Isotopic fractionation study towards massive star-forming regions across the Galaxy
Title | Isotopic fractionation study towards massive star-forming regions across the Galaxy PDF eBook |
Author | Laura Colzi |
Publisher | Firenze University Press |
Total Pages | 232 |
Release | 2022 |
Genre | Science |
ISBN | 8855183796 |
One of the most important tools to investigate the chemical history of our Galaxy and our own Solar System is to measure the isotopic fractionation of chemical elements. In the present study new astronomical observations devoted to the study of hydrogen and nitrogen fractionation (D/H and 14N/15N ratios) of molecules, towards massive star-forming regions in different evolutionary phases, have been presented. Moreover, a new detailed theoretical study of carbon fractionation, 12C/13C ratios, has been done. One of the main results was the confirmation that the 14N/15N ratio increases with the galactocentric distance, as predicted by stellar nucleosynthesis Galactic chemical evolution models. This work gives new important inputs on the understanding of local chemical processes that favor the production of molecules with different isotopes in star-forming regions.
Tectono-metamorphic evolution of the continental units along the edge between Alpine and Hercynian Corsica
Title | Tectono-metamorphic evolution of the continental units along the edge between Alpine and Hercynian Corsica PDF eBook |
Author | Maria Di Rosa |
Publisher | Firenze University Press |
Total Pages | 224 |
Release | 2022 |
Genre | Science |
ISBN | 8855184199 |
In this work the central area of Corsica island was studied in order to reconstruct the tectono-metamorphic history of the continental and oceanic high pressure units that occupy the structurally deeper levels of the tectonic stacking of Alpine Corsica and their stratigraphic and structural relationship with the European margin (Hercynian Corsica). The study includes the geological mapping, the mesoscale and microscale structural analysis, the acquisition of chemical analyzes and micromaps with the microprobe, thermobarometric estimation through specific methodologies for metapelites, U-Th-Pb dating of zircons and allanites. The results obtained allows to reconstruct the geodynamic model of this sector of the Alpine belt from the Permian to the Burdigalian.
Advanced Ground-Based Real and Synthetic Aperture Radar
Title | Advanced Ground-Based Real and Synthetic Aperture Radar PDF eBook |
Author | Lapo Miccinesi |
Publisher | Firenze University Press |
Total Pages | 146 |
Release | 2022 |
Genre | Technology & Engineering |
ISBN | 8855183761 |
Ground-based/terrestrial radar interferometry (GBRI) is a scientific topic of increasing interest in recent years. The GBRI is used in several field as remote sensing technique for monitoring natural environment (landslides, glacier, and mines) or infrastructures (bridges, towers). These sensors provide the displacement of targets by measuring the phase difference between sending and receiving radar signal. If the acquisition rate is enough the GBRI can provide the natural frequency, e.g. by calculating the Fourier transform of displacement. The research activity, presented in this work, concerns design and development of some advanced GBRI systems. These systems are related to the following issue: detection of displacement vector, Multiple Input Multiple Output (MIMO) and radars with 3D capability.
Functional validation of genetic variants identified by next generation sequencing in malformations of cortical development
Title | Functional validation of genetic variants identified by next generation sequencing in malformations of cortical development PDF eBook |
Author | Dalila De Vita |
Publisher | Firenze University Press |
Total Pages | 68 |
Release | 2022 |
Genre | Medical |
ISBN | 8855183435 |
Malformations of cortical development (MCDs) result from a disruption in the process of the human brain cortex formation: currently, there are no pharmacological treatments for diffuse MCDs. Next-generation sequencing has accelerated the identification of MCDs causing genes: in some cases, functional studies are needed to clarify the role of genetic variants. The aim of this PhD project has been to apply a multidisciplinary approach to identify causative mutations in patients with MCDs, validate the pathogenic role of the identified mutations, and assess the effectiveness of novel in vitro treatment for mTOR pathway related MCDs.
Massive Star-forming Regions Across the Galaxy
Title | Massive Star-forming Regions Across the Galaxy PDF eBook |
Author | Kazi Lucie Jessica Rygl |
Publisher | |
Total Pages | 166 |
Release | 2010 |
Genre | |
ISBN |
Galactic Massive Star Forming Regions Near and Far
Title | Galactic Massive Star Forming Regions Near and Far PDF eBook |
Author | Tzu-Cheng Peng |
Publisher | |
Total Pages | 270 |
Release | 2010 |
Genre | |
ISBN |
Literature 1989, Part 1
Title | Literature 1989, Part 1 PDF eBook |
Author | Astronomisches Rechen-Institut |
Publisher | Springer Science & Business Media |
Total Pages | 1433 |
Release | 2013-11-11 |
Genre | Science |
ISBN | 3662123703 |
From the reviews: "Astronomy and Astrophysics Abstracts has appeared in semi-annual volumes since 1969 and it has already become one of the fundemental publications in the fields of astronomy, astrophysics and neighbouring sciences. It is the most important English-language abstracting journal in the mentioned branches. ...The abstracts are classified under more than a hundred subject categories, thus permitting a quick survey of the whole extended material. The AAA is a valuable and important publication for all students and scientists working in the fields of astronomy and related sciences. As such it represents a necessary ingredient of any astronomical library all over the world." Space Science Review# "Dividing the whole field plus related subjects into 108 categories, each work is numbered and most are accompanied by brief abstracts. Fairly comprehensive cross-referencing links relevant papers to more than one category, and exhaustive author and subject indices are to be found at the back, making the catalogues easy to use. The series appears to be so complete in its coverage and always less than a year out of date that I shall certainly have to make a little more space on those shelves for future volumes." The Observatory Magazine#