Sökning: "Abundances"

Visar resultat 1 - 5 av 77 uppsatser innehållade ordet Abundances.

  1. 1. Spatial and temporal changes in microbial community composition in a full-scale woodchip bioreactor for treating mine water

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Felicia Wallnäs; [2020]
    Nyckelord :;

    Sammanfattning : Incomplete detonation of nitrogen-based explosives can lead to abundant levels of nitrate in mine groundwater. The possibility of reducing nitrogen levels from the wastewater through denitrification, anammox and DNRA has been investigated using a full-scale bioreactor. The bioreactor is situated subsurface and is filled with pine woodchips. LÄS MER

  2. 2. Accurate Abundances of Giant Stars in the Local disk: A manual analysis of IR APOGEE spectra

    Master-uppsats, Lunds universitet/Astronomi; Lunds universitet/Institutionen för astronomi och teoretisk fysik

    Författare :Ivalu Barlach Christensen; [2020]
    Nyckelord :Galactic Chemical Evolution; Astrophysics; Astronomy; IR Spectroscopy; Milky Way; Abundance; Physics and Astronomy;

    Sammanfattning : Purpose: In order to study the Galactic Chemical Evolution, elemental abundances are needed. The purpose of this work is to investigate the chemical evolution of the Milky Way by determining several elemental abundances of giants in the local disk. LÄS MER

  3. 3. Spatial patterns of zooplankton communities In Swedish mountain and boreal lakes.

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Juan Manuel de la Quintana; [2020]
    Nyckelord :Lake; zooplankton; phytoplankton; DOC and DIN:TP.;

    Sammanfattning :     Zooplankton is crucial for lake ecosystems as it is an important component in most of the food webs of these ecosystems. However, environmental changes have caused reductions in ecosystems nutrients and stoichiometry, which directly affects phytoplankton’s development and quality. LÄS MER

  4. 4. From the bulge region to the outer disk: Tracing the α-enhancement level in the Galactic thin and thick disks

    Kandidat-uppsats, Lunds universitet/Astronomi

    Författare :Elin Sandvik; [2020]
    Nyckelord :Chemical abundance; star formation rate; initial-mass function; APOGEE; Milky Way; Physics and Astronomy;

    Sammanfattning : One of the biggest mysteries astronomers wish to unveil is the formation and evolution of galaxies. Properties of our own galaxy, the Milky Way, can provide great insight into these. The star formation rate (SFR) and whether it varies with distance from the galactic centre (GC), is one of these properties. LÄS MER

  5. 5. Seasonal community dynamics of macroinvertebrates in an Arctic stream

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Ellinor Jakobsson; [2019]
    Nyckelord :Macroinvertebrates; Arctic; seasonality; community composition; Abisko;

    Sammanfattning : Arctic ecosystems are amongst the most vulnerable on Earth to ongoing climate change. While the responses to these changes are well studied on land, less is known about how aquatic communities may respond to a warmer arctic. LÄS MER