Essays about: "Rb"

Showing result 6 - 10 of 34 essays containing the word Rb.

1. 6. Towards a high resolution view of infrared line formation

   University essay from Lunds universitet/Astronomi - Genomgår omorganisation

   Author : Martin Schmidt Montelius; [2021]
   Keywords : Spectroscopy; Near infrared; K giants; Galactic archeaology; Galactic chemical evolution; Abundances; Milky Way; Physics and Astronomy;

   Abstract : Observing in the infrared has many benefits, such as seeing through the interstellar dust in the galaxy, easier use of adaptive optics, and better flux ratios for direct observations of exoplanets. Before the infrared spectral range can be utilised for highly accurate stellar spectroscopy there is a need for a better understanding of both stellar modelling and the atomic physics that go into forming spectral lines. READ MORE

3. 7. Unraveling the Tectonic History of the Aurek Metagabbro within the Seve Nappe Complex, Scandinavian Caledonides

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Sabine Rousku; [2021]
   Keywords : Scandinavian Caledonides; Seve Nappe Complex; Aurek metagabbro; Kebnekaise Mountains; Zircon U-Pb Geochronology; Thermodynamic modeling; Geochemistry; Skandinaviska Kaledoniderna; Seveskollan; Aurek metagabbro; Kebnekaisebergen; zirkon U-Pb geokronologi; Termodynamisk modellering; Geokemi;

   Abstract : The Scandinavian Caledonides form a mountain range comprising nappe stacks of numerous far-travelled thrust sheets. The thrust sheets consist of diverse lithologies representing pre- and synorogenic sedimentary and igneous rocks subsequently metamorphosed to various degrees, from the Late Neoproterozoic to Middle Devonian. READ MORE

4. 8. Reconstructing Weathering and Climate Trends on Loess Deposits in NW France Using XRF Analysis

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Hanna Andersson; [2021]
   Keywords : geochemistry; loess; XRF; weathering; climate change; N-W France;

   Abstract : Analyzing climate changes by loess sediment deposits formed after the last glacial maximum gives us information about how the environment was dynamically before humans physically could record climate changes. Sampling and analyzing loess from different places in the world give us a more reliable view of when events and changes in climate took place. READ MORE

5. 9. Investigation of the Metal Content in Cress Seedlings fed with increased Concentration of Lead & Iron Solutions

   University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

   Author : Nikita Burton; [2020]
   Keywords : Cress; iron; lead; metals; acidified digestion; MP-AES; ICP-MS;

   Abstract : Metals are essential nutrients for plant health, but not all metals are necessary and can sometimes be harmful towards plants depending on factors such as species, elemental composition in the soil and concentration of a metal. Iron (Fe), which is one of the most abundant metals in the earth’s crust is also one the most important nutrients for plant growth, as it is responsible for metabolism. READ MORE

6. 10. Large Surveys and Data-Driven Investigations of Radial Migration

   University essay from Lunds universitet/Astronomi - Genomgår omorganisation

   Author : John Bradley Bowers; [2019]
   Keywords : Physics and Astronomy;

   Abstract : We probe the implications of 5 different previously developed models of the evolution of the Milky Way’s radial metallicity gradient for radial migration of stars observed today between 5kpc < R < 12kpc. Our sample contains 7167 giant stars, with metallicities and radial velocities obtained from APOGEE DR14, full 5-parameter kinematic information from Gaia DR2, and ages derived in Martig et al. READ MORE