Sökning: "Planet Earth"

Visar resultat 1 - 5 av 199 uppsatser innehållade orden Planet Earth.

  1. 1. Circular economy: : Sustainability assessment of circular business models basedon material flow analysis.

    Master-uppsats, Mittuniversitetet/Institutionen för naturvetenskap, design och hållbar utveckling (2023-)

    Författare :Sara Ankar; [2023]
    Nyckelord :Circular economy; Circular business models; Product-Service-System; Profitability; Climate impact; Material Flow Analysis;

    Sammanfattning : This study has contributed to the developing concepts of circular economy by assessing circular business models and to test different approaches for circularity in a measurable way. In our current era of time, we stand against environment challenges with a warming planet and resources scarcity. LÄS MER

  3. 2. A cross-correlation analysis of a warm super-Neptune using transit spectroscopy

    Kandidat-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Elias Önerud; [2023]
    Nyckelord :Cross-correlation; cross-correlation spectroscopy; cross-correlation analysis; super-Neptune; astronomy; astrophysics; WASP-107; WASP-107 b; CRIRES ; SysRem; exoplanet; transmission spectrum; transit;

    Sammanfattning : A study was made in order to deduce whether certain chemical species, namely water (H2O) and carbon monoxide (CO), are present in the atmosphere of the exoplanet WASP-107 b, which lies about 200 light-years away from Earth in the constellation Virgo. The project was carried out at Uppsala University at the Department of Physics and Astronomy. LÄS MER

  4. 3. Methanobacterium cauma sp. nov., a hydrogenotrophic, halotolerant methanogen from an active serpintinization system at Chimaera seep

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Aubree Stephens; [2023]
    Nyckelord :methanogen; archaea; hydrogenotroph; halotolerant; Methanobacterium; Chimaera seep; methanogenesis;

    Sammanfattning : The archaeal branch of life represents some of the oldest life forms on Earth. Archaea are believed to have diverged from Prokaryotes roughly 3.5 billion years ago and it’s theorized that biological methane production started around this time as well. This would make methanogenesis one of the oldest metabolisms on our planet. LÄS MER

  5. 4. Nedslagskratrars inverkan på Mars yt-datering. En undersökning av Mars främsta yt-dateringsmetod: ”Crater Counting”

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Jacob Andersson; [2023]
    Nyckelord :CRA; Erosion rate; Secondary cratering; Primary cratering; Mars; Crater counting; crater obliteration; SFD; Earth and Environmental Sciences;

    Sammanfattning : Many aspects of Mars’s geological history remain enigmatic, in order to increase our knowledge of Mars’s geological history, methods for surface dating are very important. Next to the use of surface morphology superpositions, the most common surface dating method is referred to as crater counting. LÄS MER

  7. 5. Sustainable water treatment in the manufacturing industry : Investigation of the water treatment system at VCE, Hallsberg

    Master-uppsats, Linköpings universitet/Energisystem

    Författare :Johan Hagströmer; Forsberg Emma; [2023]
    Nyckelord :;

    Sammanfattning : Transitioning to circular flows is essential to economize the planet’s resources. One of the most important resources on earth is water as it is vital for all living things. However, water purification methods have proven to be very energy intensive, and increasing the circular water flows is therefore challenging. LÄS MER