http://arxiv.org/abs/2410.02860
Publikováno v:
A&A 690, A24 (2024)
Carbonyl sulfide (OCS) is widely observed in the gas phase towards star-forming regions and was the first of the only two sulfur-bearing species detected in interstellar ices so far. However, the chemical network governing its formation is still not
Externí odkaz:
http://arxiv.org/abs/2408.03997
Autor:
Santos, Julia C., van Gelder, Martijn L., Nazari, Pooneh, Ahmadi, Aida, van Dishoeck, Ewine F.
Publikováno v:
A&A 689, A248 (2024)
We investigate the chemical history of interstellar OCS and SO2 by deriving a statistically-significant sample of gas-phase column densities towards massive protostars and comparing to observations of gas and ices towards other sources spanning from
Externí odkaz:
http://arxiv.org/abs/2407.14711
The chemical network governing interstellar sulfur has been the topic of unrelenting discussion for the past decades due to the conspicuous discrepancy between its expected and observed abundances in different interstellar environments. More recently
Externí odkaz:
http://arxiv.org/abs/2407.09730
Autor:
Santos, Julia Sudhoff, Kroll, Lars
The safety of streets is difficult to quantify numerically. However, it is possible to sort streets regarding their safety into ordered categories, like safe, neutral and unsafe. In this paper we model the computation of safe bicycle routes as an opt
Externí odkaz:
http://arxiv.org/abs/2403.18363
Hydrogen sulfide (H$_2$S) is thought to be efficiently formed on grain surfaces through the successive hydrogenation of S atoms. Its non-detection so far in astronomical observations of icy dust mantles thus indicates that effective destruction pathw
Externí odkaz:
http://arxiv.org/abs/2308.07960
Autor:
Santos, Júlia Ferrúa dos
Os efeitos da perda de hábitat e da fragmentação já estão bem estabelecidos na literatura, porém pouco se sabe sobre como o uso do habitat pode ser modificado em função de alterações na quantidade e na qualidade da mata. Este trabalho tem c
Autor:
Santos, Julia C., Chuang, Ko-Ju, Lamberts, Thanja, Fedoseev, Gleb, Ioppolo, Sergio, Linnartz, Harold
The successive addition of H atoms to CO in the solid phase has been hitherto regarded as the primary route to form methanol in dark molecular clouds. However, recent Monte Carlo simulations of interstellar ices alternatively suggested the radical-mo
Externí odkaz:
http://arxiv.org/abs/2205.12284
Autor:
de Macêdo Oliveira, Felipe Carlos, Galvão, Djalma Lopes, Santos, Júlia da Costa, da Costa Dantas, Lívia Maria, de Souza, Larissa Aida Lemos, de Araújo Morais, Ana Heloneida, Lima, Marcos dos Santos, Xavier Júnior, Francisco Humberto, de Assis, Cristiane Fernandes, Sousa Júnior, Francisco Canindé de
Publikováno v:
In Food Bioscience December 2024 62
