Sökning: "jorden beståndsdelar"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden jorden beståndsdelar.

1. 1. Ion and ENA precipitation onto the upper atmosphere of Venus : Estimate of precipitation maps using data from a hybrid model

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Lorenzo Obersnel; [2023]
   Nyckelord :Eneregetic Neutral Atoms; Venus; Ion precipitation; ENA precipitation; Atomi Neutri Energetici; Venere; precipitazione di ioni; precipitazione di atomi neutri; Energisk Neutral Atom; Venus; Utfällningen joner; Utfällningen Energisk Neutral Atom;

   Sammanfattning : Venus does not have a strong intrinsic magnetic field as the Earth, and its magnetosphere is induced by the interaction of the solar wind with the ionosphere. The near-Venus space environment is characterized by the presence of a bow shock and of an induced magnetic boundary linked to the interplanetary magnetic field orientation. LÄS MER

3. 2. Investigation of acidic chemical recycling of poly(acetal-ester)s

   Magister-uppsats, Lunds universitet/Centrum för analys och syntes

   Författare :Saga Vesterbacka; [2023]
   Nyckelord :Poly actetal-ester s; Chemical plastic recycling; Hydrolysis; Acidic degradation; Akestra; PHVT; Re-polymerization; Polymer technology; Chemistry;

   Sammanfattning : Plastic recycling is a very relevant topic from both environmental and economic viewpoints. Chemical plastic recycling is a logical solution to the plastic problems, which shows the potential to reduce plastic waste and carbon emissions from burning the plastics. LÄS MER

4. 3. Design and Qualification of a Gimbal Suspension for Attitude Control System Testing of CubeSats

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Anthony Holmberg; [2021]
   Nyckelord :Gimbal; CubeSat; ADCS; Suspension; Testbed; Disturbance Torque; Angular Measurement; Gimbal; CubeSat; ADCS; Upphängning; Testbädd; Störmoment; Vinkelmätning;

   Sammanfattning : Since the dawn of the space race, satellites have grown rapidly in complexity and shrunk equally rapidly in size. Most of them contain an Attitude Determination and Control System (ADCS) on board for pointing and detumbling manoeuvres. LÄS MER

5. 4. Chemical recycling of cotton-based waste textiles by sulfuric acid hydrolysis

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Edvin Ruuth; [2020]
   Nyckelord :recycling; hydrolysis; cotton; waste textiles; sulfuric acid; glucose; chemical engineering; kemiteknik; Technology and Engineering;

   Sammanfattning : Large amounts of waste textiles are produced annually, of which only a small fraction is recycled currently. The purpose of this study was to develop a method to recycle cotton-based waste textiles chemically that can be coupled to the production of biofuels or green chemicals. LÄS MER

7. 5. Leaching of Glass Waste – Structure and Humidity Cell Tests

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Elin Sandgren; [2019]
   Nyckelord :Glass structure; glass leaching; glass modifiers; humidity cell test; saturation index; arsenic; lead.; Glasstruktur; lakning av glas; glasmodifierare; fuktkammarförsök; mättnadsindex; arsenik; bly.;

   Sammanfattning : Glass production has historically occurred at around 50 glassworks in Sweden, in a region known as the Kingdom of Crystals (Glasriket). Today, most of these sites are no longer active and left behind is glass waste of different forms (both as fragments of finished glass as well as unrefined glass melts). LÄS MER